{-# 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.AutoScaling.CreateAutoScalingGroup
-- 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)

-- | Creates an Auto Scaling group with the specified name and attributes. If
-- you exceed your maximum limit of Auto Scaling groups, which by default is
-- 20 per region, the call fails. For information about viewing and updating
-- these limits, see DescribeAccountLimits.
--
-- <http://docs.aws.amazon.com/AutoScaling/latest/APIReference/API_CreateAutoScalingGroup.html>
module Network.AWS.AutoScaling.CreateAutoScalingGroup
    (
    -- * Request
      CreateAutoScalingGroup
    -- ** Request constructor
    , createAutoScalingGroup
    -- ** Request lenses
    , casgAutoScalingGroupName
    , casgAvailabilityZones
    , casgDefaultCooldown
    , casgDesiredCapacity
    , casgHealthCheckGracePeriod
    , casgHealthCheckType
    , casgInstanceId
    , casgLaunchConfigurationName
    , casgLoadBalancerNames
    , casgMaxSize
    , casgMinSize
    , casgPlacementGroup
    , casgTags
    , casgTerminationPolicies
    , casgVPCZoneIdentifier

    -- * Response
    , CreateAutoScalingGroupResponse
    -- ** Response constructor
    , createAutoScalingGroupResponse
    ) where

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

data CreateAutoScalingGroup = CreateAutoScalingGroup
    { _casgAutoScalingGroupName    :: Text
    , _casgAvailabilityZones       :: List1 "AvailabilityZones" Text
    , _casgDefaultCooldown         :: Maybe Int
    , _casgDesiredCapacity         :: Maybe Int
    , _casgHealthCheckGracePeriod  :: Maybe Int
    , _casgHealthCheckType         :: Maybe Text
    , _casgInstanceId              :: Maybe Text
    , _casgLaunchConfigurationName :: Maybe Text
    , _casgLoadBalancerNames       :: List "LoadBalancerNames" Text
    , _casgMaxSize                 :: Int
    , _casgMinSize                 :: Int
    , _casgPlacementGroup          :: Maybe Text
    , _casgTags                    :: List "Tags" Tag
    , _casgTerminationPolicies     :: List "TerminationPolicies" Text
    , _casgVPCZoneIdentifier       :: Maybe Text
    } deriving (Eq, Show)

-- | 'CreateAutoScalingGroup' constructor.
--
-- The fields accessible through corresponding lenses are:
--
-- * 'casgAutoScalingGroupName' @::@ 'Text'
--
-- * 'casgAvailabilityZones' @::@ 'NonEmpty' 'Text'
--
-- * 'casgDefaultCooldown' @::@ 'Maybe' 'Int'
--
-- * 'casgDesiredCapacity' @::@ 'Maybe' 'Int'
--
-- * 'casgHealthCheckGracePeriod' @::@ 'Maybe' 'Int'
--
-- * 'casgHealthCheckType' @::@ 'Maybe' 'Text'
--
-- * 'casgInstanceId' @::@ 'Maybe' 'Text'
--
-- * 'casgLaunchConfigurationName' @::@ 'Maybe' 'Text'
--
-- * 'casgLoadBalancerNames' @::@ ['Text']
--
-- * 'casgMaxSize' @::@ 'Int'
--
-- * 'casgMinSize' @::@ 'Int'
--
-- * 'casgPlacementGroup' @::@ 'Maybe' 'Text'
--
-- * 'casgTags' @::@ ['Tag']
--
-- * 'casgTerminationPolicies' @::@ ['Text']
--
-- * 'casgVPCZoneIdentifier' @::@ 'Maybe' 'Text'
--
createAutoScalingGroup :: Text -- ^ 'casgAutoScalingGroupName'
                       -> Int -- ^ 'casgMinSize'
                       -> Int -- ^ 'casgMaxSize'
                       -> NonEmpty Text -- ^ 'casgAvailabilityZones'
                       -> CreateAutoScalingGroup
createAutoScalingGroup p1 p2 p3 p4 = CreateAutoScalingGroup
    { _casgAutoScalingGroupName    = p1
    , _casgMinSize                 = p2
    , _casgMaxSize                 = p3
    , _casgAvailabilityZones       = withIso _List1 (const id) p4
    , _casgLaunchConfigurationName = Nothing
    , _casgInstanceId              = Nothing
    , _casgDesiredCapacity         = Nothing
    , _casgDefaultCooldown         = Nothing
    , _casgLoadBalancerNames       = mempty
    , _casgHealthCheckType         = Nothing
    , _casgHealthCheckGracePeriod  = Nothing
    , _casgPlacementGroup          = Nothing
    , _casgVPCZoneIdentifier       = Nothing
    , _casgTerminationPolicies     = mempty
    , _casgTags                    = mempty
    }

