pull-requests: unified merge checks.

- same logic is now used for API, pre-conditions on show, and checks on actual merge
- added checks into API because it was not validated

rhodecode/api/views/pull_request_api.py

@@ -1,714 +1,715 b''
 # -*- coding: utf-8 -*-
 
 # Copyright (C) 2011-2017 RhodeCode GmbH
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License, version 3
 # (only), as published by the Free Software Foundation.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # This program is dual-licensed. If you wish to learn more about the
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 
 import logging
 
 from rhodecode.api import jsonrpc_method, JSONRPCError
 from rhodecode.api.utils import (
     has_superadmin_permission, Optional, OAttr, get_repo_or_error,
     get_pull_request_or_error, get_commit_or_error, get_user_or_error,
     validate_repo_permissions, resolve_ref_or_error)
 from rhodecode.lib.auth import (HasRepoPermissionAnyApi)
 from rhodecode.lib.base import vcs_operation_context
 from rhodecode.lib.utils2 import str2bool
 from rhodecode.model.changeset_status import ChangesetStatusModel
 from rhodecode.model.comment import CommentsModel
 from rhodecode.model.db import Session, ChangesetStatus
-from rhodecode.model.pull_request import PullRequestModel
+from rhodecode.model.pull_request import PullRequestModel, MergeCheck
 from rhodecode.model.settings import SettingsModel
 
 log = logging.getLogger(__name__)
 
 
 @jsonrpc_method()
 def get_pull_request(request, apiuser, repoid, pullrequestid):
     """
     Get a pull request based on the given ID.
 
     :param apiuser: This is filled automatically from the |authtoken|.
     :type apiuser: AuthUser
     :param repoid: Repository name or repository ID from where the pull
         request was opened.
     :type repoid: str or int
     :param pullrequestid: ID of the requested pull request.
     :type pullrequestid: int
 
     Example output:
 
     .. code-block:: bash
 
       "id": <id_given_in_input>,
       "result":
         {
             "pull_request_id":   "<pull_request_id>",
             "url":               "<url>",
             "title":             "<title>",
             "description":       "<description>",
             "status" :           "<status>",
             "created_on":        "<date_time_created>",
             "updated_on":        "<date_time_updated>",
             "commit_ids":        [
                                      ...
                                      "<commit_id>",
                                      "<commit_id>",
                                      ...
                                  ],
             "review_status":    "<review_status>",
             "mergeable":         {
                                      "status":  "<bool>",
                                      "message": "<message>",
                                  },
             "source":            {
                                      "clone_url":     "<clone_url>",
                                      "repository":    "<repository_name>",
                                      "reference":
                                      {
                                          "name":      "<name>",
                                          "type":      "<type>",
                                          "commit_id": "<commit_id>",
                                      }
                                  },
             "target":            {
                                      "clone_url":   "<clone_url>",
                                      "repository":    "<repository_name>",
                                      "reference":
                                      {
                                          "name":      "<name>",
                                          "type":      "<type>",
                                          "commit_id": "<commit_id>",
                                      }
                                  },
             "merge":             {
                                      "clone_url":   "<clone_url>",
                                      "reference":
                                      {
                                          "name":      "<name>",
                                          "type":      "<type>",
                                          "commit_id": "<commit_id>",
                                      }
                                  },
            "author":             <user_obj>,
            "reviewers":          [
                                      ...
                                      {
                                         "user":          "<user_obj>",
                                         "review_status": "<review_status>",
                                      }
                                      ...
                                  ]
         },
        "error": null
     """
     get_repo_or_error(repoid)
     pull_request = get_pull_request_or_error(pullrequestid)
     if not PullRequestModel().check_user_read(
             pull_request, apiuser, api=True):
         raise JSONRPCError('repository `%s` does not exist' % (repoid,))
     data = pull_request.get_api_data()
     return data
 
 
 @jsonrpc_method()
 def get_pull_requests(request, apiuser, repoid, status=Optional('new')):
     """
     Get all pull requests from the repository specified in `repoid`.
 
     :param apiuser: This is filled automatically from the |authtoken|.
     :type apiuser: AuthUser
     :param repoid: Repository name or repository ID.
     :type repoid: str or int
     :param status: Only return pull requests with the specified status.
         Valid options are.
         * ``new`` (default)
         * ``open``
         * ``closed``
     :type status: str
 
     Example output:
 
     .. code-block:: bash
 
       "id": <id_given_in_input>,
       "result":
         [
             ...
             {
                 "pull_request_id":   "<pull_request_id>",
                 "url":               "<url>",
                 "title" :            "<title>",
                 "description":       "<description>",
                 "status":            "<status>",
                 "created_on":        "<date_time_created>",
                 "updated_on":        "<date_time_updated>",
                 "commit_ids":        [
                                          ...
                                          "<commit_id>",
                                          "<commit_id>",
                                          ...
                                      ],
                 "review_status":    "<review_status>",
                 "mergeable":         {
                                         "status":      "<bool>",
                                         "message:      "<message>",
                                      },
                 "source":            {
                                          "clone_url":     "<clone_url>",
                                          "reference":
                                          {
                                              "name":      "<name>",
                                              "type":      "<type>",
                                              "commit_id": "<commit_id>",
                                          }
                                      },
                 "target":            {
                                          "clone_url":   "<clone_url>",
                                          "reference":
                                          {
                                              "name":      "<name>",
                                              "type":      "<type>",
                                              "commit_id": "<commit_id>",
                                          }
                                      },
                 "merge":             {
                                          "clone_url":   "<clone_url>",
                                          "reference":
                                          {
                                              "name":      "<name>",
                                              "type":      "<type>",
                                              "commit_id": "<commit_id>",
                                          }
                                      },
                "author":             <user_obj>,
                "reviewers":          [
                                          ...
                                          {
                                             "user":          "<user_obj>",
                                             "review_status": "<review_status>",
                                          }
                                          ...
                                      ]
             }
             ...
         ],
       "error": null
 
     """
     repo = get_repo_or_error(repoid)
     if not has_superadmin_permission(apiuser):
         _perms = (
             'repository.admin', 'repository.write', 'repository.read',)
         validate_repo_permissions(apiuser, repoid, repo, _perms)
 
     status = Optional.extract(status)
     pull_requests = PullRequestModel().get_all(repo, statuses=[status])
     data = [pr.get_api_data() for pr in pull_requests]
     return data
 
 
 @jsonrpc_method()
 def merge_pull_request(request, apiuser, repoid, pullrequestid,
                        userid=Optional(OAttr('apiuser'))):
     """
     Merge the pull request specified by `pullrequestid` into its target
     repository.
 
     :param apiuser: This is filled automatically from the |authtoken|.
     :type apiuser: AuthUser
     :param repoid: The Repository name or repository ID of the
         target repository to which the |pr| is to be merged.
     :type repoid: str or int
     :param pullrequestid: ID of the pull request which shall be merged.
     :type pullrequestid: int
     :param userid: Merge the pull request as this user.
     :type userid: Optional(str or int)
 
     Example output:
 
     .. code-block:: bash
 
       "id": <id_given_in_input>,
       "result":
         {
             "executed":         "<bool>",
             "failure_reason":   "<int>",
             "merge_commit_id":  "<merge_commit_id>",
             "possible":         "<bool>",
             "merge_ref":        {
                                     "commit_id": "<commit_id>",
                                     "type":      "<type>",
                                     "name":      "<name>"
                                 }
         },
       "error": null
 
     """
     repo = get_repo_or_error(repoid)
     if not isinstance(userid, Optional):
         if (has_superadmin_permission(apiuser) or
                 HasRepoPermissionAnyApi('repository.admin')(
                     user=apiuser, repo_name=repo.repo_name)):
             apiuser = get_user_or_error(userid)
         else:
             raise JSONRPCError('userid is not the same as your user')
 
     pull_request = get_pull_request_or_error(pullrequestid)
-    if not PullRequestModel().check_user_merge(
-            pull_request, apiuser, api=True):
-        raise JSONRPCError('repository `%s` does not exist' % (repoid,))
-    if pull_request.is_closed():
+
+    check = MergeCheck.validate(pull_request, user=apiuser)
+    merge_possible = not check.failed
+
+    if not merge_possible:
+        reasons = ','.join([msg for _e, msg in check.errors])
         raise JSONRPCError(
-            'pull request `%s` merge failed, pull request is closed' % (
-                pullrequestid,))
+            'merge not possible for following reasons: {}'.format(reasons))
 
     target_repo = pull_request.target_repo
     extras = vcs_operation_context(
         request.environ, repo_name=target_repo.repo_name,
         username=apiuser.username, action='push',
         scm=target_repo.repo_type)
     merge_response = PullRequestModel().merge(
         pull_request, apiuser, extras=extras)
     if merge_response.executed:
         PullRequestModel().close_pull_request(
             pull_request.pull_request_id, apiuser)
 
         Session().commit()
 
     # In previous versions the merge response directly contained the merge
     # commit id. It is now contained in the merge reference object. To be
     # backwards compatible we have to extract it again.
     merge_response = merge_response._asdict()
     merge_response['merge_commit_id'] = merge_response['merge_ref'].commit_id
 
     return merge_response
 
 
 @jsonrpc_method()
 def close_pull_request(request, apiuser, repoid, pullrequestid,
                        userid=Optional(OAttr('apiuser'))):
     """
     Close the pull request specified by `pullrequestid`.
 
     :param apiuser: This is filled automatically from the |authtoken|.
     :type apiuser: AuthUser
     :param repoid: Repository name or repository ID to which the pull
         request belongs.
     :type repoid: str or int
     :param pullrequestid: ID of the pull request to be closed.
     :type pullrequestid: int
     :param userid: Close the pull request as this user.
     :type userid: Optional(str or int)
 
     Example output:
 
     .. code-block:: bash
 
       "id": <id_given_in_input>,
       "result":
         {
             "pull_request_id":  "<int>",
             "closed":           "<bool>"
         },
       "error": null
 
     """
     repo = get_repo_or_error(repoid)
     if not isinstance(userid, Optional):
         if (has_superadmin_permission(apiuser) or
                 HasRepoPermissionAnyApi('repository.admin')(
                     user=apiuser, repo_name=repo.repo_name)):
             apiuser = get_user_or_error(userid)
         else:
             raise JSONRPCError('userid is not the same as your user')
 
     pull_request = get_pull_request_or_error(pullrequestid)
     if not PullRequestModel().check_user_update(
             pull_request, apiuser, api=True):
         raise JSONRPCError(
             'pull request `%s` close failed, no permission to close.' % (
                 pullrequestid,))
     if pull_request.is_closed():
         raise JSONRPCError(
             'pull request `%s` is already closed' % (pullrequestid,))
 
     PullRequestModel().close_pull_request(
         pull_request.pull_request_id, apiuser)
     Session().commit()
     data = {
         'pull_request_id': pull_request.pull_request_id,
         'closed': True,
     }
     return data
 
 
 @jsonrpc_method()
 def comment_pull_request(request, apiuser, repoid, pullrequestid,
                          message=Optional(None), status=Optional(None),
                          commit_id=Optional(None),
                          userid=Optional(OAttr('apiuser'))):
     """
     Comment on the pull request specified with the `pullrequestid`,
     in the |repo| specified by the `repoid`, and optionally change the
     review status.
 
     :param apiuser: This is filled automatically from the |authtoken|.
     :type apiuser: AuthUser
     :param repoid: The repository name or repository ID.
     :type repoid: str or int
     :param pullrequestid: The pull request ID.
     :type pullrequestid: int
     :param message: The text content of the comment.
     :type message: str
     :param status: (**Optional**) Set the approval status of the pull
         request. Valid options are:
         * not_reviewed
         * approved
         * rejected
         * under_review
     :type status: str
     :param commit_id: Specify the commit_id for which to set a comment. If
         given commit_id is different than latest in the PR status
         change won't be performed.
     :type commit_id: str
     :param userid: Comment on the pull request as this user
     :type userid: Optional(str or int)
 
     Example output:
 
     .. code-block:: bash
 
       id : <id_given_in_input>
       result :
         {
             "pull_request_id":  "<Integer>",
             "comment_id":       "<Integer>",
             "status": {"given": <given_status>,
                        "was_changed": <bool status_was_actually_changed> },
         }
       error :  null
     """
     repo = get_repo_or_error(repoid)
     if not isinstance(userid, Optional):
         if (has_superadmin_permission(apiuser) or
                 HasRepoPermissionAnyApi('repository.admin')(
                     user=apiuser, repo_name=repo.repo_name)):
             apiuser = get_user_or_error(userid)
         else:
             raise JSONRPCError('userid is not the same as your user')
 
     pull_request = get_pull_request_or_error(pullrequestid)
     if not PullRequestModel().check_user_read(
             pull_request, apiuser, api=True):
         raise JSONRPCError('repository `%s` does not exist' % (repoid,))
     message = Optional.extract(message)
     status = Optional.extract(status)
     commit_id = Optional.extract(commit_id)
 
     if not message and not status:
         raise JSONRPCError(
             'Both message and status parameters are missing. '
             'At least one is required.')
 
     if (status not in (st[0] for st in ChangesetStatus.STATUSES) and
             status is not None):
         raise JSONRPCError('Unknown comment status: `%s`' % status)
 
     if commit_id and commit_id not in pull_request.revisions:
         raise JSONRPCError(
             'Invalid commit_id `%s` for this pull request.' % commit_id)
 
     allowed_to_change_status = PullRequestModel().check_user_change_status(
         pull_request, apiuser)
 
     # if commit_id is passed re-validated if user is allowed to change status
     # based on latest commit_id from the PR
     if commit_id:
         commit_idx = pull_request.revisions.index(commit_id)
         if commit_idx != 0:
             allowed_to_change_status = False
 
     text = message
     status_label = ChangesetStatus.get_status_lbl(status)
     if status and allowed_to_change_status:
         st_message = ('Status change %(transition_icon)s %(status)s'
                       % {'transition_icon': '>', 'status': status_label})
         text = message or st_message
 
     rc_config = SettingsModel().get_all_settings()
     renderer = rc_config.get('rhodecode_markup_renderer', 'rst')
 
     status_change = status and allowed_to_change_status
     comment = CommentsModel().create(
         text=text,
         repo=pull_request.target_repo.repo_id,
         user=apiuser.user_id,
         pull_request=pull_request.pull_request_id,
         f_path=None,
         line_no=None,
         status_change=(status_label if status_change else None),
         status_change_type=(status if status_change else None),
         closing_pr=False,
         renderer=renderer
     )
 
     if allowed_to_change_status and status:
         ChangesetStatusModel().set_status(
             pull_request.target_repo.repo_id,
             status,
             apiuser.user_id,
             comment,
             pull_request=pull_request.pull_request_id
         )
         Session().flush()
 
     Session().commit()
     data = {
         'pull_request_id': pull_request.pull_request_id,
         'comment_id': comment.comment_id if comment else None,
         'status': {'given': status, 'was_changed': status_change},
     }
     return data
 
 
 @jsonrpc_method()
 def create_pull_request(
         request, apiuser, source_repo, target_repo, source_ref, target_ref,
         title, description=Optional(''), reviewers=Optional(None)):
     """
     Creates a new pull request.
 
     Accepts refs in the following formats:
 
         * branch:<branch_name>:<sha>
         * branch:<branch_name>
         * bookmark:<bookmark_name>:<sha> (Mercurial only)
         * bookmark:<bookmark_name> (Mercurial only)
 
     :param apiuser: This is filled automatically from the |authtoken|.
     :type apiuser: AuthUser
     :param source_repo: Set the source repository name.
     :type source_repo: str
     :param target_repo: Set the target repository name.
     :type target_repo: str
     :param source_ref: Set the source ref name.
     :type source_ref: str
     :param target_ref: Set the target ref name.
     :type target_ref: str
     :param title: Set the pull request title.
     :type title: str
     :param description: Set the pull request description.
     :type description: Optional(str)
     :param reviewers: Set the new pull request reviewers list.
     :type reviewers: Optional(list)
         Accepts username strings or objects of the format:
         {
             'username': 'nick', 'reasons': ['original author']
         }
     """
 
     source = get_repo_or_error(source_repo)
     target = get_repo_or_error(target_repo)
     if not has_superadmin_permission(apiuser):
         _perms = ('repository.admin', 'repository.write', 'repository.read',)
         validate_repo_permissions(apiuser, source_repo, source, _perms)
 
     full_source_ref = resolve_ref_or_error(source_ref, source)
     full_target_ref = resolve_ref_or_error(target_ref, target)
     source_commit = get_commit_or_error(full_source_ref, source)
     target_commit = get_commit_or_error(full_target_ref, target)
     source_scm = source.scm_instance()
     target_scm = target.scm_instance()
 
     commit_ranges = target_scm.compare(
         target_commit.raw_id, source_commit.raw_id, source_scm,
         merge=True, pre_load=[])
 
     ancestor = target_scm.get_common_ancestor(
         target_commit.raw_id, source_commit.raw_id, source_scm)
 
     if not commit_ranges:
         raise JSONRPCError('no commits found')
 
     if not ancestor:
         raise JSONRPCError('no common ancestor found')
 
     reviewer_objects = Optional.extract(reviewers) or []
     if not isinstance(reviewer_objects, list):
         raise JSONRPCError('reviewers should be specified as a list')
 
     reviewers_reasons = []
     for reviewer_object in reviewer_objects:
         reviewer_reasons = []
         if isinstance(reviewer_object, (basestring, int)):
             reviewer_username = reviewer_object
         else:
             reviewer_username = reviewer_object['username']
             reviewer_reasons = reviewer_object.get('reasons', [])
 
         user = get_user_or_error(reviewer_username)
         reviewers_reasons.append((user.user_id, reviewer_reasons))
 
     pull_request_model = PullRequestModel()
     pull_request = pull_request_model.create(
         created_by=apiuser.user_id,
         source_repo=source_repo,
         source_ref=full_source_ref,
         target_repo=target_repo,
         target_ref=full_target_ref,
         revisions=reversed(
             [commit.raw_id for commit in reversed(commit_ranges)]),
         reviewers=reviewers_reasons,
         title=title,
         description=Optional.extract(description)
     )
 
     Session().commit()
     data = {
         'msg': 'Created new pull request `{}`'.format(title),
         'pull_request_id': pull_request.pull_request_id,
     }
     return data
 
 
 @jsonrpc_method()
 def update_pull_request(
         request, apiuser, repoid, pullrequestid, title=Optional(''),
         description=Optional(''), reviewers=Optional(None),
         update_commits=Optional(None), close_pull_request=Optional(None)):
     """
     Updates a pull request.
 
     :param apiuser: This is filled automatically from the |authtoken|.
     :type apiuser: AuthUser
     :param repoid: The repository name or repository ID.
     :type repoid: str or int
     :param pullrequestid: The pull request ID.
     :type pullrequestid: int
     :param title: Set the pull request title.
     :type title: str
     :param description: Update pull request description.
     :type description: Optional(str)
     :param reviewers: Update pull request reviewers list with new value.
     :type reviewers: Optional(list)
     :param update_commits: Trigger update of commits for this pull request
     :type: update_commits: Optional(bool)
     :param close_pull_request: Close this pull request with rejected state
     :type: close_pull_request: Optional(bool)
 
     Example output:
 
     .. code-block:: bash
 
       id : <id_given_in_input>
       result :
         {
             "msg": "Updated pull request `63`",
             "pull_request": <pull_request_object>,
             "updated_reviewers": {
               "added": [
                 "username"
               ],
               "removed": []
             },
             "updated_commits": {
               "added": [
                 "<sha1_hash>"
               ],
               "common": [
                 "<sha1_hash>",
                 "<sha1_hash>",
               ],
               "removed": []
             }
         }
       error :  null
     """
 
     repo = get_repo_or_error(repoid)
     pull_request = get_pull_request_or_error(pullrequestid)
     if not PullRequestModel().check_user_update(
             pull_request, apiuser, api=True):
         raise JSONRPCError(
             'pull request `%s` update failed, no permission to update.' % (
                 pullrequestid,))
     if pull_request.is_closed():
         raise JSONRPCError(
             'pull request `%s` update failed, pull request is closed' % (
                 pullrequestid,))
 
     reviewer_objects = Optional.extract(reviewers) or []
     if not isinstance(reviewer_objects, list):
         raise JSONRPCError('reviewers should be specified as a list')
 
     reviewers_reasons = []
     reviewer_ids = set()
     for reviewer_object in reviewer_objects:
         reviewer_reasons = []
         if isinstance(reviewer_object, (int, basestring)):
             reviewer_username = reviewer_object
         else:
             reviewer_username = reviewer_object['username']
             reviewer_reasons = reviewer_object.get('reasons', [])
 
         user = get_user_or_error(reviewer_username)
         reviewer_ids.add(user.user_id)
         reviewers_reasons.append((user.user_id, reviewer_reasons))
 
     title = Optional.extract(title)
     description = Optional.extract(description)
     if title or description:
         PullRequestModel().edit(
             pull_request, title or pull_request.title,
             description or pull_request.description)
         Session().commit()
 
     commit_changes = {"added": [], "common": [], "removed": []}
     if str2bool(Optional.extract(update_commits)):
         if PullRequestModel().has_valid_update_type(pull_request):
             update_response = PullRequestModel().update_commits(
                 pull_request)
             commit_changes = update_response.changes or commit_changes
         Session().commit()
 
     reviewers_changes = {"added": [], "removed": []}
     if reviewer_ids:
         added_reviewers, removed_reviewers = \
             PullRequestModel().update_reviewers(pull_request, reviewers_reasons)
 
         reviewers_changes['added'] = sorted(
             [get_user_or_error(n).username for n in added_reviewers])
         reviewers_changes['removed'] = sorted(
             [get_user_or_error(n).username for n in removed_reviewers])
         Session().commit()
 
     if str2bool(Optional.extract(close_pull_request)):
         PullRequestModel().close_pull_request_with_comment(
             pull_request, apiuser, repo)
         Session().commit()
 
     data = {
         'msg': 'Updated pull request `{}`'.format(
             pull_request.pull_request_id),
         'pull_request': pull_request.get_api_data(),
         'updated_commits': commit_changes,
         'updated_reviewers': reviewers_changes
     }
 
     return data

rhodecode/controllers/pullrequests.py

@@ -1,1046 +1,1009 b''
 # -*- coding: utf-8 -*-
 
 # Copyright (C) 2012-2017 RhodeCode GmbH
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License, version 3
 # (only), as published by the Free Software Foundation.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # This program is dual-licensed. If you wish to learn more about the
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 """
 pull requests controller for rhodecode for initializing pull requests
 """
 import types
 
 import peppercorn
 import formencode
 import logging
 import collections
 
 from webob.exc import HTTPNotFound, HTTPForbidden, HTTPBadRequest
 from pylons import request, tmpl_context as c, url
 from pylons.controllers.util import redirect
 from pylons.i18n.translation import _
 from pyramid.threadlocal import get_current_registry
 from sqlalchemy.sql import func
 from sqlalchemy.sql.expression import or_
 
 from rhodecode import events
 from rhodecode.lib import auth, diffs, helpers as h, codeblocks
 from rhodecode.lib.ext_json import json
 from rhodecode.lib.base import (
     BaseRepoController, render, vcs_operation_context)
 from rhodecode.lib.auth import (
     LoginRequired, HasRepoPermissionAnyDecorator, NotAnonymous,
     HasAcceptedRepoType, XHRRequired)
 from rhodecode.lib.channelstream import channelstream_request
 from rhodecode.lib.utils import jsonify
 from rhodecode.lib.utils2 import (
     safe_int, safe_str, str2bool, safe_unicode)
 from rhodecode.lib.vcs.backends.base import (
     EmptyCommit, UpdateFailureReason, EmptyRepository)
 from rhodecode.lib.vcs.exceptions import (
     EmptyRepositoryError, CommitDoesNotExistError, RepositoryRequirementError,
     NodeDoesNotExistError)
 
 from rhodecode.model.changeset_status import ChangesetStatusModel
 from rhodecode.model.comment import CommentsModel
 from rhodecode.model.db import (PullRequest, ChangesetStatus, ChangesetComment,
     Repository, PullRequestVersion)
 from rhodecode.model.forms import PullRequestForm
 from rhodecode.model.meta import Session
-from rhodecode.model.pull_request import PullRequestModel
+from rhodecode.model.pull_request import PullRequestModel, MergeCheck
 
 log = logging.getLogger(__name__)
 
 
 class PullrequestsController(BaseRepoController):
     def __before__(self):
         super(PullrequestsController, self).__before__()
 
     def _load_compare_data(self, pull_request, inline_comments):
         """
         Load context data needed for generating compare diff
 
