{-# LANGUAGE DataKinds                   #-}
{-# LANGUAGE DeriveGeneric               #-}
{-# LANGUAGE FlexibleInstances           #-}
{-# LANGUAGE GeneralizedNewtypeDeriving  #-}
{-# LANGUAGE LambdaCase                  #-}
{-# LANGUAGE NoImplicitPrelude           #-}
{-# LANGUAGE OverloadedStrings           #-}
{-# LANGUAGE RecordWildCards             #-}
{-# LANGUAGE TypeFamilies                #-}

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

-- Module      : Network.AWS.StorageGateway.DescribeTapeArchives
-- Copyright   : (c) 2013-2014 Brendan Hay <brendan.g.hay@gmail.com>
-- License     : This Source Code Form is subject to the terms of
--               the Mozilla Public License, v. 2.0.
--               A copy of the MPL can be found in the LICENSE file or
--               you can obtain it at http://mozilla.org/MPL/2.0/.
-- Maintainer  : Brendan Hay <brendan.g.hay@gmail.com>
-- Stability   : experimental
-- Portability : non-portable (GHC extensions)
--
-- Derived from AWS service descriptions, licensed under Apache 2.0.

-- | Returns a description of specified virtual tapes in the virtual tape shelf
-- (VTS).
--
-- If a specific 'TapeARN' is not specified, AWS Storage Gateway returns a
-- description of all virtual tapes found in the VTS associated with your
-- account.
--
-- <http://docs.aws.amazon.com/storagegateway/latest/APIReference/API_DescribeTapeArchives.html>
module Network.AWS.StorageGateway.DescribeTapeArchives
    (
    -- * Request
      DescribeTapeArchives
    -- ** Request constructor
    , describeTapeArchives
    -- ** Request lenses
    , dtaLimit
    , dtaMarker
    , dtaTapeARNs

    -- * Response
    , DescribeTapeArchivesResponse
    -- ** Response constructor
    , describeTapeArchivesResponse
    -- ** Response lenses
    , dtarMarker
    , dtarTapeArchives
    ) where

import Network.AWS.Prelude
import Network.AWS.Request.JSON
import Network.AWS.StorageGateway.Types
import qualified GHC.Exts

data DescribeTapeArchives = DescribeTapeArchives
    { _dtaLimit    :: Maybe Nat
    , _dtaMarker   :: Maybe Text
    , _dtaTapeARNs :: List "TapeARNs" Text
    } deriving (Eq, Ord, Read, Show)

-- | 'DescribeTapeArchives' constructor.
--
-- The fields accessible through corresponding lenses are:
--
-- * 'dtaLimit' @::@ 'Maybe' 'Natural'
--
-- * 'dtaMarker' @::@ 'Maybe' 'Text'
--
-- * 'dtaTapeARNs' @::@ ['Text']
--
describeTapeArchives :: DescribeTapeArchives
describeTapeArchives = DescribeTapeArchives
    { _dtaTapeARNs = mempty
    , _dtaMarker   = Nothing
    , _dtaLimit    = Nothing
    }

-- | Specifies that the number of virtual tapes descried be limited to the
-- specified number.
dtaLimit :: Lens' DescribeTapeArchives (Maybe Natural)
dtaLimit = lens _dtaLimit (\s a -> s { _dtaLimit = a }) . mapping _Nat

-- | An opaque string that indicates the position at which to begin describing
-- virtual tapes.
dtaMarker :: Lens' DescribeTapeArchives (Maybe Text)
dtaMarker = lens _dtaMarker (\s a -> s { _dtaMarker = a })

-- | Specifies one or more unique Amazon Resource Names (ARNs) that represent the
-- virtual tapes you want to describe.
dtaTapeARNs :: Lens' DescribeTapeArchives [Text]
dtaTapeARNs = lens _dtaTapeARNs (\s a -> s { _dtaTapeARNs = a }) . _List

data DescribeTapeArchivesResponse = DescribeTapeArchivesResponse
    { _dtarMarker       :: Maybe Text
    , _dtarTapeArchives :: List "TapeArchives" TapeArchive
    } deriving (Eq, Read, Show)

-- | 'DescribeTapeArchivesResponse' constructor.
--
-- The fields accessible through corresponding lenses are:
--
-- * 'dtarMarker' @::@ 'Maybe' 'Text'
--
-- * 'dtarTapeArchives' @::@ ['TapeArchive']
--
describeTapeArchivesResponse :: DescribeTapeArchivesResponse
describeTapeArchivesResponse = DescribeTapeArchivesResponse
    { _dtarTapeArchives = mempty
    , _dtarMarker       = Nothing
    }

-- | An opaque string that indicates the position at which the virtual tapes that
-- were fetched for description ended. Use this marker in your next request to
-- fetch the next set of virtual tapes in the virtual tape shelf (VTS). If there
-- are no more virtual tapes to describe, this field does not appear in the
-- response.
dtarMarker :: Lens' DescribeTapeArchivesResponse (Maybe Text)
dtarMarker = lens _dtarMarker (\s a -> s { _dtarMarker = a })

-- | An array of virtual tape objects in the virtual tape shelf (VTS). The
-- description includes of the Amazon Resource Name(ARN) of the virtual tapes.
-- The information returned includes the Amazon Resource Names (ARNs) of the
-- tapes, size of the tapes, status of the tapes, progress of the description
-- and tape barcode.
dtarTapeArchives :: Lens' DescribeTapeArchivesResponse [TapeArchive]
dtarTapeArchives = lens _dtarTapeArchives (\s a -> s { _dtarTapeArchives = a }) . _List

instance ToPath DescribeTapeArchives where
    toPath = const "/"

instance ToQuery DescribeTapeArchives where
    toQuery = const mempty

instance ToHeaders DescribeTapeArchives

instance ToJSON DescribeTapeArchives where
    toJSON DescribeTapeArchives{..} = object
        [ "TapeARNs" .= _dtaTapeARNs
        , "Marker"   .= _dtaMarker
        , "Limit"    .= _dtaLimit
        ]

instance AWSRequest DescribeTapeArchives where
    type Sv DescribeTapeArchives = StorageGateway
    type Rs DescribeTapeArchives = DescribeTapeArchivesResponse

    request  = post "DescribeTapeArchives"
    response = jsonResponse

instance FromJSON DescribeTapeArchivesResponse where
    parseJSON = withObject "DescribeTapeArchivesResponse" $ \o -> DescribeTapeArchivesResponse
        <$> o .:? "Marker"
        <*> o .:? "TapeArchives" .!= mempty

instance AWSPager DescribeTapeArchives where
    page rq rs
        | stop (rs ^. dtarMarker) = Nothing
        | otherwise = (\x -> rq & dtaMarker ?~ x)
            <$> (rs ^. dtarMarker)