{-# 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.KMS.ListAliases
-- 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)
--
-- Lists all of the key aliases in the account.
--
-- /See:/ <http://docs.aws.amazon.com/kms/latest/APIReference/API_ListAliases.html AWS API Reference> for ListAliases.
--
-- This operation returns paginated results.
module Network.AWS.KMS.ListAliases
    (
    -- * Creating a Request
      listAliases
    , ListAliases
    -- * Request Lenses
    , laMarker
    , laLimit

    -- * Destructuring the Response
    , listAliasesResponse
    , ListAliasesResponse
    -- * Response Lenses
    , larsTruncated
    , larsAliases
    , larsNextMarker
    , larsResponseStatus
    ) where

import           Network.AWS.KMS.Types
import           Network.AWS.KMS.Types.Product
import           Network.AWS.Lens
import           Network.AWS.Pager
import           Network.AWS.Prelude
import           Network.AWS.Request
import           Network.AWS.Response

-- | /See:/ 'listAliases' smart constructor.
data ListAliases = ListAliases'
    { _laMarker :: !(Maybe Text)
    , _laLimit  :: !(Maybe Nat)
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'ListAliases' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'laMarker'
--
-- * 'laLimit'
listAliases
    :: ListAliases
listAliases =
    ListAliases'
    { _laMarker = Nothing
    , _laLimit = Nothing
    }

-- | Use this parameter only when paginating results and only in a subsequent
-- request after you\'ve received a response with truncated results. Set it
-- to the value of 'NextMarker' from the response you just received.
laMarker :: Lens' ListAliases (Maybe Text)
laMarker = lens _laMarker (\ s a -> s{_laMarker = a});

-- | When paginating results, specify the maximum number of items to return
-- in the response. If additional items exist beyond the number you
-- specify, the 'Truncated' element in the response is set to true.
--
-- This value is optional. If you include a value, it must be between 1 and
-- 100, inclusive. If you do not include a value, it defaults to 50.
laLimit :: Lens' ListAliases (Maybe Natural)
laLimit = lens _laLimit (\ s a -> s{_laLimit = a}) . mapping _Nat;

instance AWSPager ListAliases where
        page rq rs
          | stop (rs ^. larsTruncated) = Nothing
          | isNothing (rs ^. larsNextMarker) = Nothing
          | otherwise =
            Just $ rq & laMarker .~ rs ^. larsNextMarker

instance AWSRequest ListAliases where
        type Rs ListAliases = ListAliasesResponse
        request = postJSON kMS
        response
          = receiveJSON
              (\ s h x ->
                 ListAliasesResponse' <$>
                   (x .?> "Truncated") <*> (x .?> "Aliases" .!@ mempty)
                     <*> (x .?> "NextMarker")
                     <*> (pure (fromEnum s)))

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

instance ToJSON ListAliases where
        toJSON ListAliases'{..}
          = object
              (catMaybes
                 [("Marker" .=) <$> _laMarker,
                  ("Limit" .=) <$> _laLimit])

instance ToPath ListAliases where
        toPath = const "/"

instance ToQuery ListAliases where
        toQuery = const mempty

-- | /See:/ 'listAliasesResponse' smart constructor.
data ListAliasesResponse = ListAliasesResponse'
    { _larsTruncated      :: !(Maybe Bool)
    , _larsAliases        :: !(Maybe [AliasListEntry])
    , _larsNextMarker     :: !(Maybe Text)
    , _larsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'ListAliasesResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'larsTruncated'
--
-- * 'larsAliases'
--
-- * 'larsNextMarker'
--
-- * 'larsResponseStatus'
listAliasesResponse
    :: Int -- ^ 'larsResponseStatus'
    -> ListAliasesResponse
listAliasesResponse pResponseStatus_ =
    ListAliasesResponse'
    { _larsTruncated = Nothing
    , _larsAliases = Nothing
    , _larsNextMarker = Nothing
    , _larsResponseStatus = pResponseStatus_
    }

-- | A flag that indicates whether there are more items in the list. If your
-- results were truncated, you can use the 'Marker' parameter to make a
-- subsequent pagination request to retrieve more items in the list.
larsTruncated :: Lens' ListAliasesResponse (Maybe Bool)
larsTruncated = lens _larsTruncated (\ s a -> s{_larsTruncated = a});

-- | A list of key aliases in the user\'s account.
larsAliases :: Lens' ListAliasesResponse [AliasListEntry]
larsAliases = lens _larsAliases (\ s a -> s{_larsAliases = a}) . _Default . _Coerce;

-- | When 'Truncated' is true, this value is present and contains the value
-- to use for the 'Marker' parameter in a subsequent pagination request.
larsNextMarker :: Lens' ListAliasesResponse (Maybe Text)
larsNextMarker = lens _larsNextMarker (\ s a -> s{_larsNextMarker = a});

-- | The response status code.
larsResponseStatus :: Lens' ListAliasesResponse Int
larsResponseStatus = lens _larsResponseStatus (\ s a -> s{_larsResponseStatus = a});