{-# 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.EMR.RemoveTags
-- 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)
--
-- Removes tags from an Amazon EMR resource. Tags make it easier to
-- associate clusters in various ways, such as grouping clusters to track
-- your Amazon EMR resource allocation costs. For more information, see
-- <http://docs.aws.amazon.com/ElasticMapReduce/latest/DeveloperGuide/emr-plan-tags.html Tagging Amazon EMR Resources>.
--
-- The following example removes the stack tag with value Prod from a
-- cluster:
--
-- /See:/ <http://docs.aws.amazon.com/ElasticMapReduce/latest/API/API_RemoveTags.html AWS API Reference> for RemoveTags.
module Network.AWS.EMR.RemoveTags
    (
    -- * Creating a Request
      removeTags
    , RemoveTags
    -- * Request Lenses
    , rtResourceId
    , rtTagKeys

    -- * Destructuring the Response
    , removeTagsResponse
    , RemoveTagsResponse
    -- * Response Lenses
    , rtrsResponseStatus
    ) where

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

-- | This input identifies a cluster and a list of tags to remove.
--
-- /See:/ 'removeTags' smart constructor.
data RemoveTags = RemoveTags'
    { _rtResourceId :: !Text
    , _rtTagKeys    :: ![Text]
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'RemoveTags' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'rtResourceId'
--
-- * 'rtTagKeys'
removeTags
    :: Text -- ^ 'rtResourceId'
    -> RemoveTags
removeTags pResourceId_ =
    RemoveTags'
    { _rtResourceId = pResourceId_
    , _rtTagKeys = mempty
    }

-- | The Amazon EMR resource identifier from which tags will be removed. This
-- value must be a cluster identifier.
rtResourceId :: Lens' RemoveTags Text
rtResourceId = lens _rtResourceId (\ s a -> s{_rtResourceId = a});

-- | A list of tag keys to remove from a resource.
rtTagKeys :: Lens' RemoveTags [Text]
rtTagKeys = lens _rtTagKeys (\ s a -> s{_rtTagKeys = a}) . _Coerce;

instance AWSRequest RemoveTags where
        type Rs RemoveTags = RemoveTagsResponse
        request = postJSON eMR
        response
          = receiveEmpty
              (\ s h x ->
                 RemoveTagsResponse' <$> (pure (fromEnum s)))

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

instance ToJSON RemoveTags where
        toJSON RemoveTags'{..}
          = object
              (catMaybes
                 [Just ("ResourceId" .= _rtResourceId),
                  Just ("TagKeys" .= _rtTagKeys)])

instance ToPath RemoveTags where
        toPath = const "/"

instance ToQuery RemoveTags where
        toQuery = const mempty

-- | This output indicates the result of removing tags from a resource.
--
-- /See:/ 'removeTagsResponse' smart constructor.
newtype RemoveTagsResponse = RemoveTagsResponse'
    { _rtrsResponseStatus :: Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'RemoveTagsResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'rtrsResponseStatus'
removeTagsResponse
    :: Int -- ^ 'rtrsResponseStatus'
    -> RemoveTagsResponse
removeTagsResponse pResponseStatus_ =
    RemoveTagsResponse'
    { _rtrsResponseStatus = pResponseStatus_
    }

-- | The response status code.
rtrsResponseStatus :: Lens' RemoveTagsResponse Int
rtrsResponseStatus = lens _rtrsResponseStatus (\ s a -> s{_rtrsResponseStatus = a});