{-# 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.SWF.RespondActivityTaskCompleted
-- 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.

-- | Used by workers to tell the service that the 'ActivityTask' identified by the 'taskToken' completed successfully with a 'result' (if provided). The 'result' appears in
-- the 'ActivityTaskCompleted' event in the workflow history.
--
-- If the requested task does not complete successfully, use 'RespondActivityTaskFailed' instead. If the worker finds that the task is canceled through the 'canceled'
-- flag returned by 'RecordActivityTaskHeartbeat', it should cancel the task,
-- clean up and then call 'RespondActivityTaskCanceled'.   A task is considered
-- open from the time that it is scheduled until it is closed. Therefore a task
-- is reported as open while a worker is processing it. A task is closed after
-- it has been specified in a call to RespondActivityTaskCompleted, 'RespondActivityTaskCanceled', 'RespondActivityTaskFailed', or the task has <http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dg-basic.html#swf-dev-timeout-types timed out>.
--
-- Access Control
--
-- You can use IAM policies to control this action's access to Amazon SWF
-- resources as follows:
--
-- Use a 'Resource' element with the domain name to limit the action to only
-- specified domains. Use an 'Action' element to allow or deny permission to call
-- this action. You cannot use an IAM policy to constrain this action's
-- parameters.  If the caller does not have sufficient permissions to invoke the
-- action, or the parameter values fall outside the specified constraints, the
-- action fails by throwing 'OperationNotPermitted'. For details and example IAM
-- policies, see <http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dev-iam.html Using IAM to Manage Access to Amazon SWF Workflows>.
--
-- <http://docs.aws.amazon.com/amazonswf/latest/apireference/API_RespondActivityTaskCompleted.html>
module Network.AWS.SWF.RespondActivityTaskCompleted
    (
    -- * Request
      RespondActivityTaskCompleted
    -- ** Request constructor
    , respondActivityTaskCompleted
    -- ** Request lenses
    , ratcResult
    , ratcTaskToken

    -- * Response
    , RespondActivityTaskCompletedResponse
    -- ** Response constructor
    , respondActivityTaskCompletedResponse
    ) where

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

data RespondActivityTaskCompleted = RespondActivityTaskCompleted
    { _ratcResult    :: Maybe Text
    , _ratcTaskToken :: Text
    } deriving (Eq, Ord, Show)

-- | 'RespondActivityTaskCompleted' constructor.
--
-- The fields accessible through corresponding lenses are:
--
-- * 'ratcResult' @::@ 'Maybe' 'Text'
--
-- * 'ratcTaskToken' @::@ 'Text'
--
respondActivityTaskCompleted :: Text -- ^ 'ratcTaskToken'
                             -> RespondActivityTaskCompleted
respondActivityTaskCompleted p1 = RespondActivityTaskCompleted
    { _ratcTaskToken = p1
    , _ratcResult    = Nothing
    }

-- | The result of the activity task. It is a free form string that is
-- implementation specific.
ratcResult :: Lens' RespondActivityTaskCompleted (Maybe Text)
ratcResult = lens _ratcResult (\s a -> s { _ratcResult = a })

-- | The 'taskToken' of the 'ActivityTask'.
--
-- The 'taskToken' is generated by the service and should be treated as an
-- opaque value. If the task is passed to another process, its 'taskToken' must
-- also be passed. This enables it to provide its progress and respond with
-- results.
ratcTaskToken :: Lens' RespondActivityTaskCompleted Text
ratcTaskToken = lens _ratcTaskToken (\s a -> s { _ratcTaskToken = a })

data RespondActivityTaskCompletedResponse = RespondActivityTaskCompletedResponse
    deriving (Eq, Ord, Show, Generic)

-- | 'RespondActivityTaskCompletedResponse' constructor.
respondActivityTaskCompletedResponse :: RespondActivityTaskCompletedResponse
respondActivityTaskCompletedResponse = RespondActivityTaskCompletedResponse

instance ToPath RespondActivityTaskCompleted where
    toPath = const "/"

instance ToQuery RespondActivityTaskCompleted where
    toQuery = const mempty

instance ToHeaders RespondActivityTaskCompleted

instance ToJSON RespondActivityTaskCompleted where
    toJSON RespondActivityTaskCompleted{..} = object
        [ "taskToken" .= _ratcTaskToken
        , "result"    .= _ratcResult
        ]

instance AWSRequest RespondActivityTaskCompleted where
    type Sv RespondActivityTaskCompleted = SWF
    type Rs RespondActivityTaskCompleted = RespondActivityTaskCompletedResponse

    request  = post "RespondActivityTaskCompleted"
    response = nullResponse RespondActivityTaskCompletedResponse