Synnefo

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from optparse import make_option

from django.core.management.base import BaseCommand, CommandError

from django.db import transaction

from astakos.im.functions import check_expiration

@transaction.commit_manually

class Command(BaseCommand):

    help = "Perform administration checks on projects"

    option_list = BaseCommand.option_list + (

        make_option('--expire',

                    action='store_true',

                    dest='expire',

                    default=False,

                    help="Check projects for expiration"),

        make_option('--execute',

                    action='store_true',

                    dest='execute',

                    default=False,

                    help="Perform the actual operation"),

    )

    def print_expired(self, projects, execute):

        length = len(projects)

        if length == 0:

            s = 'No expired projects.\n'

        elif length == 1:

            s = '1 expired project:\n'

        else:

            s = '%d expired projects:\n' %(length,)

        self.stdout.write(s)

        if length > 0:

            labels = ('Project', 'Name', 'Status', 'Expiration date')

            columns = (10, 30, 14, 30)

            line = ' '.join(l.rjust(w) for l, w in zip(labels, columns))

            self.stdout.write(line + '\n')

            sep = '-' * len(line)

            self.stdout.write(sep + '\n')

            for project in projects:

                line = ' '.join(f.rjust(w) for f, w in zip(project, columns))

                self.stdout.write(line.encode('utf8') + '\n')

            if execute:

                self.stdout.write('%d projects have been terminated.\n' %(length,))

    def handle(self, *args, **options):

        execute = options['execute']

        try:

            if options['expire']:

                projects = check_expiration(execute=execute)

                self.print_expired(projects, execute)

        except BaseException as e:

            transaction.rollback()

            raise CommandError(e)

        else:

            transaction.commit()