{-# 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.EC2.DescribeVPNConnections
-- 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)
--
-- Describes one or more of your VPN connections.
--
-- For more information about VPN connections, see
-- <http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_VPN.html Adding a Hardware Virtual Private Gateway to Your VPC>
-- in the /Amazon Virtual Private Cloud User Guide/.
--
-- /See:/ <http://docs.aws.amazon.com/AWSEC2/latest/APIReference/ApiReference-query-DescribeVPNConnections.html AWS API Reference> for DescribeVPNConnections.
module Network.AWS.EC2.DescribeVPNConnections
    (
    -- * Creating a Request
      describeVPNConnections
    , DescribeVPNConnections
    -- * Request Lenses
    , dvpncFilters
    , dvpncVPNConnectionIds
    , dvpncDryRun

    -- * Destructuring the Response
    , describeVPNConnectionsResponse
    , DescribeVPNConnectionsResponse
    -- * Response Lenses
    , dvcrsVPNConnections
    , dvcrsStatus
    ) where

import           Network.AWS.EC2.Types
import           Network.AWS.EC2.Types.Product
import           Network.AWS.Prelude
import           Network.AWS.Request
import           Network.AWS.Response

-- | /See:/ 'describeVPNConnections' smart constructor.
data DescribeVPNConnections = DescribeVPNConnections'
    { _dvpncFilters          :: !(Maybe [Filter])
    , _dvpncVPNConnectionIds :: !(Maybe [Text])
    , _dvpncDryRun           :: !(Maybe Bool)
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeVPNConnections' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dvpncFilters'
--
-- * 'dvpncVPNConnectionIds'
--
-- * 'dvpncDryRun'
describeVPNConnections
    :: DescribeVPNConnections
describeVPNConnections =
    DescribeVPNConnections'
    { _dvpncFilters = Nothing
    , _dvpncVPNConnectionIds = Nothing
    , _dvpncDryRun = Nothing
    }

-- | One or more filters.
--
-- -   'customer-gateway-configuration' - The configuration information for
--     the customer gateway.
--
-- -   'customer-gateway-id' - The ID of a customer gateway associated with
--     the VPN connection.
--
-- -   'state' - The state of the VPN connection ('pending' | 'available' |
--     'deleting' | 'deleted').
--
-- -   'option.static-routes-only' - Indicates whether the connection has
--     static routes only. Used for devices that do not support Border
--     Gateway Protocol (BGP).
--
-- -   'route.destination-cidr-block' - The destination CIDR block. This
--     corresponds to the subnet used in a customer data center.
--
-- -   'bgp-asn' - The BGP Autonomous System Number (ASN) associated with a
--     BGP device.
--
-- -   'tag':/key/=/value/ - The key\/value combination of a tag assigned
--     to the resource.
--
-- -   'tag-key' - The key of a tag assigned to the resource. This filter
--     is independent of the 'tag-value' filter. For example, if you use
--     both the filter \"tag-key=Purpose\" and the filter \"tag-value=X\",
--     you get any resources assigned both the tag key Purpose (regardless
--     of what the tag\'s value is), and the tag value X (regardless of
--     what the tag\'s key is). If you want to list only resources where
--     Purpose is X, see the 'tag':/key/=/value/ filter.
--
-- -   'tag-value' - The value of a tag assigned to the resource. This
--     filter is independent of the 'tag-key' filter.
--
-- -   'type' - The type of VPN connection. Currently the only supported
--     type is 'ipsec.1'.
--
-- -   'vpn-connection-id' - The ID of the VPN connection.
--
-- -   'vpn-gateway-id' - The ID of a virtual private gateway associated
--     with the VPN connection.
--
dvpncFilters :: Lens' DescribeVPNConnections [Filter]
dvpncFilters = lens _dvpncFilters (\ s a -> s{_dvpncFilters = a}) . _Default . _Coerce;

-- | One or more VPN connection IDs.
--
-- Default: Describes your VPN connections.
dvpncVPNConnectionIds :: Lens' DescribeVPNConnections [Text]
dvpncVPNConnectionIds = lens _dvpncVPNConnectionIds (\ s a -> s{_dvpncVPNConnectionIds = a}) . _Default . _Coerce;

-- | Checks whether you have the required permissions for the action, without
-- actually making the request, and provides an error response. If you have
-- the required permissions, the error response is 'DryRunOperation'.
-- Otherwise, it is 'UnauthorizedOperation'.
dvpncDryRun :: Lens' DescribeVPNConnections (Maybe Bool)
dvpncDryRun = lens _dvpncDryRun (\ s a -> s{_dvpncDryRun = a});

instance AWSRequest DescribeVPNConnections where
        type Sv DescribeVPNConnections = EC2
        type Rs DescribeVPNConnections =
             DescribeVPNConnectionsResponse
        request = post
        response
          = receiveXML
              (\ s h x ->
                 DescribeVPNConnectionsResponse' <$>
                   (x .@? "vpnConnectionSet" .!@ mempty >>=
                      may (parseXMLList "item"))
                     <*> (pure (fromEnum s)))

instance ToHeaders DescribeVPNConnections where
        toHeaders = const mempty

instance ToPath DescribeVPNConnections where
        toPath = const "/"

instance ToQuery DescribeVPNConnections where
        toQuery DescribeVPNConnections'{..}
          = mconcat
              ["Action" =:
                 ("DescribeVpnConnections" :: ByteString),
               "Version" =: ("2015-04-15" :: ByteString),
               toQuery (toQueryList "Filter" <$> _dvpncFilters),
               toQuery
                 (toQueryList "VpnConnectionId" <$>
                    _dvpncVPNConnectionIds),
               "DryRun" =: _dvpncDryRun]

-- | /See:/ 'describeVPNConnectionsResponse' smart constructor.
data DescribeVPNConnectionsResponse = DescribeVPNConnectionsResponse'
    { _dvcrsVPNConnections :: !(Maybe [VPNConnection])
    , _dvcrsStatus         :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeVPNConnectionsResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dvcrsVPNConnections'
--
-- * 'dvcrsStatus'
describeVPNConnectionsResponse
    :: Int -- ^ 'dvcrsStatus'
    -> DescribeVPNConnectionsResponse
describeVPNConnectionsResponse pStatus_ =
    DescribeVPNConnectionsResponse'
    { _dvcrsVPNConnections = Nothing
    , _dvcrsStatus = pStatus_
    }

-- | Information about one or more VPN connections.
dvcrsVPNConnections :: Lens' DescribeVPNConnectionsResponse [VPNConnection]
dvcrsVPNConnections = lens _dvcrsVPNConnections (\ s a -> s{_dvcrsVPNConnections = a}) . _Default . _Coerce;

-- | The response status code.
dvcrsStatus :: Lens' DescribeVPNConnectionsResponse Int
dvcrsStatus = lens _dvcrsStatus (\ s a -> s{_dvcrsStatus = a});