# Copyright (c) 2013 Doug Hellmann
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from __future__ import print_function

import argparse
import subprocess
import sys
import webbrowser


def main():
    parser = argparse.ArgumentParser(
        description='Show the OpenStack job logs for a commit in a browser',
    )
    parser.add_argument(
        '--base',
        action='store',
        default='http://logs.openstack.org',
        help='base URL, defaults to %(default)s',
    )
    parser.add_argument(
        '--url',
        action='store_true',
        default=False,
        help='show the URL but do not open it',
    )
    parser.add_argument(
        'ref',
        nargs='?',
        default='HEAD',
        help='the git reference, tag, or commit, defaults to %(default)s',
    )
    args = parser.parse_args()

    ref = args.ref
    try:
        ref_hash = subprocess.check_output(
            ['git', 'show-ref', '-s', ref]
        ).rstrip()
    except subprocess.CalledProcessError:
        # Maybe they gave us a commit id
        try:
            ref_hash = subprocess.check_output(
                ['git', 'show', '--pretty=format:%H', '--quiet', ref]
            ).rstrip()
        except subprocess.CalledProcessError:
            sys.stderr.write('Could not get hash for ref %r\n' % ref)
            return 1

    ref_hash_str = ref_hash.decode('utf8')
    url = '%s/%s/%s/' % (args.base, ref_hash_str[:2], ref_hash_str)
    if args.url:
        print(url)
    else:
        webbrowser.open(url)
    return 0


if __name__ == '__main__':
    sys.exit(main())