#pragma once

#include "IStream.h"

#include <fsdk/IObject.h>
#include <fsdk/FaceEngine.h>
#include <fsdk/FSDKVersion.h>

#if !defined(FSDK_VERSION_MAJOR)
#error "FsdkVersion.h header is needed, but not included here"
#endif

#if FSDK_VERSION_MAJOR >= 5
#include <fsdk/LaunchOptions.h>
#endif

namespace vsdk {
	struct IVehicleEngine;
}

namespace tsdk {

	struct ITrackEngine : fsdk::IRefCounted {

		/**
		 * @brief Stops processing with all queued callbacks waiting.
		 * @note It is a blocking function, which will wait all stored callbacks
		 * execution.
		 */
		TRACK_ENGINE_API virtual void stop() = 0;

		/**
		 * @brief Create the Stream object.
		 * @return Pointer to created object or nullptr if failed.
		 * */
		TRACK_ENGINE_API virtual tsdk::IStream* createStream(StreamParams *params = nullptr) = 0;

		/** @brief Sets a best shot observer for all streams
		*	@param observer pointer to the observer object, @see IBatchBestShotObserver
		*/
		TRACK_ENGINE_API virtual void setBatchBestShotObserver(
			tsdk::IBatchBestShotObserver *observer) = 0;

		/** @brief Sets a visual observer for all streams
		*	@param observer pointer to the observer object, @see IBatchVisualObserver
		*/
		TRACK_ENGINE_API virtual void setBatchVisualObserver(
			tsdk::IBatchVisualObserver *observer) = 0;

		/** @brief Sets a debug observer for all streams
		*	@param observer pointer to the observer object, @see IBatchDebugObserver
		*/
		TRACK_ENGINE_API virtual void setBatchDebugObserver(
			tsdk::IBatchDebugObserver *observer) = 0;
	};

	/**
	 * @brief Create the TrackerEngine object by config path.
	 * @param [in] engine pointer to the FaceEngine object;
	 * @param [in] configPath configuration file path;
	 * @param [in] vehicleEngine pointer to the VehicleEngine object;
	 * @param [in] launchOptions launch options for sdk functions;
	 * @return fsdk ResultValue object, where value is track engine object reference.
	 * */
	TRACK_ENGINE_API fsdk::ResultValue<fsdk::FSDKError, fsdk::Ref<tsdk::ITrackEngine>> createTrackEngine(
		fsdk::FaceEngineType* engine,
		const char* configPath = nullptr,
		vsdk::IVehicleEngine* vehicleEngine = nullptr
#if FSDK_VERSION_MAJOR >= 5
		, const fsdk::LaunchOptions *launchOptions = nullptr
#endif
	);

	/**
	 * @brief Create the TrackerEngine object by settings provider.
	 * @param [in] engine pointer to the FaceEngine object;
	 * @param [in] settings provider with configuration;
	 * @param [in] vehicleEngine pointer to the VehicleEngine object;
	 * @param [in] launchOptions launch options for sdk functions;
	 * @return fsdk ResultValue object, where value is track engine object reference.
	 * */
	TRACK_ENGINE_API fsdk::ResultValue<fsdk::FSDKError, fsdk::Ref<tsdk::ITrackEngine>> createTrackEngine(
		fsdk::FaceEngineType* engine,
		const fsdk::ISettingsProviderPtr& provider,
		vsdk::IVehicleEngine* vehicleEngine = nullptr
#if FSDK_VERSION_MAJOR >= 5
		, const fsdk::LaunchOptions *launchOptions = nullptr
#endif
	);
}