{-# 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.Lambda.ListVersionsByFunction
-- 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)
--
-- List all versions of a function. For information about the versioning
-- feature, see
-- <http://docs.aws.amazon.com/lambda/latest/dg/versioning-aliases.html AWS Lambda Function Versioning and Aliases>.
module Network.AWS.Lambda.ListVersionsByFunction
    (
    -- * Creating a Request
      listVersionsByFunction
    , ListVersionsByFunction
    -- * Request Lenses
    , lvbfMarker
    , lvbfMaxItems
    , lvbfFunctionName

    -- * Destructuring the Response
    , listVersionsByFunctionResponse
    , ListVersionsByFunctionResponse
    -- * Response Lenses
    , lvbfrsVersions
    , lvbfrsNextMarker
    , lvbfrsResponseStatus
    ) where

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

-- | /See:/ 'listVersionsByFunction' smart constructor.
data ListVersionsByFunction = ListVersionsByFunction'
    { _lvbfMarker       :: !(Maybe Text)
    , _lvbfMaxItems     :: !(Maybe Nat)
    , _lvbfFunctionName :: !Text
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'ListVersionsByFunction' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'lvbfMarker'
--
-- * 'lvbfMaxItems'
--
-- * 'lvbfFunctionName'
listVersionsByFunction
    :: Text -- ^ 'lvbfFunctionName'
    -> ListVersionsByFunction
listVersionsByFunction pFunctionName_ =
    ListVersionsByFunction'
    { _lvbfMarker = Nothing
    , _lvbfMaxItems = Nothing
    , _lvbfFunctionName = pFunctionName_
    }

-- | Optional string. An opaque pagination token returned from a previous
-- 'ListVersionsByFunction' operation. If present, indicates where to
-- continue the listing.
lvbfMarker :: Lens' ListVersionsByFunction (Maybe Text)
lvbfMarker = lens _lvbfMarker (\ s a -> s{_lvbfMarker = a});

-- | Optional integer. Specifies the maximum number of AWS Lambda function
-- versions to return in response. This parameter value must be greater
-- than 0.
lvbfMaxItems :: Lens' ListVersionsByFunction (Maybe Natural)
lvbfMaxItems = lens _lvbfMaxItems (\ s a -> s{_lvbfMaxItems = a}) . mapping _Nat;

-- | Function name whose versions to list. You can specify a function name
-- (for example, 'Thumbnail') or you can specify Amazon Resource Name (ARN)
-- of the function (for example,
-- 'arn:aws:lambda:us-west-2:account-id:function:ThumbNail'). AWS Lambda
-- also allows you to specify a partial ARN (for example,
-- 'account-id:Thumbnail'). Note that the length constraint applies only to
-- the ARN. If you specify only the function name, it is limited to 64
-- character in length.
lvbfFunctionName :: Lens' ListVersionsByFunction Text
lvbfFunctionName = lens _lvbfFunctionName (\ s a -> s{_lvbfFunctionName = a});

instance AWSRequest ListVersionsByFunction where
        type Rs ListVersionsByFunction =
             ListVersionsByFunctionResponse
        request = get lambda
        response
          = receiveJSON
              (\ s h x ->
                 ListVersionsByFunctionResponse' <$>
                   (x .?> "Versions" .!@ mempty) <*>
                     (x .?> "NextMarker")
                     <*> (pure (fromEnum s)))

instance Hashable ListVersionsByFunction

instance NFData ListVersionsByFunction

instance ToHeaders ListVersionsByFunction where
        toHeaders = const mempty

instance ToPath ListVersionsByFunction where
        toPath ListVersionsByFunction'{..}
          = mconcat
              ["/2015-03-31/functions/", toBS _lvbfFunctionName,
               "/versions"]

instance ToQuery ListVersionsByFunction where
        toQuery ListVersionsByFunction'{..}
          = mconcat
              ["Marker" =: _lvbfMarker,
               "MaxItems" =: _lvbfMaxItems]

-- | /See:/ 'listVersionsByFunctionResponse' smart constructor.
data ListVersionsByFunctionResponse = ListVersionsByFunctionResponse'
    { _lvbfrsVersions       :: !(Maybe [FunctionConfiguration])
    , _lvbfrsNextMarker     :: !(Maybe Text)
    , _lvbfrsResponseStatus :: !Int
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'ListVersionsByFunctionResponse' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'lvbfrsVersions'
--
-- * 'lvbfrsNextMarker'
--
-- * 'lvbfrsResponseStatus'
listVersionsByFunctionResponse
    :: Int -- ^ 'lvbfrsResponseStatus'
    -> ListVersionsByFunctionResponse
listVersionsByFunctionResponse pResponseStatus_ =
    ListVersionsByFunctionResponse'
    { _lvbfrsVersions = Nothing
    , _lvbfrsNextMarker = Nothing
    , _lvbfrsResponseStatus = pResponseStatus_
    }

-- | A list of Lambda function versions.
lvbfrsVersions :: Lens' ListVersionsByFunctionResponse [FunctionConfiguration]
lvbfrsVersions = lens _lvbfrsVersions (\ s a -> s{_lvbfrsVersions = a}) . _Default . _Coerce;

-- | A string, present if there are more function versions.
lvbfrsNextMarker :: Lens' ListVersionsByFunctionResponse (Maybe Text)
lvbfrsNextMarker = lens _lvbfrsNextMarker (\ s a -> s{_lvbfrsNextMarker = a});

-- | The response status code.
lvbfrsResponseStatus :: Lens' ListVersionsByFunctionResponse Int
lvbfrsResponseStatus = lens _lvbfrsResponseStatus (\ s a -> s{_lvbfrsResponseStatus = a});

instance NFData ListVersionsByFunctionResponse