         :param pull_request: object related to the request
         :param enable_comments: flag to determine if comments are included
         """
         source_repo = pull_request.source_repo
         source_ref_id = pull_request.source_ref_parts.commit_id
 
         target_repo = pull_request.target_repo
         target_ref_id = pull_request.target_ref_parts.commit_id
 
         # despite opening commits for bookmarks/branches/tags, we always
         # convert this to rev to prevent changes after bookmark or branch change
         c.source_ref_type = 'rev'
         c.source_ref = source_ref_id
 
         c.target_ref_type = 'rev'
         c.target_ref = target_ref_id
 
         c.source_repo = source_repo
         c.target_repo = target_repo
 
         c.fulldiff = bool(request.GET.get('fulldiff'))
 
         # diff_limit is the old behavior, will cut off the whole diff
         # if the limit is applied  otherwise will just hide the
         # big files from the front-end
         diff_limit = self.cut_off_limit_diff
         file_limit = self.cut_off_limit_file
 
         pre_load = ["author", "branch", "date", "message"]
 
         c.commit_ranges = []
         source_commit = EmptyCommit()
         target_commit = EmptyCommit()
         c.missing_requirements = False
         try:
             c.commit_ranges = [
                 source_repo.get_commit(commit_id=rev, pre_load=pre_load)
                 for rev in pull_request.revisions]
 
             c.statuses = source_repo.statuses(
                 [x.raw_id for x in c.commit_ranges])
 
             target_commit = source_repo.get_commit(
                 commit_id=safe_str(target_ref_id))
             source_commit = source_repo.get_commit(
                 commit_id=safe_str(source_ref_id))
         except RepositoryRequirementError:
             c.missing_requirements = True
 
         # auto collapse if we have more than limit
         collapse_limit = diffs.DiffProcessor._collapse_commits_over
         c.collapse_all_commits = len(c.commit_ranges) > collapse_limit
 
         c.changes = {}
         c.missing_commits = False
         if (c.missing_requirements or
                 isinstance(source_commit, EmptyCommit) or
                     source_commit == target_commit):
             _parsed = []
             c.missing_commits = True
         else:
             vcs_diff = PullRequestModel().get_diff(pull_request)
             diff_processor = diffs.DiffProcessor(
                 vcs_diff, format='newdiff', diff_limit=diff_limit,
                 file_limit=file_limit, show_full_diff=c.fulldiff)
 
             _parsed = diff_processor.prepare()
             c.limited_diff = isinstance(_parsed, diffs.LimitedDiffContainer)
 
             included_files = {}
             for f in _parsed:
                 included_files[f['filename']] = f['stats']
 
             c.deleted_files = [fname for fname in inline_comments if
                                fname not in included_files]
 
             c.deleted_files_comments = collections.defaultdict(dict)
             for fname, per_line_comments in inline_comments.items():
                 if fname in c.deleted_files:
                     c.deleted_files_comments[fname]['stats'] = 0
                     c.deleted_files_comments[fname]['comments'] = list()
                     for lno, comments in per_line_comments.items():
                         c.deleted_files_comments[fname]['comments'].extend(comments)
 
             def _node_getter(commit):
                 def get_node(fname):
                     try:
                         return commit.get_node(fname)
                     except NodeDoesNotExistError:
                         return None
                 return get_node
 
             c.diffset = codeblocks.DiffSet(
                 repo_name=c.repo_name,
                 source_repo_name=c.source_repo.repo_name,
                 source_node_getter=_node_getter(target_commit),
                 target_node_getter=_node_getter(source_commit),
                 comments=inline_comments
             ).render_patchset(_parsed, target_commit.raw_id, source_commit.raw_id)
 
     def _extract_ordering(self, request):
         column_index = safe_int(request.GET.get('order[0][column]'))
         order_dir = request.GET.get('order[0][dir]', 'desc')
         order_by = request.GET.get(
             'columns[%s][data][sort]' % column_index, 'name_raw')
         return order_by, order_dir
 
     @LoginRequired()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     @HasAcceptedRepoType('git', 'hg')
     def show_all(self, repo_name):
         # filter types
         c.active = 'open'
         c.source = str2bool(request.GET.get('source'))
         c.closed = str2bool(request.GET.get('closed'))
         c.my = str2bool(request.GET.get('my'))
         c.awaiting_review = str2bool(request.GET.get('awaiting_review'))
         c.awaiting_my_review = str2bool(request.GET.get('awaiting_my_review'))
         c.repo_name = repo_name
 
         opened_by = None
         if c.my:
             c.active = 'my'
             opened_by = [c.rhodecode_user.user_id]
 
         statuses = [PullRequest.STATUS_NEW, PullRequest.STATUS_OPEN]
         if c.closed:
             c.active = 'closed'
             statuses = [PullRequest.STATUS_CLOSED]
 
         if c.awaiting_review and not c.source:
             c.active = 'awaiting'
         if c.source and not c.awaiting_review:
             c.active = 'source'
         if c.awaiting_my_review:
             c.active = 'awaiting_my'
 
         data = self._get_pull_requests_list(
             repo_name=repo_name, opened_by=opened_by, statuses=statuses)
         if not request.is_xhr:
             c.data = json.dumps(data['data'])
             c.records_total = data['recordsTotal']
             return render('/pullrequests/pullrequests.mako')
         else:
             return json.dumps(data)
 
     def _get_pull_requests_list(self, repo_name, opened_by, statuses):
         # pagination
         start = safe_int(request.GET.get('start'), 0)
         length = safe_int(request.GET.get('length'), c.visual.dashboard_items)
         order_by, order_dir = self._extract_ordering(request)
 
         if c.awaiting_review:
             pull_requests = PullRequestModel().get_awaiting_review(
                 repo_name, source=c.source, opened_by=opened_by,
                 statuses=statuses, offset=start, length=length,
                 order_by=order_by, order_dir=order_dir)
             pull_requests_total_count = PullRequestModel(
             ).count_awaiting_review(
                 repo_name, source=c.source, statuses=statuses,
                 opened_by=opened_by)
         elif c.awaiting_my_review:
             pull_requests = PullRequestModel().get_awaiting_my_review(
                 repo_name, source=c.source, opened_by=opened_by,
                 user_id=c.rhodecode_user.user_id, statuses=statuses,
                 offset=start, length=length, order_by=order_by,
                 order_dir=order_dir)
             pull_requests_total_count = PullRequestModel(
             ).count_awaiting_my_review(
                 repo_name, source=c.source, user_id=c.rhodecode_user.user_id,
                 statuses=statuses, opened_by=opened_by)
         else:
             pull_requests = PullRequestModel().get_all(
                 repo_name, source=c.source, opened_by=opened_by,
                 statuses=statuses, offset=start, length=length,
                 order_by=order_by, order_dir=order_dir)
             pull_requests_total_count = PullRequestModel().count_all(
                 repo_name, source=c.source, statuses=statuses,
                 opened_by=opened_by)
 
         from rhodecode.lib.utils import PartialRenderer
         _render = PartialRenderer('data_table/_dt_elements.mako')
         data = []
         for pr in pull_requests:
             comments = CommentsModel().get_all_comments(
                 c.rhodecode_db_repo.repo_id, pull_request=pr)
 
             data.append({
                 'name': _render('pullrequest_name',
                                 pr.pull_request_id, pr.target_repo.repo_name),
                 'name_raw': pr.pull_request_id,
                 'status': _render('pullrequest_status',
                                   pr.calculated_review_status()),
                 'title': _render(
                     'pullrequest_title', pr.title, pr.description),
                 'description': h.escape(pr.description),
                 'updated_on': _render('pullrequest_updated_on',
                                       h.datetime_to_time(pr.updated_on)),
                 'updated_on_raw': h.datetime_to_time(pr.updated_on),
                 'created_on': _render('pullrequest_updated_on',
                                       h.datetime_to_time(pr.created_on)),
                 'created_on_raw': h.datetime_to_time(pr.created_on),
                 'author': _render('pullrequest_author',
                                   pr.author.full_contact, ),
                 'author_raw': pr.author.full_name,
                 'comments': _render('pullrequest_comments', len(comments)),
                 'comments_raw': len(comments),
                 'closed': pr.is_closed(),
             })
         # json used to render the grid
         data = ({
             'data': data,
             'recordsTotal': pull_requests_total_count,
             'recordsFiltered': pull_requests_total_count,
         })
         return data
 
     @LoginRequired()
     @NotAnonymous()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     @HasAcceptedRepoType('git', 'hg')
     def index(self):
         source_repo = c.rhodecode_db_repo
 
         try:
             source_repo.scm_instance().get_commit()
         except EmptyRepositoryError:
             h.flash(h.literal(_('There are no commits yet')),
                     category='warning')
             redirect(url('summary_home', repo_name=source_repo.repo_name))
 
         commit_id = request.GET.get('commit')
         branch_ref = request.GET.get('branch')
         bookmark_ref = request.GET.get('bookmark')
 
         try:
             source_repo_data = PullRequestModel().generate_repo_data(
                 source_repo, commit_id=commit_id,
                 branch=branch_ref, bookmark=bookmark_ref)
         except CommitDoesNotExistError as e:
             log.exception(e)
             h.flash(_('Commit does not exist'), 'error')
             redirect(url('pullrequest_home', repo_name=source_repo.repo_name))
 
         default_target_repo = source_repo
 
         if source_repo.parent:
             parent_vcs_obj = source_repo.parent.scm_instance()
             if parent_vcs_obj and not parent_vcs_obj.is_empty():
                 # change default if we have a parent repo
                 default_target_repo = source_repo.parent
 
         target_repo_data = PullRequestModel().generate_repo_data(
             default_target_repo)
 
         selected_source_ref = source_repo_data['refs']['selected_ref']
 
         title_source_ref = selected_source_ref.split(':', 2)[1]
         c.default_title = PullRequestModel().generate_pullrequest_title(
             source=source_repo.repo_name,
             source_ref=title_source_ref,
             target=default_target_repo.repo_name
         )
 
         c.default_repo_data = {
             'source_repo_name': source_repo.repo_name,
             'source_refs_json': json.dumps(source_repo_data),
             'target_repo_name': default_target_repo.repo_name,
             'target_refs_json': json.dumps(target_repo_data),
         }
         c.default_source_ref = selected_source_ref
 
         return render('/pullrequests/pullrequest.mako')
 
     @LoginRequired()
     @NotAnonymous()
     @XHRRequired()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     @jsonify
     def get_repo_refs(self, repo_name, target_repo_name):
         repo = Repository.get_by_repo_name(target_repo_name)
         if not repo:
             raise HTTPNotFound
         return PullRequestModel().generate_repo_data(repo)
 
     @LoginRequired()
     @NotAnonymous()
     @XHRRequired()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     @jsonify
     def get_repo_destinations(self, repo_name):
         repo = Repository.get_by_repo_name(repo_name)
         if not repo:
             raise HTTPNotFound
         filter_query = request.GET.get('query')
 
         query = Repository.query() \
             .order_by(func.length(Repository.repo_name)) \
             .filter(or_(
             Repository.repo_name == repo.repo_name,
             Repository.fork_id == repo.repo_id))
 
         if filter_query:
             ilike_expression = u'%{}%'.format(safe_unicode(filter_query))
             query = query.filter(
                 Repository.repo_name.ilike(ilike_expression))
 
         add_parent = False
         if repo.parent:
             if filter_query in repo.parent.repo_name:
                 parent_vcs_obj = repo.parent.scm_instance()
                 if parent_vcs_obj and not parent_vcs_obj.is_empty():
                     add_parent = True
 
         limit = 20 - 1 if add_parent else 20
         all_repos = query.limit(limit).all()
         if add_parent:
             all_repos += [repo.parent]
 
         repos = []
         for obj in self.scm_model.get_repos(all_repos):
             repos.append({
                 'id': obj['name'],
                 'text': obj['name'],
                 'type': 'repo',
                 'obj': obj['dbrepo']
             })
 
         data = {
             'more': False,
             'results': [{
                 'text': _('Repositories'),
                 'children': repos
             }] if repos else []
         }
         return data
 
     @LoginRequired()
     @NotAnonymous()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     @HasAcceptedRepoType('git', 'hg')
     @auth.CSRFRequired()
     def create(self, repo_name):
         repo = Repository.get_by_repo_name(repo_name)
         if not repo:
             raise HTTPNotFound
 
         controls = peppercorn.parse(request.POST.items())
 
         try:
             _form = PullRequestForm(repo.repo_id)().to_python(controls)
         except formencode.Invalid as errors:
             if errors.error_dict.get('revisions'):
                 msg = 'Revisions: %s' % errors.error_dict['revisions']
             elif errors.error_dict.get('pullrequest_title'):
                 msg = _('Pull request requires a title with min. 3 chars')
             else:
                 msg = _('Error creating pull request: {}').format(errors)
             log.exception(msg)
             h.flash(msg, 'error')
 
             # would rather just go back to form ...
             return redirect(url('pullrequest_home', repo_name=repo_name))
 
         source_repo = _form['source_repo']
         source_ref = _form['source_ref']
         target_repo = _form['target_repo']
         target_ref = _form['target_ref']
         commit_ids = _form['revisions'][::-1]
         reviewers = [
             (r['user_id'], r['reasons']) for r in _form['review_members']]
 
         # find the ancestor for this pr
         source_db_repo = Repository.get_by_repo_name(_form['source_repo'])
         target_db_repo = Repository.get_by_repo_name(_form['target_repo'])
 
         source_scm = source_db_repo.scm_instance()
         target_scm = target_db_repo.scm_instance()
 
         source_commit = source_scm.get_commit(source_ref.split(':')[-1])
         target_commit = target_scm.get_commit(target_ref.split(':')[-1])
 
         ancestor = source_scm.get_common_ancestor(
             source_commit.raw_id, target_commit.raw_id, target_scm)
 
         target_ref_type, target_ref_name, __ = _form['target_ref'].split(':')
         target_ref = ':'.join((target_ref_type, target_ref_name, ancestor))
 
         pullrequest_title = _form['pullrequest_title']
         title_source_ref = source_ref.split(':', 2)[1]
         if not pullrequest_title:
             pullrequest_title = PullRequestModel().generate_pullrequest_title(
                 source=source_repo,
                 source_ref=title_source_ref,
                 target=target_repo
             )
 
         description = _form['pullrequest_desc']
         try:
             pull_request = PullRequestModel().create(
                 c.rhodecode_user.user_id, source_repo, source_ref, target_repo,
                 target_ref, commit_ids, reviewers, pullrequest_title,
                 description
             )
             Session().commit()
             h.flash(_('Successfully opened new pull request'),
                     category='success')
         except Exception as e:
             msg = _('Error occurred during sending pull request')
             log.exception(msg)
             h.flash(msg, category='error')
             return redirect(url('pullrequest_home', repo_name=repo_name))
 
         return redirect(url('pullrequest_show', repo_name=target_repo,
                             pull_request_id=pull_request.pull_request_id))
 
     @LoginRequired()
     @NotAnonymous()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     @auth.CSRFRequired()
     @jsonify
     def update(self, repo_name, pull_request_id):
         pull_request_id = safe_int(pull_request_id)
         pull_request = PullRequest.get_or_404(pull_request_id)
         # only owner or admin can update it
         allowed_to_update = PullRequestModel().check_user_update(
             pull_request, c.rhodecode_user)
         if allowed_to_update:
             controls = peppercorn.parse(request.POST.items())
 
             if 'review_members' in controls:
                 self._update_reviewers(
                     pull_request_id, controls['review_members'])
             elif str2bool(request.POST.get('update_commits', 'false')):
                 self._update_commits(pull_request)
             elif str2bool(request.POST.get('close_pull_request', 'false')):
                 self._reject_close(pull_request)
             elif str2bool(request.POST.get('edit_pull_request', 'false')):
                 self._edit_pull_request(pull_request)
             else:
                 raise HTTPBadRequest()
             return True
         raise HTTPForbidden()
 
     def _edit_pull_request(self, pull_request):
         try:
             PullRequestModel().edit(
                 pull_request, request.POST.get('title'),
                 request.POST.get('description'))
         except ValueError:
             msg = _(u'Cannot update closed pull requests.')
             h.flash(msg, category='error')
             return
         else:
             Session().commit()
 
         msg = _(u'Pull request title & description updated.')
         h.flash(msg, category='success')
         return
 
     def _update_commits(self, pull_request):
         resp = PullRequestModel().update_commits(pull_request)
 
         if resp.executed:
             msg = _(
                 u'Pull request updated to "{source_commit_id}" with '
                 u'{count_added} added, {count_removed} removed commits.')
             msg = msg.format(
                 source_commit_id=pull_request.source_ref_parts.commit_id,
                 count_added=len(resp.changes.added),
                 count_removed=len(resp.changes.removed))
             h.flash(msg, category='success')
 
             registry = get_current_registry()
             rhodecode_plugins = getattr(registry, 'rhodecode_plugins', {})
             channelstream_config = rhodecode_plugins.get('channelstream', {})
             if channelstream_config.get('enabled'):
                 message = msg + (
                     ' - <a onclick="window.location.reload()">'
                     '<strong>{}</strong></a>'.format(_('Reload page')))
                 channel = '/repo${}$/pr/{}'.format(
                     pull_request.target_repo.repo_name,
                     pull_request.pull_request_id
                 )
                 payload = {
                     'type': 'message',
                     'user': 'system',
                     'exclude_users': [request.user.username],
                     'channel': channel,
                     'message': {
                         'message': message,
                         'level': 'success',
                         'topic': '/notifications'
                     }
                 }
                 channelstream_request(
                     channelstream_config, [payload], '/message',
                     raise_exc=False)
         else:
             msg = PullRequestModel.UPDATE_STATUS_MESSAGES[resp.reason]
             warning_reasons = [
                 UpdateFailureReason.NO_CHANGE,
                 UpdateFailureReason.WRONG_REF_TPYE,
             ]
             category = 'warning' if resp.reason in warning_reasons else 'error'
             h.flash(msg, category=category)
 
     @auth.CSRFRequired()
     @LoginRequired()
     @NotAnonymous()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     def merge(self, repo_name, pull_request_id):
         """
         POST /{repo_name}/pull-request/{pull_request_id}
 
         Merge will perform a server-side merge of the specified
         pull request, if the pull request is approved and mergeable.
-        After succesfull merging, the pull request is automatically
+        After successful merging, the pull request is automatically
         closed, with a relevant comment.
         """
         pull_request_id = safe_int(pull_request_id)
         pull_request = PullRequest.get_or_404(pull_request_id)
         user = c.rhodecode_user
 
-        if self._meets_merge_pre_conditions(pull_request, user):
+        check = MergeCheck.validate(pull_request, user)
+        merge_possible = not check.failed
+
+        for err_type, error_msg in check.errors:
+            h.flash(error_msg, category=err_type)
+
+        if merge_possible:
             log.debug("Pre-conditions checked, trying to merge.")
             extras = vcs_operation_context(
                 request.environ, repo_name=pull_request.target_repo.repo_name,
                 username=user.username, action='push',
                 scm=pull_request.target_repo.repo_type)
             self._merge_pull_request(pull_request, user, extras)
 
         return redirect(url(
             'pullrequest_show',
             repo_name=pull_request.target_repo.repo_name,
             pull_request_id=pull_request.pull_request_id))
 
-    def _meets_merge_pre_conditions(self, pull_request, user):
-        if not PullRequestModel().check_user_merge(pull_request, user):
-            raise HTTPForbidden()
-
-        merge_status, msg = PullRequestModel().merge_status(pull_request)
-        if not merge_status:
-            log.debug("Cannot merge, not mergeable.")
-            h.flash(msg, category='error')
-            return False
-
-        if (pull_request.calculated_review_status()
-            is not ChangesetStatus.STATUS_APPROVED):
-            log.debug("Cannot merge, approval is pending.")
-            msg = _('Pull request reviewer approval is pending.')
-            h.flash(msg, category='error')
-            return False
-
-        todos = CommentsModel().get_unresolved_todos(pull_request)
-        if todos:
-            log.debug("Cannot merge, unresolved todos left.")
-            if len(todos) == 1:
-                msg = _('Cannot merge, {} todo still not resolved.').format(
-                    len(todos))
-            else:
-                msg = _('Cannot merge, {} todos still not resolved.').format(
-                    len(todos))
-            h.flash(msg, category='error')
-            return False
-        return True
-
     def _merge_pull_request(self, pull_request, user, extras):
         merge_resp = PullRequestModel().merge(
             pull_request, user, extras=extras)
 
         if merge_resp.executed:
             log.debug("The merge was successful, closing the pull request.")
             PullRequestModel().close_pull_request(
                 pull_request.pull_request_id, user)
             Session().commit()
             msg = _('Pull request was successfully merged and closed.')
             h.flash(msg, category='success')
         else:
             log.debug(
                 "The merge was not successful. Merge response: %s",
                 merge_resp)
             msg = PullRequestModel().merge_status_message(
                 merge_resp.failure_reason)
             h.flash(msg, category='error')
 
     def _update_reviewers(self, pull_request_id, review_members):
         reviewers = [
             (int(r['user_id']), r['reasons']) for r in review_members]
         PullRequestModel().update_reviewers(pull_request_id, reviewers)
         Session().commit()
 
     def _reject_close(self, pull_request):
         if pull_request.is_closed():
             raise HTTPForbidden()
 
         PullRequestModel().close_pull_request_with_comment(
             pull_request, c.rhodecode_user, c.rhodecode_db_repo)
         Session().commit()
 
     @LoginRequired()
     @NotAnonymous()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     @auth.CSRFRequired()
     @jsonify
     def delete(self, repo_name, pull_request_id):
         pull_request_id = safe_int(pull_request_id)
         pull_request = PullRequest.get_or_404(pull_request_id)
         # only owner can delete it !
         if pull_request.author.user_id == c.rhodecode_user.user_id:
             PullRequestModel().delete(pull_request)
             Session().commit()
             h.flash(_('Successfully deleted pull request'),
                     category='success')
             return redirect(url('my_account_pullrequests'))
         raise HTTPForbidden()
 
     def _get_pr_version(self, pull_request_id, version=None):
         pull_request_id = safe_int(pull_request_id)
         at_version = None
 
         if version and version == 'latest':
             pull_request_ver = PullRequest.get(pull_request_id)
             pull_request_obj = pull_request_ver
             _org_pull_request_obj = pull_request_obj
             at_version = 'latest'
         elif version:
             pull_request_ver = PullRequestVersion.get_or_404(version)
             pull_request_obj = pull_request_ver
             _org_pull_request_obj = pull_request_ver.pull_request
             at_version = pull_request_ver.pull_request_version_id
         else:
             _org_pull_request_obj = pull_request_obj = PullRequest.get_or_404(pull_request_id)
 
         pull_request_display_obj = PullRequest.get_pr_display_object(
             pull_request_obj, _org_pull_request_obj)
         return _org_pull_request_obj, pull_request_obj, \
                pull_request_display_obj, at_version
 
     def _get_pr_version_changes(self, version, pull_request_latest):
         """
         Generate changes commits, and diff data based on the current pr version
         """
 
         #TODO(marcink): save those changes as JSON metadata for chaching later.
 
