# This file is part of Buildbot.  Buildbot is free software: you can
# redistribute it and/or modify it under the terms of the GNU General Public
# License as published by the Free Software Foundation, version 2.
#
# 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 General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 51
# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Copyright Buildbot Team Members

# note: this file is based on github.py

import re

from dateutil.parser import parse as dateparse
from twisted.python import log

try:
    import json
    assert json
except ImportError:
    import simplejson as json


def getChanges(request, options=None):
    payload = json.loads(request.args['payload'][0])
    user = payload['repository']['owner']['name']
    repo = payload['repository']['name']
    repo_url = payload['repository']['url']
    project = payload['project']['name']

    changes = process_change(payload, user, repo, repo_url, project)
    log.msg("Received %s changes from gitorious" % len(changes))
    return (changes, 'git')


def process_change(payload, user, repo, repo_url, project):
    changes = []
    newrev = payload['after']

    branch = payload['ref']
    if re.match(r"^0*$", newrev):
        log.msg("Branch `%s' deleted, ignoring" % branch)
        return []
    else:
        for commit in payload['commits']:
            files = []
            # Gitorious doesn't send these, maybe later
            # if 'added' in commit:
            #     files.extend(commit['added'])
            # if 'modified' in commit:
            #     files.extend(commit['modified'])
            # if 'removed' in commit:
            #     files.extend(commit['removed'])
            when_timestamp = dateparse(commit['timestamp'])

            log.msg("New revision: %s" % commit['id'][:8])
            changes.append({
                'author': '%s <%s>' % (commit['author']['name'],
                                       commit['author']['email']),
                'files': files,
                'comments': commit['message'],
                'revision': commit['id'],
                'when_timestamp': when_timestamp,
                'branch': branch,
                'revlink': commit['url'],
                'repository': repo_url,
                'project': project
            })

    return changes
