# Copyright (C) 2016-2016  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/

from marshmallow import Schema, fields

from rhodecode.model.db import User, Repository, Session
from rhodecode.events.base import RhodecodeEvent


def get_repo_url(repo):
    from rhodecode.model.repo import RepoModel
    return RepoModel().get_url(repo)


class RepositorySchema(Schema):
    """
    Marshmallow schema for a repository
    """
    repo_id = fields.Integer()
    repo_name = fields.Str()
    url = fields.Function(get_repo_url)


class RepoEventSchema(RhodecodeEvent.MarshmallowSchema):
    """
    Marshmallow schema for a repository event
    """
    repo = fields.Nested(RepositorySchema)


class RepoEvent(RhodecodeEvent):
    """
    Base class for events acting on a repository.

    :param repo: a :class:`Repository` instance
    """
    MarshmallowSchema = RepoEventSchema

    def __init__(self, repo):
        super(RepoEvent, self).__init__()
        self.repo = repo


class RepoPreCreateEvent(RepoEvent):
    """
    An instance of this class is emitted as an :term:`event` before a repo is
    created.
    """
    name = 'repo-pre-create'


class RepoCreatedEvent(RepoEvent):
    """
    An instance of this class is emitted as an :term:`event` whenever a repo is
    created.
    """
    name = 'repo-created'


class RepoPreDeleteEvent(RepoEvent):
    """
    An instance of this class is emitted as an :term:`event` whenever a repo is
    created.
    """
    name = 'repo-pre-delete'


class RepoDeletedEvent(RepoEvent):
    """
    An instance of this class is emitted as an :term:`event` whenever a repo is
    created.
    """
    name = 'repo-deleted'


class RepoVCSEvent(RepoEvent):
    """
    Base class for events triggered by the VCS
    """
    def __init__(self, repo_name, extras):
        self.repo = Repository.get_by_repo_name(repo_name)
        if not self.repo:
            raise Exception('repo by this name %s does not exist' % repo_name)
        self.extras = extras
        super(RepoVCSEvent, self).__init__(self.repo)

    @property
    def actor(self):
        if self.extras.get('username'):
            return User.get_by_username(self.extras['username'])

    @property
    def actor_ip(self):
        if self.extras.get('ip'):
            return self.extras['ip']


class RepoPrePullEvent(RepoVCSEvent):
    """
    An instance of this class is emitted as an :term:`event` before commits
    are pulled from a repo.
    """
    name = 'repo-pre-pull'


class RepoPullEvent(RepoVCSEvent):
    """
    An instance of this class is emitted as an :term:`event` after commits
    are pulled from a repo.
    """
    name = 'repo-pull'


class RepoPrePushEvent(RepoVCSEvent):
    """
    An instance of this class is emitted as an :term:`event` before commits
    are pushed to a repo.
    """
    name = 'repo-pre-push'


class RepoPushEvent(RepoVCSEvent):
    """
    An instance of this class is emitted as an :term:`event` after commits
    are pushed to a repo.

    :param extras: (optional) dict of data from proxied VCS actions
    """
    name = 'repo-push'

    def __init__(self, repo_name, pushed_commit_ids, extras):
        super(RepoPushEvent, self).__init__(repo_name, extras)
        self.pushed_commit_ids = pushed_commit_ids