{-# 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.SDB.ListDomains
-- 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)

-- | The ListDomains operation lists all domains associated with the Access Key
-- ID. It returns domain names up to the limit set by MaxNumberOfDomains. A
-- NextToken is returned if there are more than MaxNumberOfDomains domains.
-- Calling ListDomains successive times with the NextToken provided by the
-- operation returns up to MaxNumberOfDomains more domain names with each
-- successive operation call.
--
-- <http://docs.aws.amazon.com/AmazonSimpleDB/latest/DeveloperGuide/SDB_API_ListDomains.html>
module Network.AWS.SDB.ListDomains
    (
    -- * Request
      ListDomains
    -- ** Request constructor
    , listDomains
    -- ** Request lenses
    , ldMaxNumberOfDomains
    , ldNextToken

    -- * Response
    , ListDomainsResponse
    -- ** Response constructor
    , listDomainsResponse
    -- ** Response lenses
    , ldrDomainNames
    , ldrNextToken
    ) where

import Network.AWS.Prelude
import Network.AWS.Request.Query
import Network.AWS.SDB.Types
import qualified GHC.Exts

data ListDomains = ListDomains
    { _ldMaxNumberOfDomains :: Maybe Int
    , _ldNextToken          :: Maybe Text
    } deriving (Eq, Ord, Show)

-- | 'ListDomains' constructor.
--
-- The fields accessible through corresponding lenses are:
--
-- * 'ldMaxNumberOfDomains' @::@ 'Maybe' 'Int'
--
-- * 'ldNextToken' @::@ 'Maybe' 'Text'
--
listDomains :: ListDomains
listDomains = ListDomains
    { _ldMaxNumberOfDomains = Nothing
    , _ldNextToken          = Nothing
    }

-- | The maximum number of domain names you want returned. The range is 1 to
-- 100. The default setting is 100.
ldMaxNumberOfDomains :: Lens' ListDomains (Maybe Int)
ldMaxNumberOfDomains =
    lens _ldMaxNumberOfDomains (\s a -> s { _ldMaxNumberOfDomains = a })

-- | A string informing Amazon SimpleDB where to start the next list of domain
-- names.
ldNextToken :: Lens' ListDomains (Maybe Text)
ldNextToken = lens _ldNextToken (\s a -> s { _ldNextToken = a })

data ListDomainsResponse = ListDomainsResponse
    { _ldrDomainNames :: List "DomainName" Text
    , _ldrNextToken   :: Maybe Text
    } deriving (Eq, Ord, Show)

-- | 'ListDomainsResponse' constructor.
--
-- The fields accessible through corresponding lenses are:
--
-- * 'ldrDomainNames' @::@ ['Text']
--
-- * 'ldrNextToken' @::@ 'Maybe' 'Text'
--
listDomainsResponse :: ListDomainsResponse
listDomainsResponse = ListDomainsResponse
    { _ldrDomainNames = mempty
    , _ldrNextToken   = Nothing
    }

-- | A list of domain names that match the expression.
ldrDomainNames :: Lens' ListDomainsResponse [Text]
ldrDomainNames = lens _ldrDomainNames (\s a -> s { _ldrDomainNames = a }) . _List

-- | An opaque token indicating that there are more domains than the specified
-- MaxNumberOfDomains still available.
ldrNextToken :: Lens' ListDomainsResponse (Maybe Text)
ldrNextToken = lens _ldrNextToken (\s a -> s { _ldrNextToken = a })

instance ToPath ListDomains where
    toPath = const "/"

instance ToQuery ListDomains where
    toQuery ListDomains{..} = mconcat
        [ "MaxNumberOfDomains" =? _ldMaxNumberOfDomains
        , "NextToken"          =? _ldNextToken
        ]

instance ToHeaders ListDomains

instance AWSRequest ListDomains where
    type Sv ListDomains = SDB
    type Rs ListDomains = ListDomainsResponse

    request  = post "ListDomains"
    response = xmlResponse

instance FromXML ListDomainsResponse where
    parseXML = withElement "ListDomainsResult" $ \x -> ListDomainsResponse
        <$> parseXML x
        <*> x .@? "NextToken"

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