#!/usr/bin/python3
# Request re-runs of autopkgtests for packages

from datetime import datetime
import os
import sys
import argparse
import json
import urllib.parse

import amqplib.client_0_8 as amqp

my_dir = os.path.dirname(os.path.realpath(sys.argv[0]))


def parse_args():
    '''Parse command line arguments'''

    parser = argparse.ArgumentParser()
    parser.add_argument('-c', '--config',
                        help='britney config file (default: britney.conf.ubuntu.<series>)')
    parser.add_argument('-s', '--series', required=True,
                        help='Distro series name (required).')
    parser.add_argument('-a', '--architecture', action='append', default=[],
                        help='Only run test(s) on given architecture name(s). '
                        'Can be specified multiple times (default: all).')
    parser.add_argument('--trigger', action='append', default=[],
                        metavar='SOURCE/VERSION',
                        help='Add triggering package to request. '
                        'Can be specified multiple times.')
    parser.add_argument('--ppa', metavar='LPUSER/PPANAME', action='append',
                        default=[],
                        help='Enable PPA for requested test(s). '
                        'Can be specified multiple times.')
    parser.add_argument('--env', metavar='KEY=VALUE', action='append',
                        default=[],
                        help='List of VAR=value strings. '
                        'This can be used to influence a test\'s behaviour '
                        'from a test request. '
                        'Can be specified multiple times.')
    parser.add_argument('--test-git',
                        metavar='URL [branchname]',
                        help='A single URL or URL branchname. '
                        'The test will be git cloned from that URL and ran '
                        'from the checkout. This will not build binary '
                        'packages from the branch and run tests against '
                        'those, the test dependencies will be taken from the '
                        'archive, or PPA if given. In this case the '
                        'srcpkgname will only be used for the result path in '
                        'swift and be irrelevant for the actual test.')
    parser.add_argument('--build-git',
                        metavar='URL [branchname]',
                        help='A single URL or URL branchname. '
                        'Like --test-git`, but will first build binary '
                        'packages from the branch and run tests against those.')
    parser.add_argument('--test-bzr',
                        help='A single URL. '
                        'The test will be checked out with bzr from that URL. '
                        'Otherwise this has the same behaviour as test-git.')
    parser.add_argument('--all-proposed', action='store_true',
                        help='Disable apt pinning and use all of -proposed')
    parser.add_argument('--bulk', action='store_true',
                        help='Mark this as a bulk (low priority) test where possible')
    parser.add_argument('package', nargs='+',
                        help='Source package name(s) whose tests to run.')
    args = parser.parse_args()

    if not args.trigger and not args.ppa:
        parser.error('One of --trigger or --ppa must be given')

    # verify syntax of triggers
    for t in args.trigger:
        try:
            (src, ver) = t.split('/')
        except ValueError:
            parser.error('Invalid trigger format "%s", must be "sourcepkg/version"' % t)

    # verify syntax of PPAs
    for t in args.ppa:
        try:
            (user, name) = t.split('/')
        except ValueError:
            parser.error('Invalid ppa format "%s", must be "lpuser/ppaname"' % t)

    return args


def parse_config(config_file):
    '''Parse config file (like britney.py)'''

    config = argparse.Namespace()
    with open(config_file) as f:
        for k, v in [r.split('=', 1) for r in f if '=' in r and not r.strip().startswith('#')]:
            k = k.strip()
            if not getattr(config, k.lower(), None):
                setattr(config, k.lower(), v.strip())
    return config


if __name__ == '__main__':
    args = parse_args()
    britney_conf = os.path.join(my_dir, 'britney.conf')
    if args.config:
        config = parse_config(args.config)
    elif os.path.exists(britney_conf + '.ubuntu.' + args.series):
        config = parse_config(britney_conf + '.ubuntu.' + args.series)
    else:
        config = parse_config(britney_conf)
    if not args.architecture:
        args.architecture = config.adt_arches.split()

    context = ''
    params = {}
    if args.bulk:
        context = 'huge-'
    if args.trigger:
        params['triggers'] = args.trigger
    if args.ppa:
        params['ppas'] = args.ppa
        context = 'ppa-'
    if args.env:
        params['env'] = args.env
    if args.test_git:
        params['test-git'] = args.test_git
        context = 'upstream-'
    elif args.build_git:
        params['build-git'] = args.build_git
        context = 'upstream-'
    if args.test_bzr:
        params['test-bzr'] = args.test_bzr
        context = 'upstream-'
    if args.all_proposed:
        params['all-proposed'] = True
    try:
        params['requester'] = os.environ['SUDO_USER']
    except KeyError:
        pass
    params['submit-time'] = datetime.strftime(datetime.utcnow(), '%Y-%m-%d %H:%M:%S%z')
    params = '\n' + json.dumps(params)

    creds = urllib.parse.urlsplit(config.adt_amqp, allow_fragments=False)
    assert creds.scheme == 'amqp'

    with amqp.Connection(creds.hostname, userid=creds.username,
                         password=creds.password) as amqp_con:
        with amqp_con.channel() as ch:
            for arch in args.architecture:
                queue = 'debci-%s%s-%s' % (context, args.series, arch)
                for pkg in args.package:
                    ch.basic_publish(amqp.Message(pkg + params,
                                                  delivery_mode=2),  # persistent
                                     routing_key=queue)