{-# 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.OpsWorks.DescribeStackSummary
-- 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)
--
-- Describes the number of layers and apps in a specified stack, and the
-- number of instances in each state, such as 'running_setup' or 'online'.
--
-- __Required Permissions__: To use this action, an IAM user must have a
-- Show, Deploy, or Manage permissions level for the stack, or an attached
-- policy that explicitly grants permissions. For more information on user
-- permissions, see
-- <http://docs.aws.amazon.com/opsworks/latest/userguide/opsworks-security-users.html Managing User Permissions>.
module Network.AWS.OpsWorks.DescribeStackSummary
    (
    -- * Creating a Request
      describeStackSummary
    , DescribeStackSummary
    -- * Request Lenses
    , dssStackId

    -- * Destructuring the Response
    , describeStackSummaryResponse
    , DescribeStackSummaryResponse
    -- * Response Lenses
    , dssrsStackSummary
    , dssrsResponseStatus
    ) where

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

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

-- | Creates a value of 'DescribeStackSummary' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dssStackId'
describeStackSummary
    :: Text -- ^ 'dssStackId'
    -> DescribeStackSummary
describeStackSummary pStackId_ =
    DescribeStackSummary'
    { _dssStackId = pStackId_
    }

-- | The stack ID.
dssStackId :: Lens' DescribeStackSummary Text
dssStackId = lens _dssStackId (\ s a -> s{_dssStackId = a});

instance AWSRequest DescribeStackSummary where
        type Rs DescribeStackSummary =
             DescribeStackSummaryResponse
        request = postJSON opsWorks
        response
          = receiveJSON
              (\ s h x ->
                 DescribeStackSummaryResponse' <$>
                   (x .?> "StackSummary") <*> (pure (fromEnum s)))

instance Hashable DescribeStackSummary

instance NFData DescribeStackSummary

instance ToHeaders DescribeStackSummary where
        toHeaders
          = const
              (mconcat
                 ["X-Amz-Target" =#
                    ("OpsWorks_20130218.DescribeStackSummary" ::
                       ByteString),
                  "Content-Type" =#
                    ("application/x-amz-json-1.1" :: ByteString)])

instance ToJSON DescribeStackSummary where
        toJSON DescribeStackSummary'{..}
          = object
              (catMaybes [Just ("StackId" .= _dssStackId)])

instance ToPath DescribeStackSummary where
        toPath = const "/"

instance ToQuery DescribeStackSummary where
        toQuery = const mempty

-- | Contains the response to a 'DescribeStackSummary' request.
--
-- /See:/ 'describeStackSummaryResponse' smart constructor.
data DescribeStackSummaryResponse = DescribeStackSummaryResponse'
    { _dssrsStackSummary   :: !(Maybe StackSummary)
    , _dssrsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeStackSummaryResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dssrsStackSummary'
--
-- * 'dssrsResponseStatus'
describeStackSummaryResponse
    :: Int -- ^ 'dssrsResponseStatus'
    -> DescribeStackSummaryResponse
describeStackSummaryResponse pResponseStatus_ =
    DescribeStackSummaryResponse'
    { _dssrsStackSummary = Nothing
    , _dssrsResponseStatus = pResponseStatus_
    }

-- | A 'StackSummary' object that contains the results.
dssrsStackSummary :: Lens' DescribeStackSummaryResponse (Maybe StackSummary)
dssrsStackSummary = lens _dssrsStackSummary (\ s a -> s{_dssrsStackSummary = a});

-- | The response status code.
dssrsResponseStatus :: Lens' DescribeStackSummaryResponse Int
dssrsResponseStatus = lens _dssrsResponseStatus (\ s a -> s{_dssrsResponseStatus = a});

instance NFData DescribeStackSummaryResponse