/*
 * Copyright 2010-2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */

/**
 * @file aws_iot_shadow_actions.c
 * @brief Shadow client Action API definitions
 */

#ifdef __cplusplus
extern "C" {
#endif

#include "aws_iot_shadow_actions.h"

#include "aws_iot_log.h"
#include "aws_iot_shadow_json.h"
#include "aws_iot_shadow_records.h"
#include "aws_iot_config.h"

IoT_Error_t aws_iot_shadow_internal_action(const char *pThingName, ShadowActions_t action,
										   const char *pJsonDocumentToBeSent, size_t jsonSize, fpActionCallback_t callback,
										   void *pCallbackContext, uint32_t timeout_seconds, bool isSticky) {
	IoT_Error_t ret_val = SUCCESS;
	bool isClientTokenPresent = false;
	bool isAckWaitListFree = false;
	uint8_t indexAckWaitList;
	char extractedClientToken[MAX_SIZE_CLIENT_ID_WITH_SEQUENCE];

	FUNC_ENTRY;

	if(NULL == pThingName || NULL == pJsonDocumentToBeSent) {
		FUNC_EXIT_RC(NULL_VALUE_ERROR);
	}

	isClientTokenPresent = extractClientToken(pJsonDocumentToBeSent, jsonSize, extractedClientToken, MAX_SIZE_CLIENT_ID_WITH_SEQUENCE );

	if(isClientTokenPresent && (NULL != callback)) {
		if(getNextFreeIndexOfAckWaitList(&indexAckWaitList)) {
			isAckWaitListFree = true;
		}

		if(isAckWaitListFree) {
			if(!isSubscriptionPresent(pThingName, action)) {
				ret_val = subscribeToShadowActionAcks(pThingName, action, isSticky);
			} else {
				incrementSubscriptionCnt(pThingName, action, isSticky);
			}
		}
		else {
			ret_val = FAILURE;
		}
	}

	if(SUCCESS == ret_val) {
		ret_val = publishToShadowAction(pThingName, action, pJsonDocumentToBeSent);
	}

	if(isClientTokenPresent && (NULL != callback) && (SUCCESS == ret_val) && isAckWaitListFree) {
		addToAckWaitList(indexAckWaitList, pThingName, action, extractedClientToken, callback, pCallbackContext,
						 timeout_seconds);
	}

	FUNC_EXIT_RC(ret_val);
}

#ifdef __cplusplus
}
#endif