         # fake the version to add the "initial" state object
         pull_request_initial = PullRequest.get_pr_display_object(
             pull_request_latest, pull_request_latest,
             internal_methods=['get_commit', 'versions'])
         pull_request_initial.revisions = []
         pull_request_initial.source_repo.get_commit = types.MethodType(
             lambda *a, **k: EmptyCommit(), pull_request_initial)
         pull_request_initial.source_repo.scm_instance = types.MethodType(
             lambda *a, **k: EmptyRepository(), pull_request_initial)
 
         _changes_versions = [pull_request_latest] + \
                             list(reversed(c.versions)) + \
                             [pull_request_initial]
 
         if version == 'latest':
             index = 0
         else:
             for pos, prver in enumerate(_changes_versions):
                 ver = getattr(prver, 'pull_request_version_id', -1)
                 if ver == safe_int(version):
                     index = pos
                     break
             else:
                 index = 0
 
         cur_obj = _changes_versions[index]
         prev_obj = _changes_versions[index + 1]
 
         old_commit_ids = set(prev_obj.revisions)
         new_commit_ids = set(cur_obj.revisions)
 
         changes = PullRequestModel()._calculate_commit_id_changes(
             old_commit_ids, new_commit_ids)
 
         old_diff_data, new_diff_data = PullRequestModel()._generate_update_diffs(
             cur_obj, prev_obj)
         file_changes = PullRequestModel()._calculate_file_changes(
             old_diff_data, new_diff_data)
         return changes, file_changes
 
     @LoginRequired()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     def show(self, repo_name, pull_request_id):
         pull_request_id = safe_int(pull_request_id)
         version = request.GET.get('version')
         merge_checks = request.GET.get('merge_checks')
 
         (pull_request_latest,
          pull_request_at_ver,
          pull_request_display_obj,
          at_version) = self._get_pr_version(pull_request_id, version=version)
 
         c.template_context['pull_request_data']['pull_request_id'] = \
             pull_request_id
 
         # pull_requests repo_name we opened it against
         # ie. target_repo must match
         if repo_name != pull_request_at_ver.target_repo.repo_name:
             raise HTTPNotFound
 
         c.shadow_clone_url = PullRequestModel().get_shadow_clone_url(
             pull_request_at_ver)
 
         c.ancestor = None  # TODO: add ancestor here
         c.pull_request = pull_request_display_obj
         c.pull_request_latest = pull_request_latest
 
         pr_closed = pull_request_latest.is_closed()
         if at_version and not at_version == 'latest':
             c.allowed_to_change_status = False
             c.allowed_to_update = False
             c.allowed_to_merge = False
             c.allowed_to_delete = False
             c.allowed_to_comment = False
         else:
             c.allowed_to_change_status = PullRequestModel(). \
                 check_user_change_status(pull_request_at_ver, c.rhodecode_user)
             c.allowed_to_update = PullRequestModel().check_user_update(
                 pull_request_latest, c.rhodecode_user) and not pr_closed
             c.allowed_to_merge = PullRequestModel().check_user_merge(
                 pull_request_latest, c.rhodecode_user) and not pr_closed
             c.allowed_to_delete = PullRequestModel().check_user_delete(
                 pull_request_latest, c.rhodecode_user) and not pr_closed
             c.allowed_to_comment = not pr_closed
 
         cc_model = CommentsModel()
 
         c.pull_request_reviewers = pull_request_at_ver.reviewers_statuses()
         c.pull_request_review_status = pull_request_at_ver.calculated_review_status()
 
         c.versions = pull_request_display_obj.versions()
         c.at_version = at_version
         c.at_version_num = at_version if at_version and at_version != 'latest' else None
         c.at_version_pos = ChangesetComment.get_index_from_version(
             c.at_version_num, c.versions)
 
         # GENERAL COMMENTS with versions #
         q = cc_model._all_general_comments_of_pull_request(pull_request_latest)
         general_comments = q.order_by(ChangesetComment.pull_request_version_id.asc())
 
         # pick comments we want to render at current version
         c.comment_versions = cc_model.aggregate_comments(
             general_comments, c.versions, c.at_version_num)
         c.comments = c.comment_versions[c.at_version_num]['until']
 
         # INLINE COMMENTS with versions  #
         q = cc_model._all_inline_comments_of_pull_request(pull_request_latest)
         inline_comments = q.order_by(ChangesetComment.pull_request_version_id.asc())
         c.inline_versions = cc_model.aggregate_comments(
             inline_comments, c.versions, c.at_version_num, inline=True)
 
         # if we use version, then do not show later comments
         # than current version
         display_inline_comments = collections.defaultdict(lambda: collections.defaultdict(list))
         for co in inline_comments:
             if c.at_version_num:
                 # pick comments that are at least UPTO given version, so we
                 # don't render comments for higher version
                 should_render = co.pull_request_version_id and \
                                 co.pull_request_version_id <= c.at_version_num
             else:
                 # showing all, for 'latest'
                 should_render = True
 
             if should_render:
                 display_inline_comments[co.f_path][co.line_no].append(co)
 
-        c.pr_merge_checks = []
-        c.pr_merge_status, c.pr_merge_msg = PullRequestModel().merge_status(
-            pull_request_at_ver)
-        c.pr_merge_checks.append(['warning' if not c.pr_merge_status else 'success', c.pr_merge_msg])
-
-        if c.pull_request_review_status != ChangesetStatus.STATUS_APPROVED:
-            approval_msg = _('Reviewer approval is pending.')
-            c.pr_merge_status = False
-            c.pr_merge_checks.append(['warning', approval_msg])
-
-        todos = cc_model.get_unresolved_todos(pull_request_latest)
-        if todos:
-            c.pr_merge_status = False
-            if len(todos) == 1:
-                msg = _('{} todo still not resolved.').format(len(todos))
-            else:
-                msg = _('{} todos still not resolved.').format(len(todos))
-            c.pr_merge_checks.append(['warning', msg])
+        _merge_check = MergeCheck.validate(
+            pull_request_latest, user=c.rhodecode_user)
+        c.pr_merge_errors = _merge_check.errors
+        c.pr_merge_possible = not _merge_check.failed
+        c.pr_merge_message = _merge_check.merge_msg
 
         if merge_checks:
             return render('/pullrequests/pullrequest_merge_checks.mako')
 
         # load compare data into template context
         self._load_compare_data(pull_request_at_ver, display_inline_comments)
 
         # this is a hack to properly display links, when creating PR, the
         # compare view and others uses different notation, and
         # compare_commits.mako renders links based on the target_repo.
         # We need to swap that here to generate it properly on the html side
         c.target_repo = c.source_repo
 
         if c.allowed_to_update:
             force_close = ('forced_closed', _('Close Pull Request'))
             statuses = ChangesetStatus.STATUSES + [force_close]
         else:
             statuses = ChangesetStatus.STATUSES
         c.commit_statuses = statuses
 
         c.changes = None
         c.file_changes = None
 
         c.show_version_changes = 1  # control flag, not used yet
 
         if at_version and c.show_version_changes:
             c.changes, c.file_changes = self._get_pr_version_changes(
                 version, pull_request_latest)
 
         return render('/pullrequests/pullrequest_show.mako')
 
     @LoginRequired()
     @NotAnonymous()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     @auth.CSRFRequired()
     @jsonify
     def comment(self, repo_name, pull_request_id):
         pull_request_id = safe_int(pull_request_id)
         pull_request = PullRequest.get_or_404(pull_request_id)
         if pull_request.is_closed():
             raise HTTPForbidden()
 
         # TODO: johbo: Re-think this bit, "approved_closed" does not exist
         # as a changeset status, still we want to send it in one value.
         status = request.POST.get('changeset_status', None)
         text = request.POST.get('text')
         comment_type = request.POST.get('comment_type')
         resolves_comment_id = request.POST.get('resolves_comment_id', None)
 
         if status and '_closed' in status:
             close_pr = True
             status = status.replace('_closed', '')
         else:
             close_pr = False
 
         forced = (status == 'forced')
         if forced:
             status = 'rejected'
 
         allowed_to_change_status = PullRequestModel().check_user_change_status(
             pull_request, c.rhodecode_user)
 
         if status and allowed_to_change_status:
             message = (_('Status change %(transition_icon)s %(status)s')
                        % {'transition_icon': '>',
                           'status': ChangesetStatus.get_status_lbl(status)})
             if close_pr:
                 message = _('Closing with') + ' ' + message
             text = text or message
         comm = CommentsModel().create(
             text=text,
             repo=c.rhodecode_db_repo.repo_id,
             user=c.rhodecode_user.user_id,
             pull_request=pull_request_id,
             f_path=request.POST.get('f_path'),
             line_no=request.POST.get('line'),
             status_change=(ChangesetStatus.get_status_lbl(status)
                            if status and allowed_to_change_status else None),
             status_change_type=(status
                                 if status and allowed_to_change_status else None),
             closing_pr=close_pr,
             comment_type=comment_type,
             resolves_comment_id=resolves_comment_id
         )
 
         if allowed_to_change_status:
             old_calculated_status = pull_request.calculated_review_status()
             # get status if set !
             if status:
                 ChangesetStatusModel().set_status(
                     c.rhodecode_db_repo.repo_id,
                     status,
                     c.rhodecode_user.user_id,
                     comm,
                     pull_request=pull_request_id
                 )
 
             Session().flush()
             events.trigger(events.PullRequestCommentEvent(pull_request, comm))
             # we now calculate the status of pull request, and based on that
             # calculation we set the commits status
             calculated_status = pull_request.calculated_review_status()
             if old_calculated_status != calculated_status:
                 PullRequestModel()._trigger_pull_request_hook(
                     pull_request, c.rhodecode_user, 'review_status_change')
 
             calculated_status_lbl = ChangesetStatus.get_status_lbl(
                 calculated_status)
 
             if close_pr:
                 status_completed = (
                     calculated_status in [ChangesetStatus.STATUS_APPROVED,
                                           ChangesetStatus.STATUS_REJECTED])
                 if forced or status_completed:
                     PullRequestModel().close_pull_request(
                         pull_request_id, c.rhodecode_user)
                 else:
                     h.flash(_('Closing pull request on other statuses than '
                               'rejected or approved is forbidden. '
                               'Calculated status from all reviewers '
                               'is currently: %s') % calculated_status_lbl,
                             category='warning')
 
         Session().commit()
 
         if not request.is_xhr:
             return redirect(h.url('pullrequest_show', repo_name=repo_name,
                                   pull_request_id=pull_request_id))
 
         data = {
             'target_id': h.safeid(h.safe_unicode(request.POST.get('f_path'))),
         }
         if comm:
             c.co = comm
             c.inline_comment = True if comm.line_no else False
             data.update(comm.get_dict())
             data.update({'rendered_text':
                              render('changeset/changeset_comment_block.mako')})
 
         return data
 
     @LoginRequired()
     @NotAnonymous()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     @auth.CSRFRequired()
     @jsonify
     def delete_comment(self, repo_name, comment_id):
         return self._delete_comment(comment_id)
 
     def _delete_comment(self, comment_id):
         comment_id = safe_int(comment_id)
         co = ChangesetComment.get_or_404(comment_id)
         if co.pull_request.is_closed():
             # don't allow deleting comments on closed pull request
             raise HTTPForbidden()
 
         is_owner = co.author.user_id == c.rhodecode_user.user_id
         is_repo_admin = h.HasRepoPermissionAny('repository.admin')(c.repo_name)
         if h.HasPermissionAny('hg.admin')() or is_repo_admin or is_owner:
             old_calculated_status = co.pull_request.calculated_review_status()
             CommentsModel().delete(comment=co)
             Session().commit()
             calculated_status = co.pull_request.calculated_review_status()
             if old_calculated_status != calculated_status:
                 PullRequestModel()._trigger_pull_request_hook(
                     co.pull_request, c.rhodecode_user, 'review_status_change')
             return True
         else:
             raise HTTPForbidden()

rhodecode/model/pull_request.py

@@ -1,1318 +1,1398 b''
 # -*- coding: utf-8 -*-
 
 # Copyright (C) 2012-2017 RhodeCode GmbH
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License, version 3
 # (only), as published by the Free Software Foundation.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # This program is dual-licensed. If you wish to learn more about the
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 
 """
 pull request model for RhodeCode
 """
 
 from collections import namedtuple
 import json
 import logging
 import datetime
 import urllib
 
 from pylons.i18n.translation import _
 from pylons.i18n.translation import lazy_ugettext
 from sqlalchemy import or_
 
 from rhodecode.lib import helpers as h, hooks_utils, diffs
 from rhodecode.lib.compat import OrderedDict
 from rhodecode.lib.hooks_daemon import prepare_callback_daemon
 from rhodecode.lib.markup_renderer import (
     DEFAULT_COMMENTS_RENDERER, RstTemplateRenderer)
 from rhodecode.lib.utils import action_logger
 from rhodecode.lib.utils2 import safe_unicode, safe_str, md5_safe
 from rhodecode.lib.vcs.backends.base import (
     Reference, MergeResponse, MergeFailureReason, UpdateFailureReason)
 from rhodecode.lib.vcs.conf import settings as vcs_settings
 from rhodecode.lib.vcs.exceptions import (
     CommitDoesNotExistError, EmptyRepositoryError)
 from rhodecode.model import BaseModel
 from rhodecode.model.changeset_status import ChangesetStatusModel
 from rhodecode.model.comment import CommentsModel
 from rhodecode.model.db import (
     PullRequest, PullRequestReviewers, ChangesetStatus,
     PullRequestVersion, ChangesetComment)
 from rhodecode.model.meta import Session
 from rhodecode.model.notification import NotificationModel, \
     EmailNotificationModel
 from rhodecode.model.scm import ScmModel
 from rhodecode.model.settings import VcsSettingsModel
 
 
 log = logging.getLogger(__name__)
 
 
 # Data structure to hold the response data when updating commits during a pull
 # request update.
 UpdateResponse = namedtuple(
     'UpdateResponse', 'executed, reason, new, old, changes')
 
 
 class PullRequestModel(BaseModel):
 
     cls = PullRequest
 
     DIFF_CONTEXT = 3
 
     MERGE_STATUS_MESSAGES = {
         MergeFailureReason.NONE: lazy_ugettext(
             'This pull request can be automatically merged.'),
         MergeFailureReason.UNKNOWN: lazy_ugettext(
             'This pull request cannot be merged because of an unhandled'
             ' exception.'),
         MergeFailureReason.MERGE_FAILED: lazy_ugettext(
             'This pull request cannot be merged because of conflicts.'),
         MergeFailureReason.PUSH_FAILED: lazy_ugettext(
             'This pull request could not be merged because push to target'
             ' failed.'),
         MergeFailureReason.TARGET_IS_NOT_HEAD: lazy_ugettext(
             'This pull request cannot be merged because the target is not a'
             ' head.'),
         MergeFailureReason.HG_SOURCE_HAS_MORE_BRANCHES: lazy_ugettext(
             'This pull request cannot be merged because the source contains'
             ' more branches than the target.'),
         MergeFailureReason.HG_TARGET_HAS_MULTIPLE_HEADS: lazy_ugettext(
             'This pull request cannot be merged because the target has'
             ' multiple heads.'),
         MergeFailureReason.TARGET_IS_LOCKED: lazy_ugettext(
             'This pull request cannot be merged because the target repository'
             ' is locked.'),
         MergeFailureReason._DEPRECATED_MISSING_COMMIT: lazy_ugettext(
             'This pull request cannot be merged because the target or the '
             'source reference is missing.'),
         MergeFailureReason.MISSING_TARGET_REF: lazy_ugettext(
             'This pull request cannot be merged because the target '
             'reference is missing.'),
         MergeFailureReason.MISSING_SOURCE_REF: lazy_ugettext(
             'This pull request cannot be merged because the source '
             'reference is missing.'),
         MergeFailureReason.SUBREPO_MERGE_FAILED: lazy_ugettext(
             'This pull request cannot be merged because of conflicts related '
             'to sub repositories.'),
     }
 
     UPDATE_STATUS_MESSAGES = {
         UpdateFailureReason.NONE: lazy_ugettext(
             'Pull request update successful.'),
         UpdateFailureReason.UNKNOWN: lazy_ugettext(
             'Pull request update failed because of an unknown error.'),
         UpdateFailureReason.NO_CHANGE: lazy_ugettext(
             'No update needed because the source reference is already '
             'up to date.'),
         UpdateFailureReason.WRONG_REF_TPYE: lazy_ugettext(
             'Pull request cannot be updated because the reference type is '
             'not supported for an update.'),
         UpdateFailureReason.MISSING_TARGET_REF: lazy_ugettext(
             'This pull request cannot be updated because the target '
             'reference is missing.'),
         UpdateFailureReason.MISSING_SOURCE_REF: lazy_ugettext(
             'This pull request cannot be updated because the source '
             'reference is missing.'),
     }
 
     def __get_pull_request(self, pull_request):
         return self._get_instance((
             PullRequest, PullRequestVersion), pull_request)
 
     def _check_perms(self, perms, pull_request, user, api=False):
         if not api:
             return h.HasRepoPermissionAny(*perms)(
                 user=user, repo_name=pull_request.target_repo.repo_name)
         else:
             return h.HasRepoPermissionAnyApi(*perms)(
                 user=user, repo_name=pull_request.target_repo.repo_name)
 
     def check_user_read(self, pull_request, user, api=False):
         _perms = ('repository.admin', 'repository.write', 'repository.read',)
         return self._check_perms(_perms, pull_request, user, api)
 
     def check_user_merge(self, pull_request, user, api=False):
         _perms = ('repository.admin', 'repository.write', 'hg.admin',)
         return self._check_perms(_perms, pull_request, user, api)
 
     def check_user_update(self, pull_request, user, api=False):
         owner = user.user_id == pull_request.user_id
         return self.check_user_merge(pull_request, user, api) or owner
 
     def check_user_delete(self, pull_request, user):
         owner = user.user_id == pull_request.user_id
         _perms = ('repository.admin')
         return self._check_perms(_perms, pull_request, user) or owner
 
     def check_user_change_status(self, pull_request, user, api=False):
         reviewer = user.user_id in [x.user_id for x in
                                     pull_request.reviewers]
         return self.check_user_update(pull_request, user, api) or reviewer
 
     def get(self, pull_request):
         return self.__get_pull_request(pull_request)
 
     def _prepare_get_all_query(self, repo_name, source=False, statuses=None,
                                opened_by=None, order_by=None,
                                order_dir='desc'):
         repo = None
         if repo_name:
             repo = self._get_repo(repo_name)
 
         q = PullRequest.query()
 
         # source or target
         if repo and source:
             q = q.filter(PullRequest.source_repo == repo)
         elif repo:
             q = q.filter(PullRequest.target_repo == repo)
 
         # closed,opened
         if statuses:
             q = q.filter(PullRequest.status.in_(statuses))
 
         # opened by filter
         if opened_by:
             q = q.filter(PullRequest.user_id.in_(opened_by))
 
         if order_by:
             order_map = {
                 'name_raw': PullRequest.pull_request_id,
                 'title': PullRequest.title,
                 'updated_on_raw': PullRequest.updated_on,
                 'target_repo': PullRequest.target_repo_id
             }
             if order_dir == 'asc':
                 q = q.order_by(order_map[order_by].asc())
             else:
                 q = q.order_by(order_map[order_by].desc())
 
         return q
 
     def count_all(self, repo_name, source=False, statuses=None,
                   opened_by=None):
         """
         Count the number of pull requests for a specific repository.
 
         :param repo_name: target or source repo
         :param source: boolean flag to specify if repo_name refers to source
         :param statuses: list of pull request statuses
         :param opened_by: author user of the pull request
         :returns: int number of pull requests
         """
         q = self._prepare_get_all_query(
             repo_name, source=source, statuses=statuses, opened_by=opened_by)
 
         return q.count()
 
     def get_all(self, repo_name, source=False, statuses=None, opened_by=None,
                 offset=0, length=None, order_by=None, order_dir='desc'):
         """
         Get all pull requests for a specific repository.
 
         :param repo_name: target or source repo
         :param source: boolean flag to specify if repo_name refers to source
         :param statuses: list of pull request statuses
         :param opened_by: author user of the pull request
         :param offset: pagination offset
         :param length: length of returned list
         :param order_by: order of the returned list
         :param order_dir: 'asc' or 'desc' ordering direction
         :returns: list of pull requests
         """
         q = self._prepare_get_all_query(
             repo_name, source=source, statuses=statuses, opened_by=opened_by,
             order_by=order_by, order_dir=order_dir)
 
         if length:
             pull_requests = q.limit(length).offset(offset).all()
         else:
             pull_requests = q.all()
 
         return pull_requests
 
     def count_awaiting_review(self, repo_name, source=False, statuses=None,
                               opened_by=None):
         """
         Count the number of pull requests for a specific repository that are
         awaiting review.
 
         :param repo_name: target or source repo
         :param source: boolean flag to specify if repo_name refers to source
         :param statuses: list of pull request statuses
         :param opened_by: author user of the pull request
         :returns: int number of pull requests
         """
         pull_requests = self.get_awaiting_review(
             repo_name, source=source, statuses=statuses, opened_by=opened_by)
 
         return len(pull_requests)
 
     def get_awaiting_review(self, repo_name, source=False, statuses=None,
                             opened_by=None, offset=0, length=None,
                             order_by=None, order_dir='desc'):
         """
         Get all pull requests for a specific repository that are awaiting
         review.
 
         :param repo_name: target or source repo
         :param source: boolean flag to specify if repo_name refers to source
         :param statuses: list of pull request statuses
         :param opened_by: author user of the pull request
         :param offset: pagination offset
         :param length: length of returned list
         :param order_by: order of the returned list
         :param order_dir: 'asc' or 'desc' ordering direction
         :returns: list of pull requests
         """
         pull_requests = self.get_all(
             repo_name, source=source, statuses=statuses, opened_by=opened_by,
             order_by=order_by, order_dir=order_dir)
 
         _filtered_pull_requests = []
         for pr in pull_requests:
             status = pr.calculated_review_status()
             if status in [ChangesetStatus.STATUS_NOT_REVIEWED,
                           ChangesetStatus.STATUS_UNDER_REVIEW]:
                 _filtered_pull_requests.append(pr)
         if length:
             return _filtered_pull_requests[offset:offset+length]
         else:
             return _filtered_pull_requests
 
     def count_awaiting_my_review(self, repo_name, source=False, statuses=None,
                                  opened_by=None, user_id=None):
         """
         Count the number of pull requests for a specific repository that are
         awaiting review from a specific user.
 
         :param repo_name: target or source repo
         :param source: boolean flag to specify if repo_name refers to source
         :param statuses: list of pull request statuses
         :param opened_by: author user of the pull request
         :param user_id: reviewer user of the pull request
         :returns: int number of pull requests
         """
         pull_requests = self.get_awaiting_my_review(
             repo_name, source=source, statuses=statuses, opened_by=opened_by,
             user_id=user_id)
 
         return len(pull_requests)
 
     def get_awaiting_my_review(self, repo_name, source=False, statuses=None,
                                opened_by=None, user_id=None, offset=0,
                                length=None, order_by=None, order_dir='desc'):
         """
         Get all pull requests for a specific repository that are awaiting
         review from a specific user.
 
