Synnefo

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from optparse import make_option

from django.db import transaction

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

from astakos.im.functions import (terminate, suspend, unsuspend,

                                  reinstate, check_expiration,

                                  approve_application, deny_application)

class Command(BaseCommand):

    help = "Manage projects and applications"

    option_list = BaseCommand.option_list + (

        make_option('--approve',

                    dest='approve',

                    metavar='<application id>',

                    help="Approve a project application"),

        make_option('--deny',

                    dest='deny',

                    metavar='<application id>',

                    help="Deny a project application"),

        make_option('--terminate',

                    dest='terminate',

                    metavar='<project id>',

                    help="Terminate a project"),

        make_option('--suspend',

                    dest='suspend',

                    metavar='<project id>',

                    help="Suspend a project"),

        make_option('--unsuspend',

                    dest='unsuspend',

                    metavar='<project id>',

                    help="Resume a suspended project"),

        make_option('--reinstate',

                    dest='reinstate',

                    metavar='<project id>',

                    help=("Resume a terminated project; this will fail if its "

                          "name has been reserved by another project")),

        make_option('--check-expired',

                    action='store_true',

                    dest='check_expired',

                    default=False,

                    help="Check projects for expiration"),

        make_option('--terminate-expired',

                    action='store_true',

                    dest='terminate_expired',

                    default=False,

                    help="Terminate all expired projects"),

        make_option('--message', '-m',

                    dest='message',

                    metavar='<msg>',

                    help=("Specify reason of action, "

                          "e.g. when denying a project")),

    )

    @transaction.commit_on_success

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

        message = options['message']

        actions = {

            'terminate': terminate,

            'reinstate': reinstate,

            'unsuspend': unsuspend,

            'suspend': suspend,

            'approve': approve_application,

            'deny': lambda a: deny_application(a, reason=message),

            'check_expired': lambda _: self.expire(execute=False),

            'terminate_expired': lambda _: self.expire(execute=True),

        }

        opts = [(key, value)

                for (key, value) in options.items()

                if key in actions and value]

        if len(opts) != 1:

            raise CommandError("Specify exactly one operation.")

        key, value = opts[0]

        action = actions[key]

        try:

            action(value)

        except BaseException as e:

            raise CommandError(e)

    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.stderr.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.stderr.write(line + '\n')

            sep = '-' * len(line)

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

            for project in projects:

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

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

            if execute:

                self.stderr.write('%d projects have been terminated.\n' % (

                    length,))

    def expire(self, execute=False):

        projects = check_expiration(execute=execute)

        self.print_expired(projects, execute)