# Copyright (C) 2012-2023 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 import events
from rhodecode.integrations.types.base import CommitParsingDataHandler, UrlTmpl


log = logging.getLogger(__name__)


class WebhookDataHandler(CommitParsingDataHandler):
    name = 'webhook'

    def __init__(self, template_url, headers):
        self.template_url = template_url
        self.headers = headers

    def get_base_parsed_template(self, data):
        """
        initially parses the passed in template with some common variables
        available on ALL calls
        """
        # note: make sure to update the `WEBHOOK_URL_VARS` if this changes
        common_vars = {
            'repo_name': data['repo']['repo_name'],
            'repo_type': data['repo']['repo_type'],
            'repo_id': data['repo']['repo_id'],
            'repo_url': data['repo']['url'],
            'username': data['actor']['username'],
            'user_id': data['actor']['user_id'],
            'event_name': data['name']
        }

        extra_vars = {}
        for extra_key, extra_val in data['repo']['extra_fields'].items():
            extra_vars[f'extra__{extra_key}'] = extra_val
        common_vars.update(extra_vars)

        template_url = self.template_url.replace('${extra:', '${extra__')
        for k, v in common_vars.items():
            template_url = UrlTmpl(template_url).safe_substitute(**{k: v})
        return template_url

    def repo_push_event_handler(self, event, data):
        url = self.get_base_parsed_template(data)
        url_calls = []

        branches_commits = self.aggregate_branch_data(
            data['push']['branches'], data['push']['commits'])
        if '${branch}' in url or '${branch_head}' in url or '${commit_id}' in url:
            # call it multiple times, for each branch if used in variables
            for branch, commit_ids in branches_commits.items():
                branch_url = UrlTmpl(url).safe_substitute(branch=branch)

                if '${branch_head}' in branch_url:
                    # last commit in the aggregate is the head of the branch
                    branch_head = commit_ids['branch_head']
                    branch_url = UrlTmpl(branch_url).safe_substitute(branch_head=branch_head)

                # call further down for each commit if used
                if '${commit_id}' in branch_url:
                    for commit_data in commit_ids['commits']:
                        commit_id = commit_data['raw_id']
                        commit_url = UrlTmpl(branch_url).safe_substitute(commit_id=commit_id)
                        # register per-commit call
                        log.debug(
                            'register %s call(%s) to url %s',
                            self.name, event, commit_url)
                        url_calls.append(
                            (commit_url, self.headers, data))

                else:
                    # register per-branch call
                    log.debug('register %s call(%s) to url %s',
                              self.name, event, branch_url)
                    url_calls.append((branch_url, self.headers, data))

        else:
            log.debug('register %s call(%s) to url %s', self.name, event, url)
            url_calls.append((url, self.headers, data))

        return url_calls

    def repo_commit_comment_handler(self, event, data):
        url = self.get_base_parsed_template(data)
        log.debug('register %s call(%s) to url %s', self.name, event, url)
        comment_vars = [
            ('commit_comment_id', data['comment']['comment_id']),
            ('commit_comment_text', data['comment']['comment_text']),
            ('commit_comment_type', data['comment']['comment_type']),

            ('commit_comment_f_path', data['comment']['comment_f_path']),
            ('commit_comment_line_no', data['comment']['comment_line_no']),

            ('commit_comment_commit_id', data['commit']['commit_id']),
            ('commit_comment_commit_branch', data['commit']['commit_branch']),
            ('commit_comment_commit_message', data['commit']['commit_message']),
        ]
        for k, v in comment_vars:
            url = UrlTmpl(url).safe_substitute(**{k: v})

        return [(url, self.headers, data)]

    def repo_commit_comment_edit_handler(self, event, data):
        url = self.get_base_parsed_template(data)
        log.debug('register %s call(%s) to url %s', self.name, event, url)
        comment_vars = [
            ('commit_comment_id', data['comment']['comment_id']),
            ('commit_comment_text', data['comment']['comment_text']),
            ('commit_comment_type', data['comment']['comment_type']),

            ('commit_comment_f_path', data['comment']['comment_f_path']),
            ('commit_comment_line_no', data['comment']['comment_line_no']),

            ('commit_comment_commit_id', data['commit']['commit_id']),
            ('commit_comment_commit_branch', data['commit']['commit_branch']),
            ('commit_comment_commit_message', data['commit']['commit_message']),
        ]
        for k, v in comment_vars:
            url = UrlTmpl(url).safe_substitute(**{k: v})

        return [(url, self.headers, data)]

    def repo_create_event_handler(self, event, data):
        url = self.get_base_parsed_template(data)
        log.debug('register %s call(%s) to url %s', self.name, event, url)
        return [(url, self.headers, data)]

    def pull_request_event_handler(self, event, data):
        url = self.get_base_parsed_template(data)
        log.debug('register %s call(%s) to url %s', self.name, event, url)
        pr_vars = [
            ('pull_request_id', data['pullrequest']['pull_request_id']),
            ('pull_request_title', data['pullrequest']['title']),
            ('pull_request_url', data['pullrequest']['url']),
            ('pull_request_shadow_url', data['pullrequest']['shadow_url']),
            ('pull_request_commits_uid', data['pullrequest']['commits_uid']),
        ]
        for k, v in pr_vars:
            url = UrlTmpl(url).safe_substitute(**{k: v})

        return [(url, self.headers, data)]

    def __call__(self, event, data):

        if isinstance(event, events.RepoPushEvent):
            return self.repo_push_event_handler(event, data)
        elif isinstance(event, events.RepoCreateEvent):
            return self.repo_create_event_handler(event, data)
        elif isinstance(event, events.RepoCommitCommentEvent):
            return self.repo_commit_comment_handler(event, data)
        elif isinstance(event, events.RepoCommitCommentEditEvent):
            return self.repo_commit_comment_edit_handler(event, data)
        elif isinstance(event, events.PullRequestEvent):
            return self.pull_request_event_handler(event, data)
        else:
            raise ValueError(
                f'event type `{event.__class__}` has no handler defined')