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from optparse import make_option

from django.core.management.base import BaseCommand, CommandError
from synnefo.management.common import get_vm

from synnefo.db.models import VirtualMachine


class Command(BaseCommand):
    args = "<server ID>"
    help = "Modify a server"

    option_list = BaseCommand.option_list + (
        make_option('--name',
            dest='name',
            metavar='NAME',
            help="Set server's name"),
        make_option('--owner',
            dest='owner',
            metavar='USER_ID',
            help="Set server's owner"),
        make_option('--state',
            dest='state',
            metavar='STATE',
            help="Set server's state"),
        make_option('--set-deleted',
            action='store_true',
            dest='deleted',
            help="Mark a server as deleted"),
        make_option('--set-undeleted',
            action='store_true',
            dest='undeleted',
            help="Mark a server as not deleted"),
        make_option('--set-suspended',
            action='store_true',
            dest='suspended',
            help="Mark a server as suspended"),
        make_option('--set-unsuspended',
            action='store_true',
            dest='unsuspended',
            help="Mark a server as not suspended")
        )

    def handle(self, *args, **options):
        if len(args) != 1:
            raise CommandError("Please provide a server ID")

        server = get_vm(args[0])

        name = options.get('name')
        if name is not None:
            server.name = name

        owner = options.get('owner')
        if owner is not None:
            server.userid = owner

        state = options.get('state')
        if state is not None:
            allowed = [x[0] for x in VirtualMachine.OPER_STATES]
            if state not in allowed:
                msg = "Invalid state, must be one of %s" % ', '.join(allowed)
                raise CommandError(msg)
            server.operstate = state

        if options.get('deleted'):
            server.deleted = True
        elif options.get('undeleted'):
            server.deleted = False

        if options.get('suspended'):
            server.suspended = True
        elif options.get('unsuspended'):
            server.suspended = False

        server.save()