/*
 * Copyright (c) 2018 Samsung Electronics Co., Ltd 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.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License 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.
 */

#include <Ecore.h>
#include <tizen.h>
#include <service_app.h>

#include "log.h"
#include "resource.h"
#include "sensor-data.h"

#define SENSORING_TIME_INTERVAL (0.5)

// For using SmartThings SDK
#define USE_ST_SDK

#ifdef USE_ST_SDK
#include "st-master.h"
#include "st-resource.h"
#endif /* USE_ST_SDK */

typedef struct app_data_s {
	Ecore_Timer *getter_timer;
	sensor_data *lidar_data;
} app_data;

static Eina_Bool _lidar_value_read_cb(void *user_data)
{
	app_data *ad = user_data;

	int ret = 0;
	unsigned int lidar_value = 0;

	if (!ad) {
		_E("app_data is NULL");
		service_app_exit();
	}

	resource_write_led(5, 1);
	ret = resource_read_lidar_v3(&lidar_value);
	retv_if(ret != 0, ECORE_CALLBACK_RENEW);
	resource_write_led(5, 0);

	_D("distance : %u cm", lidar_value);
	sensor_data_set_uint(ad->lidar_data, lidar_value);

	return ECORE_CALLBACK_RENEW;
}

static void service_app_control(app_control_h app_control, void *user_data)
{
	app_data *ad = user_data;

	if (ad->getter_timer)
		ecore_timer_del(ad->getter_timer);

	ad->getter_timer = ecore_timer_add(SENSORING_TIME_INTERVAL, _lidar_value_read_cb, ad);
	if (!ad->getter_timer) {
		_E("Failed to add getter timer");
		return;
	}
}

static bool service_app_create(void *user_data)
{
	app_data *ad = user_data;

	ad->lidar_data = sensor_data_new(SENSOR_DATA_TYPE_UINT);
	retv_if(!ad->lidar_data, false);

#ifdef USE_ST_SDK
	if (st_master_create())
		return false;

	if (st_resource_create(ad->lidar_data)) {
		st_master_destroy();
		return false;
	}
#endif

	return true;
}

static void service_app_terminate(void *user_data)
{
	app_data *ad = user_data;

#ifdef USE_ST_SDK
	st_resource_destroy();
	st_master_destroy();
#endif

	sensor_data_free(ad->lidar_data);
	ad->lidar_data = NULL;

	if (ad->getter_timer) {
		ecore_timer_del(ad->getter_timer);
		ad->getter_timer = NULL;
	}

	resource_close_all();
}

int main(int argc, char* argv[])
{
	app_data ad;
	int ret = 0;
	service_app_lifecycle_callback_s event_callback;

	ad.getter_timer = NULL;
	ad.lidar_data = NULL;

	event_callback.create = service_app_create;
	event_callback.terminate = service_app_terminate;
	event_callback.app_control = service_app_control;

	ret = service_app_main(argc, argv, &event_callback, &ad);

	return ret;
}