{-# 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.GameLift.DescribeEC2InstanceLimits
-- 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)
--
-- Retrieves the following information for the specified EC2 instance type:
--
-- -   maximum number of instances allowed per AWS account (service limit)
-- -   current usage level for the AWS account
--
-- Service limits vary depending on region. Available regions for GameLift
-- can be found in the AWS Management Console for GameLift (see the
-- drop-down list in the upper right corner).
module Network.AWS.GameLift.DescribeEC2InstanceLimits
    (
    -- * Creating a Request
      describeEC2InstanceLimits
    , DescribeEC2InstanceLimits
    -- * Request Lenses
    , deilEC2InstanceType

    -- * Destructuring the Response
    , describeEC2InstanceLimitsResponse
    , DescribeEC2InstanceLimitsResponse
    -- * Response Lenses
    , deilrsEC2InstanceLimits
    , deilrsResponseStatus
    ) where

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

-- | Represents the input for a request action.
--
-- /See:/ 'describeEC2InstanceLimits' smart constructor.
newtype DescribeEC2InstanceLimits = DescribeEC2InstanceLimits'
    { _deilEC2InstanceType :: Maybe EC2InstanceType
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeEC2InstanceLimits' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'deilEC2InstanceType'
describeEC2InstanceLimits
    :: DescribeEC2InstanceLimits
describeEC2InstanceLimits =
    DescribeEC2InstanceLimits'
    { _deilEC2InstanceType = Nothing
    }

-- | Type of EC2 instances used in the fleet. EC2 instance types define the
-- CPU, memory, storage, and networking capacity of the fleetaposs hosts.
-- Amazon GameLift supports the EC2 instance types listed below. See
-- <https://aws.amazon.com/ec2/instance-types/ Amazon EC2 Instance Types>
-- for detailed descriptions of each. Leave this parameter blank to
-- retrieve limits for all types.
deilEC2InstanceType :: Lens' DescribeEC2InstanceLimits (Maybe EC2InstanceType)
deilEC2InstanceType = lens _deilEC2InstanceType (\ s a -> s{_deilEC2InstanceType = a});

instance AWSRequest DescribeEC2InstanceLimits where
        type Rs DescribeEC2InstanceLimits =
             DescribeEC2InstanceLimitsResponse
        request = postJSON gameLift
        response
          = receiveJSON
              (\ s h x ->
                 DescribeEC2InstanceLimitsResponse' <$>
                   (x .?> "EC2InstanceLimits" .!@ mempty) <*>
                     (pure (fromEnum s)))

instance Hashable DescribeEC2InstanceLimits

instance ToHeaders DescribeEC2InstanceLimits where
        toHeaders
          = const
              (mconcat
                 ["X-Amz-Target" =#
                    ("GameLift.DescribeEC2InstanceLimits" :: ByteString),
                  "Content-Type" =#
                    ("application/x-amz-json-1.1" :: ByteString)])

instance ToJSON DescribeEC2InstanceLimits where
        toJSON DescribeEC2InstanceLimits'{..}
          = object
              (catMaybes
                 [("EC2InstanceType" .=) <$> _deilEC2InstanceType])

instance ToPath DescribeEC2InstanceLimits where
        toPath = const "/"

instance ToQuery DescribeEC2InstanceLimits where
        toQuery = const mempty

-- | Represents the returned data in response to a request action.
--
-- /See:/ 'describeEC2InstanceLimitsResponse' smart constructor.
data DescribeEC2InstanceLimitsResponse = DescribeEC2InstanceLimitsResponse'
    { _deilrsEC2InstanceLimits :: !(Maybe [EC2InstanceLimit])
    , _deilrsResponseStatus    :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeEC2InstanceLimitsResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'deilrsEC2InstanceLimits'
--
-- * 'deilrsResponseStatus'
describeEC2InstanceLimitsResponse
    :: Int -- ^ 'deilrsResponseStatus'
    -> DescribeEC2InstanceLimitsResponse
describeEC2InstanceLimitsResponse pResponseStatus_ =
    DescribeEC2InstanceLimitsResponse'
    { _deilrsEC2InstanceLimits = Nothing
    , _deilrsResponseStatus = pResponseStatus_
    }

-- | Object containing the maximum number of instances for the specified
-- instance type.
deilrsEC2InstanceLimits :: Lens' DescribeEC2InstanceLimitsResponse [EC2InstanceLimit]
deilrsEC2InstanceLimits = lens _deilrsEC2InstanceLimits (\ s a -> s{_deilrsEC2InstanceLimits = a}) . _Default . _Coerce;

-- | The response status code.
deilrsResponseStatus :: Lens' DescribeEC2InstanceLimitsResponse Int
deilrsResponseStatus = lens _deilrsResponseStatus (\ s a -> s{_deilrsResponseStatus = a});