import argparse
import errno
import itertools
import logging
import os
import subprocess
import sys

log = logging.getLogger(__name__)

def main():
    parser = argparse.ArgumentParser(description="""
Run a suite of ceph integration tests.

A suite is a directory containing a subdirectory collections/
containing collections.

A collection is a directory containing facets.

A facet is a directory containing config snippets.

Running the suite means running teuthology for every collection.

Running a collection means running teuthology for every configuration
combination generated by taking one config snippet from each facet.

Any config files passed on the command line will be used for every
combination, and will override anything in the suite.
""")
    parser.add_argument(
        '-v', '--verbose',
        action='store_true', default=None,
        help='be more verbose',
        )
    parser.add_argument(
        '--suite',
        metavar='DIR',
        help='suite of tests to run',
        required=True,
        )
    parser.add_argument(
        '--owner',
        help='job owner',
        )
    parser.add_argument(
        '--name',
        help='name for this suite',
        required=True,
        )
    parser.add_argument(
        'config',
        metavar='CONFFILE',
        nargs='*',
        default=[],
        help='config file to read',
        )

    args = parser.parse_args()

    loglevel = logging.INFO
    if args.verbose:
        loglevel = logging.DEBUG

    logging.basicConfig(
        level=loglevel,
        )

    collection_dir = os.path.join(args.suite,'collections')
    print collection_dir
    if os.path.exists(collection_dir) and os.path.isdir(collection_dir):
        collections = [
            (os.path.join(collection_dir, f), f)
            for f in sorted(os.listdir(collection_dir))
            if not f.startswith('.')
            and os.path.isdir(os.path.join(collection_dir, f))
            ]
    else:
        # degenerate case; 'suite' is actually a single collection
        collections = [(args.suite, 'none')]

    for collection, collection_name in sorted(collections):
        log.info('Collection %s in %s' % (collection_name, collection))
        facets = [
            f for f in sorted(os.listdir(collection))
            if not f.startswith('.')
            and os.path.isdir(os.path.join(collection, f))
            ]
        facet_configs = (
            [(f, name, os.path.join(collection, f, name))
             for name in sorted(os.listdir(os.path.join(collection, f)))
             if not name.startswith('.')
             and name.endswith('.yaml')
             ]
            for f in facets
            )
        for configs in itertools.product(*facet_configs):
            description = 'collection:%s ' % (collection_name);
            description += ' '.join('{facet}:{name}'.format(
                    facet=facet, name=name)
                                 for facet, name, path in configs)
            log.info(
                'Running teuthology-schedule with facets %s', description
                )
            arg = [
                os.path.join(os.path.dirname(sys.argv[0]), 'teuthology-schedule'),
                ]

            if args.verbose:
                arg.append('-v')

            if args.owner:
                arg.extend(['--owner', args.owner])

            arg.extend([
                    '--name', args.name,
                    '--description', description,
                    '--',
                    ])

            arg.extend(path for facet, name, path in configs)
            arg.extend(args.config)
            print arg
            subprocess.check_call(
                args=arg,
                )

def ls():
    parser = argparse.ArgumentParser(description='List teuthology job results')
    parser.add_argument(
        '--archive-dir',
        metavar='DIR',
        help='path under which to archive results',
        required=True,
        )
    args = parser.parse_args()

    import yaml

    for j in sorted(os.listdir(args.archive_dir)):
        if j.startswith('.'):
            continue

        summary = {}
        try:
            with file('%s/%s/summary.yaml' % (args.archive_dir, j)) as f:
                g = yaml.safe_load_all(f)
                for new in g:
                    summary.update(new)
        except IOError, e:
            if e.errno == errno.ENOENT:
                print "%s (no summary.yaml)" % j
                continue
            else:
                raise

        print "{job} {success} {owner} {desc}".format(
            job=j,
            owner=summary.get('owner', '-'),
            desc=summary.get('description', '-'),
            success='pass' if summary['success'] else 'FAIL',
            )