         :param repo_name: target or source repo
         :param source: boolean flag to specify if repo_name refers to source
         :param statuses: list of pull request statuses
         :param opened_by: author user of the pull request
         :param user_id: reviewer user of the pull request
         :param offset: pagination offset
         :param length: length of returned list
         :param order_by: order of the returned list
         :param order_dir: 'asc' or 'desc' ordering direction
         :returns: list of pull requests
         """
         pull_requests = self.get_all(
             repo_name, source=source, statuses=statuses, opened_by=opened_by,
             order_by=order_by, order_dir=order_dir)
 
         _my = PullRequestModel().get_not_reviewed(user_id)
         my_participation = []
         for pr in pull_requests:
             if pr in _my:
                 my_participation.append(pr)
         _filtered_pull_requests = my_participation
         if length:
             return _filtered_pull_requests[offset:offset+length]
         else:
             return _filtered_pull_requests
 
     def get_not_reviewed(self, user_id):
         return [
             x.pull_request for x in PullRequestReviewers.query().filter(
                 PullRequestReviewers.user_id == user_id).all()
         ]
 
     def _prepare_participating_query(self, user_id=None, statuses=None,
                                      order_by=None, order_dir='desc'):
         q = PullRequest.query()
         if user_id:
             reviewers_subquery = Session().query(
                 PullRequestReviewers.pull_request_id).filter(
                 PullRequestReviewers.user_id == user_id).subquery()
             user_filter= or_(
                 PullRequest.user_id == user_id,
                 PullRequest.pull_request_id.in_(reviewers_subquery)
             )
             q = PullRequest.query().filter(user_filter)
 
         # closed,opened
         if statuses:
             q = q.filter(PullRequest.status.in_(statuses))
 
         if order_by:
             order_map = {
                 'name_raw': PullRequest.pull_request_id,
                 'title': PullRequest.title,
                 'updated_on_raw': PullRequest.updated_on,
                 'target_repo': PullRequest.target_repo_id
             }
             if order_dir == 'asc':
                 q = q.order_by(order_map[order_by].asc())
             else:
                 q = q.order_by(order_map[order_by].desc())
 
         return q
 
     def count_im_participating_in(self, user_id=None, statuses=None):
         q = self._prepare_participating_query(user_id, statuses=statuses)
         return q.count()
 
     def get_im_participating_in(
             self, user_id=None, statuses=None, offset=0,
             length=None, order_by=None, order_dir='desc'):
         """
         Get all Pull requests that i'm participating in, or i have opened
         """
 
         q = self._prepare_participating_query(
             user_id, statuses=statuses, order_by=order_by,
             order_dir=order_dir)
 
         if length:
             pull_requests = q.limit(length).offset(offset).all()
         else:
             pull_requests = q.all()
 
         return pull_requests
 
     def get_versions(self, pull_request):
         """
         returns version of pull request sorted by ID descending
         """
         return PullRequestVersion.query()\
             .filter(PullRequestVersion.pull_request == pull_request)\
             .order_by(PullRequestVersion.pull_request_version_id.asc())\
             .all()
 
     def create(self, created_by, source_repo, source_ref, target_repo,
         target_ref, revisions, reviewers, title, description=None):
         created_by_user = self._get_user(created_by)
         source_repo = self._get_repo(source_repo)
         target_repo = self._get_repo(target_repo)
 
         pull_request = PullRequest()
         pull_request.source_repo = source_repo
         pull_request.source_ref = source_ref
         pull_request.target_repo = target_repo
         pull_request.target_ref = target_ref
         pull_request.revisions = revisions
         pull_request.title = title
         pull_request.description = description
         pull_request.author = created_by_user
 
         Session().add(pull_request)
         Session().flush()
 
         reviewer_ids = set()
         # members / reviewers
         for reviewer_object in reviewers:
             if isinstance(reviewer_object, tuple):
                 user_id, reasons = reviewer_object
             else:
                 user_id, reasons = reviewer_object, []
 
             user = self._get_user(user_id)
             reviewer_ids.add(user.user_id)
 
             reviewer = PullRequestReviewers(user, pull_request, reasons)
             Session().add(reviewer)
 
         # Set approval status to "Under Review" for all commits which are
         # part of this pull request.
         ChangesetStatusModel().set_status(
             repo=target_repo,
             status=ChangesetStatus.STATUS_UNDER_REVIEW,
             user=created_by_user,
             pull_request=pull_request
         )
 
         self.notify_reviewers(pull_request, reviewer_ids)
         self._trigger_pull_request_hook(
             pull_request, created_by_user, 'create')
 
         return pull_request
 
     def _trigger_pull_request_hook(self, pull_request, user, action):
         pull_request = self.__get_pull_request(pull_request)
         target_scm = pull_request.target_repo.scm_instance()
         if action == 'create':
             trigger_hook = hooks_utils.trigger_log_create_pull_request_hook
         elif action == 'merge':
             trigger_hook = hooks_utils.trigger_log_merge_pull_request_hook
         elif action == 'close':
             trigger_hook = hooks_utils.trigger_log_close_pull_request_hook
         elif action == 'review_status_change':
             trigger_hook = hooks_utils.trigger_log_review_pull_request_hook
         elif action == 'update':
             trigger_hook = hooks_utils.trigger_log_update_pull_request_hook
         else:
             return
 
         trigger_hook(
             username=user.username,
             repo_name=pull_request.target_repo.repo_name,
             repo_alias=target_scm.alias,
             pull_request=pull_request)
 
     def _get_commit_ids(self, pull_request):
         """
         Return the commit ids of the merged pull request.
 
         This method is not dealing correctly yet with the lack of autoupdates
         nor with the implicit target updates.
         For example: if a commit in the source repo is already in the target it
         will be reported anyways.
         """
         merge_rev = pull_request.merge_rev
         if merge_rev is None:
             raise ValueError('This pull request was not merged yet')
 
         commit_ids = list(pull_request.revisions)
         if merge_rev not in commit_ids:
             commit_ids.append(merge_rev)
 
         return commit_ids
 
     def merge(self, pull_request, user, extras):
         log.debug("Merging pull request %s", pull_request.pull_request_id)
         merge_state = self._merge_pull_request(pull_request, user, extras)
         if merge_state.executed:
             log.debug(
                 "Merge was successful, updating the pull request comments.")
             self._comment_and_close_pr(pull_request, user, merge_state)
             self._log_action('user_merged_pull_request', user, pull_request)
         else:
             log.warn("Merge failed, not updating the pull request.")
         return merge_state
 
     def _merge_pull_request(self, pull_request, user, extras):
         target_vcs = pull_request.target_repo.scm_instance()
         source_vcs = pull_request.source_repo.scm_instance()
         target_ref = self._refresh_reference(
             pull_request.target_ref_parts, target_vcs)
 
         message = _(
             'Merge pull request #%(pr_id)s from '
             '%(source_repo)s %(source_ref_name)s\n\n %(pr_title)s') % {
                 'pr_id': pull_request.pull_request_id,
                 'source_repo': source_vcs.name,
                 'source_ref_name': pull_request.source_ref_parts.name,
                 'pr_title': pull_request.title
             }
 
         workspace_id = self._workspace_id(pull_request)
         use_rebase = self._use_rebase_for_merging(pull_request)
 
         callback_daemon, extras = prepare_callback_daemon(
             extras, protocol=vcs_settings.HOOKS_PROTOCOL,
             use_direct_calls=vcs_settings.HOOKS_DIRECT_CALLS)
 
         with callback_daemon:
             # TODO: johbo: Implement a clean way to run a config_override
             # for a single call.
             target_vcs.config.set(
                 'rhodecode', 'RC_SCM_DATA', json.dumps(extras))
             merge_state = target_vcs.merge(
                 target_ref, source_vcs, pull_request.source_ref_parts,
                 workspace_id, user_name=user.username,
                 user_email=user.email, message=message, use_rebase=use_rebase)
         return merge_state
 
     def _comment_and_close_pr(self, pull_request, user, merge_state):
         pull_request.merge_rev = merge_state.merge_ref.commit_id
         pull_request.updated_on = datetime.datetime.now()
 
         CommentsModel().create(
             text=unicode(_('Pull request merged and closed')),
             repo=pull_request.target_repo.repo_id,
             user=user.user_id,
             pull_request=pull_request.pull_request_id,
             f_path=None,
             line_no=None,
             closing_pr=True
         )
 
         Session().add(pull_request)
         Session().flush()
         # TODO: paris: replace invalidation with less radical solution
         ScmModel().mark_for_invalidation(
             pull_request.target_repo.repo_name)
         self._trigger_pull_request_hook(pull_request, user, 'merge')
 
     def has_valid_update_type(self, pull_request):
         source_ref_type = pull_request.source_ref_parts.type
         return source_ref_type in ['book', 'branch', 'tag']
 
     def update_commits(self, pull_request):
         """
         Get the updated list of commits for the pull request
         and return the new pull request version and the list
         of commits processed by this update action
         """
         pull_request = self.__get_pull_request(pull_request)
         source_ref_type = pull_request.source_ref_parts.type
         source_ref_name = pull_request.source_ref_parts.name
         source_ref_id = pull_request.source_ref_parts.commit_id
 
         if not self.has_valid_update_type(pull_request):
             log.debug(
                 "Skipping update of pull request %s due to ref type: %s",
                 pull_request, source_ref_type)
             return UpdateResponse(
                 executed=False,
                 reason=UpdateFailureReason.WRONG_REF_TPYE,
                 old=pull_request, new=None, changes=None)
 
         source_repo = pull_request.source_repo.scm_instance()
         try:
             source_commit = source_repo.get_commit(commit_id=source_ref_name)
         except CommitDoesNotExistError:
             return UpdateResponse(
                 executed=False,
                 reason=UpdateFailureReason.MISSING_SOURCE_REF,
                 old=pull_request, new=None, changes=None)
 
         if source_ref_id == source_commit.raw_id:
             log.debug("Nothing changed in pull request %s", pull_request)
             return UpdateResponse(
                 executed=False,
                 reason=UpdateFailureReason.NO_CHANGE,
                 old=pull_request, new=None, changes=None)
 
         # Finally there is a need for an update
         pull_request_version = self._create_version_from_snapshot(pull_request)
         self._link_comments_to_version(pull_request_version)
 
         target_ref_type = pull_request.target_ref_parts.type
         target_ref_name = pull_request.target_ref_parts.name
         target_ref_id = pull_request.target_ref_parts.commit_id
         target_repo = pull_request.target_repo.scm_instance()
 
         try:
             if target_ref_type in ('tag', 'branch', 'book'):
                 target_commit = target_repo.get_commit(target_ref_name)
             else:
                 target_commit = target_repo.get_commit(target_ref_id)
         except CommitDoesNotExistError:
             return UpdateResponse(
                 executed=False,
                 reason=UpdateFailureReason.MISSING_TARGET_REF,
                 old=pull_request, new=None, changes=None)
 
         # re-compute commit ids
         old_commit_ids = set(pull_request.revisions)
         pre_load = ["author", "branch", "date", "message"]
         commit_ranges = target_repo.compare(
             target_commit.raw_id, source_commit.raw_id, source_repo, merge=True,
             pre_load=pre_load)
 
         ancestor = target_repo.get_common_ancestor(
             target_commit.raw_id, source_commit.raw_id, source_repo)
 
         pull_request.source_ref = '%s:%s:%s' % (
             source_ref_type, source_ref_name, source_commit.raw_id)
         pull_request.target_ref = '%s:%s:%s' % (
             target_ref_type, target_ref_name, ancestor)
         pull_request.revisions = [
             commit.raw_id for commit in reversed(commit_ranges)]
         pull_request.updated_on = datetime.datetime.now()
         Session().add(pull_request)
         new_commit_ids = set(pull_request.revisions)
 
         changes = self._calculate_commit_id_changes(
             old_commit_ids, new_commit_ids)
 
         old_diff_data, new_diff_data = self._generate_update_diffs(
             pull_request, pull_request_version)
 
         CommentsModel().outdate_comments(
             pull_request, old_diff_data=old_diff_data,
             new_diff_data=new_diff_data)
 
         file_changes = self._calculate_file_changes(
             old_diff_data, new_diff_data)
 
         # Add an automatic comment to the pull request
         update_comment = CommentsModel().create(
             text=self._render_update_message(changes, file_changes),
             repo=pull_request.target_repo,
             user=pull_request.author,
             pull_request=pull_request,
             send_email=False, renderer=DEFAULT_COMMENTS_RENDERER)
 
         # Update status to "Under Review" for added commits
         for commit_id in changes.added:
             ChangesetStatusModel().set_status(
                 repo=pull_request.source_repo,
                 status=ChangesetStatus.STATUS_UNDER_REVIEW,
                 comment=update_comment,
                 user=pull_request.author,
                 pull_request=pull_request,
                 revision=commit_id)
 
         log.debug(
             'Updated pull request %s, added_ids: %s, common_ids: %s, '
             'removed_ids: %s', pull_request.pull_request_id,
             changes.added, changes.common, changes.removed)
         log.debug('Updated pull request with the following file changes: %s',
                   file_changes)
 
         log.info(
             "Updated pull request %s from commit %s to commit %s, "
             "stored new version %s of this pull request.",
             pull_request.pull_request_id, source_ref_id,
             pull_request.source_ref_parts.commit_id,
             pull_request_version.pull_request_version_id)
         Session().commit()
         self._trigger_pull_request_hook(pull_request, pull_request.author,
                                         'update')
 
         return UpdateResponse(
             executed=True, reason=UpdateFailureReason.NONE,
             old=pull_request, new=pull_request_version, changes=changes)
 
     def _create_version_from_snapshot(self, pull_request):
         version = PullRequestVersion()
         version.title = pull_request.title
         version.description = pull_request.description
         version.status = pull_request.status
         version.created_on = datetime.datetime.now()
         version.updated_on = pull_request.updated_on
         version.user_id = pull_request.user_id
         version.source_repo = pull_request.source_repo
         version.source_ref = pull_request.source_ref
         version.target_repo = pull_request.target_repo
         version.target_ref = pull_request.target_ref
 
         version._last_merge_source_rev = pull_request._last_merge_source_rev
         version._last_merge_target_rev = pull_request._last_merge_target_rev
         version._last_merge_status = pull_request._last_merge_status
         version.shadow_merge_ref = pull_request.shadow_merge_ref
         version.merge_rev = pull_request.merge_rev
 
         version.revisions = pull_request.revisions
         version.pull_request = pull_request
         Session().add(version)
         Session().flush()
 
         return version
 
     def _generate_update_diffs(self, pull_request, pull_request_version):
         diff_context = (
             self.DIFF_CONTEXT +
             CommentsModel.needed_extra_diff_context())
         old_diff = self._get_diff_from_pr_or_version(
             pull_request_version, context=diff_context)
         new_diff = self._get_diff_from_pr_or_version(
             pull_request, context=diff_context)
 
         old_diff_data = diffs.DiffProcessor(old_diff)
         old_diff_data.prepare()
         new_diff_data = diffs.DiffProcessor(new_diff)
         new_diff_data.prepare()
 
         return old_diff_data, new_diff_data
 
     def _link_comments_to_version(self, pull_request_version):
         """
         Link all unlinked comments of this pull request to the given version.
 
         :param pull_request_version: The `PullRequestVersion` to which
             the comments shall be linked.
 
         """
         pull_request = pull_request_version.pull_request
         comments = ChangesetComment.query().filter(
             # TODO: johbo: Should we query for the repo at all here?
             # Pending decision on how comments of PRs are to be related
             # to either the source repo, the target repo or no repo at all.
             ChangesetComment.repo_id == pull_request.target_repo.repo_id,
             ChangesetComment.pull_request == pull_request,
             ChangesetComment.pull_request_version == None)
 
         # TODO: johbo: Find out why this breaks if it is done in a bulk
         # operation.
         for comment in comments:
             comment.pull_request_version_id = (
                 pull_request_version.pull_request_version_id)
             Session().add(comment)
 
     def _calculate_commit_id_changes(self, old_ids, new_ids):
         added = new_ids.difference(old_ids)
         common = old_ids.intersection(new_ids)
         removed = old_ids.difference(new_ids)
         return ChangeTuple(added, common, removed)
 
     def _calculate_file_changes(self, old_diff_data, new_diff_data):
 
         old_files = OrderedDict()
         for diff_data in old_diff_data.parsed_diff:
             old_files[diff_data['filename']] = md5_safe(diff_data['raw_diff'])
 
         added_files = []
         modified_files = []
         removed_files = []
         for diff_data in new_diff_data.parsed_diff:
             new_filename = diff_data['filename']
             new_hash = md5_safe(diff_data['raw_diff'])
 
             old_hash = old_files.get(new_filename)
             if not old_hash:
                 # file is not present in old diff, means it's added
                 added_files.append(new_filename)
             else:
                 if new_hash != old_hash:
                     modified_files.append(new_filename)
                 # now remove a file from old, since we have seen it already
                 del old_files[new_filename]
 
         # removed files is when there are present in old, but not in NEW,
         # since we remove old files that are present in new diff, left-overs
         # if any should be the removed files
         removed_files.extend(old_files.keys())
 
         return FileChangeTuple(added_files, modified_files, removed_files)
 
     def _render_update_message(self, changes, file_changes):
         """
         render the message using DEFAULT_COMMENTS_RENDERER (RST renderer),
         so it's always looking the same disregarding on which default
         renderer system is using.
 
         :param changes: changes named tuple
         :param file_changes: file changes named tuple
 
         """
         new_status = ChangesetStatus.get_status_lbl(
             ChangesetStatus.STATUS_UNDER_REVIEW)
 
         changed_files = (
             file_changes.added + file_changes.modified + file_changes.removed)
 
         params = {
             'under_review_label': new_status,
             'added_commits': changes.added,
             'removed_commits': changes.removed,
             'changed_files': changed_files,
             'added_files': file_changes.added,
             'modified_files': file_changes.modified,
             'removed_files': file_changes.removed,
         }
         renderer = RstTemplateRenderer()
         return renderer.render('pull_request_update.mako', **params)
 
     def edit(self, pull_request, title, description):
         pull_request = self.__get_pull_request(pull_request)
         if pull_request.is_closed():
             raise ValueError('This pull request is closed')
         if title:
             pull_request.title = title
         pull_request.description = description
         pull_request.updated_on = datetime.datetime.now()
         Session().add(pull_request)
 
     def update_reviewers(self, pull_request, reviewer_data):
         """
         Update the reviewers in the pull request
 
         :param pull_request: the pr to update
         :param reviewer_data: list of tuples [(user, ['reason1', 'reason2'])]
         """
 
         reviewers_reasons = {}
         for user_id, reasons in reviewer_data:
             if isinstance(user_id, (int, basestring)):
                 user_id = self._get_user(user_id).user_id
             reviewers_reasons[user_id] = reasons
 
         reviewers_ids = set(reviewers_reasons.keys())
         pull_request = self.__get_pull_request(pull_request)
         current_reviewers = PullRequestReviewers.query()\
             .filter(PullRequestReviewers.pull_request ==
                     pull_request).all()
         current_reviewers_ids = set([x.user.user_id for x in current_reviewers])
 
         ids_to_add = reviewers_ids.difference(current_reviewers_ids)
         ids_to_remove = current_reviewers_ids.difference(reviewers_ids)
 
         log.debug("Adding %s reviewers", ids_to_add)
         log.debug("Removing %s reviewers", ids_to_remove)
         changed = False
         for uid in ids_to_add:
             changed = True
             _usr = self._get_user(uid)
             reasons = reviewers_reasons[uid]
             reviewer = PullRequestReviewers(_usr, pull_request, reasons)
             Session().add(reviewer)
 
         self.notify_reviewers(pull_request, ids_to_add)
 
         for uid in ids_to_remove:
             changed = True
             reviewer = PullRequestReviewers.query()\
                 .filter(PullRequestReviewers.user_id == uid,
                         PullRequestReviewers.pull_request == pull_request)\
                 .scalar()
             if reviewer:
                 Session().delete(reviewer)
         if changed:
             pull_request.updated_on = datetime.datetime.now()
             Session().add(pull_request)
 
         return ids_to_add, ids_to_remove
 
     def get_url(self, pull_request):
         return h.url('pullrequest_show',
                      repo_name=safe_str(pull_request.target_repo.repo_name),
                      pull_request_id=pull_request.pull_request_id,
                      qualified=True)
 
     def get_shadow_clone_url(self, pull_request):
         """
         Returns qualified url pointing to the shadow repository. If this pull
         request is closed there is no shadow repository and ``None`` will be
         returned.
         """
         if pull_request.is_closed():
             return None
         else:
             pr_url = urllib.unquote(self.get_url(pull_request))
             return safe_unicode('{pr_url}/repository'.format(pr_url=pr_url))
 
     def notify_reviewers(self, pull_request, reviewers_ids):
         # notification to reviewers
         if not reviewers_ids:
             return
 
         pull_request_obj = pull_request
         # get the current participants of this pull request
         recipients = reviewers_ids
         notification_type = EmailNotificationModel.TYPE_PULL_REQUEST
 
         pr_source_repo = pull_request_obj.source_repo
         pr_target_repo = pull_request_obj.target_repo
 
         pr_url = h.url(
             'pullrequest_show',
             repo_name=pr_target_repo.repo_name,
             pull_request_id=pull_request_obj.pull_request_id,
             qualified=True,)
 
         # set some variables for email notification
         pr_target_repo_url = h.url(
             'summary_home',
             repo_name=pr_target_repo.repo_name,
             qualified=True)
 
         pr_source_repo_url = h.url(
             'summary_home',
             repo_name=pr_source_repo.repo_name,
             qualified=True)
 
         # pull request specifics
         pull_request_commits = [
             (x.raw_id, x.message)
             for x in map(pr_source_repo.get_commit, pull_request.revisions)]
 
         kwargs = {
             'user': pull_request.author,
             'pull_request': pull_request_obj,
             'pull_request_commits': pull_request_commits,
 
             'pull_request_target_repo': pr_target_repo,
             'pull_request_target_repo_url': pr_target_repo_url,
 
             'pull_request_source_repo': pr_source_repo,
             'pull_request_source_repo_url': pr_source_repo_url,
 
             'pull_request_url': pr_url,
         }
 
         # pre-generate the subject for notification itself
         (subject,
          _h, _e,  # we don't care about those
          body_plaintext) = EmailNotificationModel().render_email(
             notification_type, **kwargs)
 
         # create notification objects, and emails
         NotificationModel().create(
             created_by=pull_request.author,
             notification_subject=subject,
             notification_body=body_plaintext,
             notification_type=notification_type,
             recipients=recipients,
             email_kwargs=kwargs,
         )
 
     def delete(self, pull_request):
         pull_request = self.__get_pull_request(pull_request)
         self._cleanup_merge_workspace(pull_request)
         Session().delete(pull_request)
 
     def close_pull_request(self, pull_request, user):
         pull_request = self.__get_pull_request(pull_request)
         self._cleanup_merge_workspace(pull_request)
         pull_request.status = PullRequest.STATUS_CLOSED
         pull_request.updated_on = datetime.datetime.now()
         Session().add(pull_request)
         self._trigger_pull_request_hook(
             pull_request, pull_request.author, 'close')
         self._log_action('user_closed_pull_request', user, pull_request)
 
     def close_pull_request_with_comment(self, pull_request, user, repo,
                                         message=None):
         status = ChangesetStatus.STATUS_REJECTED
 
         if not message:
             message = (
                 _('Status change %(transition_icon)s %(status)s') % {
                     'transition_icon': '>',
                     'status': ChangesetStatus.get_status_lbl(status)})
 
         internal_message = _('Closing with') + ' ' + message
 
         comm = CommentsModel().create(
             text=internal_message,
             repo=repo.repo_id,
             user=user.user_id,
             pull_request=pull_request.pull_request_id,
             f_path=None,
             line_no=None,
             status_change=ChangesetStatus.get_status_lbl(status),
             status_change_type=status,
             closing_pr=True
         )
 
         ChangesetStatusModel().set_status(
             repo.repo_id,
             status,
             user.user_id,
             comm,
             pull_request=pull_request.pull_request_id
         )
         Session().flush()
 
         PullRequestModel().close_pull_request(
             pull_request.pull_request_id, user)
 
     def merge_status(self, pull_request):
         if not self._is_merge_enabled(pull_request):
             return False, _('Server-side pull request merging is disabled.')
         if pull_request.is_closed():
             return False, _('This pull request is closed.')
         merge_possible, msg = self._check_repo_requirements(
             target=pull_request.target_repo, source=pull_request.source_repo)
         if not merge_possible:
             return merge_possible, msg
 
         try:
             resp = self._try_merge(pull_request)
             log.debug("Merge response: %s", resp)
             status = resp.possible, self.merge_status_message(
                 resp.failure_reason)
         except NotImplementedError:
             status = False, _('Pull request merging is not supported.')
 
         return status
 
     def _check_repo_requirements(self, target, source):
         """
         Check if `target` and `source` have compatible requirements.
 
