{-# 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.ECS.ListTaskDefinitionFamilies
-- 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 task definition families that are registered to your
-- account (which may include task definition families that no longer have
-- any 'ACTIVE' task definitions). You can filter the results with the
-- 'familyPrefix' parameter.
--
-- /See:/ <http://docs.aws.amazon.com/AmazonECS/latest/APIReference/API_ListTaskDefinitionFamilies.html AWS API Reference> for ListTaskDefinitionFamilies.
--
-- This operation returns paginated results.
module Network.AWS.ECS.ListTaskDefinitionFamilies
    (
    -- * Creating a Request
      listTaskDefinitionFamilies
    , ListTaskDefinitionFamilies
    -- * Request Lenses
    , ltdfFamilyPrefix
    , ltdfNextToken
    , ltdfMaxResults

    -- * Destructuring the Response
    , listTaskDefinitionFamiliesResponse
    , ListTaskDefinitionFamiliesResponse
    -- * Response Lenses
    , ltdfrsFamilies
    , ltdfrsNextToken
    , ltdfrsResponseStatus
    ) where

import           Network.AWS.ECS.Types
import           Network.AWS.ECS.Types.Product
import           Network.AWS.Pager
import           Network.AWS.Prelude
import           Network.AWS.Request
import           Network.AWS.Response

-- | /See:/ 'listTaskDefinitionFamilies' smart constructor.
data ListTaskDefinitionFamilies = ListTaskDefinitionFamilies'
    { _ltdfFamilyPrefix :: !(Maybe Text)
    , _ltdfNextToken    :: !(Maybe Text)
    , _ltdfMaxResults   :: !(Maybe Int)
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'ListTaskDefinitionFamilies' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'ltdfFamilyPrefix'
--
-- * 'ltdfNextToken'
--
-- * 'ltdfMaxResults'
listTaskDefinitionFamilies
    :: ListTaskDefinitionFamilies
listTaskDefinitionFamilies =
    ListTaskDefinitionFamilies'
    { _ltdfFamilyPrefix = Nothing
    , _ltdfNextToken = Nothing
    , _ltdfMaxResults = Nothing
    }

-- | The 'familyPrefix' is a string that is used to filter the results of
-- 'ListTaskDefinitionFamilies'. If you specify a 'familyPrefix', only task
-- definition family names that begin with the 'familyPrefix' string are
-- returned.
ltdfFamilyPrefix :: Lens' ListTaskDefinitionFamilies (Maybe Text)
ltdfFamilyPrefix = lens _ltdfFamilyPrefix (\ s a -> s{_ltdfFamilyPrefix = a});

-- | The 'nextToken' value returned from a previous paginated
-- 'ListTaskDefinitionFamilies' request where 'maxResults' was used and the
-- results exceeded the value of that parameter. Pagination continues from
-- the end of the previous results that returned the 'nextToken' value.
-- This value is 'null' when there are no more results to return.
ltdfNextToken :: Lens' ListTaskDefinitionFamilies (Maybe Text)
ltdfNextToken = lens _ltdfNextToken (\ s a -> s{_ltdfNextToken = a});

-- | The maximum number of task definition family results returned by
-- 'ListTaskDefinitionFamilies' in paginated output. When this parameter is
-- used, 'ListTaskDefinitions' only returns 'maxResults' results in a
-- single page along with a 'nextToken' response element. The remaining
-- results of the initial request can be seen by sending another
-- 'ListTaskDefinitionFamilies' request with the returned 'nextToken'
-- value. This value can be between 1 and 100. If this parameter is not
-- used, then 'ListTaskDefinitionFamilies' returns up to 100 results and a
-- 'nextToken' value if applicable.
ltdfMaxResults :: Lens' ListTaskDefinitionFamilies (Maybe Int)
ltdfMaxResults = lens _ltdfMaxResults (\ s a -> s{_ltdfMaxResults = a});

instance AWSPager ListTaskDefinitionFamilies where
        page rq rs
          | stop (rs ^. ltdfrsNextToken) = Nothing
          | stop (rs ^. ltdfrsFamilies) = Nothing
          | otherwise =
            Just $ rq & ltdfNextToken .~ rs ^. ltdfrsNextToken

instance AWSRequest ListTaskDefinitionFamilies where
        type Rs ListTaskDefinitionFamilies =
             ListTaskDefinitionFamiliesResponse
        request = postJSON eCS
        response
          = receiveJSON
              (\ s h x ->
                 ListTaskDefinitionFamiliesResponse' <$>
                   (x .?> "families" .!@ mempty) <*> (x .?> "nextToken")
                     <*> (pure (fromEnum s)))

instance ToHeaders ListTaskDefinitionFamilies where
        toHeaders
          = const
              (mconcat
                 ["X-Amz-Target" =#
                    ("AmazonEC2ContainerServiceV20141113.ListTaskDefinitionFamilies"
                       :: ByteString),
                  "Content-Type" =#
                    ("application/x-amz-json-1.1" :: ByteString)])

instance ToJSON ListTaskDefinitionFamilies where
        toJSON ListTaskDefinitionFamilies'{..}
          = object
              (catMaybes
                 [("familyPrefix" .=) <$> _ltdfFamilyPrefix,
                  ("nextToken" .=) <$> _ltdfNextToken,
                  ("maxResults" .=) <$> _ltdfMaxResults])

instance ToPath ListTaskDefinitionFamilies where
        toPath = const "/"

instance ToQuery ListTaskDefinitionFamilies where
        toQuery = const mempty

-- | /See:/ 'listTaskDefinitionFamiliesResponse' smart constructor.
data ListTaskDefinitionFamiliesResponse = ListTaskDefinitionFamiliesResponse'
    { _ltdfrsFamilies       :: !(Maybe [Text])
    , _ltdfrsNextToken      :: !(Maybe Text)
    , _ltdfrsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'ListTaskDefinitionFamiliesResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'ltdfrsFamilies'
--
-- * 'ltdfrsNextToken'
--
-- * 'ltdfrsResponseStatus'
listTaskDefinitionFamiliesResponse
    :: Int -- ^ 'ltdfrsResponseStatus'
    -> ListTaskDefinitionFamiliesResponse
listTaskDefinitionFamiliesResponse pResponseStatus_ =
    ListTaskDefinitionFamiliesResponse'
    { _ltdfrsFamilies = Nothing
    , _ltdfrsNextToken = Nothing
    , _ltdfrsResponseStatus = pResponseStatus_
    }

-- | The list of task definition family names that match the
-- 'ListTaskDefinitionFamilies' request.
ltdfrsFamilies :: Lens' ListTaskDefinitionFamiliesResponse [Text]
ltdfrsFamilies = lens _ltdfrsFamilies (\ s a -> s{_ltdfrsFamilies = a}) . _Default . _Coerce;

-- | The 'nextToken' value to include in a future
-- 'ListTaskDefinitionFamilies' request. When the results of a
-- 'ListTaskDefinitionFamilies' request exceed 'maxResults', this value can
-- be used to retrieve the next page of results. This value is 'null' when
-- there are no more results to return.
ltdfrsNextToken :: Lens' ListTaskDefinitionFamiliesResponse (Maybe Text)
ltdfrsNextToken = lens _ltdfrsNextToken (\ s a -> s{_ltdfrsNextToken = a});

-- | The response status code.
ltdfrsResponseStatus :: Lens' ListTaskDefinitionFamiliesResponse Int
ltdfrsResponseStatus = lens _ltdfrsResponseStatus (\ s a -> s{_ltdfrsResponseStatus = a});