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

-- | http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-subscriptionfilter.html

module Stratosphere.Resources.LogsSubscriptionFilter 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 LogsSubscriptionFilter. See
-- 'logsSubscriptionFilter' for a more convenient constructor.
data LogsSubscriptionFilter =
  LogsSubscriptionFilter
  { _logsSubscriptionFilterDestinationArn :: Val Text
  , _logsSubscriptionFilterFilterPattern :: Val Text
  , _logsSubscriptionFilterLogGroupName :: Val Text
  , _logsSubscriptionFilterRoleArn :: Maybe (Val Text)
  } deriving (Show, Eq)

instance ToJSON LogsSubscriptionFilter where
  toJSON LogsSubscriptionFilter{..} =
    object $
    catMaybes
    [ Just ("DestinationArn" .= _logsSubscriptionFilterDestinationArn)
    , Just ("FilterPattern" .= _logsSubscriptionFilterFilterPattern)
    , Just ("LogGroupName" .= _logsSubscriptionFilterLogGroupName)
    , ("RoleArn" .=) <$> _logsSubscriptionFilterRoleArn
    ]

instance FromJSON LogsSubscriptionFilter where
  parseJSON (Object obj) =
    LogsSubscriptionFilter <$>
      obj .: "DestinationArn" <*>
      obj .: "FilterPattern" <*>
      obj .: "LogGroupName" <*>
      obj .:? "RoleArn"
  parseJSON _ = mempty

-- | Constructor for 'LogsSubscriptionFilter' containing required fields as
-- arguments.
logsSubscriptionFilter
  :: Val Text -- ^ 'lsfDestinationArn'
  -> Val Text -- ^ 'lsfFilterPattern'
  -> Val Text -- ^ 'lsfLogGroupName'
  -> LogsSubscriptionFilter
logsSubscriptionFilter destinationArnarg filterPatternarg logGroupNamearg =
  LogsSubscriptionFilter
  { _logsSubscriptionFilterDestinationArn = destinationArnarg
  , _logsSubscriptionFilterFilterPattern = filterPatternarg
  , _logsSubscriptionFilterLogGroupName = logGroupNamearg
  , _logsSubscriptionFilterRoleArn = Nothing
  }

-- | http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-subscriptionfilter.html#cfn-cwl-subscriptionfilter-destinationarn
lsfDestinationArn :: Lens' LogsSubscriptionFilter (Val Text)
lsfDestinationArn = lens _logsSubscriptionFilterDestinationArn (\s a -> s { _logsSubscriptionFilterDestinationArn = a })

-- | http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-subscriptionfilter.html#cfn-cwl-subscriptionfilter-filterpattern
lsfFilterPattern :: Lens' LogsSubscriptionFilter (Val Text)
lsfFilterPattern = lens _logsSubscriptionFilterFilterPattern (\s a -> s { _logsSubscriptionFilterFilterPattern = a })

-- | http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-subscriptionfilter.html#cfn-cwl-subscriptionfilter-loggroupname
lsfLogGroupName :: Lens' LogsSubscriptionFilter (Val Text)
lsfLogGroupName = lens _logsSubscriptionFilterLogGroupName (\s a -> s { _logsSubscriptionFilterLogGroupName = a })

-- | http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-subscriptionfilter.html#cfn-cwl-subscriptionfilter-rolearn
lsfRoleArn :: Lens' LogsSubscriptionFilter (Maybe (Val Text))
lsfRoleArn = lens _logsSubscriptionFilterRoleArn (\s a -> s { _logsSubscriptionFilterRoleArn = a })