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/*
 * Copyright (C) 2015, 2016 "IoT.bzh"
 * Author "Romain Forlot" <romain.forlot@iot.bzh>
 *
 * 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.
 */

#pragma once

#include <vector>

#include "uds/uds.h"
#include "../can/can-bus.hpp"
#include "../can/can-message.hpp"

#include "../low-can-binding.hpp"

enum UNIT {
	POURCENT,
	DEGREES_CELSIUS,
	KPA,
	RPM,
	GRAMS_SEC,
	SECONDS,
	KM,
	KM_H,
	PA,
	NM,
	INVALID
};

/**
 * @brief - A representation of an OBD-II PID.
 */
class obd2_signal_t {
	private:
		uint8_t pid_; /*!< pid - The 1 byte PID.*/
		std::string generic_name_; /*!< generic_name_ - A human readable name to use for this PID when published.*/
		int min_; /*!< min_ - Minimum value that can take this pid */
		int max_; /*!< max_ - Maximum value that can take this pid */
		enum UNIT unit_; /*!< unit_ : Which unit system is used by that pid. See enum UNIT above.*/
		int frequency_; /*!< frequency - The frequency to request this PID if supported by the vehicle when automatic, recurring OBD-II requests are enabled.*/
		bool supported_; /*!< supported_ - boolean indicating whether this pid is supported by the vehicle or not.*/

	public:
		const char* generic_name = generic_name_.c_str();
		obd2_signal_t(uint8_t pid, const char* generic_name, const int min_, const int max_, enum UNIT unit, int frequency, bool supported);

		uint32_t get_pid();
		const std::string& get_generic_name() const;
		const std::string get_name() const;
		int get_frequency() const;

		const DiagnosticRequest build_diagnostic_request();

		bool is_obd2_response(const can_message_t& can_message);
		bool is_obd2_request(const DiagnosticRequest *request);

		static float decode_obd2_response(const DiagnosticResponse* response, float parsedPayload);
};