/*
 * 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 <map>
#include <vector>
#include <string>
#include <fcntl.h>

#include "can/can-bus.hpp"
#include "can/can-signals.hpp"
#include "can/can-message.hpp"
#include "diagnostic/diagnostic-manager.hpp"

#include "low-can-binding.hpp"

///
/// @brief Class representing a configuration attached to the binding.
///
/// It regroups all needed objects instance from other class
///  that will be used along the binding life. It gets a global vision 
///  on which signals are implemented for that binding. 
///  Here, it is only the definition of the class with predefined accessors
///  methods used in the binding.
///
///  It will be the reference point to needed objects.
///
class configuration_t
{
	private:
		can_bus_t can_bus_manager_ = can_bus_t(
			afb_daemon_rootdir_open_locale(
				binder_interface->daemon, "etc/can_buses.json", O_RDONLY, NULL)); ///< instanciate the CAN bus
				///< This will read the configuration file and initialize all CAN devices specified in it.
		diagnostic_manager_t diagnostic_manager_; ///< Diagnostic manager use to manage diagnostic message communication.
		uint8_t active_message_set_ = 0; ///< Which is the active message set ? Default to 0.

		std::vector<can_message_set_t> can_message_set_;
		std::vector<std::vector<can_message_definition_t>> can_message_definition_;
		std::vector<std::vector<can_signal_t>> can_signals_;
		std::vector<std::vector<diagnostic_message_t>> diagnostic_messages_;

		configuration_t(); ///< Private constructor with implementation generated by the AGL generator.

	public:
		static configuration_t& instance();

		can_bus_t& get_can_bus_manager();

		const std::map<std::string, std::shared_ptr<can_bus_dev_t>>& get_can_bus_devices();

		const std::string get_diagnostic_bus() const;

		diagnostic_manager_t& get_diagnostic_manager() ;

		uint8_t get_active_message_set() const;

		const std::vector<can_message_set_t>& get_can_message_set();

		std::vector<can_signal_t>& get_can_signals();

		std::vector<diagnostic_message_t>& get_diagnostic_messages();

		const std::vector<std::string>& get_signals_prefix() const;

		const std::vector<can_message_definition_t>& get_can_message_definition();
		const can_message_definition_t& get_can_message_definition(std::uint8_t message_set_id, std::uint8_t message_id);

		uint32_t get_signal_id(diagnostic_message_t& sig) const;

		uint32_t get_signal_id(can_signal_t& sig) const;

		void set_active_message_set(uint8_t id);

		void find_diagnostic_messages(const openxc_DynamicField &key, std::vector<diagnostic_message_t*>& found_signals);
		diagnostic_message_t* get_diagnostic_message(std::string message_name) const;
		DiagnosticRequest* get_request_from_diagnostic_message(diagnostic_message_t* diag_msg) const;
		DiagnosticRequest* get_request_from_diagnostic_message(std::string message_name) const;

		void find_can_signals(const openxc_DynamicField &key, std::vector<can_signal_t*>& found_signals);

/*
		/// TODO: implement this function as method into can_bus class
		/// @brief Pre initialize actions made before CAN bus initialization
		/// @param[in] bus A CanBus struct defining the bus's metadata
		/// @param[in] writable Configure the controller in a writable mode. If false, it will be configured as "listen only" and will not allow writes or even CAN ACKs.
		/// @param[in] buses An array of all CAN buses.
		void pre_initialize(can_bus_dev_t* bus, bool writable, can_bus_dev_t* buses, const int busCount);
		/// TODO: implement this function as method into can_bus class
		/// @brief Post-initialize actions made after CAN bus initialization
		/// @param[in] bus A CanBus struct defining the bus's metadata
		/// @param[in] writable Configure the controller in a writable mode. If false, it will be configured as "listen only" and will not allow writes or even CAN ACKs.
		/// @param[in] buses An array of all CAN buses.
		void post_initialize(can_bus_dev_t* bus, bool writable, can_bus_dev_t* buses, const int busCount);
		/// TODO: implement this function as method into can_bus class
		/// @brief Check if the device is connected to an active CAN bus, i.e. it's received a message in the recent past.
		/// @return true if a message was received on the CAN bus within CAN_ACTIVE_TIMEOUT_S seconds.
		void logBusStatistics(can_bus_dev_t* buses, const int busCount);
		/// TODO: implement this function as method into can_bus class
		/// @brief Log transfer statistics about all active CAN buses to the debug log.
		/// @param[in] buses An array of active CAN buses.
		bool isBusActive(can_bus_dev_t* bus);
		*/
};