{-# 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.DirectoryService.DescribeTrusts
-- 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)
--
-- Obtains information about the trust relationships for this account.
--
-- If no input parameters are provided, such as DirectoryId or TrustIds,
-- this request describes all the trust relationships belonging to the
-- account.
module Network.AWS.DirectoryService.DescribeTrusts
    (
    -- * Creating a Request
      describeTrusts
    , DescribeTrusts
    -- * Request Lenses
    , dtDirectoryId
    , dtNextToken
    , dtTrustIds
    , dtLimit

    -- * Destructuring the Response
    , describeTrustsResponse
    , DescribeTrustsResponse
    -- * Response Lenses
    , dtrsNextToken
    , dtrsTrusts
    , dtrsResponseStatus
    ) where

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

-- | Describes the trust relationships for a particular Microsoft AD in the
-- AWS cloud. If no input parameters are are provided, such as directory ID
-- or trust ID, this request describes all the trust relationships.
--
-- /See:/ 'describeTrusts' smart constructor.
data DescribeTrusts = DescribeTrusts'
    { _dtDirectoryId :: !(Maybe Text)
    , _dtNextToken   :: !(Maybe Text)
    , _dtTrustIds    :: !(Maybe [Text])
    , _dtLimit       :: !(Maybe Nat)
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeTrusts' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dtDirectoryId'
--
-- * 'dtNextToken'
--
-- * 'dtTrustIds'
--
-- * 'dtLimit'
describeTrusts
    :: DescribeTrusts
describeTrusts =
    DescribeTrusts'
    { _dtDirectoryId = Nothing
    , _dtNextToken = Nothing
    , _dtTrustIds = Nothing
    , _dtLimit = Nothing
    }

-- | The Directory ID of the AWS directory that is a part of the requested
-- trust relationship.
dtDirectoryId :: Lens' DescribeTrusts (Maybe Text)
dtDirectoryId = lens _dtDirectoryId (\ s a -> s{_dtDirectoryId = a});

-- | The /DescribeTrustsResult.NextToken/ value from a previous call to
-- < DescribeTrusts>. Pass null if this is the first call.
dtNextToken :: Lens' DescribeTrusts (Maybe Text)
dtNextToken = lens _dtNextToken (\ s a -> s{_dtNextToken = a});

-- | A list of identifiers of the trust relationships for which to obtain the
-- information. If this member is null, all trust relationships that belong
-- to the current account are returned.
--
-- An empty list results in an 'InvalidParameterException' being thrown.
dtTrustIds :: Lens' DescribeTrusts [Text]
dtTrustIds = lens _dtTrustIds (\ s a -> s{_dtTrustIds = a}) . _Default . _Coerce;

-- | The maximum number of objects to return.
dtLimit :: Lens' DescribeTrusts (Maybe Natural)
dtLimit = lens _dtLimit (\ s a -> s{_dtLimit = a}) . mapping _Nat;

instance AWSRequest DescribeTrusts where
        type Rs DescribeTrusts = DescribeTrustsResponse
        request = postJSON directoryService
        response
          = receiveJSON
              (\ s h x ->
                 DescribeTrustsResponse' <$>
                   (x .?> "NextToken") <*> (x .?> "Trusts" .!@ mempty)
                     <*> (pure (fromEnum s)))

instance Hashable DescribeTrusts

instance ToHeaders DescribeTrusts where
        toHeaders
          = const
              (mconcat
                 ["X-Amz-Target" =#
                    ("DirectoryService_20150416.DescribeTrusts" ::
                       ByteString),
                  "Content-Type" =#
                    ("application/x-amz-json-1.1" :: ByteString)])

instance ToJSON DescribeTrusts where
        toJSON DescribeTrusts'{..}
          = object
              (catMaybes
                 [("DirectoryId" .=) <$> _dtDirectoryId,
                  ("NextToken" .=) <$> _dtNextToken,
                  ("TrustIds" .=) <$> _dtTrustIds,
                  ("Limit" .=) <$> _dtLimit])

instance ToPath DescribeTrusts where
        toPath = const "/"

instance ToQuery DescribeTrusts where
        toQuery = const mempty

-- | /See:/ 'describeTrustsResponse' smart constructor.
data DescribeTrustsResponse = DescribeTrustsResponse'
    { _dtrsNextToken      :: !(Maybe Text)
    , _dtrsTrusts         :: !(Maybe [Trust])
    , _dtrsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DescribeTrustsResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dtrsNextToken'
--
-- * 'dtrsTrusts'
--
-- * 'dtrsResponseStatus'
describeTrustsResponse
    :: Int -- ^ 'dtrsResponseStatus'
    -> DescribeTrustsResponse
describeTrustsResponse pResponseStatus_ =
    DescribeTrustsResponse'
    { _dtrsNextToken = Nothing
    , _dtrsTrusts = Nothing
    , _dtrsResponseStatus = pResponseStatus_
    }

-- | If not null, more results are available. Pass this value for the
-- /NextToken/ parameter in a subsequent call to < DescribeTrusts> to
-- retrieve the next set of items.
dtrsNextToken :: Lens' DescribeTrustsResponse (Maybe Text)
dtrsNextToken = lens _dtrsNextToken (\ s a -> s{_dtrsNextToken = a});

-- | The list of Trust objects that were retrieved.
--
-- It is possible that this list contains less than the number of items
-- specified in the /Limit/ member of the request. This occurs if there are
-- less than the requested number of items left to retrieve, or if the
-- limitations of the operation have been exceeded.
dtrsTrusts :: Lens' DescribeTrustsResponse [Trust]
dtrsTrusts = lens _dtrsTrusts (\ s a -> s{_dtrsTrusts = a}) . _Default . _Coerce;

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