{-# 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.CloudWatchLogs.DescribeDestinations
-- Copyright   : (c) 2013-2018 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay <brendan.g.hay+amazonka@gmail.com>
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Lists all your destinations. The results are ASCII-sorted by destination name.
--
--
--
-- This operation returns paginated results.
module Network.AWS.CloudWatchLogs.DescribeDestinations
    (
    -- * Creating a Request
      describeDestinations
    , DescribeDestinations
    -- * Request Lenses
    , ddNextToken
    , ddLimit
    , ddDestinationNamePrefix

    -- * Destructuring the Response
    , describeDestinationsResponse
    , DescribeDestinationsResponse
    -- * Response Lenses
    , ddrsNextToken
    , ddrsDestinations
    , ddrsResponseStatus
    ) where

import Network.AWS.CloudWatchLogs.Types
import Network.AWS.CloudWatchLogs.Types.Product
import Network.AWS.Lens
import Network.AWS.Pager
import Network.AWS.Prelude
import Network.AWS.Request
import Network.AWS.Response

-- | /See:/ 'describeDestinations' smart constructor.
data DescribeDestinations = DescribeDestinations'
  { _ddNextToken             :: !(Maybe Text)
  , _ddLimit                 :: !(Maybe Nat)
  , _ddDestinationNamePrefix :: !(Maybe Text)
  } deriving (Eq, Read, Show, Data, Typeable, Generic)


-- | Creates a value of 'DescribeDestinations' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'ddNextToken' - The token for the next set of items to return. (You received this token from a previous call.)
--
-- * 'ddLimit' - The maximum number of items returned. If you don't specify a value, the default is up to 50 items.
--
-- * 'ddDestinationNamePrefix' - The prefix to match. If you don't specify a value, no prefix filter is applied.
describeDestinations
    :: DescribeDestinations
describeDestinations =
  DescribeDestinations'
    { _ddNextToken = Nothing
    , _ddLimit = Nothing
    , _ddDestinationNamePrefix = Nothing
    }


-- | The token for the next set of items to return. (You received this token from a previous call.)
ddNextToken :: Lens' DescribeDestinations (Maybe Text)
ddNextToken = lens _ddNextToken (\ s a -> s{_ddNextToken = a})

-- | The maximum number of items returned. If you don't specify a value, the default is up to 50 items.
ddLimit :: Lens' DescribeDestinations (Maybe Natural)
ddLimit = lens _ddLimit (\ s a -> s{_ddLimit = a}) . mapping _Nat

-- | The prefix to match. If you don't specify a value, no prefix filter is applied.
ddDestinationNamePrefix :: Lens' DescribeDestinations (Maybe Text)
ddDestinationNamePrefix = lens _ddDestinationNamePrefix (\ s a -> s{_ddDestinationNamePrefix = a})

instance AWSPager DescribeDestinations where
        page rq rs
          | stop (rs ^. ddrsNextToken) = Nothing
          | stop (rs ^. ddrsDestinations) = Nothing
          | otherwise =
            Just $ rq & ddNextToken .~ rs ^. ddrsNextToken

instance AWSRequest DescribeDestinations where
        type Rs DescribeDestinations =
             DescribeDestinationsResponse
        request = postJSON cloudWatchLogs
        response
          = receiveJSON
              (\ s h x ->
                 DescribeDestinationsResponse' <$>
                   (x .?> "nextToken") <*>
                     (x .?> "destinations" .!@ mempty)
                     <*> (pure (fromEnum s)))

instance Hashable DescribeDestinations where

instance NFData DescribeDestinations where

instance ToHeaders DescribeDestinations where
        toHeaders
          = const
              (mconcat
                 ["X-Amz-Target" =#
                    ("Logs_20140328.DescribeDestinations" :: ByteString),
                  "Content-Type" =#
                    ("application/x-amz-json-1.1" :: ByteString)])

instance ToJSON DescribeDestinations where
        toJSON DescribeDestinations'{..}
          = object
              (catMaybes
                 [("nextToken" .=) <$> _ddNextToken,
                  ("limit" .=) <$> _ddLimit,
                  ("DestinationNamePrefix" .=) <$>
                    _ddDestinationNamePrefix])

instance ToPath DescribeDestinations where
        toPath = const "/"

instance ToQuery DescribeDestinations where
        toQuery = const mempty

-- | /See:/ 'describeDestinationsResponse' smart constructor.
data DescribeDestinationsResponse = DescribeDestinationsResponse'
  { _ddrsNextToken      :: !(Maybe Text)
  , _ddrsDestinations   :: !(Maybe [Destination])
  , _ddrsResponseStatus :: !Int
  } deriving (Eq, Read, Show, Data, Typeable, Generic)


-- | Creates a value of 'DescribeDestinationsResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'ddrsNextToken' - Undocumented member.
--
-- * 'ddrsDestinations' - The destinations.
--
-- * 'ddrsResponseStatus' - -- | The response status code.
describeDestinationsResponse
    :: Int -- ^ 'ddrsResponseStatus'
    -> DescribeDestinationsResponse
describeDestinationsResponse pResponseStatus_ =
  DescribeDestinationsResponse'
    { _ddrsNextToken = Nothing
    , _ddrsDestinations = Nothing
    , _ddrsResponseStatus = pResponseStatus_
    }


-- | Undocumented member.
ddrsNextToken :: Lens' DescribeDestinationsResponse (Maybe Text)
ddrsNextToken = lens _ddrsNextToken (\ s a -> s{_ddrsNextToken = a})

-- | The destinations.
ddrsDestinations :: Lens' DescribeDestinationsResponse [Destination]
ddrsDestinations = lens _ddrsDestinations (\ s a -> s{_ddrsDestinations = a}) . _Default . _Coerce

-- | -- | The response status code.
ddrsResponseStatus :: Lens' DescribeDestinationsResponse Int
ddrsResponseStatus = lens _ddrsResponseStatus (\ s a -> s{_ddrsResponseStatus = a})

instance NFData DescribeDestinationsResponse where