         Currently this is just checking for largefiles.
         """
         target_has_largefiles = self._has_largefiles(target)
         source_has_largefiles = self._has_largefiles(source)
         merge_possible = True
         message = u''
 
         if target_has_largefiles != source_has_largefiles:
             merge_possible = False
             if source_has_largefiles:
                 message = _(
                     'Target repository large files support is disabled.')
             else:
                 message = _(
                     'Source repository large files support is disabled.')
 
         return merge_possible, message
 
     def _has_largefiles(self, repo):
         largefiles_ui = VcsSettingsModel(repo=repo).get_ui_settings(
             'extensions', 'largefiles')
         return largefiles_ui and largefiles_ui[0].active
 
     def _try_merge(self, pull_request):
         """
         Try to merge the pull request and return the merge status.
         """
         log.debug(
             "Trying out if the pull request %s can be merged.",
             pull_request.pull_request_id)
         target_vcs = pull_request.target_repo.scm_instance()
 
         # Refresh the target reference.
         try:
             target_ref = self._refresh_reference(
                 pull_request.target_ref_parts, target_vcs)
         except CommitDoesNotExistError:
             merge_state = MergeResponse(
                 False, False, None, MergeFailureReason.MISSING_TARGET_REF)
             return merge_state
 
         target_locked = pull_request.target_repo.locked
         if target_locked and target_locked[0]:
             log.debug("The target repository is locked.")
             merge_state = MergeResponse(
                 False, False, None, MergeFailureReason.TARGET_IS_LOCKED)
         elif self._needs_merge_state_refresh(pull_request, target_ref):
             log.debug("Refreshing the merge status of the repository.")
             merge_state = self._refresh_merge_state(
                 pull_request, target_vcs, target_ref)
         else:
             possible = pull_request.\
                 _last_merge_status == MergeFailureReason.NONE
             merge_state = MergeResponse(
                 possible, False, None, pull_request._last_merge_status)
 
         return merge_state
 
     def _refresh_reference(self, reference, vcs_repository):
         if reference.type in ('branch', 'book'):
             name_or_id = reference.name
         else:
             name_or_id = reference.commit_id
         refreshed_commit = vcs_repository.get_commit(name_or_id)
         refreshed_reference = Reference(
             reference.type, reference.name, refreshed_commit.raw_id)
         return refreshed_reference
 
     def _needs_merge_state_refresh(self, pull_request, target_reference):
         return not(
             pull_request.revisions and
             pull_request.revisions[0] == pull_request._last_merge_source_rev and
             target_reference.commit_id == pull_request._last_merge_target_rev)
 
     def _refresh_merge_state(self, pull_request, target_vcs, target_reference):
         workspace_id = self._workspace_id(pull_request)
         source_vcs = pull_request.source_repo.scm_instance()
         use_rebase = self._use_rebase_for_merging(pull_request)
         merge_state = target_vcs.merge(
             target_reference, source_vcs, pull_request.source_ref_parts,
             workspace_id, dry_run=True, use_rebase=use_rebase)
 
         # Do not store the response if there was an unknown error.
         if merge_state.failure_reason != MergeFailureReason.UNKNOWN:
             pull_request._last_merge_source_rev = \
                 pull_request.source_ref_parts.commit_id
             pull_request._last_merge_target_rev = target_reference.commit_id
             pull_request._last_merge_status = merge_state.failure_reason
             pull_request.shadow_merge_ref = merge_state.merge_ref
             Session().add(pull_request)
             Session().commit()
 
         return merge_state
 
     def _workspace_id(self, pull_request):
         workspace_id = 'pr-%s' % pull_request.pull_request_id
         return workspace_id
 
     def merge_status_message(self, status_code):
         """
         Return a human friendly error message for the given merge status code.
         """
         return self.MERGE_STATUS_MESSAGES[status_code]
 
     def generate_repo_data(self, repo, commit_id=None, branch=None,
                            bookmark=None):
         all_refs, selected_ref = \
             self._get_repo_pullrequest_sources(
                 repo.scm_instance(), commit_id=commit_id,
                 branch=branch, bookmark=bookmark)
 
         refs_select2 = []
         for element in all_refs:
             children = [{'id': x[0], 'text': x[1]} for x in element[0]]
             refs_select2.append({'text': element[1], 'children': children})
 
         return {
             'user': {
                 'user_id': repo.user.user_id,
                 'username': repo.user.username,
                 'firstname': repo.user.firstname,
                 'lastname': repo.user.lastname,
                 'gravatar_link': h.gravatar_url(repo.user.email, 14),
             },
             'description': h.chop_at_smart(repo.description, '\n'),
             'refs': {
                 'all_refs': all_refs,
                 'selected_ref': selected_ref,
                 'select2_refs': refs_select2
             }
         }
 
     def generate_pullrequest_title(self, source, source_ref, target):
         return u'{source}#{at_ref} to {target}'.format(
             source=source,
             at_ref=source_ref,
             target=target,
         )
 
     def _cleanup_merge_workspace(self, pull_request):
         # Merging related cleanup
         target_scm = pull_request.target_repo.scm_instance()
         workspace_id = 'pr-%s' % pull_request.pull_request_id
 
         try:
             target_scm.cleanup_merge_workspace(workspace_id)
         except NotImplementedError:
             pass
 
     def _get_repo_pullrequest_sources(
             self, repo, commit_id=None, branch=None, bookmark=None):
         """
         Return a structure with repo's interesting commits, suitable for
         the selectors in pullrequest controller
 
         :param commit_id: a commit that must be in the list somehow
             and selected by default
         :param branch: a branch that must be in the list and selected
             by default - even if closed
         :param bookmark: a bookmark that must be in the list and selected
         """
 
         commit_id = safe_str(commit_id) if commit_id else None
         branch = safe_str(branch) if branch else None
         bookmark = safe_str(bookmark) if bookmark else None
 
         selected = None
 
         # order matters: first source that has commit_id in it will be selected
         sources = []
         sources.append(('book', repo.bookmarks.items(), _('Bookmarks'), bookmark))
         sources.append(('branch', repo.branches.items(), _('Branches'), branch))
 
         if commit_id:
             ref_commit = (h.short_id(commit_id), commit_id)
             sources.append(('rev', [ref_commit], _('Commit IDs'), commit_id))
 
         sources.append(
             ('branch', repo.branches_closed.items(), _('Closed Branches'), branch),
         )
 
         groups = []
         for group_key, ref_list, group_name, match in sources:
             group_refs = []
             for ref_name, ref_id in ref_list:
                 ref_key = '%s:%s:%s' % (group_key, ref_name, ref_id)
                 group_refs.append((ref_key, ref_name))
 
                 if not selected:
                     if set([commit_id, match]) & set([ref_id, ref_name]):
                         selected = ref_key
 
             if group_refs:
                 groups.append((group_refs, group_name))
 
         if not selected:
             ref = commit_id or branch or bookmark
             if ref:
                 raise CommitDoesNotExistError(
                     'No commit refs could be found matching: %s' % ref)
             elif repo.DEFAULT_BRANCH_NAME in repo.branches:
                 selected = 'branch:%s:%s' % (
                     repo.DEFAULT_BRANCH_NAME,
                     repo.branches[repo.DEFAULT_BRANCH_NAME]
                 )
             elif repo.commit_ids:
                 rev = repo.commit_ids[0]
                 selected = 'rev:%s:%s' % (rev, rev)
             else:
                 raise EmptyRepositoryError()
         return groups, selected
 
     def get_diff(self, pull_request, context=DIFF_CONTEXT):
         pull_request = self.__get_pull_request(pull_request)
         return self._get_diff_from_pr_or_version(pull_request, context=context)
 
     def _get_diff_from_pr_or_version(self, pr_or_version, context):
         source_repo = pr_or_version.source_repo
 
         # we swap org/other ref since we run a simple diff on one repo
         target_ref_id = pr_or_version.target_ref_parts.commit_id
         source_ref_id = pr_or_version.source_ref_parts.commit_id
         target_commit = source_repo.get_commit(
             commit_id=safe_str(target_ref_id))
         source_commit = source_repo.get_commit(commit_id=safe_str(source_ref_id))
         vcs_repo = source_repo.scm_instance()
 
         # TODO: johbo: In the context of an update, we cannot reach
         # the old commit anymore with our normal mechanisms. It needs
         # some sort of special support in the vcs layer to avoid this
         # workaround.
         if (source_commit.raw_id == vcs_repo.EMPTY_COMMIT_ID and
                 vcs_repo.alias == 'git'):
             source_commit.raw_id = safe_str(source_ref_id)
 
         log.debug('calculating diff between '
                   'source_ref:%s and target_ref:%s for repo `%s`',
                   target_ref_id, source_ref_id,
                   safe_unicode(vcs_repo.path))
 
         vcs_diff = vcs_repo.get_diff(
             commit1=target_commit, commit2=source_commit, context=context)
         return vcs_diff
 
     def _is_merge_enabled(self, pull_request):
         settings_model = VcsSettingsModel(repo=pull_request.target_repo)
         settings = settings_model.get_general_settings()
         return settings.get('rhodecode_pr_merge_enabled', False)
 
     def _use_rebase_for_merging(self, pull_request):
         settings_model = VcsSettingsModel(repo=pull_request.target_repo)
         settings = settings_model.get_general_settings()
         return settings.get('rhodecode_hg_use_rebase_for_merging', False)
 
     def _log_action(self, action, user, pull_request):
         action_logger(
             user,
             '{action}:{pr_id}'.format(
                 action=action, pr_id=pull_request.pull_request_id),
             pull_request.target_repo)
 
 
+class MergeCheck(object):
+    """
+    Perform Merge Checks and returns a check object which stores information
+    about merge errors, and merge conditions
+    """
+
+    def __init__(self):
+        self.merge_possible = None
+        self.merge_msg = ''
+        self.failed = None
+        self.errors = []
+
+    def push_error(self, error_type, message):
+        self.failed = True
+        self.errors.append([error_type, message])
+
+    @classmethod
+    def validate(cls, pull_request, user, fail_early=False, translator=None):
+        # if migrated to pyramid...
+        # _ = lambda: translator or _  # use passed in translator if any
+
+        merge_check = cls()
+
+        # permissions
+        user_allowed_to_merge = PullRequestModel().check_user_merge(
+            pull_request, user)
+        if not user_allowed_to_merge:
+            log.debug("MergeCheck: cannot merge, approval is pending.")
+
+            msg = _('User `{}` not allowed to perform merge').format(user)
+            merge_check.push_error('error', msg)
+            if fail_early:
+                return merge_check
+
+        # review status
+        review_status = pull_request.calculated_review_status()
+        status_approved = review_status == ChangesetStatus.STATUS_APPROVED
+        if not status_approved:
+            log.debug("MergeCheck: cannot merge, approval is pending.")
+
+            msg = _('Pull request reviewer approval is pending.')
+
+            merge_check.push_error('warning', msg)
+
+            if fail_early:
+                return merge_check
+
+        # left over TODOs
+        todos = CommentsModel().get_unresolved_todos(pull_request)
+        if todos:
+            log.debug("MergeCheck: cannot merge, {} "
+                      "unresolved todos left.".format(len(todos)))
+
+            if len(todos) == 1:
+                msg = _('Cannot merge, {} TODO still not resolved.').format(
+                    len(todos))
+            else:
+                msg = _('Cannot merge, {} TODOs still not resolved.').format(
+                    len(todos))
+
+            merge_check.push_error('warning', msg)
+
+            if fail_early:
+                return merge_check
+
+        # merge possible
+        merge_status, msg = PullRequestModel().merge_status(pull_request)
+        merge_check.merge_possible = merge_status
+        merge_check.merge_msg = msg
+        if not merge_status:
+            log.debug(
+                "MergeCheck: cannot merge, pull request merge not possible.")
+            merge_check.push_error('warning', msg)
+
+            if fail_early:
+                return merge_check
+
+        return merge_check
+
+
 ChangeTuple = namedtuple('ChangeTuple',
                          ['added', 'common', 'removed'])
 
 FileChangeTuple = namedtuple('FileChangeTuple',
                              ['added', 'modified', 'removed'])

rhodecode/public/css/main.less

@@ -1,2257 +1,2261 b''
 //Primary CSS
 
 //--- IMPORTS ------------------//
 
 @import 'helpers';
 @import 'mixins';
 @import 'rcicons';
 @import 'fonts';
 @import 'variables';
 @import 'bootstrap-variables';
 @import 'form-bootstrap';
 @import 'codemirror';
 @import 'legacy_code_styles';
 @import 'progress-bar';
 
 @import 'type';
 @import 'alerts';
 @import 'buttons';
 @import 'tags';
 @import 'code-block';
 @import 'examples';
 @import 'login';
 @import 'main-content';
 @import 'select2';
 @import 'comments';
 @import 'panels-bootstrap';
 @import 'panels';
 @import 'deform';
 
 //--- BASE ------------------//
 .noscript-error {
     top: 0;
     left: 0;
     width: 100%;
     z-index: 101;
     text-align: center;
     font-family: @text-semibold;
     font-size: 120%;
     color: white;
     background-color: @alert2;
     padding: 5px 0 5px 0;
 }
 
 html {
     display: table;
     height: 100%;
     width: 100%;
 }
 
 body {
     display: table-cell;
     width: 100%;
 }
 
 //--- LAYOUT ------------------//
 
 .hidden{
 	display: none !important;
 }
 
 .box{
 	float: left;
 	width: 100%;
 }
 
 .browser-header {
     clear: both;
 }
 .main {
   clear: both;
   padding:0 0 @pagepadding;
   height: auto;
 
 	&:after { //clearfix
 		content:"";
 		clear:both;
 		width:100%;
 		display:block;
 	}
 }
 
 .action-link{
 	margin-left: @padding;
 	padding-left: @padding;
 	border-left: @border-thickness solid @border-default-color;
 }
 
 input + .action-link, .action-link.first{
 	border-left: none;
 }
 
 .action-link.last{
 	margin-right: @padding;
 	padding-right: @padding;
 }
 
 .action-link.active,
 .action-link.active a{
 	color: @grey4;
 }
 
 ul.simple-list{
 	list-style: none;
 	margin: 0;
 	padding: 0;
 }
 
 .main-content {
 	padding-bottom: @pagepadding;
 }
 
 .wide-mode-wrapper {
     max-width:4000px !important;
 }
 
 .wrapper {
 	position: relative;
 	max-width: @wrapper-maxwidth;
 	margin: 0 auto;
 }
 
 #content {
     clear: both;
     padding: 0 @contentpadding;
 }
 
 .advanced-settings-fields{
 	input{
 		margin-left: @textmargin;
 		margin-right: @padding/2;
 	}
 }
 
 .cs_files_title {
     margin: @pagepadding 0 0;
 }
 
 input.inline[type="file"] {
 	display: inline;
 }
 
 .error_page {
     margin: 10% auto;
 
     h1 {
         color: @grey2;
     }
 
     .alert {
         margin: @padding 0;
     }
 
     .error-branding {
         font-family: @text-semibold;
         color: @grey4;
     }
 
     .error_message {
         font-family: @text-regular;
     }
 
     .sidebar {
         min-height: 275px;
         margin: 0;
         padding: 0 0 @sidebarpadding @sidebarpadding;
         border: none;
     }
 
     .main-content {
         position: relative;
         margin: 0 @sidebarpadding @sidebarpadding;
         padding: 0 0 0 @sidebarpadding;
         border-left: @border-thickness solid @grey5;
 
         @media (max-width:767px) {
             clear: both;
             width: 100%;
             margin: 0;
             border: none;
         }
     }
 
     .inner-column {
         float: left;
         width: 29.75%;
         min-height: 150px;
         margin: @sidebarpadding 2% 0 0;
         padding: 0 2% 0 0;
         border-right: @border-thickness solid @grey5;
 
         @media (max-width:767px) {
             clear: both;
             width: 100%;
             border: none;
         }
 
         ul {
             padding-left: 1.25em;
         }
 
         &:last-child {
             margin: @sidebarpadding 0 0;
             border: none;
         }
 
         h4 {
             margin: 0 0 @padding;
             font-family: @text-semibold;
         }
     }
 }
 .error-page-logo {
     width: 130px;
     height: 160px;
 }
 
 // HEADER
 .header {
 
     // TODO: johbo: Fix login pages, so that they work without a min-height
     // for the header and then remove the min-height. I chose a smaller value
     // intentionally here to avoid rendering issues in the main navigation.
     min-height: 49px;
 
 	position: relative;
 	vertical-align: bottom;
 	padding: 0 @header-padding;
 	background-color: @grey2;
 	color: @grey5;
 
 	.title {
 		overflow: visible;
 	}
 
 	&:before,
 	&:after {
 		content: "";
 		clear: both;
 		width: 100%;
 	}
 
 	// TODO: johbo: Avoids breaking "Repositories" chooser
 	.select2-container .select2-choice .select2-arrow {
 	    display: none;
 	}
 }
 
 #header-inner {
 	&.title {
 		margin: 0;
 	}
 	&:before,
 	&:after {
 		content: "";
 		clear: both;
 	}
 }
 
 // Gists
 #files_data {
     clear: both; //for firefox
 }
 #gistid {
     margin-right: @padding;
 }
 
 // Global Settings Editor
 .textarea.editor {
 	float: left;
 	position: relative;
 	max-width: @texteditor-width;
 
 	select {
 		position: absolute;
 		top:10px;
 		right:0;
 	}
 
 	.CodeMirror {
 		margin: 0;
 	}
 
 	.help-block {
 		margin: 0 0 @padding;
 		padding:.5em;
 		background-color: @grey6;
 	}
 }
 
 ul.auth_plugins {
 	margin: @padding 0 @padding @legend-width;
 	padding: 0;
 
 	li {
 		margin-bottom: @padding;
         line-height: 1em;
 		list-style-type: none;
 
 		.auth_buttons .btn {
 			margin-right: @padding;
 		}
 
         &:before { content: none; }
 	}
 }
 
 
 // My Account PR list
 
 #show_closed {
     margin: 0 1em 0 0;
 }
 
 .pullrequestlist {
     .closed {
         background-color: @grey6;
     }
     .td-status {
         padding-left: .5em;
     }
     .log-container .truncate {
         height: 2.75em;
         white-space: pre-line;
     }
     table.rctable .user {
         padding-left: 0;
     }
     table.rctable {
         td.td-description,
         .rc-user {
             min-width: auto;
         }
     }
 }
 
 // Pull Requests
 
 .pullrequests_section_head {
 	display: block;
 	clear: both;
 	margin: @padding 0;
 	font-family: @text-bold;
 }
 
 .pr-origininfo, .pr-targetinfo {
     position: relative;
 
     .tag {
         display: inline-block;
         margin: 0 1em .5em 0;
     }
 
     .clone-url {
         display: inline-block;
         margin: 0 0 .5em 0;
         padding: 0;
         line-height: 1.2em;
     }
 }
 
 .pr-pullinfo {
     clear: both;
     margin: .5em 0;
 }
 
 #pr-title-input {
     width: 72%;
     font-size: 1em;
     font-family: @text-bold;
     margin: 0;
     padding: 0 0 0 @padding/4;
     line-height: 1.7em;
     color: @text-color;
     letter-spacing: .02em;
 }
 
 #pullrequest_title {
     width: 100%;
     box-sizing: border-box;
 }
 
 #pr_open_message {
     border: @border-thickness solid #fff;
     border-radius: @border-radius;
     padding: @padding-large-vertical @padding-large-vertical @padding-large-vertical 0;
     text-align: right;
     overflow: hidden;
 }
 
 .pr-submit-button {
     float: right;
     margin: 0 0 0 5px;
 }
 
 .pr-spacing-container {
     padding: 20px;
     clear: both
 }
 
 #pr-description-input {
     margin-bottom: 0;
 }
 
 .pr-description-label {
     vertical-align: top;
 }
 
 .perms_section_head {
     min-width: 625px;
 
     h2 {
         margin-bottom: 0;
     }
 
     .label-checkbox {
         float: left;
     }
 
     &.field {
         margin: @space 0 @padding;
     }
 
     &:first-child.field {
         margin-top: 0;
 
         .label {
             margin-top: 0;
             padding-top: 0;
         }
 
         .radios {
             padding-top: 0;
         }
     }
 
     .radios {
 	   float: right;
         position: relative;
         width: 405px;
     }
 }
 
 //--- MODULES ------------------//
 
 
 // Server Announcement
 #server-announcement {
     width: 95%;
     margin: @padding auto;
     padding: @padding;
     border-width: 2px;
     border-style: solid;
     .border-radius(2px);
     font-family: @text-bold;
 
     &.info    { border-color: @alert4; background-color: @alert4-inner; }
     &.warning { border-color: @alert3; background-color: @alert3-inner; }
     &.error   { border-color: @alert2; background-color: @alert2-inner; }
     &.success { border-color: @alert1; background-color: @alert1-inner; }
     &.neutral { border-color: @grey3; background-color: @grey6; }
 }
 
 // Fixed Sidebar Column
 .sidebar-col-wrapper {
     padding-left: @sidebar-all-width;
 
     .sidebar {
         width: @sidebar-width;
         margin-left: -@sidebar-all-width;
     }
 }
 
 .sidebar-col-wrapper.scw-small {
     padding-left: @sidebar-small-all-width;
 
     .sidebar {
         width: @sidebar-small-width;
         margin-left: -@sidebar-small-all-width;
     }
 }
 
 
 // FOOTER
 #footer {
 	padding: 0;
 	text-align: center;
 	vertical-align: middle;
 	color: @grey2;
 	background-color: @grey6;
 
 	p {
 		margin: 0;
 		padding: 1em;
 		line-height: 1em;
 	}
 
 	.server-instance { //server instance
 		display: none;
 	}
 
 	.title {
 		float: none;
 		margin: 0 auto;
 	}
 }
 
 button.close {
 	padding: 0;
 	cursor: pointer;
 	background: transparent;
 	border: 0;
 	.box-shadow(none);
 	-webkit-appearance: none;
 }
 
 .close {
 	float: right;
 	font-size: 21px;
 	font-family: @text-bootstrap;
 	line-height: 1em;
 	font-weight: bold;
 	color: @grey2;
 
 	&:hover,
 	&:focus {
 		color: @grey1;
 		text-decoration: none;
 		cursor: pointer;
 	}
 }
 
 // GRID
 .sorting,
 .sorting_desc,
 .sorting_asc {
 	cursor: pointer;
 }
 .sorting_desc:after {
 	content: "\00A0\25B2";
 	font-size: .75em;
 }
 .sorting_asc:after {
 	content: "\00A0\25BC";
 	font-size: .68em;
 }
 
 
 .user_auth_tokens {
 
     &.truncate {
         white-space: nowrap;
         overflow: hidden;
         text-overflow: ellipsis;
     }
 
 	.fields .field .input {
 		margin: 0;
 	}
 
 	input#description {
 		width: 100px;
 		margin: 0;
 	}
 
 	.drop-menu {
 	    // TODO: johbo: Remove this, should work out of the box when
 	    // having multiple inputs inline
 		margin: 0 0 0 5px;
 	}
 }
 #user_list_table {
   .closed {
     background-color: @grey6;
   }
 }
 
 
 input {
 	&.disabled {
 		opacity: .5;
 	}
 }
 
 // remove extra padding in firefox
 input::-moz-focus-inner { border:0; padding:0 }
 
 .adjacent input {
 	margin-bottom: @padding;
 }
 
 .permissions_boxes {
 	display: block;
 }
 
 //TODO: lisa: this should be in tables
 .show_more_col {
     width: 20px;
 }
 
 //FORMS
 
 .medium-inline,
 input#description.medium-inline {
 	display: inline;
 	width: @medium-inline-input-width;
 	min-width: 100px;
 }
 
 select {
 	//reset
 	-webkit-appearance: none;
 	-moz-appearance: none;
 
 	display: inline-block;
 	height: 28px;
 	width: auto;
 	margin: 0 @padding @padding 0;
 	padding: 0 18px 0 8px;
 	line-height:1em;
 	font-size: @basefontsize;
 	border: @border-thickness solid @rcblue;
 	background:white url("../images/dt-arrow-dn.png") no-repeat 100% 50%;
 	color: @rcblue;
 
