# Copyright (C) 2010-2023 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
import traceback

from rhodecode.model import meta

from rhodecode.lib import hooks_base
from rhodecode.lib.exceptions import HTTPLockedRC, HTTPBranchProtected
from rhodecode.lib.utils2 import AttributeDict

log = logging.getLogger(__name__)


class Hooks(object):
    """
    Exposes the hooks for remote callbacks
    """
    def __init__(self, request=None, log_prefix=''):
        self.log_prefix = log_prefix
        self.request = request

    def repo_size(self, extras):
        log.debug("%sCalled repo_size of %s object", self.log_prefix, self)
        return self._call_hook(hooks_base.repo_size, extras)

    def pre_pull(self, extras):
        log.debug("%sCalled pre_pull of %s object", self.log_prefix, self)
        return self._call_hook(hooks_base.pre_pull, extras)

    def post_pull(self, extras):
        log.debug("%sCalled post_pull of %s object", self.log_prefix, self)
        return self._call_hook(hooks_base.post_pull, extras)

    def pre_push(self, extras):
        log.debug("%sCalled pre_push of %s object", self.log_prefix, self)
        return self._call_hook(hooks_base.pre_push, extras)

    def post_push(self, extras):
        log.debug("%sCalled post_push of %s object", self.log_prefix, self)
        return self._call_hook(hooks_base.post_push, extras)

    def _call_hook(self, hook, extras):
        extras = AttributeDict(extras)
        _server_url = extras['server_url']

        extras.request = self.request

        try:
            result = hook(extras)
            if result is None:
                raise Exception(f'Failed to obtain hook result from func: {hook}')
        except HTTPBranchProtected as handled_error:
            # Those special cases don't need error reporting. It's a case of
            # locked repo or protected branch
            result = AttributeDict({
                'status': handled_error.code,
                'output': handled_error.explanation
            })
        except (HTTPLockedRC, Exception) as error:
            # locked needs different handling since we need to also
            # handle PULL operations
            exc_tb = ''
            if not isinstance(error, HTTPLockedRC):
                exc_tb = traceback.format_exc()
                log.exception('%sException when handling hook %s', self.log_prefix, hook)
            error_args = error.args
            return {
                'status': 128,
                'output': '',
                'exception': type(error).__name__,
                'exception_traceback': exc_tb,
                'exception_args': error_args,
            }
        finally:
            meta.Session.remove()

        log.debug('%sGot hook call response %s', self.log_prefix, result)
        return {
            'status': result.status,
            'output': result.output,
        }

    def __enter__(self):
        return self

    def __exit__(self, exc_type, exc_val, exc_tb):
        pass