# Copyright (c) 2013-2016 Hewlett Packard Enterprise Development LP
#
# Redistribution and use of this software in source and binary forms,
# with or without modification, are permitted provided that the following
# conditions are met:
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#   Redistributions of source code must retain the above copyright notice,
#   this list of conditions and the following disclaimer.
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#   Redistributions in binary form must reproduce the above copyright
#   notice, this list of conditions and the following disclaimer in the
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#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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import os
import sys

from requestbuilder import Arg
import requestbuilder.auth.aws
import requestbuilder.service
import requestbuilder.request

from euca2ools.commands import Euca2ools
from euca2ools.exceptions import AWSError
from euca2ools.util import strip_response_metadata, add_fake_region_name


class ELB(requestbuilder.service.BaseService):
    NAME = 'elasticloadbalancing'
    DESCRIPTION = 'Load balancing service'
    API_VERSION = '2012-06-01'
    REGION_ENVVAR = ('EUCA_DEFAULT_REGION', 'AWS_DEFAULT_REGION')
    URL_ENVVAR = 'AWS_ELB_URL'

    ARGS = [Arg('-U', '--url', metavar='URL',
                help='load balancing service endpoint URL')]

    def configure(self):
        requestbuilder.service.BaseService.configure(self)
        add_fake_region_name(self)

    # pylint: disable=no-self-use
    def handle_http_error(self, response):
        raise AWSError(response)
    # pylint: enable=no-self-use


class ELBRequest(requestbuilder.request.AWSQueryRequest):
    SUITE = Euca2ools
    SERVICE_CLASS = ELB
    AUTH_CLASS = requestbuilder.auth.aws.HmacV4Auth
    METHOD = 'POST'

    def parse_response(self, response):
        response_dict = requestbuilder.request.AWSQueryRequest.parse_response(
            self, response)
        return strip_response_metadata(response_dict)