 	&:after {
 		content: "\00A0\25BE";
 	}
 
 	&:focus {
 		outline: none;
 	}
 }
 
 option {
 	&:focus {
 		outline: none;
 	}
 }
 
 input,
 textarea {
 	padding: @input-padding;
 	border: @input-border-thickness solid @border-highlight-color;
 	.border-radius (@border-radius);
 	font-family: @text-light;
 	font-size: @basefontsize;
 
 	&.input-sm {
 		padding: 5px;
 	}
 
 	&#description {
 		min-width: @input-description-minwidth;
 		min-height: 1em;
 		padding: 10px;
 	}
 }
 
 .field-sm {
     input,
     textarea {
         padding: 5px;
     }
 }
 
 textarea {
 	display: block;
 	clear: both;
 	width: 100%;
 	min-height: 100px;
 	margin-bottom: @padding;
     .box-sizing(border-box);
     overflow: auto;
 }
 
 label {
 	font-family: @text-light;
 }
 
 // GRAVATARS
 // centers gravatar on username to the right
 
 .gravatar {
     display: inline;
     min-width: 16px;
     min-height: 16px;
     margin: -5px 0;
     padding: 0;
     line-height: 1em;
     border: 1px solid @grey4;
     box-sizing: content-box;
 
     &.gravatar-large {
         margin: -0.5em .25em -0.5em 0;
     }
 
     & + .user {
         display: inline;
         margin: 0;
         padding: 0 0 0 .17em;
         line-height: 1em;
     }
 }
 
 .user-inline-data {
     display: inline-block;
     float: left;
     padding-left: .5em;
     line-height: 1.3em;
 }
 
 .rc-user { // gravatar + user wrapper
     float: left;
     position: relative;
     min-width: 100px;
     max-width: 200px;
     min-height: (@gravatar-size + @border-thickness * 2); // account for border
     display: block;
     padding: 0 0 0 (@gravatar-size  + @basefontsize/2 + @border-thickness * 2);
 
 
     .gravatar {
         display: block;
         position: absolute;
         top: 0;
         left: 0;
         min-width:  @gravatar-size;
         min-height: @gravatar-size;
         margin: 0;
     }
 
     .user {
         display: block;
         max-width: 175px;
         padding-top: 2px;
         overflow: hidden;
         text-overflow: ellipsis;
     }
 }
 
 .gist-gravatar,
 .journal_container {
     .gravatar-large {
         margin: 0 .5em -10px 0;
     }
 }
 
 
 // ADMIN SETTINGS
 
 // Tag Patterns
 .tag_patterns {
 	.tag_input {
 		margin-bottom: @padding;
 	}
 }
 
 .locked_input {
     position: relative;
 
     input {
         display: inline;
         margin-top: 3px;
     }
 
     br {
         display: none;
     }
 
     .error-message {
         float: left;
         width: 100%;
     }
 
     .lock_input_button {
         display: inline;
     }
 
     .help-block {
         clear: both;
     }
 }
 
 // Notifications
 
 .notifications_buttons {
 	margin: 0 0 @space 0;
 	padding: 0;
 
 	.btn {
 		display: inline-block;
 	}
 }
 
 .notification-list {
 
 	div {
 		display: inline-block;
 		vertical-align: middle;
 	}
 
 	.container {
 		display: block;
 		margin: 0 0 @padding 0;
 	}
 
 	.delete-notifications {
 		margin-left: @padding;
 		text-align: right;
         cursor: pointer;
 	}
 
 	.read-notifications {
 		margin-left: @padding/2;
 		text-align: right;
 		width: 35px;
         cursor: pointer;
 	}
 
 	.icon-minus-sign {
 		color: @alert2;
 	}
 
 	.icon-ok-sign {
 		color: @alert1;
 	}
 }
 
 .user_settings {
 	float: left;
 	clear: both;
 	display: block;
 	width: 100%;
 
 	.gravatar_box {
 		margin-bottom: @padding;
 
 		&:after {
 			content: " ";
 			clear: both;
 			width: 100%;
 		}
 	}
 
 	.fields .field {
 		clear: both;
 	}
 }
 
 .advanced_settings {
 	margin-bottom: @space;
 
 	.help-block {
 		margin-left: 0;
 	}
 
 	button + .help-block {
 		margin-top: @padding;
 	}
 }
 
 // admin settings radio buttons and labels
 .label-2 {
 	float: left;
 	width: @label2-width;
 
 	label {
 		color: @grey1;
 	}
 }
 .checkboxes {
 	float: left;
 	width: @checkboxes-width;
 	margin-bottom: @padding;
 
 	.checkbox {
 		width: 100%;
 
 		label {
 			margin: 0;
 			padding: 0;
 		}
 	}
 
 	.checkbox + .checkbox {
 		display: inline-block;
 	}
 
 	label {
 		margin-right: 1em;
 	}
 }
 
 // CHANGELOG
 .container_header {
     float: left;
 	display: block;
 	width: 100%;
 	margin: @padding 0 @padding;
 
     #filter_changelog {
         float: left;
         margin-right: @padding;
     }
 
     .breadcrumbs_light {
         display: inline-block;
     }
 }
 
 .info_box {
 	float: right;
 }
 
 
 #graph_nodes {
     padding-top: 43px;
 }
 
 #graph_content{
 
     // adjust for table headers so that graph renders properly
     //           #graph_nodes padding - table cell padding
     padding-top: (@space - (@basefontsize * 2.4));
 
     &.graph_full_width {
         width: 100%;
         max-width: 100%;
     }
 }
 
 #graph {
     .flag_status {
         margin: 0;
     }
 
     .pagination-left {
         float: left;
         clear: both;
     }
 
     .log-container {
         max-width: 345px;
 
         .message{
             max-width: 340px;
         }
     }
 
     .graph-col-wrapper {
         padding-left: 110px;
 
         #graph_nodes {
             width: 100px;
             margin-left: -110px;
             float: left;
             clear: left;
         }
     }
 }
 
 #filter_changelog {
     float: left;
 }
 
 
 //--- THEME ------------------//
 
 #logo {
 	float: left;
 	margin: 9px 0 0 0;
 
     .header {
     	background-color: transparent;
     }
 
     a {
     	display: inline-block;
     }
 
     img {
     	height:30px;
     }
 }
 
 .logo-wrapper {
 	float:left;
 }
 
 .branding{
 	float: left;
 	padding: 9px 2px;
 	line-height: 1em;
 	font-size: @navigation-fontsize;
 }
 
 img {
 	border: none;
 	outline: none;
 }
  user-profile-header
 label {
 
     input[type="checkbox"] {
         margin-right: 1em;
     }
     input[type="radio"] {
         margin-right: 1em;
     }
 }
 
 .flag_status {
     margin: 2px 8px 6px 2px;
     &.under_review {
         .circle(5px, @alert3);
     }
     &.approved {
         .circle(5px, @alert1);
     }
     &.rejected,
     &.forced_closed{
         .circle(5px, @alert2);
     }
     &.not_reviewed {
         .circle(5px, @grey5);
     }
 }
 
 .flag_status_comment_box {
 	margin: 5px 6px 0px 2px;
 }
 .test_pattern_preview {
 	margin: @space 0;
 
 	p {
         margin-bottom: 0;
 		border-bottom: @border-thickness solid @border-default-color;
 		color: @grey3;
 	}
 
 	.btn {
 		margin-bottom: @padding;
 	}
 }
 #test_pattern_result {
     display: none;
     &:extend(pre);
     padding: .9em;
     color: @grey3;
     background-color: @grey7;
     border-right: @border-thickness solid @border-default-color;
     border-bottom: @border-thickness solid @border-default-color;
     border-left: @border-thickness solid @border-default-color;
 }
 
 #repo_vcs_settings {
     #inherit_overlay_vcs_default {
         display: none;
     }
     #inherit_overlay_vcs_custom {
         display: custom;
     }
     &.inherited {
         #inherit_overlay_vcs_default {
             display: block;
         }
         #inherit_overlay_vcs_custom {
             display: none;
         }
     }
 }
 
 .issue-tracker-link {
 	color: @rcblue;
 }
 
 // Issue Tracker Table Show/Hide
 #repo_issue_tracker {
     #inherit_overlay {
         display: none;
     }
     #custom_overlay {
         display: custom;
     }
     &.inherited {
         #inherit_overlay {
             display: block;
         }
         #custom_overlay {
             display: none;
         }
     }
 }
 table.issuetracker {
     &.readonly {
         tr, td {
             color: @grey3;
         }
     }
     .edit {
         display: none;
     }
     .editopen {
         .edit {
             display: inline;
         }
         .entry {
             display: none;
         }
     }
     tr td.td-action {
         min-width: 117px;
     }
     td input {
         max-width: none;
         min-width: 30px;
         width: 80%;
     }
     .issuetracker_pref input {
         width: 40%;
     }
     input.edit_issuetracker_update {
         margin-right: 0;
         width: auto;
     }
 }
 
 table.integrations {
     .td-icon {
         width: 20px;
         .integration-icon {
             height: 20px;
             width: 20px;
         }
     }
 }
 
 .integrations {
     a.integration-box {
         color: @text-color;
         &:hover {
             .panel {
                 background: #fbfbfb;
             }
         }
         .integration-icon {
           width: 30px;
           height: 30px;
           margin-right: 20px;
           float: left;
         }
 
         .panel-body {
             padding: 10px;
         }
         .panel {
             margin-bottom: 10px;
         }
         h2 {
             display: inline-block;
             margin: 0;
             min-width: 140px;
         }
     }
 }
 
 //Permissions Settings
 #add_perm {
     margin: 0 0 @padding;
 	cursor: pointer;
 }
 
 .perm_ac {
     input {
         width: 95%;
     }
 }
 
 .autocomplete-suggestions {
     width: auto !important; // overrides autocomplete.js
     margin: 0;
     border: @border-thickness solid @rcblue;
     border-radius: @border-radius;
     color: @rcblue;
     background-color: white;
 }
 .autocomplete-selected {
     background: #F0F0F0;
 }
 .ac-container-wrap {
 	margin: 0;
 	padding: 8px;
 	border-bottom: @border-thickness solid @rclightblue;
 	list-style-type: none;
 	cursor: pointer;
 
 		&:hover {
 			background-color: @rclightblue;
 	}
 
 	img {
         height: @gravatar-size;
         width: @gravatar-size;
 		margin-right: 1em;
 	}
 
 	strong {
 		font-weight: normal;
 	}
 }
 
 // Settings Dropdown
 .user-menu .container {
     padding: 0 4px;
     margin: 0;
 }
 
 .user-menu .gravatar {
     cursor: pointer;
 }
 
 .codeblock {
 	margin-bottom: @padding;
     clear: both;
 
     .stats{
         overflow: hidden;
     }
 
     .message{
         textarea{
             margin: 0;
         }
     }
 
     .code-header {
     	.stats {
             line-height: 2em;
 
     		.revision_id {
     			margin-left: 0;
     		}
 			.buttons {
                 padding-right: 0;
 			}
     	}
 
         .item{
             margin-right: 0.5em;
         }
     }
 
     #editor_container{
         position: relative;
         margin: @padding;
     }
 }
 
 #file_history_container {
     display: none;
 }
 
 .file-history-inner {
     margin-bottom: 10px;
 }
 
 // Pull Requests
 .summary-details {
     width: 72%;
 }
 .pr-summary {
     border-bottom: @border-thickness solid @grey5;
     margin-bottom: @space;
 }
 .reviewers-title {
     width: 25%;
     min-width: 200px;
 }
 .reviewers {
     width: 25%;
     min-width: 200px;
 }
 .reviewers ul li {
     position: relative;
     width: 100%;
     margin-bottom: 8px;
 }
 .reviewers_member {
     width: 100%;
     overflow: auto;
 }
 .reviewer_reason {
     padding-left: 20px;
 }
 .reviewer_status {
     display: inline-block;
     vertical-align: top;
     width: 7%;
     min-width: 20px;
     height: 1.2em;
     margin-top: 3px;
     line-height: 1em;
 }
 
 .reviewer_name {
     display: inline-block;
     max-width: 83%;
     padding-right: 20px;
     vertical-align: middle;
     line-height: 1;
 
     .rc-user {
         min-width: 0;
         margin: -2px 1em 0 0;
     }
 
     .reviewer {
         float: left;
     }
 
     &.to-delete {
         .user,
         .reviewer {
             text-decoration: line-through;
         }
     }
 }
 
 .reviewer_member_remove {
     position: absolute;
     right: 0;
     top: 0;
     width: 16px;
     margin-bottom: 10px;
     padding: 0;
     color: black;
 }
 .reviewer_member_status {
     margin-top: 5px;
 }
 .pr-summary #summary{
     width: 100%;
 }
 .pr-summary .action_button:hover {
     border: 0;
     cursor: pointer;
 }
 .pr-details-title {
     padding-bottom: 8px;
     border-bottom: @border-thickness solid @grey5;
 
     .action_button.disabled {
         color: @grey4;
         cursor: inherit;
     }
     .action_button {
         color: @rcblue;
     }
 }
 .pr-details-content {
     margin-top: @textmargin;
     margin-bottom: @textmargin;
 }
 .pr-description {
     white-space:pre-wrap;
 }
 .group_members {
     margin-top: 0;
     padding: 0;
     list-style: outside none none;
 
     img {
         height: @gravatar-size;
         width: @gravatar-size;
         margin-right: .5em;
         margin-left: 3px;
     }
 
     .to-delete {
         .user {
           text-decoration: line-through;
         }
     }
 }
 
 .compare_view_commits_title {
   .disabled {
     cursor: inherit;
     &:hover{
       background-color: inherit;
       color: inherit;
     }
   }
 }
 
 // new entry in group_members
 .td-author-new-entry {
   background-color: rgba(red(@alert1), green(@alert1), blue(@alert1), 0.3);
 }
 
 .usergroup_member_remove {
     width: 16px;
     margin-bottom: 10px;
     padding: 0;
     color: black !important;
     cursor: pointer;
 }
 
 .reviewer_ac .ac-input {
     width: 92%;
     margin-bottom: 1em;
 }
 
 .compare_view_commits tr{
     height: 20px;
 }
 .compare_view_commits td {
     vertical-align: top;
     padding-top: 10px;
 }
 .compare_view_commits .author {
     margin-left: 5px;
 }
 
 .compare_view_files {
     width: 100%;
 
     td {
         vertical-align: middle;
     }
 }
 
 .compare_view_filepath {
     color: @grey1;
 }
 
 .show_more {
     display: inline-block;
     position: relative;
     vertical-align: middle;
     width: 4px;
     height: @basefontsize;
 
     &:after {
         content: "\00A0\25BE";
         display: inline-block;
         width:10px;
         line-height: 5px;
         font-size: 12px;
         cursor: pointer;
     }
 }
 
 .journal_more .show_more {
     display: inline;
 
     &:after {
         content: none;
     }
 }
 
 .open .show_more:after,
 .select2-dropdown-open .show_more:after {
     .rotate(180deg);
     margin-left: 4px;
 }
 
 
 .compare_view_commits .collapse_commit:after {
     cursor: pointer;
     content: "\00A0\25B4";
     margin-left: -3px;
     font-size: 17px;
     color: @grey4;
 }
 
 .diff_links {
     margin-left: 8px;
 }
 
 div.ancestor {
     margin: -30px 0px;
 }
 
 .cs_icon_td input[type="checkbox"] {
     display: none;
 }
 
 .cs_icon_td .expand_file_icon:after {
     cursor: pointer;
     content: "\00A0\25B6";
     font-size: 12px;
     color: @grey4;
 }
 
 .cs_icon_td .collapse_file_icon:after {
     cursor: pointer;
     content: "\00A0\25BC";
     font-size: 12px;
     color: @grey4;
 }
 
 /*new binary
 NEW_FILENODE = 1
 DEL_FILENODE = 2
 MOD_FILENODE = 3
 RENAMED_FILENODE = 4
 COPIED_FILENODE = 5
 CHMOD_FILENODE = 6
 BIN_FILENODE = 7
 */
 .cs_files_expand {
     font-size: @basefontsize + 5px;
     line-height: 1.8em;
     float: right;
 }
 
 .cs_files_expand span{
     color: @rcblue;
     cursor: pointer;
 }
 .cs_files {
     clear: both;
 	padding-bottom: @padding;
 
     .cur_cs {
         margin: 10px 2px;
         font-weight: bold;
     }
 
     .node {
         float: left;
     }
 
     .changes {
         float: right;
         color: white;
         font-size: @basefontsize - 4px;
         margin-top: 4px;
         opacity: 0.6;
         filter: Alpha(opacity=60); /* IE8 and earlier */
 
         .added {
             background-color: @alert1;
             float: left;
             text-align: center;
         }
 
         .deleted {
             background-color: @alert2;
             float: left;
             text-align: center;
         }
 
         .bin {
             background-color: @alert1;
             text-align: center;
         }
 
         /*new binary*/
         .bin.bin1 {
             background-color: @alert1;
             text-align: center;
         }
 
         /*deleted binary*/
         .bin.bin2 {
             background-color: @alert2;
             text-align: center;
         }
 
         /*mod binary*/
         .bin.bin3 {
             background-color: @grey2;
             text-align: center;
         }
 
         /*rename file*/
         .bin.bin4 {
             background-color: @alert4;
             text-align: center;
         }
 
         /*copied file*/
         .bin.bin5 {
             background-color: @alert4;
             text-align: center;
         }
 
         /*chmod file*/
         .bin.bin6 {
             background-color: @grey2;
             text-align: center;
         }
     }
 }
 
 .cs_files .cs_added, .cs_files .cs_A,
 .cs_files .cs_added, .cs_files .cs_M,
 .cs_files .cs_added, .cs_files .cs_D {
     height: 16px;
     padding-right: 10px;
     margin-top: 7px;
     text-align: left;
 }
 
 .cs_icon_td {
   min-width: 16px;
   width: 16px;
 }
 
 .pull-request-merge {
     border: 1px solid @grey5;
     padding: 10px 0px 20px;
     margin-top: 10px;
     margin-bottom: 20px;
 }
 
 .pull-request-merge ul {
     padding: 0px 0px;
 }
 
 .pull-request-merge li:before{
     content:none;
 }
 
 .pull-request-merge .pull-request-wrap {
     height: auto;
     padding: 0px 0px;
     text-align: right;
 }
 
 .pull-request-merge span {
     margin-right: 5px;
 }
 
 .pull-request-merge-actions {
     height: 30px;
     padding: 0px 0px;
 }
 
+.merge-status {
+  margin-right: 5px;
+}
+
 .merge-message {
     font-size: 1.2em
 }
-.merge-message li{
-    text-decoration: none;
-}
 
-.merge-message.success i {
+.merge-message.success i,
+.merge-icon.success i {
     color:@alert1;
 }
-.merge-message.warning i {
-  color: @alert3;
-}
-.merge-message.error i {
-    color:@alert2;
-}
 
+.merge-message.warning i,
+.merge-icon.warning i {
+  color: @alert3;
+}
 
+.merge-message.error i,
+.merge-icon.error i  {
+    color:@alert2;
+}
 
 .pr-versions {
     position: relative;
     top: 6px;
 }
 
 #close_pull_request {
     margin-right: 0px;
 }
 
 .empty_data {
     color: @grey4;
 }
 
 #changeset_compare_view_content {
     margin-bottom: @space;
     clear: both;
     width: 100%;
     box-sizing: border-box;
     .border-radius(@border-radius);
 
     .help-block {
         margin: @padding 0;
         color: @text-color;
     }
 
     .empty_data {
         margin: @padding 0;
     }
 
     .alert {
         margin-bottom: @space;
     }
 }
 
 .table_disp {
 	.status {
 		width: auto;
 
 		.flag_status {
 			float: left;
 		}
 	}
 }
 
 .status_box_menu {
     margin: 0;
 }
 
 .notification-table{
 	margin-bottom: @space;
 	display: table;
 	width: 100%;
 
 	.container{
 		display: table-row;
 
 		.notification-header{
 			border-bottom: @border-thickness solid @border-default-color;
 		}
 
 		.notification-subject{
 			display: table-cell;
 		}
 	}
 }
 
 // Notifications
 .notification-header{
 	display: table;
 	width: 100%;
 	padding: floor(@basefontsize/2) 0;
     line-height: 1em;
 
 	.desc, .delete-notifications, .read-notifications{
 		display: table-cell;
 		text-align: left;
 	}
 
 	.desc{
 		width: 1163px;
 	}
 
 	.delete-notifications, .read-notifications{
 		width: 35px;
 		min-width: 35px; //fixes when only one button is displayed
 	}
 }
 
 .notification-body {
     .markdown-block,
 	.rst-block {
 		padding: @padding 0;
 	}
 
 	.notification-subject {
 		padding: @textmargin 0;
 		border-bottom: @border-thickness solid @border-default-color;
 	}
 }
 
 
 .notifications_buttons{
 	float: right;
 }
 
 #notification-status{
   display: inline;
 }
 
 // Repositories
 
 #summary.fields{
 	display: table;
 
 	.field{
 		display: table-row;
 
 		.label-summary{
 			display: table-cell;
 			min-width: @label-summary-minwidth;
 			padding-top: @padding/2;
 			padding-bottom: @padding/2;
 			padding-right: @padding/2;
 		}
 
 		.input{
 			display: table-cell;
 			padding: @padding/2;
 
 			input{
 				min-width: 29em;
 				padding:  @padding/4;
 			}
 		}
 		.statistics, .downloads{
 			.disabled{
 				color: @grey4;
 			}
 		}
 	}
 }
 
 #summary{
 	width: 70%;
 }
 
 
 // Journal
 .journal.title {
 	h5 {
 		float: left;
 		margin: 0;
 		width: 70%;
 	}
 
 	ul {
 		float: right;
 		display: inline-block;
 		margin: 0;
 		width: 30%;
 		text-align: right;
 
 		li {
 			display: inline;
 			font-size: @journal-fontsize;
             line-height: 1em;
 
             &:before { content: none; }
 		}
 	}
 }
 
 .filterexample {
     position: absolute;
     top: 95px;
     left: @contentpadding;
     color: @rcblue;
     font-size: 11px;
     font-family: @text-regular;
     cursor: help;
 
     &:hover {
         color: @rcdarkblue;
     }
 
     @media (max-width:768px) {
         position: relative;
         top: auto;
         left: auto;
         display: block;
     }
 }
 
 
 #journal{
 	margin-bottom: @space;
 
 	.journal_day{
 		margin-bottom: @textmargin/2;
 		padding-bottom: @textmargin/2;
 		font-size: @journal-fontsize;
 		border-bottom: @border-thickness solid @border-default-color;
 	}
 
 	.journal_container{
 		margin-bottom: @space;
 
 		.journal_user{
 			display: inline-block;
 		}
 		.journal_action_container{
 			display: block;
 			margin-top: @textmargin;
 
 			div{
 				display: inline;
 			}
 
 			div.journal_action_params{
 				display: block;
 			}
 
 			div.journal_repo:after{
 				content: "\A";
 				white-space: pre;
 			}
 
 			div.date{
 				display: block;
 				margin-bottom: @textmargin;
 			}
 		}
 	}
 }
 
 // Files
 .edit-file-title {
     border-bottom: @border-thickness solid @border-default-color;
 
     .breadcrumbs {
         margin-bottom: 0;
     }
 }
 
 .edit-file-fieldset {
     margin-top: @sidebarpadding;
 
     .fieldset {
         .left-label {
             width: 13%;
         }
         .right-content {
             width: 87%;
             max-width: 100%;
         }
         .filename-label {
             margin-top: 13px;
         }
         .commit-message-label {
             margin-top: 4px;
         }
         .file-upload-input {
             input {
                 display: none;
             }
         }
         p {
             margin-top: 5px;
         }
 
     }
     .custom-path-link {
         margin-left: 5px;
     }
     #commit {
         resize: vertical;
     }
 }
 
 .delete-file-preview {
     max-height: 250px;
 }
 
 .new-file,
 #filter_activate,
 #filter_deactivate {
     float: left;
     margin: 0 0 0 15px;
 }
 
 h3.files_location{
     line-height: 2.4em;
 }
 
 .browser-nav {
 	display: table;
 	margin-bottom: @space;
 
 
 	.info_box {
 		display: inline-table;
 		height: 2.5em;
 
