{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DeriveGeneric      #-}
{-# LANGUAGE OverloadedStrings  #-}
{-# LANGUAGE RecordWildCards    #-}
{-# LANGUAGE TypeFamilies       #-}

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

-- Derived from AWS service descriptions, licensed under Apache 2.0.

-- |
-- Module      : Network.AWS.EC2.DescribeVPCAttribute
-- Copyright   : (c) 2013-2015 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay <brendan.g.hay@gmail.com>
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Describes the specified attribute of the specified VPC. You can specify
-- only one attribute at a time.
--
-- /See:/ <http://docs.aws.amazon.com/AWSEC2/latest/APIReference/ApiReference-query-DescribeVPCAttribute.html AWS API Reference> for DescribeVPCAttribute.
module Network.AWS.EC2.DescribeVPCAttribute
    (
    -- * Creating a Request
      describeVPCAttribute
    , DescribeVPCAttribute
    -- * Request Lenses
    , dvpcaAttribute
    , dvpcaDryRun
    , dvpcaVPCId

    -- * Destructuring the Response
    , describeVPCAttributeResponse
    , DescribeVPCAttributeResponse
    -- * Response Lenses
    , dvpcarsEnableDNSHostnames
    , dvpcarsEnableDNSSupport
    , dvpcarsVPCId
    , dvpcarsStatus
    ) where

import           Network.AWS.EC2.Types
import           Network.AWS.EC2.Types.Product
import           Network.AWS.Prelude
import           Network.AWS.Request
import           Network.AWS.Response

-- | /See:/ 'describeVPCAttribute' smart constructor.
data DescribeVPCAttribute = DescribeVPCAttribute'
    { _dvpcaAttribute :: !(Maybe VPCAttributeName)
    , _dvpcaDryRun    :: !(Maybe Bool)
    , _dvpcaVPCId     :: !Text
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeVPCAttribute' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dvpcaAttribute'
--
-- * 'dvpcaDryRun'
--
-- * 'dvpcaVPCId'
describeVPCAttribute
    :: Text -- ^ 'dvpcaVPCId'
    -> DescribeVPCAttribute
describeVPCAttribute pVPCId_ =
    DescribeVPCAttribute'
    { _dvpcaAttribute = Nothing
    , _dvpcaDryRun = Nothing
    , _dvpcaVPCId = pVPCId_
    }

-- | The VPC attribute.
dvpcaAttribute :: Lens' DescribeVPCAttribute (Maybe VPCAttributeName)
dvpcaAttribute = lens _dvpcaAttribute (\ s a -> s{_dvpcaAttribute = a});

-- | Checks whether you have the required permissions for the action, without
-- actually making the request, and provides an error response. If you have
-- the required permissions, the error response is 'DryRunOperation'.
-- Otherwise, it is 'UnauthorizedOperation'.
dvpcaDryRun :: Lens' DescribeVPCAttribute (Maybe Bool)
dvpcaDryRun = lens _dvpcaDryRun (\ s a -> s{_dvpcaDryRun = a});

-- | The ID of the VPC.
dvpcaVPCId :: Lens' DescribeVPCAttribute Text
dvpcaVPCId = lens _dvpcaVPCId (\ s a -> s{_dvpcaVPCId = a});

instance AWSRequest DescribeVPCAttribute where
        type Sv DescribeVPCAttribute = EC2
        type Rs DescribeVPCAttribute =
             DescribeVPCAttributeResponse
        request = post
        response
          = receiveXML
              (\ s h x ->
                 DescribeVPCAttributeResponse' <$>
                   (x .@? "enableDnsHostnames") <*>
                     (x .@? "enableDnsSupport")
                     <*> (x .@? "vpcId")
                     <*> (pure (fromEnum s)))

instance ToHeaders DescribeVPCAttribute where
        toHeaders = const mempty

instance ToPath DescribeVPCAttribute where
        toPath = const "/"

instance ToQuery DescribeVPCAttribute where
        toQuery DescribeVPCAttribute'{..}
          = mconcat
              ["Action" =: ("DescribeVpcAttribute" :: ByteString),
               "Version" =: ("2015-04-15" :: ByteString),
               "Attribute" =: _dvpcaAttribute,
               "DryRun" =: _dvpcaDryRun, "VpcId" =: _dvpcaVPCId]

-- | /See:/ 'describeVPCAttributeResponse' smart constructor.
data DescribeVPCAttributeResponse = DescribeVPCAttributeResponse'
    { _dvpcarsEnableDNSHostnames :: !(Maybe AttributeBooleanValue)
    , _dvpcarsEnableDNSSupport   :: !(Maybe AttributeBooleanValue)
    , _dvpcarsVPCId              :: !(Maybe Text)
    , _dvpcarsStatus             :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeVPCAttributeResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dvpcarsEnableDNSHostnames'
--
-- * 'dvpcarsEnableDNSSupport'
--
-- * 'dvpcarsVPCId'
--
-- * 'dvpcarsStatus'
describeVPCAttributeResponse
    :: Int -- ^ 'dvpcarsStatus'
    -> DescribeVPCAttributeResponse
describeVPCAttributeResponse pStatus_ =
    DescribeVPCAttributeResponse'
    { _dvpcarsEnableDNSHostnames = Nothing
    , _dvpcarsEnableDNSSupport = Nothing
    , _dvpcarsVPCId = Nothing
    , _dvpcarsStatus = pStatus_
    }

-- | Indicates whether the instances launched in the VPC get DNS hostnames.
-- If this attribute is 'true', instances in the VPC get DNS hostnames;
-- otherwise, they do not.
dvpcarsEnableDNSHostnames :: Lens' DescribeVPCAttributeResponse (Maybe AttributeBooleanValue)
dvpcarsEnableDNSHostnames = lens _dvpcarsEnableDNSHostnames (\ s a -> s{_dvpcarsEnableDNSHostnames = a});

-- | Indicates whether DNS resolution is enabled for the VPC. If this
-- attribute is 'true', the Amazon DNS server resolves DNS hostnames for
-- your instances to their corresponding IP addresses; otherwise, it does
-- not.
dvpcarsEnableDNSSupport :: Lens' DescribeVPCAttributeResponse (Maybe AttributeBooleanValue)
dvpcarsEnableDNSSupport = lens _dvpcarsEnableDNSSupport (\ s a -> s{_dvpcarsEnableDNSSupport = a});

-- | The ID of the VPC.
dvpcarsVPCId :: Lens' DescribeVPCAttributeResponse (Maybe Text)
dvpcarsVPCId = lens _dvpcarsVPCId (\ s a -> s{_dvpcarsVPCId = a});

-- | The response status code.
dvpcarsStatus :: Lens' DescribeVPCAttributeResponse Int
dvpcarsStatus = lens _dvpcarsStatus (\ s a -> s{_dvpcarsStatus = a});