{-# LANGUAGE DataKinds                   #-}
{-# LANGUAGE DeriveGeneric               #-}
{-# LANGUAGE FlexibleInstances           #-}
{-# LANGUAGE GeneralizedNewtypeDeriving  #-}
{-# LANGUAGE LambdaCase                  #-}
{-# LANGUAGE NoImplicitPrelude           #-}
{-# LANGUAGE OverloadedStrings           #-}
{-# LANGUAGE RecordWildCards             #-}
{-# LANGUAGE TypeFamilies                #-}

{-# OPTIONS_GHC -fno-warn-unused-imports #-}

-- Module      : Network.AWS.ELB.DisableAvailabilityZonesForLoadBalancer
-- Copyright   : (c) 2013-2014 Brendan Hay <brendan.g.hay@gmail.com>
-- License     : This Source Code Form is subject to the terms of
--               the Mozilla Public License, v. 2.0.
--               A copy of the MPL can be found in the LICENSE file or
--               you can obtain it at http://mozilla.org/MPL/2.0/.
-- Maintainer  : Brendan Hay <brendan.g.hay@gmail.com>
-- Stability   : experimental
-- Portability : non-portable (GHC extensions)
--
-- Derived from AWS service descriptions, licensed under Apache 2.0.

-- | Removes the specified EC2 Availability Zones from the set of configured
-- Availability Zones for the load balancer.
--
-- There must be at least one Availability Zone registered with a load
-- balancer at all times. Once an Availability Zone is removed, all the
-- instances registered with the load balancer that are in the removed
-- Availability Zone go into the /OutOfService/ state. Upon Availability Zone
-- removal, the load balancer attempts to equally balance the traffic among its
-- remaining usable Availability Zones. Trying to remove an Availability Zone
-- that was not associated with the load balancer does nothing.
--
-- For more information, see <http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/US_ShrinkLBApp04.html Disable an Availability Zone from a Load-BalancedApplication> in the /Elastic Load Balancing Developer Guide/.
--
-- <http://docs.aws.amazon.com/ElasticLoadBalancing/latest/APIReference/API_DisableAvailabilityZonesForLoadBalancer.html>
module Network.AWS.ELB.DisableAvailabilityZonesForLoadBalancer
    (
    -- * Request
      DisableAvailabilityZonesForLoadBalancer
    -- ** Request constructor
    , disableAvailabilityZonesForLoadBalancer
    -- ** Request lenses
    , dazflbAvailabilityZones
    , dazflbLoadBalancerName

    -- * Response
    , DisableAvailabilityZonesForLoadBalancerResponse
    -- ** Response constructor
    , disableAvailabilityZonesForLoadBalancerResponse
    -- ** Response lenses
    , dazflbrAvailabilityZones
    ) where

import Network.AWS.Prelude
import Network.AWS.Request.Query
import Network.AWS.ELB.Types
import qualified GHC.Exts

data DisableAvailabilityZonesForLoadBalancer = DisableAvailabilityZonesForLoadBalancer
    { _dazflbAvailabilityZones :: List "member" Text
    , _dazflbLoadBalancerName  :: Text
    } deriving (Eq, Ord, Show)

-- | 'DisableAvailabilityZonesForLoadBalancer' constructor.
--
-- The fields accessible through corresponding lenses are:
--
-- * 'dazflbAvailabilityZones' @::@ ['Text']
--
-- * 'dazflbLoadBalancerName' @::@ 'Text'
--
disableAvailabilityZonesForLoadBalancer :: Text -- ^ 'dazflbLoadBalancerName'
                                        -> DisableAvailabilityZonesForLoadBalancer
disableAvailabilityZonesForLoadBalancer p1 = DisableAvailabilityZonesForLoadBalancer
    { _dazflbLoadBalancerName  = p1
    , _dazflbAvailabilityZones = mempty
    }

-- | A list of Availability Zones to be removed from the load balancer.
--
-- There must be at least one Availability Zone registered with a load
-- balancer at all times. Specified Availability Zones must be in the same
-- region.
dazflbAvailabilityZones :: Lens' DisableAvailabilityZonesForLoadBalancer [Text]
dazflbAvailabilityZones =
    lens _dazflbAvailabilityZones (\s a -> s { _dazflbAvailabilityZones = a })
        . _List

-- | The name associated with the load balancer.
dazflbLoadBalancerName :: Lens' DisableAvailabilityZonesForLoadBalancer Text
dazflbLoadBalancerName =
    lens _dazflbLoadBalancerName (\s a -> s { _dazflbLoadBalancerName = a })

newtype DisableAvailabilityZonesForLoadBalancerResponse = DisableAvailabilityZonesForLoadBalancerResponse
    { _dazflbrAvailabilityZones :: List "member" Text
    } deriving (Eq, Ord, Show, Monoid, Semigroup)

instance GHC.Exts.IsList DisableAvailabilityZonesForLoadBalancerResponse where
    type Item DisableAvailabilityZonesForLoadBalancerResponse = Text

    fromList = DisableAvailabilityZonesForLoadBalancerResponse . GHC.Exts.fromList
    toList   = GHC.Exts.toList . _dazflbrAvailabilityZones

-- | 'DisableAvailabilityZonesForLoadBalancerResponse' constructor.
--
-- The fields accessible through corresponding lenses are:
--
-- * 'dazflbrAvailabilityZones' @::@ ['Text']
--
disableAvailabilityZonesForLoadBalancerResponse :: DisableAvailabilityZonesForLoadBalancerResponse
disableAvailabilityZonesForLoadBalancerResponse = DisableAvailabilityZonesForLoadBalancerResponse
    { _dazflbrAvailabilityZones = mempty
    }

-- | A list of updated Availability Zones for the load balancer.
dazflbrAvailabilityZones :: Lens' DisableAvailabilityZonesForLoadBalancerResponse [Text]
dazflbrAvailabilityZones =
    lens _dazflbrAvailabilityZones
        (\s a -> s { _dazflbrAvailabilityZones = a })
            . _List

instance ToPath DisableAvailabilityZonesForLoadBalancer where
    toPath = const "/"

instance ToQuery DisableAvailabilityZonesForLoadBalancer where
    toQuery DisableAvailabilityZonesForLoadBalancer{..} = mconcat
        [ "AvailabilityZones" =? _dazflbAvailabilityZones
        , "LoadBalancerName"  =? _dazflbLoadBalancerName
        ]

instance ToHeaders DisableAvailabilityZonesForLoadBalancer

instance AWSRequest DisableAvailabilityZonesForLoadBalancer where
    type Sv DisableAvailabilityZonesForLoadBalancer = ELB
    type Rs DisableAvailabilityZonesForLoadBalancer = DisableAvailabilityZonesForLoadBalancerResponse

    request  = post "DisableAvailabilityZonesForLoadBalancer"
    response = xmlResponse

instance FromXML DisableAvailabilityZonesForLoadBalancerResponse where
    parseXML = withElement "DisableAvailabilityZonesForLoadBalancerResult" $ \x -> DisableAvailabilityZonesForLoadBalancerResponse
        <$> x .@? "AvailabilityZones" .!@ mempty