         .browser-cur-rev, .info_box_elem {
 			display: table-cell;
 			vertical-align: middle;
 		}
 
 		.info_box_elem {
 			border-top: @border-thickness solid @rcblue;
 			border-bottom: @border-thickness solid @rcblue;
 
             #at_rev, a {
                 padding: 0.6em 0.9em;
                 margin: 0;
                 .box-shadow(none);
                 border: 0;
                 height: 12px;
             }
 
             input#at_rev {
                 max-width: 50px;
                 text-align: right;
             }
 
 			&.previous {
 				border: @border-thickness solid @rcblue;
                 .disabled {
                   color: @grey4;
                   cursor: not-allowed;
                 }
 			}
 
 			&.next {
 				border: @border-thickness solid @rcblue;
                 .disabled {
                   color: @grey4;
                   cursor: not-allowed;
                 }
 			}
 		}
 
 		.browser-cur-rev {
 
 			span{
                 margin: 0;
 				color: @rcblue;
                 height: 12px;
                 display: inline-block;
                 padding:  0.7em 1em ;
                 border: @border-thickness solid @rcblue;
                 margin-right: @padding;
 			}
 		}
 	}
 
 	.search_activate {
 		display: table-cell;
 		vertical-align: middle;
 
 		input, label{
 			margin: 0;
 			padding: 0;
 		}
 
 		input{
 			margin-left: @textmargin;
 		}
 
 	}
 }
 
 .browser-cur-rev{
 	margin-bottom: @textmargin;
 }
 
 #node_filter_box_loading{
 	.info_text;
 }
 
 .browser-search {
 	margin: -25px 0px 5px 0px;
 }
 
 .node-filter {
   font-size: @repo-title-fontsize;
   padding: 4px 0px 0px 0px;
 
   .node-filter-path {
       float: left;
       color: @grey4;
     }
     .node-filter-input {
         float: left;
         margin: -2px 0px 0px 2px;
         input {
             padding: 2px;
             border: none;
             font-size: @repo-title-fontsize;
         }
     }
 }
 
 
 .browser-result{
 	td a{
 		margin-left: 0.5em;
 		display: inline-block;
 
 		em{
 			font-family: @text-bold;
 		}
 	}
 }
 
 .browser-highlight{
 	background-color: @grey5-alpha;
 }
 
 
 // Search
 
 .search-form{
     #q {
         width: @search-form-width;
     }
 	.fields{
 		margin: 0 0 @space;
 	}
 
 	label{
 		display: inline-block;
 		margin-right: @textmargin;
 		padding-top: 0.25em;
 	}
 
 
 	.results{
 		clear: both;
 		margin: 0 0 @padding;
 	}
 }
 
 div.search-feedback-items {
 	display: inline-block;
 	padding:0px 0px 0px 96px;
 }
 
 div.search-code-body {
     background-color: #ffffff; padding: 5px 0 5px 10px;
     pre {
         .match { background-color: #faffa6;}
         .break { display: block; width: 100%; background-color: #DDE7EF; color: #747474; }
     }
 }
 
 .expand_commit.search {
     .show_more.open {
         height: auto;
         max-height: none;
     }
 }
 
 .search-results {
 
     h2 {
         margin-bottom: 0;
     }
     .codeblock {
         border: none;
         background: transparent;
     }
 
     .codeblock-header {
         border: none;
         background: transparent;
     }
 
     .code-body {
         border: @border-thickness solid @border-default-color;
         .border-radius(@border-radius);
     }
 
     .td-commit {
         &:extend(pre);
         border-bottom: @border-thickness solid @border-default-color;
     }
 
     .message {
         height: auto;
         max-width: 350px;
         white-space: normal;
         text-overflow: initial;
         overflow: visible;
 
         .match { background-color: #faffa6;}
         .break { background-color: #DDE7EF; width: 100%; color: #747474; display: block; }
     }
 
 }
 
 table.rctable td.td-search-results div {
     max-width: 100%;
 }
 
 #tip-box, .tip-box{
 	padding: @menupadding/2;
 	display: block;
 	border: @border-thickness solid @border-highlight-color;
 	.border-radius(@border-radius);
 	background-color: white;
     z-index: 99;
     white-space: pre-wrap;
 }
 
 #linktt {
     width: 79px;
 }
 
 #help_kb .modal-content{
 	max-width: 750px;
 	margin: 10% auto;
 
 	table{
 		td,th{
 			border-bottom: none;
 			line-height: 2.5em;
 		}
 		th{
 			padding-bottom: @textmargin/2;
 		}
 		td.keys{
 			text-align: center;
 		}
 	}
 
 	.block-left{
 		width: 45%;
 		margin-right: 5%;
 	}
 	.modal-footer{
 		clear: both;
 	}
 	.key.tag{
 		padding: 0.5em;
 		background-color: @rcblue;
 		color: white;
 		border-color: @rcblue;
 		.box-shadow(none);
 	}
 }
 
 
 
 //--- IMPORTS FOR REFACTORED STYLES ------------------//
 
 @import 'statistics-graph';
 @import 'tables';
 @import 'forms';
 @import 'diff';
 @import 'summary';
 @import 'navigation';
 
 //--- SHOW/HIDE SECTIONS --//
 
 .btn-collapse {
     float: right;
     text-align: right;
     font-family: @text-light;
     font-size: @basefontsize;
     cursor: pointer;
     border: none;
     color: @rcblue;
 }
 
 table.rctable,
 table.dataTable {
     .btn-collapse {
         float: right;
         text-align: right;
     }
 }
 
 
 // TODO: johbo: Fix for IE10, this avoids that we see a border
 // and padding around checkboxes and radio boxes. Move to the right place,
 // or better: Remove this once we did the form refactoring.
 input[type=checkbox],
 input[type=radio] {
     padding: 0;
     border: none;
 }
 
 .toggle-ajax-spinner{
   height: 16px;
   width: 16px;
 }

rhodecode/templates/pullrequests/pullrequest_merge_checks.mako

@@ -1,37 +1,44 b''
 
 <div class="pull-request-wrap">
 
+
+    % if c.pr_merge_possible:
+        <h2 class="merge-status">
+            <span class="merge-icon success"><i class="icon-true"></i></span>
+            ${_('This pull request can be merged automatically.')}
+        </h2>
+    % else:
+        <h2 class="merge-status">
+            <span class="merge-icon warning"><i class="icon-false"></i></span>
+            ${_('Merge is not currently possible because of below failed checks.')}
+        </h2>
+    % endif
+
     <ul>
-        % for pr_check_type, pr_check_msg in c.pr_merge_checks:
+        % for pr_check_type, pr_check_msg in c.pr_merge_errors:
             <li>
                 <span class="merge-message ${pr_check_type}" data-role="merge-message">
-                    % if pr_check_type in ['success']:
-                        <i class="icon-true"></i>
-                    % else:
-                        <i class="icon-false"></i>
-                    % endif
-                    ${pr_check_msg}
+                    - ${pr_check_msg}
                 </span>
             </li>
         % endfor
     </ul>
 
     <div class="pull-request-merge-actions">
         % if c.allowed_to_merge:
         <div class="pull-right">
           ${h.secure_form(url('pullrequest_merge', repo_name=c.repo_name, pull_request_id=c.pull_request.pull_request_id), id='merge_pull_request_form')}
-          <% merge_disabled = ' disabled' if c.pr_merge_status is False else '' %>
+          <% merge_disabled = ' disabled' if c.pr_merge_possible is False else '' %>
           <a class="btn" href="#" onclick="refreshMergeChecks(); return false;">${_('refresh checks')}</a>
           <input type="submit" id="merge_pull_request" value="${_('Merge Pull Request')}" class="btn${merge_disabled}"${merge_disabled}>
           ${h.end_form()}
         </div>
         % elif c.rhodecode_user.username != h.DEFAULT_USER:
             <a class="btn" href="#" onclick="refreshMergeChecks(); return false;">${_('refresh checks')}</a>
             <input type="submit" value="${_('Merge Pull Request')}" class="btn disabled" disabled="disabled" title="${_('You are not allowed to merge this pull request.')}">
         % else:
           <input type="submit" value="${_('Login to Merge this Pull Request')}" class="btn disabled" disabled="disabled">
         % endif
     </div>
-
 </div>
 

rhodecode/tests/functional/test_pullrequests.py

@@ -1,1064 +1,1067 b''
 # -*- coding: utf-8 -*-
 
 # Copyright (C) 2010-2017 RhodeCode GmbH
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License, version 3
 # (only), as published by the Free Software Foundation.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # This program is dual-licensed. If you wish to learn more about the
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 import mock
 import pytest
 from webob.exc import HTTPNotFound
 
 import rhodecode
 from rhodecode.lib.vcs.nodes import FileNode
 from rhodecode.model.changeset_status import ChangesetStatusModel
 from rhodecode.model.db import (
     PullRequest, ChangesetStatus, UserLog, Notification)
 from rhodecode.model.meta import Session
 from rhodecode.model.pull_request import PullRequestModel
 from rhodecode.model.user import UserModel
 from rhodecode.model.repo import RepoModel
 from rhodecode.tests import assert_session_flash, url, TEST_USER_ADMIN_LOGIN
 from rhodecode.tests.utils import AssertResponse
 
 
 @pytest.mark.usefixtures('app', 'autologin_user')
 @pytest.mark.backends("git", "hg")
 class TestPullrequestsController:
 
     def test_index(self, backend):
         self.app.get(url(
             controller='pullrequests', action='index',
             repo_name=backend.repo_name))
 
     def test_option_menu_create_pull_request_exists(self, backend):
         repo_name = backend.repo_name
         response = self.app.get(url('summary_home', repo_name=repo_name))
 
         create_pr_link = '<a href="%s">Create Pull Request</a>' % url(
             'pullrequest', repo_name=repo_name)
         response.mustcontain(create_pr_link)
 
     def test_global_redirect_of_pr(self, backend, pr_util):
         pull_request = pr_util.create_pull_request()
 
         response = self.app.get(
             url('pull_requests_global',
                 pull_request_id=pull_request.pull_request_id))
 
         repo_name = pull_request.target_repo.repo_name
         redirect_url = url('pullrequest_show', repo_name=repo_name,
                            pull_request_id=pull_request.pull_request_id)
         assert response.status == '302 Found'
         assert redirect_url in response.location
 
     def test_create_pr_form_with_raw_commit_id(self, backend):
         repo = backend.repo
 
         self.app.get(
             url(controller='pullrequests', action='index',
                 repo_name=repo.repo_name,
                 commit=repo.get_commit().raw_id),
             status=200)
 
     @pytest.mark.parametrize('pr_merge_enabled', [True, False])
     def test_show(self, pr_util, pr_merge_enabled):
         pull_request = pr_util.create_pull_request(
             mergeable=pr_merge_enabled, enable_notifications=False)
 
         response = self.app.get(url(
             controller='pullrequests', action='show',
             repo_name=pull_request.target_repo.scm_instance().name,
             pull_request_id=str(pull_request.pull_request_id)))
 
         for commit_id in pull_request.revisions:
             response.mustcontain(commit_id)
 
         assert pull_request.target_ref_parts.type in response
         assert pull_request.target_ref_parts.name in response
         target_clone_url = pull_request.target_repo.clone_url()
         assert target_clone_url in response
 
         assert 'class="pull-request-merge"' in response
         assert (
             'Server-side pull request merging is disabled.'
             in response) != pr_merge_enabled
 
     def test_close_status_visibility(self, pr_util, csrf_token):
         from rhodecode.tests.functional.test_login import login_url, logut_url
         # Logout
         response = self.app.post(
             logut_url,
             params={'csrf_token': csrf_token})
         # Login as regular user
         response = self.app.post(login_url,
                                  {'username': 'test_regular',
                                   'password': 'test12'})
 
         pull_request = pr_util.create_pull_request(author='test_regular')
 
         response = self.app.get(url(
             controller='pullrequests', action='show',
             repo_name=pull_request.target_repo.scm_instance().name,
             pull_request_id=str(pull_request.pull_request_id)))
 
         assert 'Server-side pull request merging is disabled.' in response
         assert 'value="forced_closed"' in response
 
     def test_show_invalid_commit_id(self, pr_util):
         # Simulating invalid revisions which will cause a lookup error
         pull_request = pr_util.create_pull_request()
         pull_request.revisions = ['invalid']
         Session().add(pull_request)
         Session().commit()
 
         response = self.app.get(url(
             controller='pullrequests', action='show',
             repo_name=pull_request.target_repo.scm_instance().name,
             pull_request_id=str(pull_request.pull_request_id)))
 
         for commit_id in pull_request.revisions:
             response.mustcontain(commit_id)
 
     def test_show_invalid_source_reference(self, pr_util):
         pull_request = pr_util.create_pull_request()
         pull_request.source_ref = 'branch:b:invalid'
         Session().add(pull_request)
         Session().commit()
 
         self.app.get(url(
             controller='pullrequests', action='show',
             repo_name=pull_request.target_repo.scm_instance().name,
             pull_request_id=str(pull_request.pull_request_id)))
 
     def test_edit_title_description(self, pr_util, csrf_token):
         pull_request = pr_util.create_pull_request()
         pull_request_id = pull_request.pull_request_id
 
         response = self.app.post(
             url(controller='pullrequests', action='update',
                 repo_name=pull_request.target_repo.repo_name,
                 pull_request_id=str(pull_request_id)),
             params={
                 'edit_pull_request': 'true',
                 '_method': 'put',
                 'title': 'New title',
                 'description': 'New description',
                 'csrf_token': csrf_token})
 
         assert_session_flash(
             response, u'Pull request title & description updated.',
             category='success')
 
         pull_request = PullRequest.get(pull_request_id)
         assert pull_request.title == 'New title'
         assert pull_request.description == 'New description'
 
     def test_edit_title_description_closed(self, pr_util, csrf_token):
         pull_request = pr_util.create_pull_request()
         pull_request_id = pull_request.pull_request_id
         pr_util.close()
 
         response = self.app.post(
             url(controller='pullrequests', action='update',
                 repo_name=pull_request.target_repo.repo_name,
                 pull_request_id=str(pull_request_id)),
             params={
                 'edit_pull_request': 'true',
                 '_method': 'put',
                 'title': 'New title',
                 'description': 'New description',
                 'csrf_token': csrf_token})
 
         assert_session_flash(
             response, u'Cannot update closed pull requests.',
             category='error')
 
     def test_update_invalid_source_reference(self, pr_util, csrf_token):
         from rhodecode.lib.vcs.backends.base import UpdateFailureReason
 
         pull_request = pr_util.create_pull_request()
         pull_request.source_ref = 'branch:invalid-branch:invalid-commit-id'
         Session().add(pull_request)
         Session().commit()
 
         pull_request_id = pull_request.pull_request_id
 
         response = self.app.post(
             url(controller='pullrequests', action='update',
                 repo_name=pull_request.target_repo.repo_name,
                 pull_request_id=str(pull_request_id)),
             params={'update_commits': 'true', '_method': 'put',
                     'csrf_token': csrf_token})
 
         expected_msg = PullRequestModel.UPDATE_STATUS_MESSAGES[
             UpdateFailureReason.MISSING_SOURCE_REF]
         assert_session_flash(response, expected_msg, category='error')
 
     def test_missing_target_reference(self, pr_util, csrf_token):
         from rhodecode.lib.vcs.backends.base import MergeFailureReason
         pull_request = pr_util.create_pull_request(
             approved=True, mergeable=True)
         pull_request.target_ref = 'branch:invalid-branch:invalid-commit-id'
         Session().add(pull_request)
         Session().commit()
 
         pull_request_id = pull_request.pull_request_id
         pull_request_url = url(
             controller='pullrequests', action='show',
             repo_name=pull_request.target_repo.repo_name,
             pull_request_id=str(pull_request_id))
 
         response = self.app.get(pull_request_url)
 
         assertr = AssertResponse(response)
         expected_msg = PullRequestModel.MERGE_STATUS_MESSAGES[
             MergeFailureReason.MISSING_TARGET_REF]
         assertr.element_contains(
             'span[data-role="merge-message"]', str(expected_msg))
 
     def test_comment_and_close_pull_request(self, pr_util, csrf_token):
         pull_request = pr_util.create_pull_request(approved=True)
         pull_request_id = pull_request.pull_request_id
         author = pull_request.user_id
         repo = pull_request.target_repo.repo_id
 
         self.app.post(
             url(controller='pullrequests',
                 action='comment',
                 repo_name=pull_request.target_repo.scm_instance().name,
                 pull_request_id=str(pull_request_id)),
             params={
                 'changeset_status':
                     ChangesetStatus.STATUS_APPROVED + '_closed',
                 'change_changeset_status': 'on',
                 'text': '',
                 'csrf_token': csrf_token},
             status=302)
 
         action = 'user_closed_pull_request:%d' % pull_request_id
         journal = UserLog.query()\
             .filter(UserLog.user_id == author)\
             .filter(UserLog.repository_id == repo)\
             .filter(UserLog.action == action)\
             .all()
         assert len(journal) == 1
 
     def test_reject_and_close_pull_request(self, pr_util, csrf_token):
         pull_request = pr_util.create_pull_request()
         pull_request_id = pull_request.pull_request_id
         response = self.app.post(
             url(controller='pullrequests',
                 action='update',
                 repo_name=pull_request.target_repo.scm_instance().name,
                 pull_request_id=str(pull_request.pull_request_id)),
             params={'close_pull_request': 'true', '_method': 'put',
                     'csrf_token': csrf_token})
 
         pull_request = PullRequest.get(pull_request_id)
 
         assert response.json is True
         assert pull_request.is_closed()
 
         # check only the latest status, not the review status
         status = ChangesetStatusModel().get_status(
             pull_request.source_repo, pull_request=pull_request)
         assert status == ChangesetStatus.STATUS_REJECTED
 
     def test_comment_force_close_pull_request(self, pr_util, csrf_token):
         pull_request = pr_util.create_pull_request()
         pull_request_id = pull_request.pull_request_id
         reviewers_data = [(1, ['reason']), (2, ['reason2'])]
         PullRequestModel().update_reviewers(pull_request_id, reviewers_data)
         author = pull_request.user_id
         repo = pull_request.target_repo.repo_id
         self.app.post(
             url(controller='pullrequests',
                 action='comment',
                 repo_name=pull_request.target_repo.scm_instance().name,
                 pull_request_id=str(pull_request_id)),
             params={
                 'changeset_status': 'forced_closed',
                 'csrf_token': csrf_token},
             status=302)
 
         pull_request = PullRequest.get(pull_request_id)
 
         action = 'user_closed_pull_request:%d' % pull_request_id
         journal = UserLog.query().filter(
             UserLog.user_id == author,
             UserLog.repository_id == repo,
             UserLog.action == action).all()
         assert len(journal) == 1
 
         # check only the latest status, not the review status
         status = ChangesetStatusModel().get_status(
             pull_request.source_repo, pull_request=pull_request)
         assert status == ChangesetStatus.STATUS_REJECTED
 
     def test_create_pull_request(self, backend, csrf_token):
         commits = [
             {'message': 'ancestor'},
             {'message': 'change'},
             {'message': 'change2'},
         ]
         commit_ids = backend.create_master_repo(commits)
         target = backend.create_repo(heads=['ancestor'])
         source = backend.create_repo(heads=['change2'])
 
         response = self.app.post(
             url(
                 controller='pullrequests',
                 action='create',
                 repo_name=source.repo_name
             ),
             [
                 ('source_repo', source.repo_name),
                 ('source_ref', 'branch:default:' + commit_ids['change2']),
                 ('target_repo', target.repo_name),
                 ('target_ref',  'branch:default:' + commit_ids['ancestor']),
                 ('pullrequest_desc', 'Description'),
                 ('pullrequest_title', 'Title'),
                 ('__start__', 'review_members:sequence'),
                     ('__start__', 'reviewer:mapping'),
                         ('user_id', '1'),
                         ('__start__', 'reasons:sequence'),
                             ('reason', 'Some reason'),
                         ('__end__', 'reasons:sequence'),
                     ('__end__', 'reviewer:mapping'),
                 ('__end__', 'review_members:sequence'),
                 ('__start__', 'revisions:sequence'),
                     ('revisions', commit_ids['change']),
                     ('revisions', commit_ids['change2']),
                 ('__end__', 'revisions:sequence'),
                 ('user', ''),
                 ('csrf_token', csrf_token),
             ],
             status=302)
 
         location = response.headers['Location']
         pull_request_id = int(location.rsplit('/', 1)[1])
         pull_request = PullRequest.get(pull_request_id)
 
         # check that we have now both revisions
         assert pull_request.revisions == [commit_ids['change2'], commit_ids['change']]
         assert pull_request.source_ref == 'branch:default:' + commit_ids['change2']
         expected_target_ref = 'branch:default:' + commit_ids['ancestor']
         assert pull_request.target_ref == expected_target_ref
 
     def test_reviewer_notifications(self, backend, csrf_token):
         # We have to use the app.post for this test so it will create the
         # notifications properly with the new PR
         commits = [
             {'message': 'ancestor',
              'added': [FileNode('file_A', content='content_of_ancestor')]},
             {'message': 'change',
              'added': [FileNode('file_a', content='content_of_change')]},
             {'message': 'change-child'},
             {'message': 'ancestor-child', 'parents': ['ancestor'],
              'added': [
                 FileNode('file_B', content='content_of_ancestor_child')]},
             {'message': 'ancestor-child-2'},
         ]
         commit_ids = backend.create_master_repo(commits)
         target = backend.create_repo(heads=['ancestor-child'])
         source = backend.create_repo(heads=['change'])
 
         response = self.app.post(
             url(
                 controller='pullrequests',
                 action='create',
                 repo_name=source.repo_name
             ),
             [
                 ('source_repo', source.repo_name),
                 ('source_ref', 'branch:default:' + commit_ids['change']),
                 ('target_repo', target.repo_name),
                 ('target_ref',  'branch:default:' + commit_ids['ancestor-child']),
                 ('pullrequest_desc', 'Description'),
                 ('pullrequest_title', 'Title'),
                 ('__start__', 'review_members:sequence'),
                     ('__start__', 'reviewer:mapping'),
                         ('user_id', '2'),
                         ('__start__', 'reasons:sequence'),
                             ('reason', 'Some reason'),
                         ('__end__', 'reasons:sequence'),
                     ('__end__', 'reviewer:mapping'),
                 ('__end__', 'review_members:sequence'),
                 ('__start__', 'revisions:sequence'),
                     ('revisions', commit_ids['change']),
                 ('__end__', 'revisions:sequence'),
                 ('user', ''),
                 ('csrf_token', csrf_token),
             ],
             status=302)
 
         location = response.headers['Location']
         pull_request_id = int(location.rsplit('/', 1)[1])
         pull_request = PullRequest.get(pull_request_id)
 
         # Check that a notification was made
         notifications = Notification.query()\
             .filter(Notification.created_by == pull_request.author.user_id,
                     Notification.type_ == Notification.TYPE_PULL_REQUEST,
                     Notification.subject.contains("wants you to review "
                                                   "pull request #%d"
                                                   % pull_request_id))
         assert len(notifications.all()) == 1
 
