{-# 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.DMS.DescribeReplicationSubnetGroups
-- 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)
--
-- Returns information about the replication subnet groups.
--
module Network.AWS.DMS.DescribeReplicationSubnetGroups
    (
    -- * Creating a Request
      describeReplicationSubnetGroups
    , DescribeReplicationSubnetGroups
    -- * Request Lenses
    , drsgFilters
    , drsgMarker
    , drsgMaxRecords

    -- * Destructuring the Response
    , describeReplicationSubnetGroupsResponse
    , DescribeReplicationSubnetGroupsResponse
    -- * Response Lenses
    , drsgsrsMarker
    , drsgsrsReplicationSubnetGroups
    , drsgsrsResponseStatus
    ) where

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

-- | /See:/ 'describeReplicationSubnetGroups' smart constructor.
data DescribeReplicationSubnetGroups = DescribeReplicationSubnetGroups'
    { _drsgFilters    :: !(Maybe [Filter])
    , _drsgMarker     :: !(Maybe Text)
    , _drsgMaxRecords :: !(Maybe Int)
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeReplicationSubnetGroups' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'drsgFilters'
--
-- * 'drsgMarker'
--
-- * 'drsgMaxRecords'
describeReplicationSubnetGroups
    :: DescribeReplicationSubnetGroups
describeReplicationSubnetGroups =
    DescribeReplicationSubnetGroups'
    { _drsgFilters = Nothing
    , _drsgMarker = Nothing
    , _drsgMaxRecords = Nothing
    }

-- | Filters applied to the describe action.
drsgFilters :: Lens' DescribeReplicationSubnetGroups [Filter]
drsgFilters = lens _drsgFilters (\ s a -> s{_drsgFilters = a}) . _Default . _Coerce;

-- | An optional pagination token provided by a previous request. If this
-- parameter is specified, the response includes only records beyond the
-- marker, up to the value specified by 'MaxRecords'.
drsgMarker :: Lens' DescribeReplicationSubnetGroups (Maybe Text)
drsgMarker = lens _drsgMarker (\ s a -> s{_drsgMarker = a});

-- | The maximum number of records to include in the response. If more
-- records exist than the specified 'MaxRecords' value, a pagination token
-- called a marker is included in the response so that the remaining
-- results can be retrieved.
--
-- Default: 100
--
-- Constraints: Minimum 20, maximum 100.
drsgMaxRecords :: Lens' DescribeReplicationSubnetGroups (Maybe Int)
drsgMaxRecords = lens _drsgMaxRecords (\ s a -> s{_drsgMaxRecords = a});

instance AWSRequest DescribeReplicationSubnetGroups
         where
        type Rs DescribeReplicationSubnetGroups =
             DescribeReplicationSubnetGroupsResponse
        request = postJSON dms
        response
          = receiveJSON
              (\ s h x ->
                 DescribeReplicationSubnetGroupsResponse' <$>
                   (x .?> "Marker") <*>
                     (x .?> "ReplicationSubnetGroups" .!@ mempty)
                     <*> (pure (fromEnum s)))

instance Hashable DescribeReplicationSubnetGroups

instance NFData DescribeReplicationSubnetGroups

instance ToHeaders DescribeReplicationSubnetGroups
         where
        toHeaders
          = const
              (mconcat
                 ["X-Amz-Target" =#
                    ("AmazonDMSv20160101.DescribeReplicationSubnetGroups"
                       :: ByteString),
                  "Content-Type" =#
                    ("application/x-amz-json-1.1" :: ByteString)])

instance ToJSON DescribeReplicationSubnetGroups where
        toJSON DescribeReplicationSubnetGroups'{..}
          = object
              (catMaybes
                 [("Filters" .=) <$> _drsgFilters,
                  ("Marker" .=) <$> _drsgMarker,
                  ("MaxRecords" .=) <$> _drsgMaxRecords])

instance ToPath DescribeReplicationSubnetGroups where
        toPath = const "/"

instance ToQuery DescribeReplicationSubnetGroups
         where
        toQuery = const mempty

-- | /See:/ 'describeReplicationSubnetGroupsResponse' smart constructor.
data DescribeReplicationSubnetGroupsResponse = DescribeReplicationSubnetGroupsResponse'
    { _drsgsrsMarker                  :: !(Maybe Text)
    , _drsgsrsReplicationSubnetGroups :: !(Maybe [ReplicationSubnetGroup])
    , _drsgsrsResponseStatus          :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeReplicationSubnetGroupsResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'drsgsrsMarker'
--
-- * 'drsgsrsReplicationSubnetGroups'
--
-- * 'drsgsrsResponseStatus'
describeReplicationSubnetGroupsResponse
    :: Int -- ^ 'drsgsrsResponseStatus'
    -> DescribeReplicationSubnetGroupsResponse
describeReplicationSubnetGroupsResponse pResponseStatus_ =
    DescribeReplicationSubnetGroupsResponse'
    { _drsgsrsMarker = Nothing
    , _drsgsrsReplicationSubnetGroups = Nothing
    , _drsgsrsResponseStatus = pResponseStatus_
    }

-- | An optional pagination token provided by a previous request. If this
-- parameter is specified, the response includes only records beyond the
-- marker, up to the value specified by 'MaxRecords'.
drsgsrsMarker :: Lens' DescribeReplicationSubnetGroupsResponse (Maybe Text)
drsgsrsMarker = lens _drsgsrsMarker (\ s a -> s{_drsgsrsMarker = a});

-- | A description of the replication subnet groups.
drsgsrsReplicationSubnetGroups :: Lens' DescribeReplicationSubnetGroupsResponse [ReplicationSubnetGroup]
drsgsrsReplicationSubnetGroups = lens _drsgsrsReplicationSubnetGroups (\ s a -> s{_drsgsrsReplicationSubnetGroups = a}) . _Default . _Coerce;

-- | The response status code.
drsgsrsResponseStatus :: Lens' DescribeReplicationSubnetGroupsResponse Int
drsgsrsResponseStatus = lens _drsgsrsResponseStatus (\ s a -> s{_drsgsrsResponseStatus = a});

instance NFData
         DescribeReplicationSubnetGroupsResponse