{-# 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.DescribeVPCEndpoints
-- Copyright   : (c) 2013-2016 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 VPC endpoints.
module Network.AWS.EC2.DescribeVPCEndpoints
    (
    -- * Creating a Request
      describeVPCEndpoints
    , DescribeVPCEndpoints
    -- * Request Lenses
    , dvpceFilters
    , dvpceNextToken
    , dvpceVPCEndpointIds
    , dvpceDryRun
    , dvpceMaxResults

    -- * Destructuring the Response
    , describeVPCEndpointsResponse
    , DescribeVPCEndpointsResponse
    -- * Response Lenses
    , dvpcersNextToken
    , dvpcersVPCEndpoints
    , dvpcersResponseStatus
    ) where

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

-- | Contains the parameters for DescribeVpcEndpoints.
--
-- /See:/ 'describeVPCEndpoints' smart constructor.
data DescribeVPCEndpoints = DescribeVPCEndpoints'
    { _dvpceFilters        :: !(Maybe [Filter])
    , _dvpceNextToken      :: !(Maybe Text)
    , _dvpceVPCEndpointIds :: !(Maybe [Text])
    , _dvpceDryRun         :: !(Maybe Bool)
    , _dvpceMaxResults     :: !(Maybe Int)
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeVPCEndpoints' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dvpceFilters'
--
-- * 'dvpceNextToken'
--
-- * 'dvpceVPCEndpointIds'
--
-- * 'dvpceDryRun'
--
-- * 'dvpceMaxResults'
describeVPCEndpoints
    :: DescribeVPCEndpoints
describeVPCEndpoints =
    DescribeVPCEndpoints'
    { _dvpceFilters = Nothing
    , _dvpceNextToken = Nothing
    , _dvpceVPCEndpointIds = Nothing
    , _dvpceDryRun = Nothing
    , _dvpceMaxResults = Nothing
    }

-- | One or more filters.
--
-- -   'service-name': The name of the AWS service.
--
-- -   'vpc-id': The ID of the VPC in which the endpoint resides.
--
-- -   'vpc-endpoint-id': The ID of the endpoint.
--
-- -   'vpc-endpoint-state': The state of the endpoint. ('pending' |
--     'available' | 'deleting' | 'deleted')
--
dvpceFilters :: Lens' DescribeVPCEndpoints [Filter]
dvpceFilters = lens _dvpceFilters (\ s a -> s{_dvpceFilters = a}) . _Default . _Coerce;

-- | The token for the next set of items to return. (You received this token
-- from a prior call.)
dvpceNextToken :: Lens' DescribeVPCEndpoints (Maybe Text)
dvpceNextToken = lens _dvpceNextToken (\ s a -> s{_dvpceNextToken = a});

-- | One or more endpoint IDs.
dvpceVPCEndpointIds :: Lens' DescribeVPCEndpoints [Text]
dvpceVPCEndpointIds = lens _dvpceVPCEndpointIds (\ s a -> s{_dvpceVPCEndpointIds = 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'.
dvpceDryRun :: Lens' DescribeVPCEndpoints (Maybe Bool)
dvpceDryRun = lens _dvpceDryRun (\ s a -> s{_dvpceDryRun = a});

-- | The maximum number of items to return for this request. The request
-- returns a token that you can specify in a subsequent call to get the
-- next set of results.
--
-- Constraint: If the value is greater than 1000, we return only 1000
-- items.
dvpceMaxResults :: Lens' DescribeVPCEndpoints (Maybe Int)
dvpceMaxResults = lens _dvpceMaxResults (\ s a -> s{_dvpceMaxResults = a});

instance AWSRequest DescribeVPCEndpoints where
        type Rs DescribeVPCEndpoints =
             DescribeVPCEndpointsResponse
        request = postQuery ec2
        response
          = receiveXML
              (\ s h x ->
                 DescribeVPCEndpointsResponse' <$>
                   (x .@? "nextToken") <*>
                     (x .@? "vpcEndpointSet" .!@ mempty >>=
                        may (parseXMLList "item"))
                     <*> (pure (fromEnum s)))

instance Hashable DescribeVPCEndpoints

instance NFData DescribeVPCEndpoints

instance ToHeaders DescribeVPCEndpoints where
        toHeaders = const mempty

instance ToPath DescribeVPCEndpoints where
        toPath = const "/"

instance ToQuery DescribeVPCEndpoints where
        toQuery DescribeVPCEndpoints'{..}
          = mconcat
              ["Action" =: ("DescribeVpcEndpoints" :: ByteString),
               "Version" =: ("2015-10-01" :: ByteString),
               toQuery (toQueryList "Filter" <$> _dvpceFilters),
               "NextToken" =: _dvpceNextToken,
               toQuery
                 (toQueryList "VpcEndpointId" <$>
                    _dvpceVPCEndpointIds),
               "DryRun" =: _dvpceDryRun,
               "MaxResults" =: _dvpceMaxResults]

-- | Contains the output of DescribeVpcEndpoints.
--
-- /See:/ 'describeVPCEndpointsResponse' smart constructor.
data DescribeVPCEndpointsResponse = DescribeVPCEndpointsResponse'
    { _dvpcersNextToken      :: !(Maybe Text)
    , _dvpcersVPCEndpoints   :: !(Maybe [VPCEndpoint])
    , _dvpcersResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeVPCEndpointsResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dvpcersNextToken'
--
-- * 'dvpcersVPCEndpoints'
--
-- * 'dvpcersResponseStatus'
describeVPCEndpointsResponse
    :: Int -- ^ 'dvpcersResponseStatus'
    -> DescribeVPCEndpointsResponse
describeVPCEndpointsResponse pResponseStatus_ =
    DescribeVPCEndpointsResponse'
    { _dvpcersNextToken = Nothing
    , _dvpcersVPCEndpoints = Nothing
    , _dvpcersResponseStatus = pResponseStatus_
    }

-- | The token to use when requesting the next set of items. If there are no
-- additional items to return, the string is empty.
dvpcersNextToken :: Lens' DescribeVPCEndpointsResponse (Maybe Text)
dvpcersNextToken = lens _dvpcersNextToken (\ s a -> s{_dvpcersNextToken = a});

-- | Information about the endpoints.
dvpcersVPCEndpoints :: Lens' DescribeVPCEndpointsResponse [VPCEndpoint]
dvpcersVPCEndpoints = lens _dvpcersVPCEndpoints (\ s a -> s{_dvpcersVPCEndpoints = a}) . _Default . _Coerce;

-- | The response status code.
dvpcersResponseStatus :: Lens' DescribeVPCEndpointsResponse Int
dvpcersResponseStatus = lens _dvpcersResponseStatus (\ s a -> s{_dvpcersResponseStatus = a});

instance NFData DescribeVPCEndpointsResponse