# Copyright (C) 2016-2024 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.apps._base import RepoAppView
from rhodecode.apps.repository.utils import get_default_reviewers_data
from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator
from rhodecode.lib.vcs.backends.base import Reference
from rhodecode.model.db import Repository

log = logging.getLogger(__name__)


class RepoReviewRulesView(RepoAppView):
    def load_default_context(self):
        c = self._get_local_tmpl_context()
        return c

    @LoginRequired()
    @HasRepoPermissionAnyDecorator("repository.admin")
    def repo_review_rules(self):
        c = self.load_default_context()
        c.active = "reviewers"

        return self._get_template_context(c)

    @LoginRequired()
    @HasRepoPermissionAnyDecorator("repository.read", "repository.write", "repository.admin")
    def repo_default_reviewers_data(self):
        self.load_default_context()

        request = self.request
        source_repo = self.db_repo
        source_repo_name = source_repo.repo_name
        target_repo_name = request.GET.get("target_repo", source_repo_name)
        target_repo = Repository.get_by_repo_name(target_repo_name)

        current_user = request.user.get_instance()

        source_commit_id = request.GET["source_ref"]
        source_type = request.GET["source_ref_type"]
        source_name = request.GET["source_ref_name"]

        target_commit_id = request.GET["target_ref"]
        target_type = request.GET["target_ref_type"]
        target_name = request.GET["target_ref_name"]

        try:
            review_data = get_default_reviewers_data(
                current_user,
                source_repo,
                Reference(source_type, source_name, source_commit_id),
                target_repo,
                Reference(target_type, target_name, target_commit_id),
            )
        except ValueError:
            # No common ancestor
            msg = "No Common ancestor found between target and source reference"
            log.exception(msg)
            return {"diff_info": {"error": msg}}

        return review_data
