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/*
 * Copyright (c) 2018 Samsung Electronics Co., Ltd
 *
 * Licensed under the Flora License, Version 1.1 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://floralicense.org/license/
 *
 * 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 "battery-data.h"
#include <device/battery.h>
#include "app-log.h"

battery_changed_cb battery_cb;

/*
 * @brief provide the battery level
 * return battery level
 */
int battery_get_status()
{
	int battery_level = 0;
	int ret = device_battery_get_percent(&battery_level);
	if (ret != DEVICE_ERROR_NONE) {
		__E("device_battery_get_percentage error : %d", ret);
	}
	__D("%s", __func__);
	return battery_level;
}

/*
 * @brief Called when a device status is changed.
 * @param Enumeration for the device state callback.
 * @param value of the changed value
 * @param user data
 */
static void _battery_state_changed_cb(device_callback_e type, void *value, void *user_data)
{
	int battery_level = 0;
	if (DEVICE_CALLBACK_BATTERY_CAPACITY == type) {
		battery_level = (int)value;
	}
	if (battery_cb) {
		__D("battery_cb called");
		battery_cb(battery_level, user_data);
	}
}

/*
 * @brief Adds a callback to the observing device state.
 * @param callback The callback function to add
 * @param user data
 */
void battery_add_status_changed_cb(battery_changed_cb callback,
					void *user_data){
	battery_cb = callback;
	__D("%s", __func__);
	device_add_callback(DEVICE_CALLBACK_BATTERY_CAPACITY,
					_battery_state_changed_cb, user_data);
}

/*
 * @brief removes the callback registered
 * @param function pointer to callback function
 */
void battery_remove_status_changed_cb(battery_changed_cb callback)
{
	battery_cb = NULL;
	device_remove_callback(DEVICE_CALLBACK_BATTERY_CAPACITY, _battery_state_changed_cb);
}