#pragma once

// scanner center
//
// created on 2022-12-14
//

#include "../../common/event_monitor.h"
#include "../../common/ipc_util.h"
#include "../img_process/img_process.h"
#include <string.h>

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// scanner ...
#define TRY_GET_WITH_NOMEM(obj, method, buf, size)	\
	if(obj->method == ENOMEM)						\
	{												\
		buf = new char[size + 4];					\
		if(buf)										\
		{											\
			memset(buf, 0, size + 4);				\
			size += 1;								\
			if(obj->method)							\
			{										\
				delete[] buf;						\
				buf = nullptr;						\
			}										\
		}											\
	}

class img_processor;
class image_collector;
class res_mon;
class ipc_wrapper;
class linux_event;
enum scanner_status;

class scanner : public event_handler, public paremeter_get
{
	std::string		ipc_id_;	// path-file:id:size
	img_processor	*img_proc_;
	image_collector	*img_src_;
	res_mon			*res_;
	ipc_wrapper		*ipc_;
	linux_event		*exit_;
	volatile bool	run_;
	scanner_status	status_;
	safe_fifo<std::string>	msg_que_;
	std::string				partial_msg_;

	int32_t init(void);
	int32_t uninit(void);
	
	int32_t get_configuration(const char* name, void* buf, size_t* size);
	int32_t set_configuration(const char* name, void* buf, size_t* size);
	int32_t start_scanning(void);
	int32_t stop_scanning(void);

	int32_t from_thunk_data(std::string& pack);
	int32_t dispatch_ipc_message(LPPACK_BASE pack);
	int32_t ipc_message_handler(void);
	int32_t on_ipc(void* data, size_t data_len, bool in);
	
public:
	scanner(const char* ipc_id);

protected:
	virtual ~scanner();

	// refer
public:
	virtual int32_t add_ref(void) override;
	virtual int32_t release(void) override;

	// event_handler
public:
	virtual int32_t on_event(int32_t ev, void* data, size_t data_len) override;
	virtual int32_t get_fd(void) override;

	// paremeter_get
public:
	virtual parameter* get_parameter(img_proc_param ipp) override;

	// methods
public:
	int32_t run(void);
	int32_t stop(void);
};