{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DeriveGeneric      #-}
{-# LANGUAGE OverloadedStrings  #-}
{-# LANGUAGE RecordWildCards    #-}
{-# LANGUAGE TypeFamilies       #-}

{-# OPTIONS_GHC -fno-warn-unused-imports #-}
{-# OPTIONS_GHC -fno-warn-unused-binds   #-}
{-# OPTIONS_GHC -fno-warn-unused-matches #-}

-- Derived from AWS service descriptions, licensed under Apache 2.0.

-- |
-- Module      : Network.AWS.DirectConnect.DescribeVirtualGateways
-- Copyright   : (c) 2013-2015 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay <brendan.g.hay@gmail.com>
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Returns a list of virtual private gateways owned by the AWS account.
--
-- You can create one or more AWS Direct Connect private virtual interfaces
-- linking to a virtual private gateway. A virtual private gateway can be
-- managed via Amazon Virtual Private Cloud (VPC) console or the
-- <http://docs.aws.amazon.com/AWSEC2/latest/APIReference/ApiReference-query-CreateVpnGateway.html EC2 CreateVpnGateway>
-- action.
--
-- /See:/ <http://docs.aws.amazon.com/directconnect/latest/APIReference/API_DescribeVirtualGateways.html AWS API Reference> for DescribeVirtualGateways.
module Network.AWS.DirectConnect.DescribeVirtualGateways
    (
    -- * Creating a Request
      describeVirtualGateways
    , DescribeVirtualGateways

    -- * Destructuring the Response
    , describeVirtualGatewaysResponse
    , DescribeVirtualGatewaysResponse
    -- * Response Lenses
    , dvgrsVirtualGateways
    , dvgrsResponseStatus
    ) where

import           Network.AWS.DirectConnect.Types
import           Network.AWS.DirectConnect.Types.Product
import           Network.AWS.Prelude
import           Network.AWS.Request
import           Network.AWS.Response

-- | /See:/ 'describeVirtualGateways' smart constructor.
data DescribeVirtualGateways =
    DescribeVirtualGateways'
    deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeVirtualGateways' with the minimum fields required to make a request.
--
describeVirtualGateways
    :: DescribeVirtualGateways
describeVirtualGateways = DescribeVirtualGateways'

instance AWSRequest DescribeVirtualGateways where
        type Rs DescribeVirtualGateways =
             DescribeVirtualGatewaysResponse
        request = postJSON directConnect
        response
          = receiveJSON
              (\ s h x ->
                 DescribeVirtualGatewaysResponse' <$>
                   (x .?> "virtualGateways" .!@ mempty) <*>
                     (pure (fromEnum s)))

instance ToHeaders DescribeVirtualGateways where
        toHeaders
          = const
              (mconcat
                 ["X-Amz-Target" =#
                    ("OvertureService.DescribeVirtualGateways" ::
                       ByteString),
                  "Content-Type" =#
                    ("application/x-amz-json-1.1" :: ByteString)])

instance ToJSON DescribeVirtualGateways where
        toJSON = const (Object mempty)

instance ToPath DescribeVirtualGateways where
        toPath = const "/"

instance ToQuery DescribeVirtualGateways where
        toQuery = const mempty

-- | A structure containing a list of virtual private gateways.
--
-- /See:/ 'describeVirtualGatewaysResponse' smart constructor.
data DescribeVirtualGatewaysResponse = DescribeVirtualGatewaysResponse'
    { _dvgrsVirtualGateways :: !(Maybe [VirtualGateway])
    , _dvgrsResponseStatus  :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeVirtualGatewaysResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dvgrsVirtualGateways'
--
-- * 'dvgrsResponseStatus'
describeVirtualGatewaysResponse
    :: Int -- ^ 'dvgrsResponseStatus'
    -> DescribeVirtualGatewaysResponse
describeVirtualGatewaysResponse pResponseStatus_ =
    DescribeVirtualGatewaysResponse'
    { _dvgrsVirtualGateways = Nothing
    , _dvgrsResponseStatus = pResponseStatus_
    }

-- | A list of virtual private gateways.
dvgrsVirtualGateways :: Lens' DescribeVirtualGatewaysResponse [VirtualGateway]
dvgrsVirtualGateways = lens _dvgrsVirtualGateways (\ s a -> s{_dvgrsVirtualGateways = a}) . _Default . _Coerce;

-- | The response status code.
dvgrsResponseStatus :: Lens' DescribeVirtualGatewaysResponse Int
dvgrsResponseStatus = lens _dvgrsResponseStatus (\ s a -> s{_dvgrsResponseStatus = a});