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import warnings

from pylons import tmpl_context as c

from allura import model as M

from . import base


class RecloneRepoCommand(base.Command):
    min_args = 3
    max_args = None
    usage = '<ini file> [-n nbhd] <project_shortname> <mount_point>'
    summary = 'Reinitialize a repo from the original clone source'
    parser = base.Command.standard_parser(verbose=True)
    parser.add_option('-n', '--nbhd', dest='nbhd', type='string', default='p',
                      help='neighborhood prefix (default: p)')

    def command(self):
        self._setup()
        self._load_objects()
        self._clone_repo()

    def _setup(self):
        '''Perform basic setup, suppressing superfluous warnings.'''
        with warnings.catch_warnings():
            try:
                from sqlalchemy import exc
            except ImportError:
                pass
            else:
                warnings.simplefilter("ignore", category=exc.SAWarning)
            self.basic_setup()

    def _load_objects(self):
        '''Load objects to be operated on.'''
        c.user = M.User.query.get(username='sfrobot')
        nbhd = M.Neighborhood.query.get(url_prefix='/%s/' % self.options.nbhd)
        assert nbhd, 'Neighborhood with prefix %s not found' % self.options.nbhd
        c.project = M.Project.query.get(
            shortname=self.args[1], neighborhood_id=nbhd._id)
        assert c.project, 'Project with shortname %s not found in neighborhood %s' % (
            self.args[1], nbhd.name)
        c.app = c.project.app_instance(self.args[2])
        assert c.app, 'Mount point %s not found on project %s' % (
            self.args[2], c.project.shortname)

    def _clone_repo(self):
        '''Initiate the repo clone.'''
        source_url = c.app.config.options.get('init_from_url')
        source_path = c.app.config.options.get('init_from_path')
        assert source_url or source_path, '%s does not appear to be a cloned repo' % c.app
        c.app.repo.init_as_clone(source_path, None, source_url)