         # Change reviewers and check that a notification was made
         PullRequestModel().update_reviewers(
             pull_request.pull_request_id, [(1, [])])
         assert len(notifications.all()) == 2
 
     def test_create_pull_request_stores_ancestor_commit_id(self, backend,
                                                            csrf_token):
         commits = [
             {'message': 'ancestor',
              'added': [FileNode('file_A', content='content_of_ancestor')]},
             {'message': 'change',
              'added': [FileNode('file_a', content='content_of_change')]},
             {'message': 'change-child'},
             {'message': 'ancestor-child', 'parents': ['ancestor'],
              'added': [
                 FileNode('file_B', content='content_of_ancestor_child')]},
             {'message': 'ancestor-child-2'},
         ]
         commit_ids = backend.create_master_repo(commits)
         target = backend.create_repo(heads=['ancestor-child'])
         source = backend.create_repo(heads=['change'])
 
         response = self.app.post(
             url(
                 controller='pullrequests',
                 action='create',
                 repo_name=source.repo_name
             ),
             [
                 ('source_repo', source.repo_name),
                 ('source_ref', 'branch:default:' + commit_ids['change']),
                 ('target_repo', target.repo_name),
                 ('target_ref',  'branch:default:' + commit_ids['ancestor-child']),
                 ('pullrequest_desc', 'Description'),
                 ('pullrequest_title', 'Title'),
                 ('__start__', 'review_members:sequence'),
                     ('__start__', 'reviewer:mapping'),
                         ('user_id', '1'),
                         ('__start__', 'reasons:sequence'),
                             ('reason', 'Some reason'),
                         ('__end__', 'reasons:sequence'),
                     ('__end__', 'reviewer:mapping'),
                 ('__end__', 'review_members:sequence'),
                 ('__start__', 'revisions:sequence'),
                     ('revisions', commit_ids['change']),
                 ('__end__', 'revisions:sequence'),
                 ('user', ''),
                 ('csrf_token', csrf_token),
             ],
             status=302)
 
         location = response.headers['Location']
         pull_request_id = int(location.rsplit('/', 1)[1])
         pull_request = PullRequest.get(pull_request_id)
 
         # target_ref has to point to the ancestor's commit_id in order to
         # show the correct diff
         expected_target_ref = 'branch:default:' + commit_ids['ancestor']
         assert pull_request.target_ref == expected_target_ref
 
         # Check generated diff contents
         response = response.follow()
         assert 'content_of_ancestor' not in response.body
         assert 'content_of_ancestor-child' not in response.body
         assert 'content_of_change' in response.body
 
     def test_merge_pull_request_enabled(self, pr_util, csrf_token):
         # Clear any previous calls to rcextensions
         rhodecode.EXTENSIONS.calls.clear()
 
         pull_request = pr_util.create_pull_request(
             approved=True, mergeable=True)
         pull_request_id = pull_request.pull_request_id
         repo_name = pull_request.target_repo.scm_instance().name,
 
         response = self.app.post(
             url(controller='pullrequests',
                 action='merge',
                 repo_name=str(repo_name[0]),
                 pull_request_id=str(pull_request_id)),
             params={'csrf_token': csrf_token}).follow()
 
         pull_request = PullRequest.get(pull_request_id)
 
         assert response.status_int == 200
         assert pull_request.is_closed()
         assert_pull_request_status(
             pull_request, ChangesetStatus.STATUS_APPROVED)
 
         # Check the relevant log entries were added
         user_logs = UserLog.query().order_by('-user_log_id').limit(4)
         actions = [log.action for log in user_logs]
         pr_commit_ids = PullRequestModel()._get_commit_ids(pull_request)
         expected_actions = [
             u'user_closed_pull_request:%d' % pull_request_id,
             u'user_merged_pull_request:%d' % pull_request_id,
             # The action below reflect that the post push actions were executed
             u'user_commented_pull_request:%d' % pull_request_id,
             u'push:%s' % ','.join(pr_commit_ids),
         ]
         assert actions == expected_actions
 
         # Check post_push rcextension was really executed
         push_calls = rhodecode.EXTENSIONS.calls['post_push']
         assert len(push_calls) == 1
         unused_last_call_args, last_call_kwargs = push_calls[0]
         assert last_call_kwargs['action'] == 'push'
         assert last_call_kwargs['pushed_revs'] == pr_commit_ids
 
     def test_merge_pull_request_disabled(self, pr_util, csrf_token):
         pull_request = pr_util.create_pull_request(mergeable=False)
         pull_request_id = pull_request.pull_request_id
         pull_request = PullRequest.get(pull_request_id)
 
         response = self.app.post(
             url(controller='pullrequests',
                 action='merge',
                 repo_name=pull_request.target_repo.scm_instance().name,
                 pull_request_id=str(pull_request.pull_request_id)),
             params={'csrf_token': csrf_token}).follow()
 
         assert response.status_int == 200
-        assert 'Server-side pull request merging is disabled.' in response.body
+        response.mustcontain(
+            'Merge is not currently possible because of below failed checks.')
+        response.mustcontain('Server-side pull request merging is disabled.')
 
     @pytest.mark.skip_backends('svn')
     def test_merge_pull_request_not_approved(self, pr_util, csrf_token):
         pull_request = pr_util.create_pull_request(mergeable=True)
         pull_request_id = pull_request.pull_request_id
         repo_name = pull_request.target_repo.scm_instance().name,
 
         response = self.app.post(
             url(controller='pullrequests',
                 action='merge',
                 repo_name=str(repo_name[0]),
                 pull_request_id=str(pull_request_id)),
             params={'csrf_token': csrf_token}).follow()
 
-        pull_request = PullRequest.get(pull_request_id)
+        assert response.status_int == 200
 
-        assert response.status_int == 200
-        assert ' Reviewer approval is pending.' in response.body
+        response.mustcontain(
+            'Merge is not currently possible because of below failed checks.')
+        response.mustcontain('Pull request reviewer approval is pending.')
 
     def test_update_source_revision(self, backend, csrf_token):
         commits = [
             {'message': 'ancestor'},
             {'message': 'change'},
             {'message': 'change-2'},
         ]
         commit_ids = backend.create_master_repo(commits)
         target = backend.create_repo(heads=['ancestor'])
         source = backend.create_repo(heads=['change'])
 
         # create pr from a in source to A in target
         pull_request = PullRequest()
         pull_request.source_repo = source
         # TODO: johbo: Make sure that we write the source ref this way!
         pull_request.source_ref = 'branch:{branch}:{commit_id}'.format(
             branch=backend.default_branch_name, commit_id=commit_ids['change'])
         pull_request.target_repo = target
 
         pull_request.target_ref = 'branch:{branch}:{commit_id}'.format(
             branch=backend.default_branch_name,
             commit_id=commit_ids['ancestor'])
         pull_request.revisions = [commit_ids['change']]
         pull_request.title = u"Test"
         pull_request.description = u"Description"
         pull_request.author = UserModel().get_by_username(
             TEST_USER_ADMIN_LOGIN)
         Session().add(pull_request)
         Session().commit()
         pull_request_id = pull_request.pull_request_id
 
         # source has ancestor - change - change-2
         backend.pull_heads(source, heads=['change-2'])
 
         # update PR
         self.app.post(
             url(controller='pullrequests', action='update',
                 repo_name=target.repo_name,
                 pull_request_id=str(pull_request_id)),
             params={'update_commits': 'true', '_method': 'put',
                     'csrf_token': csrf_token})
 
         # check that we have now both revisions
         pull_request = PullRequest.get(pull_request_id)
         assert pull_request.revisions == [
             commit_ids['change-2'], commit_ids['change']]
 
         # TODO: johbo: this should be a test on its own
         response = self.app.get(url(
             controller='pullrequests', action='index',
             repo_name=target.repo_name))
         assert response.status_int == 200
         assert 'Pull request updated to' in response.body
         assert 'with 1 added, 0 removed commits.' in response.body
 
     def test_update_target_revision(self, backend, csrf_token):
         commits = [
             {'message': 'ancestor'},
             {'message': 'change'},
             {'message': 'ancestor-new', 'parents': ['ancestor']},
             {'message': 'change-rebased'},
         ]
         commit_ids = backend.create_master_repo(commits)
         target = backend.create_repo(heads=['ancestor'])
         source = backend.create_repo(heads=['change'])
 
         # create pr from a in source to A in target
         pull_request = PullRequest()
         pull_request.source_repo = source
         # TODO: johbo: Make sure that we write the source ref this way!
         pull_request.source_ref = 'branch:{branch}:{commit_id}'.format(
             branch=backend.default_branch_name, commit_id=commit_ids['change'])
         pull_request.target_repo = target
         # TODO: johbo: Target ref should be branch based, since tip can jump
         # from branch to branch
         pull_request.target_ref = 'branch:{branch}:{commit_id}'.format(
             branch=backend.default_branch_name,
             commit_id=commit_ids['ancestor'])
         pull_request.revisions = [commit_ids['change']]
         pull_request.title = u"Test"
         pull_request.description = u"Description"
         pull_request.author = UserModel().get_by_username(
             TEST_USER_ADMIN_LOGIN)
         Session().add(pull_request)
         Session().commit()
         pull_request_id = pull_request.pull_request_id
 
         # target has ancestor - ancestor-new
         # source has ancestor - ancestor-new - change-rebased
         backend.pull_heads(target, heads=['ancestor-new'])
         backend.pull_heads(source, heads=['change-rebased'])
 
         # update PR
         self.app.post(
             url(controller='pullrequests', action='update',
                 repo_name=target.repo_name,
                 pull_request_id=str(pull_request_id)),
             params={'update_commits': 'true', '_method': 'put',
                     'csrf_token': csrf_token},
             status=200)
 
         # check that we have now both revisions
         pull_request = PullRequest.get(pull_request_id)
         assert pull_request.revisions == [commit_ids['change-rebased']]
         assert pull_request.target_ref == 'branch:{branch}:{commit_id}'.format(
             branch=backend.default_branch_name,
             commit_id=commit_ids['ancestor-new'])
 
         # TODO: johbo: This should be a test on its own
         response = self.app.get(url(
             controller='pullrequests', action='index',
             repo_name=target.repo_name))
         assert response.status_int == 200
         assert 'Pull request updated to' in response.body
         assert 'with 1 added, 1 removed commits.' in response.body
 
     def test_update_of_ancestor_reference(self, backend, csrf_token):
         commits = [
             {'message': 'ancestor'},
             {'message': 'change'},
             {'message': 'change-2'},
             {'message': 'ancestor-new', 'parents': ['ancestor']},
             {'message': 'change-rebased'},
         ]
         commit_ids = backend.create_master_repo(commits)
         target = backend.create_repo(heads=['ancestor'])
         source = backend.create_repo(heads=['change'])
 
         # create pr from a in source to A in target
         pull_request = PullRequest()
         pull_request.source_repo = source
         # TODO: johbo: Make sure that we write the source ref this way!
         pull_request.source_ref = 'branch:{branch}:{commit_id}'.format(
             branch=backend.default_branch_name,
             commit_id=commit_ids['change'])
         pull_request.target_repo = target
         # TODO: johbo: Target ref should be branch based, since tip can jump
         # from branch to branch
         pull_request.target_ref = 'branch:{branch}:{commit_id}'.format(
             branch=backend.default_branch_name,
             commit_id=commit_ids['ancestor'])
         pull_request.revisions = [commit_ids['change']]
         pull_request.title = u"Test"
         pull_request.description = u"Description"
         pull_request.author = UserModel().get_by_username(
             TEST_USER_ADMIN_LOGIN)
         Session().add(pull_request)
         Session().commit()
         pull_request_id = pull_request.pull_request_id
 
         # target has ancestor - ancestor-new
         # source has ancestor - ancestor-new - change-rebased
         backend.pull_heads(target, heads=['ancestor-new'])
         backend.pull_heads(source, heads=['change-rebased'])
 
         # update PR
         self.app.post(
             url(controller='pullrequests', action='update',
                 repo_name=target.repo_name,
                 pull_request_id=str(pull_request_id)),
             params={'update_commits': 'true', '_method': 'put',
                     'csrf_token': csrf_token},
             status=200)
 
         # Expect the target reference to be updated correctly
         pull_request = PullRequest.get(pull_request_id)
         assert pull_request.revisions == [commit_ids['change-rebased']]
         expected_target_ref = 'branch:{branch}:{commit_id}'.format(
             branch=backend.default_branch_name,
             commit_id=commit_ids['ancestor-new'])
         assert pull_request.target_ref == expected_target_ref
 
     def test_remove_pull_request_branch(self, backend_git, csrf_token):
         branch_name = 'development'
         commits = [
             {'message': 'initial-commit'},
             {'message': 'old-feature'},
             {'message': 'new-feature', 'branch': branch_name},
         ]
         repo = backend_git.create_repo(commits)
         commit_ids = backend_git.commit_ids
 
         pull_request = PullRequest()
         pull_request.source_repo = repo
         pull_request.target_repo = repo
         pull_request.source_ref = 'branch:{branch}:{commit_id}'.format(
             branch=branch_name, commit_id=commit_ids['new-feature'])
         pull_request.target_ref = 'branch:{branch}:{commit_id}'.format(
             branch=backend_git.default_branch_name,
             commit_id=commit_ids['old-feature'])
         pull_request.revisions = [commit_ids['new-feature']]
         pull_request.title = u"Test"
         pull_request.description = u"Description"
         pull_request.author = UserModel().get_by_username(
             TEST_USER_ADMIN_LOGIN)
         Session().add(pull_request)
         Session().commit()
 
         vcs = repo.scm_instance()
         vcs.remove_ref('refs/heads/{}'.format(branch_name))
 
         response = self.app.get(url(
             controller='pullrequests', action='show',
             repo_name=repo.repo_name,
             pull_request_id=str(pull_request.pull_request_id)))
 
         assert response.status_int == 200
         assert_response = AssertResponse(response)
         assert_response.element_contains(
             '#changeset_compare_view_content .alert strong',
             'Missing commits')
         assert_response.element_contains(
             '#changeset_compare_view_content .alert',
             'This pull request cannot be displayed, because one or more'
             ' commits no longer exist in the source repository.')
 
     def test_strip_commits_from_pull_request(
             self, backend, pr_util, csrf_token):
         commits = [
             {'message': 'initial-commit'},
             {'message': 'old-feature'},
             {'message': 'new-feature', 'parents': ['initial-commit']},
         ]
         pull_request = pr_util.create_pull_request(
             commits, target_head='initial-commit', source_head='new-feature',
             revisions=['new-feature'])
 
         vcs = pr_util.source_repository.scm_instance()
         if backend.alias == 'git':
             vcs.strip(pr_util.commit_ids['new-feature'], branch_name='master')
         else:
             vcs.strip(pr_util.commit_ids['new-feature'])
 
         response = self.app.get(url(
             controller='pullrequests', action='show',
             repo_name=pr_util.target_repository.repo_name,
             pull_request_id=str(pull_request.pull_request_id)))
 
         assert response.status_int == 200
         assert_response = AssertResponse(response)
         assert_response.element_contains(
             '#changeset_compare_view_content .alert strong',
             'Missing commits')
         assert_response.element_contains(
             '#changeset_compare_view_content .alert',
             'This pull request cannot be displayed, because one or more'
             ' commits no longer exist in the source repository.')
         assert_response.element_contains(
             '#update_commits',
             'Update commits')
 
     def test_strip_commits_and_update(
             self, backend, pr_util, csrf_token):
         commits = [
             {'message': 'initial-commit'},
             {'message': 'old-feature'},
             {'message': 'new-feature', 'parents': ['old-feature']},
         ]
         pull_request = pr_util.create_pull_request(
             commits, target_head='old-feature', source_head='new-feature',
             revisions=['new-feature'], mergeable=True)
 
         vcs = pr_util.source_repository.scm_instance()
         if backend.alias == 'git':
             vcs.strip(pr_util.commit_ids['new-feature'], branch_name='master')
         else:
             vcs.strip(pr_util.commit_ids['new-feature'])
 
         response = self.app.post(
             url(controller='pullrequests', action='update',
                 repo_name=pull_request.target_repo.repo_name,
                 pull_request_id=str(pull_request.pull_request_id)),
             params={'update_commits': 'true', '_method': 'put',
                     'csrf_token': csrf_token})
 
         assert response.status_int == 200
         assert response.body == 'true'
 
         # Make sure that after update, it won't raise 500 errors
         response = self.app.get(url(
             controller='pullrequests', action='show',
             repo_name=pr_util.target_repository.repo_name,
             pull_request_id=str(pull_request.pull_request_id)))
 
         assert response.status_int == 200
         assert_response = AssertResponse(response)
         assert_response.element_contains(
             '#changeset_compare_view_content .alert strong',
             'Missing commits')
 
     def test_branch_is_a_link(self, pr_util):
         pull_request = pr_util.create_pull_request()
         pull_request.source_ref = 'branch:origin:1234567890abcdef'
         pull_request.target_ref = 'branch:target:abcdef1234567890'
         Session().add(pull_request)
         Session().commit()
 
         response = self.app.get(url(
             controller='pullrequests', action='show',
             repo_name=pull_request.target_repo.scm_instance().name,
             pull_request_id=str(pull_request.pull_request_id)))
         assert response.status_int == 200
         assert_response = AssertResponse(response)
 
         origin = assert_response.get_element('.pr-origininfo .tag')
         origin_children = origin.getchildren()
         assert len(origin_children) == 1
         target = assert_response.get_element('.pr-targetinfo .tag')
         target_children = target.getchildren()
         assert len(target_children) == 1
 
         expected_origin_link = url(
             'changelog_home',
             repo_name=pull_request.source_repo.scm_instance().name,
             branch='origin')
         expected_target_link = url(
             'changelog_home',
             repo_name=pull_request.target_repo.scm_instance().name,
             branch='target')
         assert origin_children[0].attrib['href'] == expected_origin_link
         assert origin_children[0].text == 'branch: origin'
         assert target_children[0].attrib['href'] == expected_target_link
         assert target_children[0].text == 'branch: target'
 
     def test_bookmark_is_not_a_link(self, pr_util):
         pull_request = pr_util.create_pull_request()
         pull_request.source_ref = 'bookmark:origin:1234567890abcdef'
         pull_request.target_ref = 'bookmark:target:abcdef1234567890'
         Session().add(pull_request)
         Session().commit()
 
         response = self.app.get(url(
             controller='pullrequests', action='show',
             repo_name=pull_request.target_repo.scm_instance().name,
             pull_request_id=str(pull_request.pull_request_id)))
         assert response.status_int == 200
         assert_response = AssertResponse(response)
 
         origin = assert_response.get_element('.pr-origininfo .tag')
         assert origin.text.strip() == 'bookmark: origin'
         assert origin.getchildren() == []
 
         target = assert_response.get_element('.pr-targetinfo .tag')
         assert target.text.strip() == 'bookmark: target'
         assert target.getchildren() == []
 
     def test_tag_is_not_a_link(self, pr_util):
         pull_request = pr_util.create_pull_request()
         pull_request.source_ref = 'tag:origin:1234567890abcdef'
         pull_request.target_ref = 'tag:target:abcdef1234567890'
         Session().add(pull_request)
         Session().commit()
 
         response = self.app.get(url(
             controller='pullrequests', action='show',
             repo_name=pull_request.target_repo.scm_instance().name,
             pull_request_id=str(pull_request.pull_request_id)))
         assert response.status_int == 200
         assert_response = AssertResponse(response)
 
         origin = assert_response.get_element('.pr-origininfo .tag')
         assert origin.text.strip() == 'tag: origin'
         assert origin.getchildren() == []
 
         target = assert_response.get_element('.pr-targetinfo .tag')
         assert target.text.strip() == 'tag: target'
         assert target.getchildren() == []
 
     def test_description_is_escaped_on_index_page(self, backend, pr_util):
         xss_description = "<script>alert('Hi!')</script>"
         pull_request = pr_util.create_pull_request(description=xss_description)
         response = self.app.get(url(
             controller='pullrequests', action='show_all',
             repo_name=pull_request.target_repo.repo_name))
         response.mustcontain(
             "&lt;script&gt;alert(&#39;Hi!&#39;)&lt;/script&gt;")
 
     @pytest.mark.parametrize('mergeable', [True, False])
     def test_shadow_repository_link(
             self, mergeable, pr_util, http_host_stub):
         """
         Check that the pull request summary page displays a link to the shadow
         repository if the pull request is mergeable. If it is not mergeable
         the link should not be displayed.
         """
         pull_request = pr_util.create_pull_request(
             mergeable=mergeable, enable_notifications=False)
         target_repo = pull_request.target_repo.scm_instance()
         pr_id = pull_request.pull_request_id
         shadow_url = '{host}/{repo}/pull-request/{pr_id}/repository'.format(
             host=http_host_stub, repo=target_repo.name, pr_id=pr_id)
 
         response = self.app.get(url(
             controller='pullrequests', action='show',
             repo_name=target_repo.name,
             pull_request_id=str(pr_id)))
 
         assertr = AssertResponse(response)
         if mergeable:
             assertr.element_value_contains(
                 'div.pr-mergeinfo input', shadow_url)
             assertr.element_value_contains(
                 'div.pr-mergeinfo input', 'pr-merge')
         else:
             assertr.no_element_exists('div.pr-mergeinfo')
 
 
 @pytest.mark.usefixtures('app')
 @pytest.mark.backends("git", "hg")
 class TestPullrequestsControllerDelete(object):
     def test_pull_request_delete_button_permissions_admin(
             self, autologin_user, user_admin, pr_util):
         pull_request = pr_util.create_pull_request(
             author=user_admin.username, enable_notifications=False)
 
         response = self.app.get(url(
             controller='pullrequests', action='show',
             repo_name=pull_request.target_repo.scm_instance().name,
             pull_request_id=str(pull_request.pull_request_id)))
 
         response.mustcontain('id="delete_pullrequest"')
         response.mustcontain('Confirm to delete this pull request')
 
     def test_pull_request_delete_button_permissions_owner(
             self, autologin_regular_user, user_regular, pr_util):
         pull_request = pr_util.create_pull_request(
             author=user_regular.username, enable_notifications=False)
 
         response = self.app.get(url(
             controller='pullrequests', action='show',
             repo_name=pull_request.target_repo.scm_instance().name,
             pull_request_id=str(pull_request.pull_request_id)))
 
         response.mustcontain('id="delete_pullrequest"')
         response.mustcontain('Confirm to delete this pull request')
 
     def test_pull_request_delete_button_permissions_forbidden(
             self, autologin_regular_user, user_regular, user_admin, pr_util):
         pull_request = pr_util.create_pull_request(
             author=user_admin.username, enable_notifications=False)
 
         response = self.app.get(url(
             controller='pullrequests', action='show',
             repo_name=pull_request.target_repo.scm_instance().name,
             pull_request_id=str(pull_request.pull_request_id)))
         response.mustcontain(no=['id="delete_pullrequest"'])
         response.mustcontain(no=['Confirm to delete this pull request'])
 
     def test_pull_request_delete_button_permissions_can_update_cannot_delete(
             self, autologin_regular_user, user_regular, user_admin, pr_util,
             user_util):
 
         pull_request = pr_util.create_pull_request(
             author=user_admin.username, enable_notifications=False)
 
         user_util.grant_user_permission_to_repo(
             pull_request.target_repo, user_regular,
             'repository.write')
 
         response = self.app.get(url(
             controller='pullrequests', action='show',
             repo_name=pull_request.target_repo.scm_instance().name,
             pull_request_id=str(pull_request.pull_request_id)))
 
         response.mustcontain('id="open_edit_pullrequest"')
         response.mustcontain('id="delete_pullrequest"')
         response.mustcontain(no=['Confirm to delete this pull request'])
 
 
 def assert_pull_request_status(pull_request, expected_status):
     status = ChangesetStatusModel().calculated_review_status(
         pull_request=pull_request)
     assert status == expected_status
 
 
 @pytest.mark.parametrize('action', ['show_all', 'index', 'create'])
 @pytest.mark.usefixtures("autologin_user")
 def test_redirects_to_repo_summary_for_svn_repositories(
         backend_svn, app, action):
     denied_actions = ['show_all', 'index', 'create']
     for action in denied_actions:
         response = app.get(url(
             controller='pullrequests', action=action,
             repo_name=backend_svn.repo_name))
         assert response.status_int == 302
 
         # Not allowed, redirect to the summary
         redirected = response.follow()
         summary_url = url('summary_home', repo_name=backend_svn.repo_name)
 
         # URL adds leading slash and path doesn't have it
         assert redirected.req.path == summary_url
 
 
 def test_delete_comment_returns_404_if_comment_does_not_exist(pylonsapp):
     # TODO: johbo: Global import not possible because models.forms blows up
     from rhodecode.controllers.pullrequests import PullrequestsController
     controller = PullrequestsController()
     patcher = mock.patch(
         'rhodecode.model.db.BaseModel.get', return_value=None)
     with pytest.raises(HTTPNotFound), patcher:
         controller._delete_comment(1)