{-# 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.DescribeFleetCapacity
-- 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 current status of fleet capacity for one or more fleets.
-- This information includes the number of instances that have been
-- requested for the fleet and the number currently active. You can request
-- capacity for all fleets, or specify a list of one or more fleet IDs.
-- When requesting all fleets, use the pagination parameters to retrieve
-- results as a set of sequential pages. If successful, a < FleetCapacity>
-- object is returned for each requested fleet ID. When specifying a list
-- of fleet IDs, attribute objects are returned only for fleets that
-- currently exist.
--
-- Some API actions may limit the number of fleet IDs allowed in one
-- request. If a request exceeds this limit, the request fails and the
-- error message includes the maximum allowed.
module Network.AWS.GameLift.DescribeFleetCapacity
    (
    -- * Creating a Request
      describeFleetCapacity
    , DescribeFleetCapacity
    -- * Request Lenses
    , dfcNextToken
    , dfcLimit
    , dfcFleetIds

    -- * Destructuring the Response
    , describeFleetCapacityResponse
    , DescribeFleetCapacityResponse
    -- * Response Lenses
    , dfcrsNextToken
    , dfcrsFleetCapacity
    , dfcrsResponseStatus
    ) 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:/ 'describeFleetCapacity' smart constructor.
data DescribeFleetCapacity = DescribeFleetCapacity'
    { _dfcNextToken :: !(Maybe Text)
    , _dfcLimit     :: !(Maybe Nat)
    , _dfcFleetIds  :: !(Maybe (List1 Text))
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeFleetCapacity' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dfcNextToken'
--
-- * 'dfcLimit'
--
-- * 'dfcFleetIds'
describeFleetCapacity
    :: DescribeFleetCapacity
describeFleetCapacity =
    DescribeFleetCapacity'
    { _dfcNextToken = Nothing
    , _dfcLimit = Nothing
    , _dfcFleetIds = Nothing
    }

-- | Token indicating the start of the next sequential page of results. Use
-- the token that is returned with a previous call to this action. To
-- specify the start of the result set, do not specify a value. This
-- parameter is ignored when the request specifies one or a list of fleet
-- IDs.
dfcNextToken :: Lens' DescribeFleetCapacity (Maybe Text)
dfcNextToken = lens _dfcNextToken (\ s a -> s{_dfcNextToken = a});

-- | Maximum number of results to return. You can use this parameter with
-- /NextToken/ to get results as a set of sequential pages. This parameter
-- is ignored when the request specifies one or a list of fleet IDs.
dfcLimit :: Lens' DescribeFleetCapacity (Maybe Natural)
dfcLimit = lens _dfcLimit (\ s a -> s{_dfcLimit = a}) . mapping _Nat;

-- | Unique identifier for the fleet(s) you want to retrieve capacity
-- information for.
dfcFleetIds :: Lens' DescribeFleetCapacity (Maybe (NonEmpty Text))
dfcFleetIds = lens _dfcFleetIds (\ s a -> s{_dfcFleetIds = a}) . mapping _List1;

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

instance Hashable DescribeFleetCapacity

instance NFData DescribeFleetCapacity

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

instance ToJSON DescribeFleetCapacity where
        toJSON DescribeFleetCapacity'{..}
          = object
              (catMaybes
                 [("NextToken" .=) <$> _dfcNextToken,
                  ("Limit" .=) <$> _dfcLimit,
                  ("FleetIds" .=) <$> _dfcFleetIds])

instance ToPath DescribeFleetCapacity where
        toPath = const "/"

instance ToQuery DescribeFleetCapacity where
        toQuery = const mempty

-- | Represents the returned data in response to a request action.
--
-- /See:/ 'describeFleetCapacityResponse' smart constructor.
data DescribeFleetCapacityResponse = DescribeFleetCapacityResponse'
    { _dfcrsNextToken      :: !(Maybe Text)
    , _dfcrsFleetCapacity  :: !(Maybe [FleetCapacity])
    , _dfcrsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeFleetCapacityResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dfcrsNextToken'
--
-- * 'dfcrsFleetCapacity'
--
-- * 'dfcrsResponseStatus'
describeFleetCapacityResponse
    :: Int -- ^ 'dfcrsResponseStatus'
    -> DescribeFleetCapacityResponse
describeFleetCapacityResponse pResponseStatus_ =
    DescribeFleetCapacityResponse'
    { _dfcrsNextToken = Nothing
    , _dfcrsFleetCapacity = Nothing
    , _dfcrsResponseStatus = pResponseStatus_
    }

-- | Token indicating where to resume retrieving results on the next call to
-- this action. If no token is returned, these results represent the end of
-- the list.
--
-- If a request has a limit that exactly matches the number of remaining
-- results, a token is returned even though there are no more results to
-- retrieve.
dfcrsNextToken :: Lens' DescribeFleetCapacityResponse (Maybe Text)
dfcrsNextToken = lens _dfcrsNextToken (\ s a -> s{_dfcrsNextToken = a});

-- | Collection of objects containing capacity information for each requested
-- fleet ID. Leave this parameter empty to retrieve capacity information
-- for all fleets.
dfcrsFleetCapacity :: Lens' DescribeFleetCapacityResponse [FleetCapacity]
dfcrsFleetCapacity = lens _dfcrsFleetCapacity (\ s a -> s{_dfcrsFleetCapacity = a}) . _Default . _Coerce;

-- | The response status code.
dfcrsResponseStatus :: Lens' DescribeFleetCapacityResponse Int
dfcrsResponseStatus = lens _dfcrsResponseStatus (\ s a -> s{_dfcrsResponseStatus = a});

instance NFData DescribeFleetCapacityResponse