{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}

-- | http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-applicationautoscaling-scalingpolicy-stepscalingpolicyconfiguration-stepadjustment.html

module Stratosphere.ResourceProperties.ApplicationAutoScalingScalingPolicyStepAdjustment where

import Control.Lens hiding ((.=))
import Data.Aeson
import Data.Maybe (catMaybes)
import Data.Monoid (mempty)
import Data.Text

import Stratosphere.Values


-- | Full data type definition for
-- ApplicationAutoScalingScalingPolicyStepAdjustment. See
-- 'applicationAutoScalingScalingPolicyStepAdjustment' for a more convenient
-- constructor.
data ApplicationAutoScalingScalingPolicyStepAdjustment =
  ApplicationAutoScalingScalingPolicyStepAdjustment
  { _applicationAutoScalingScalingPolicyStepAdjustmentMetricIntervalLowerBound :: Maybe (Val Double')
  , _applicationAutoScalingScalingPolicyStepAdjustmentMetricIntervalUpperBound :: Maybe (Val Double')
  , _applicationAutoScalingScalingPolicyStepAdjustmentScalingAdjustment :: Val Integer'
  } deriving (Show, Eq)

instance ToJSON ApplicationAutoScalingScalingPolicyStepAdjustment where
  toJSON ApplicationAutoScalingScalingPolicyStepAdjustment{..} =
    object $
    catMaybes
    [ ("MetricIntervalLowerBound" .=) <$> _applicationAutoScalingScalingPolicyStepAdjustmentMetricIntervalLowerBound
    , ("MetricIntervalUpperBound" .=) <$> _applicationAutoScalingScalingPolicyStepAdjustmentMetricIntervalUpperBound
    , Just ("ScalingAdjustment" .= _applicationAutoScalingScalingPolicyStepAdjustmentScalingAdjustment)
    ]

instance FromJSON ApplicationAutoScalingScalingPolicyStepAdjustment where
  parseJSON (Object obj) =
    ApplicationAutoScalingScalingPolicyStepAdjustment <$>
      obj .:? "MetricIntervalLowerBound" <*>
      obj .:? "MetricIntervalUpperBound" <*>
      obj .: "ScalingAdjustment"
  parseJSON _ = mempty

-- | Constructor for 'ApplicationAutoScalingScalingPolicyStepAdjustment'
-- containing required fields as arguments.
applicationAutoScalingScalingPolicyStepAdjustment
  :: Val Integer' -- ^ 'aasspsaScalingAdjustment'
  -> ApplicationAutoScalingScalingPolicyStepAdjustment
applicationAutoScalingScalingPolicyStepAdjustment scalingAdjustmentarg =
  ApplicationAutoScalingScalingPolicyStepAdjustment
  { _applicationAutoScalingScalingPolicyStepAdjustmentMetricIntervalLowerBound = Nothing
  , _applicationAutoScalingScalingPolicyStepAdjustmentMetricIntervalUpperBound = Nothing
  , _applicationAutoScalingScalingPolicyStepAdjustmentScalingAdjustment = scalingAdjustmentarg
  }

-- | http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-applicationautoscaling-scalingpolicy-stepscalingpolicyconfiguration-stepadjustment.html#cfn-applicationautoscaling-scalingpolicy-stepscalingpolicyconfiguration-stepadjustment-metricintervallowerbound
aasspsaMetricIntervalLowerBound :: Lens' ApplicationAutoScalingScalingPolicyStepAdjustment (Maybe (Val Double'))
aasspsaMetricIntervalLowerBound = lens _applicationAutoScalingScalingPolicyStepAdjustmentMetricIntervalLowerBound (\s a -> s { _applicationAutoScalingScalingPolicyStepAdjustmentMetricIntervalLowerBound = a })

-- | http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-applicationautoscaling-scalingpolicy-stepscalingpolicyconfiguration-stepadjustment.html#cfn-applicationautoscaling-scalingpolicy-stepscalingpolicyconfiguration-stepadjustment-metricintervalupperbound
aasspsaMetricIntervalUpperBound :: Lens' ApplicationAutoScalingScalingPolicyStepAdjustment (Maybe (Val Double'))
aasspsaMetricIntervalUpperBound = lens _applicationAutoScalingScalingPolicyStepAdjustmentMetricIntervalUpperBound (\s a -> s { _applicationAutoScalingScalingPolicyStepAdjustmentMetricIntervalUpperBound = a })

-- | http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-applicationautoscaling-scalingpolicy-stepscalingpolicyconfiguration-stepadjustment.html#cfn-applicationautoscaling-scalingpolicy-stepscalingpolicyconfiguration-stepadjustment-scalingadjustment
aasspsaScalingAdjustment :: Lens' ApplicationAutoScalingScalingPolicyStepAdjustment (Val Integer')
aasspsaScalingAdjustment = lens _applicationAutoScalingScalingPolicyStepAdjustmentScalingAdjustment (\s a -> s { _applicationAutoScalingScalingPolicyStepAdjustmentScalingAdjustment = a })