-- | The name of the group. This name must be unique within the scope of your
-- AWS account.
casgAutoScalingGroupName :: Lens' CreateAutoScalingGroup Text
casgAutoScalingGroupName =
    lens _casgAutoScalingGroupName
        (\s a -> s { _casgAutoScalingGroupName = a })

-- | One or more Availability Zones for the group. This parameter is optional
-- if you specify subnets using the VPCZoneIdentifier parameter.
casgAvailabilityZones :: Lens' CreateAutoScalingGroup (NonEmpty Text)
casgAvailabilityZones =
    lens _casgAvailabilityZones (\s a -> s { _casgAvailabilityZones = a })
        . _List1

-- | The amount of time, in seconds, after a scaling activity completes before
-- another scaling activity can start. If DefaultCooldown is not specified,
-- the default value is 300. For more information, see Understanding Auto
-- Scaling Cooldowns in the Auto Scaling Developer Guide.
casgDefaultCooldown :: Lens' CreateAutoScalingGroup (Maybe Int)
casgDefaultCooldown =
    lens _casgDefaultCooldown (\s a -> s { _casgDefaultCooldown = a })

-- | The number of EC2 instances that should be running in the group. This
-- value must be greater than or equal to the minimum size of the group and
-- less than or equal to the maximum size of the group.
casgDesiredCapacity :: Lens' CreateAutoScalingGroup (Maybe Int)
casgDesiredCapacity =
    lens _casgDesiredCapacity (\s a -> s { _casgDesiredCapacity = a })

-- | The amount of time, in seconds, after an EC2 instance comes into service
-- that Auto Scaling starts checking its health. During this time, any
-- health check failures for the instance are ignored. This parameter is
-- required if you are adding an ELB health check. Frequently, new instances
-- need to warm up, briefly, before they can pass a health check. To provide
-- ample warm-up time, set the health check grace period of the group to
-- match the expected startup period of your application. For more
-- information, see Add an Elastic Load Balancing Health Check to Your Auto
-- Scaling Group in the Auto Scaling Developer Guide.
casgHealthCheckGracePeriod :: Lens' CreateAutoScalingGroup (Maybe Int)
casgHealthCheckGracePeriod =
    lens _casgHealthCheckGracePeriod
        (\s a -> s { _casgHealthCheckGracePeriod = a })

-- | The service to use for the health checks. The valid values are EC2 and
-- ELB. By default, health checks use Amazon EC2 instance status checks to
-- determine the health of an instance. For more information, see Health
-- Checks.
casgHealthCheckType :: Lens' CreateAutoScalingGroup (Maybe Text)
casgHealthCheckType =
    lens _casgHealthCheckType (\s a -> s { _casgHealthCheckType = a })

-- | The ID of the EC2 instance used to create a launch configuration for the
-- group. Alternatively, use the LaunchConfigurationName parameter to
-- specify a launch configuration instead of an EC2 instance. When you
-- specify an ID of an instance, Auto Scaling creates a new launch
-- configuration and associates it with the group. This launch configuration
-- derives its attributes from the specified instance, with the exception of
-- the block device mapping. For more information, see Create an Auto
-- Scaling Group Using an EC2 Instance ID in the Auto Scaling Developer
-- Guide.
casgInstanceId :: Lens' CreateAutoScalingGroup (Maybe Text)
casgInstanceId = lens _casgInstanceId (\s a -> s { _casgInstanceId = a })

-- | The name of the launch configuration. Alternatively, use the InstanceId
-- parameter to specify an EC2 instance instead of a launch configuration.
casgLaunchConfigurationName :: Lens' CreateAutoScalingGroup (Maybe Text)
casgLaunchConfigurationName =
    lens _casgLaunchConfigurationName
        (\s a -> s { _casgLaunchConfigurationName = a })

