{-# 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.CloudTrail.DescribeTrails
-- Copyright   : (c) 2013-2016 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)
--
-- Retrieves settings for the trail associated with the current region for
-- your account.
module Network.AWS.CloudTrail.DescribeTrails
    (
    -- * Creating a Request
      describeTrails
    , DescribeTrails
    -- * Request Lenses
    , dtIncludeShadowTrails
    , dtTrailNameList

    -- * Destructuring the Response
    , describeTrailsResponse
    , DescribeTrailsResponse
    -- * Response Lenses
    , dtrsTrailList
    , dtrsResponseStatus
    ) where

import           Network.AWS.CloudTrail.Types
import           Network.AWS.CloudTrail.Types.Product
import           Network.AWS.Lens
import           Network.AWS.Prelude
import           Network.AWS.Request
import           Network.AWS.Response

-- | Returns information about the trail.
--
-- /See:/ 'describeTrails' smart constructor.
data DescribeTrails = DescribeTrails'
    { _dtIncludeShadowTrails :: !(Maybe Bool)
    , _dtTrailNameList       :: !(Maybe [Text])
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeTrails' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dtIncludeShadowTrails'
--
-- * 'dtTrailNameList'
describeTrails
    :: DescribeTrails
describeTrails =
    DescribeTrails'
    { _dtIncludeShadowTrails = Nothing
    , _dtTrailNameList = Nothing
    }

-- | Specifies whether to include shadow trails in the response. A shadow
-- trail is the replication in a region of a trail that was created in a
-- different region. The default is true.
dtIncludeShadowTrails :: Lens' DescribeTrails (Maybe Bool)
dtIncludeShadowTrails = lens _dtIncludeShadowTrails (\ s a -> s{_dtIncludeShadowTrails = a});

-- | Specifies a list of trail names, trail ARNs, or both, of the trails to
-- describe. The format of a trail ARN is
-- 'arn:aws:cloudtrail:us-east-1:123456789012:trail\/MyTrail'. If an empty
-- list is specified, information for the trail in the current region is
-- returned.
--
-- -   If an empty list is specified and 'IncludeShadowTrails' is false,
--     then information for all trails in the current region is returned.
-- -   If an empty list is specified and IncludeShadowTrails is null or
--     true, then information for all trails in the current region and any
--     associated shadow trails in other regions is returned.
--
-- If one or more trail names are specified, information is returned only
-- if the names match the names of trails belonging only to the current
-- region. To return information about a trail in another region, you must
-- specify its trail ARN.
dtTrailNameList :: Lens' DescribeTrails [Text]
dtTrailNameList = lens _dtTrailNameList (\ s a -> s{_dtTrailNameList = a}) . _Default . _Coerce;

instance AWSRequest DescribeTrails where
        type Rs DescribeTrails = DescribeTrailsResponse
        request = postJSON cloudTrail
        response
          = receiveJSON
              (\ s h x ->
                 DescribeTrailsResponse' <$>
                   (x .?> "trailList" .!@ mempty) <*>
                     (pure (fromEnum s)))

instance Hashable DescribeTrails

instance ToHeaders DescribeTrails where
        toHeaders
          = const
              (mconcat
                 ["X-Amz-Target" =#
                    ("com.amazonaws.cloudtrail.v20131101.CloudTrail_20131101.DescribeTrails"
                       :: ByteString),
                  "Content-Type" =#
                    ("application/x-amz-json-1.1" :: ByteString)])

instance ToJSON DescribeTrails where
        toJSON DescribeTrails'{..}
          = object
              (catMaybes
                 [("includeShadowTrails" .=) <$>
                    _dtIncludeShadowTrails,
                  ("trailNameList" .=) <$> _dtTrailNameList])

instance ToPath DescribeTrails where
        toPath = const "/"

instance ToQuery DescribeTrails where
        toQuery = const mempty

-- | Returns the objects or data listed below if successful. Otherwise,
-- returns an error.
--
-- /See:/ 'describeTrailsResponse' smart constructor.
data DescribeTrailsResponse = DescribeTrailsResponse'
    { _dtrsTrailList      :: !(Maybe [Trail])
    , _dtrsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeTrailsResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dtrsTrailList'
--
-- * 'dtrsResponseStatus'
describeTrailsResponse
    :: Int -- ^ 'dtrsResponseStatus'
    -> DescribeTrailsResponse
describeTrailsResponse pResponseStatus_ =
    DescribeTrailsResponse'
    { _dtrsTrailList = Nothing
    , _dtrsResponseStatus = pResponseStatus_
    }

-- | The list of trail objects.
dtrsTrailList :: Lens' DescribeTrailsResponse [Trail]
dtrsTrailList = lens _dtrsTrailList (\ s a -> s{_dtrsTrailList = a}) . _Default . _Coerce;

-- | The response status code.
dtrsResponseStatus :: Lens' DescribeTrailsResponse Int
dtrsResponseStatus = lens _dtrsResponseStatus (\ s a -> s{_dtrsResponseStatus = a});