# Copyright 2014 Eucalyptus Systems, Inc.
#
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# with or without modification, are permitted provided that the following
# conditions are met:
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#   this list of conditions and the following disclaimer.
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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from requestbuilder import Arg, MutuallyExclusiveArgList

from euca2ools.commands.ec2 import EC2Request


class DescribeSnapshotAttribute(EC2Request):
    DESCRIPTION = 'Show information about an attribute of a snapshot'
    ARGS = [Arg('SnapshotId', metavar='SNAPSHOT', help='snapshot to describe'),
            MutuallyExclusiveArgList(
                Arg('-c', '--create-volume-permission', dest='Attribute',
                    action='store_const', const='createVolumePermission',
                    help='display who can create volumes from the snapshot'),
                Arg('-p', '--product-codes', dest='Attribute',
                    action='store_const', const='productCodes',
                    help='list associated product codes'))
            .required()]
    LIST_TAGS = ['createVolumePermission', 'productCodes']

    def print_result(self, result):
        snapshot_id = result.get('snapshotId')
        for perm in result.get('createVolumePermission', []):
            for (entity_type, entity_name) in perm.items():
                print self.tabify(('createVolumePermission', snapshot_id,
                                   entity_type, entity_name))
        for code in result.get('productCodes', []):
            if 'type' in code:
                code_str = '[{0}: {1}]'.format(code['type'],
                                               code.get('productCode'))
            else:
                code_str = code.get('productCode')
            print self.tabify(('productCodes', snapshot_id, 'productCode',
                               code_str))