-- | One or more load balancers. For more information, see Load Balance Your
-- Auto Scaling Group in the Auto Scaling Developer Guide.
casgLoadBalancerNames :: Lens' CreateAutoScalingGroup [Text]
casgLoadBalancerNames =
    lens _casgLoadBalancerNames (\s a -> s { _casgLoadBalancerNames = a })
        . _List

-- | The maximum size of the group.
casgMaxSize :: Lens' CreateAutoScalingGroup Int
casgMaxSize = lens _casgMaxSize (\s a -> s { _casgMaxSize = a })

-- | The minimum size of the group.
casgMinSize :: Lens' CreateAutoScalingGroup Int
casgMinSize = lens _casgMinSize (\s a -> s { _casgMinSize = a })

-- | The name of the placement group into which you'll launch your instances,
-- if any. For more information, see Placement Groups.
casgPlacementGroup :: Lens' CreateAutoScalingGroup (Maybe Text)
casgPlacementGroup =
    lens _casgPlacementGroup (\s a -> s { _casgPlacementGroup = a })

-- | The tag to be created or updated. Each tag should be defined by its
-- resource type, resource ID, key, value, and a propagate flag. Valid
-- values: key=value, value=value, propagate=true or false. Value and
-- propagate are optional parameters. For more information, see Add, Modify,
-- or Remove Auto Scaling Group Tags in the Auto Scaling Developer Guide.
casgTags :: Lens' CreateAutoScalingGroup [Tag]
casgTags = lens _casgTags (\s a -> s { _casgTags = a }) . _List

-- | One or more termination policies used to select the instance to
-- terminate. These policies are executed in the order that they are listed.
-- For more information, see Choosing a Termination Policy for Your Auto
-- Scaling Group in the Auto Scaling Developer Guide.
casgTerminationPolicies :: Lens' CreateAutoScalingGroup [Text]
casgTerminationPolicies =
    lens _casgTerminationPolicies (\s a -> s { _casgTerminationPolicies = a })
        . _List

-- | A comma-separated list of subnet identifiers for your virtual private
-- cloud (VPC). If you specify subnets and Availability Zones with this
-- call, ensure that the subnets' Availability Zones match the Availability
-- Zones specified. For more information, see Auto Scaling and Amazon VPC in
-- the Auto Scaling Developer Guide.
casgVPCZoneIdentifier :: Lens' CreateAutoScalingGroup (Maybe Text)
casgVPCZoneIdentifier =
    lens _casgVPCZoneIdentifier (\s a -> s { _casgVPCZoneIdentifier = a })

data CreateAutoScalingGroupResponse = CreateAutoScalingGroupResponse
    deriving (Eq, Ord, Show, Generic)

-- | 'CreateAutoScalingGroupResponse' constructor.
createAutoScalingGroupResponse :: CreateAutoScalingGroupResponse
createAutoScalingGroupResponse = CreateAutoScalingGroupResponse

instance ToPath CreateAutoScalingGroup where
    toPath = const "/"

instance ToQuery CreateAutoScalingGroup where
    toQuery CreateAutoScalingGroup{..} = mconcat
        [ "AutoScalingGroupName"    =? _casgAutoScalingGroupName
        , "AvailabilityZones"       =? _casgAvailabilityZones
        , "DefaultCooldown"         =? _casgDefaultCooldown
        , "DesiredCapacity"         =? _casgDesiredCapacity
        , "HealthCheckGracePeriod"  =? _casgHealthCheckGracePeriod
        , "HealthCheckType"         =? _casgHealthCheckType
        , "InstanceId"              =? _casgInstanceId
        , "LaunchConfigurationName" =? _casgLaunchConfigurationName
        , "LoadBalancerNames"       =? _casgLoadBalancerNames
        , "MaxSize"                 =? _casgMaxSize
        , "MinSize"                 =? _casgMinSize
        , "PlacementGroup"          =? _casgPlacementGroup
        , "Tags"                    =? _casgTags
        , "TerminationPolicies"     =? _casgTerminationPolicies
        , "VPCZoneIdentifier"       =? _casgVPCZoneIdentifier
        ]

instance ToHeaders CreateAutoScalingGroup

instance AWSRequest CreateAutoScalingGroup where
    type Sv CreateAutoScalingGroup = AutoScaling
    type Rs CreateAutoScalingGroup = CreateAutoScalingGroupResponse

    request  = post "CreateAutoScalingGroup"
    response = nullResponse CreateAutoScalingGroupResponse