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

-- | http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpc-gateway-attachment.html

module Stratosphere.Resources.EC2VPCGatewayAttachment 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 EC2VPCGatewayAttachment. See
-- 'ec2VPCGatewayAttachment' for a more convenient constructor.
data EC2VPCGatewayAttachment =
  EC2VPCGatewayAttachment
  { _eC2VPCGatewayAttachmentInternetGatewayId :: Maybe (Val Text)
  , _eC2VPCGatewayAttachmentVpcId :: Val Text
  , _eC2VPCGatewayAttachmentVpnGatewayId :: Maybe (Val Text)
  } deriving (Show, Eq)

instance ToJSON EC2VPCGatewayAttachment where
  toJSON EC2VPCGatewayAttachment{..} =
    object $
    catMaybes
    [ ("InternetGatewayId" .=) <$> _eC2VPCGatewayAttachmentInternetGatewayId
    , Just ("VpcId" .= _eC2VPCGatewayAttachmentVpcId)
    , ("VpnGatewayId" .=) <$> _eC2VPCGatewayAttachmentVpnGatewayId
    ]

instance FromJSON EC2VPCGatewayAttachment where
  parseJSON (Object obj) =
    EC2VPCGatewayAttachment <$>
      obj .:? "InternetGatewayId" <*>
      obj .: "VpcId" <*>
      obj .:? "VpnGatewayId"
  parseJSON _ = mempty

-- | Constructor for 'EC2VPCGatewayAttachment' containing required fields as
-- arguments.
ec2VPCGatewayAttachment
  :: Val Text -- ^ 'ecvpcgaVpcId'
  -> EC2VPCGatewayAttachment
ec2VPCGatewayAttachment vpcIdarg =
  EC2VPCGatewayAttachment
  { _eC2VPCGatewayAttachmentInternetGatewayId = Nothing
  , _eC2VPCGatewayAttachmentVpcId = vpcIdarg
  , _eC2VPCGatewayAttachmentVpnGatewayId = Nothing
  }

-- | http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpc-gateway-attachment.html#cfn-ec2-vpcgatewayattachment-internetgatewayid
ecvpcgaInternetGatewayId :: Lens' EC2VPCGatewayAttachment (Maybe (Val Text))
ecvpcgaInternetGatewayId = lens _eC2VPCGatewayAttachmentInternetGatewayId (\s a -> s { _eC2VPCGatewayAttachmentInternetGatewayId = a })

-- | http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpc-gateway-attachment.html#cfn-ec2-vpcgatewayattachment-vpcid
ecvpcgaVpcId :: Lens' EC2VPCGatewayAttachment (Val Text)
ecvpcgaVpcId = lens _eC2VPCGatewayAttachmentVpcId (\s a -> s { _eC2VPCGatewayAttachmentVpcId = a })

-- | http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpc-gateway-attachment.html#cfn-ec2-vpcgatewayattachment-vpngatewayid
ecvpcgaVpnGatewayId :: Lens' EC2VPCGatewayAttachment (Maybe (Val Text))
ecvpcgaVpnGatewayId = lens _eC2VPCGatewayAttachmentVpnGatewayId (\s a -> s { _eC2VPCGatewayAttachmentVpnGatewayId = a })