{-# 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.EC2.DescribeFleets
-- Copyright   : (c) 2013-2018 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay <brendan.g.hay+amazonka@gmail.com>
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Describes the specified EC2 Fleet.
--
--
module Network.AWS.EC2.DescribeFleets
    (
    -- * Creating a Request
      describeFleets
    , DescribeFleets
    -- * Request Lenses
    , dfsFilters
    , dfsNextToken
    , dfsFleetIds
    , dfsDryRun
    , dfsMaxResults

    -- * Destructuring the Response
    , describeFleetsResponse
    , DescribeFleetsResponse
    -- * Response Lenses
    , dfsrsNextToken
    , dfsrsFleets
    , dfsrsResponseStatus
    ) where

import Network.AWS.EC2.Types
import Network.AWS.EC2.Types.Product
import Network.AWS.Lens
import Network.AWS.Prelude
import Network.AWS.Request
import Network.AWS.Response

-- | /See:/ 'describeFleets' smart constructor.
data DescribeFleets = DescribeFleets'
  { _dfsFilters    :: !(Maybe [Filter])
  , _dfsNextToken  :: !(Maybe Text)
  , _dfsFleetIds   :: !(Maybe [Text])
  , _dfsDryRun     :: !(Maybe Bool)
  , _dfsMaxResults :: !(Maybe Int)
  } deriving (Eq, Read, Show, Data, Typeable, Generic)


-- | Creates a value of 'DescribeFleets' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dfsFilters' - One or more filters.
--
-- * 'dfsNextToken' - The token for the next set of results.
--
-- * 'dfsFleetIds' - The ID of the EC2 Fleets.
--
-- * 'dfsDryRun' - Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is @DryRunOperation@ . Otherwise, it is @UnauthorizedOperation@ .
--
-- * 'dfsMaxResults' - The maximum number of results to return in a single call. Specify a value between 1 and 1000. The default value is 1000. To retrieve the remaining results, make another call with the returned @NextToken@ value.
describeFleets
    :: DescribeFleets
describeFleets =
  DescribeFleets'
    { _dfsFilters = Nothing
    , _dfsNextToken = Nothing
    , _dfsFleetIds = Nothing
    , _dfsDryRun = Nothing
    , _dfsMaxResults = Nothing
    }


-- | One or more filters.
dfsFilters :: Lens' DescribeFleets [Filter]
dfsFilters = lens _dfsFilters (\ s a -> s{_dfsFilters = a}) . _Default . _Coerce

-- | The token for the next set of results.
dfsNextToken :: Lens' DescribeFleets (Maybe Text)
dfsNextToken = lens _dfsNextToken (\ s a -> s{_dfsNextToken = a})

-- | The ID of the EC2 Fleets.
dfsFleetIds :: Lens' DescribeFleets [Text]
dfsFleetIds = lens _dfsFleetIds (\ s a -> s{_dfsFleetIds = a}) . _Default . _Coerce

-- | Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is @DryRunOperation@ . Otherwise, it is @UnauthorizedOperation@ .
dfsDryRun :: Lens' DescribeFleets (Maybe Bool)
dfsDryRun = lens _dfsDryRun (\ s a -> s{_dfsDryRun = a})

-- | The maximum number of results to return in a single call. Specify a value between 1 and 1000. The default value is 1000. To retrieve the remaining results, make another call with the returned @NextToken@ value.
dfsMaxResults :: Lens' DescribeFleets (Maybe Int)
dfsMaxResults = lens _dfsMaxResults (\ s a -> s{_dfsMaxResults = a})

instance AWSRequest DescribeFleets where
        type Rs DescribeFleets = DescribeFleetsResponse
        request = postQuery ec2
        response
          = receiveXML
              (\ s h x ->
                 DescribeFleetsResponse' <$>
                   (x .@? "nextToken") <*>
                     (x .@? "fleetSet" .!@ mempty >>=
                        may (parseXMLList "item"))
                     <*> (pure (fromEnum s)))

instance Hashable DescribeFleets where

instance NFData DescribeFleets where

instance ToHeaders DescribeFleets where
        toHeaders = const mempty

instance ToPath DescribeFleets where
        toPath = const "/"

instance ToQuery DescribeFleets where
        toQuery DescribeFleets'{..}
          = mconcat
              ["Action" =: ("DescribeFleets" :: ByteString),
               "Version" =: ("2016-11-15" :: ByteString),
               toQuery (toQueryList "Filter" <$> _dfsFilters),
               "NextToken" =: _dfsNextToken,
               toQuery (toQueryList "FleetId" <$> _dfsFleetIds),
               "DryRun" =: _dfsDryRun,
               "MaxResults" =: _dfsMaxResults]

-- | /See:/ 'describeFleetsResponse' smart constructor.
data DescribeFleetsResponse = DescribeFleetsResponse'
  { _dfsrsNextToken      :: !(Maybe Text)
  , _dfsrsFleets         :: !(Maybe [FleetData])
  , _dfsrsResponseStatus :: !Int
  } deriving (Eq, Read, Show, Data, Typeable, Generic)


-- | Creates a value of 'DescribeFleetsResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dfsrsNextToken' - The token for the next set of results.
--
-- * 'dfsrsFleets' - The EC2 Fleets.
--
-- * 'dfsrsResponseStatus' - -- | The response status code.
describeFleetsResponse
    :: Int -- ^ 'dfsrsResponseStatus'
    -> DescribeFleetsResponse
describeFleetsResponse pResponseStatus_ =
  DescribeFleetsResponse'
    { _dfsrsNextToken = Nothing
    , _dfsrsFleets = Nothing
    , _dfsrsResponseStatus = pResponseStatus_
    }


-- | The token for the next set of results.
dfsrsNextToken :: Lens' DescribeFleetsResponse (Maybe Text)
dfsrsNextToken = lens _dfsrsNextToken (\ s a -> s{_dfsrsNextToken = a})

-- | The EC2 Fleets.
dfsrsFleets :: Lens' DescribeFleetsResponse [FleetData]
dfsrsFleets = lens _dfsrsFleets (\ s a -> s{_dfsrsFleets = a}) . _Default . _Coerce

-- | -- | The response status code.
dfsrsResponseStatus :: Lens' DescribeFleetsResponse Int
dfsrsResponseStatus = lens _dfsrsResponseStatus (\ s a -> s{_dfsrsResponseStatus = a})

instance NFData DescribeFleetsResponse where