{-# 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.DescribeTaskDefinition
-- 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 a task definition. You can specify a 'family' and 'revision'
-- to find information about a specific task definition, or you can simply
-- specify the family to find the latest 'ACTIVE' revision in that family.
--
-- You can only describe 'INACTIVE' task definitions while an active task
-- or service references them.
--
-- /See:/ <http://docs.aws.amazon.com/AmazonECS/latest/APIReference/API_DescribeTaskDefinition.html AWS API Reference> for DescribeTaskDefinition.
module Network.AWS.ECS.DescribeTaskDefinition
    (
    -- * Creating a Request
      describeTaskDefinition
    , DescribeTaskDefinition
    -- * Request Lenses
    , dtdTaskDefinition

    -- * Destructuring the Response
    , describeTaskDefinitionResponse
    , DescribeTaskDefinitionResponse
    -- * Response Lenses
    , desrsTaskDefinition
    , desrsResponseStatus
    ) where

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

-- | /See:/ 'describeTaskDefinition' smart constructor.
newtype DescribeTaskDefinition = DescribeTaskDefinition'
    { _dtdTaskDefinition :: Text
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeTaskDefinition' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dtdTaskDefinition'
describeTaskDefinition
    :: Text -- ^ 'dtdTaskDefinition'
    -> DescribeTaskDefinition
describeTaskDefinition pTaskDefinition_ =
    DescribeTaskDefinition'
    { _dtdTaskDefinition = pTaskDefinition_
    }

-- | The 'family' for the latest 'ACTIVE' revision, 'family' and 'revision'
-- ('family:revision') for a specific revision in the family, or full
-- Amazon Resource Name (ARN) of the task definition to describe.
dtdTaskDefinition :: Lens' DescribeTaskDefinition Text
dtdTaskDefinition = lens _dtdTaskDefinition (\ s a -> s{_dtdTaskDefinition = a});

instance AWSRequest DescribeTaskDefinition where
        type Rs DescribeTaskDefinition =
             DescribeTaskDefinitionResponse
        request = postJSON eCS
        response
          = receiveJSON
              (\ s h x ->
                 DescribeTaskDefinitionResponse' <$>
                   (x .?> "taskDefinition") <*> (pure (fromEnum s)))

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

instance ToJSON DescribeTaskDefinition where
        toJSON DescribeTaskDefinition'{..}
          = object
              (catMaybes
                 [Just ("taskDefinition" .= _dtdTaskDefinition)])

instance ToPath DescribeTaskDefinition where
        toPath = const "/"

instance ToQuery DescribeTaskDefinition where
        toQuery = const mempty

-- | /See:/ 'describeTaskDefinitionResponse' smart constructor.
data DescribeTaskDefinitionResponse = DescribeTaskDefinitionResponse'
    { _desrsTaskDefinition :: !(Maybe TaskDefinition)
    , _desrsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeTaskDefinitionResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'desrsTaskDefinition'
--
-- * 'desrsResponseStatus'
describeTaskDefinitionResponse
    :: Int -- ^ 'desrsResponseStatus'
    -> DescribeTaskDefinitionResponse
describeTaskDefinitionResponse pResponseStatus_ =
    DescribeTaskDefinitionResponse'
    { _desrsTaskDefinition = Nothing
    , _desrsResponseStatus = pResponseStatus_
    }

-- | The full task definition description.
desrsTaskDefinition :: Lens' DescribeTaskDefinitionResponse (Maybe TaskDefinition)
desrsTaskDefinition = lens _desrsTaskDefinition (\ s a -> s{_desrsTaskDefinition = a});

-- | The response status code.
desrsResponseStatus :: Lens' DescribeTaskDefinitionResponse Int
desrsResponseStatus = lens _desrsResponseStatus (\ s a -> s{_desrsResponseStatus = a});