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# Author: Neil Soman neil@eucalyptus.com
#         Mitch Garnaat mgarnaat@eucalyptus.com

import euca2ools.commands.eucacommand
from boto.roboto.param import Param

class DescribeAvailabilityZones(euca2ools.commands.eucacommand.EucaCommand):

    APIVersion = '2010-08-31'
    Description = 'Shows information about availability zones.'
    Args = [Param(name='zone', ptype='string',
                  cardinality='+', optional=True)]
    Filters = [Param(name='message', ptype='string',
                     doc='Message giving information about the Availability Zone.'),
               Param(name='region-name', ptype='string',
                     doc='Region the Availability Zone is in (e.g., us-east-1).'),
               Param(name='state', ptype='string',
                     doc='State of the Availability Zone'),
               Param(name='zone-name', ptype='string',
                     doc='Name of the zone.')]
    
    def display_zones(self, zones):
        for zone in zones:
            zone_string = '%s\t%s' % (zone.name, zone.state)
            print 'AVAILABILITYZONE\t%s' % zone_string

    def main(self):
        conn = self.make_connection_cli()
        return self.make_request_cli(conn, 'get_all_zones',
                                      zones=self.zone)

    def main_cli(self):
        zones = self.main()
        self.display_zones(zones)