#ifndef _EV_PROTO_H_
#define _EV_PROTO_H_

#include <stddef.h>
#include <stdint.h>
#include <limits.h>

#pragma pack(1)

struct EVPProto
{
	enum EVPP
	{
		EVPP__FIRST,
		EVPP_RAW_BIN = 1,
		EVPP_RAW_TEXT,
		EVPP_PROTOBUF,
		EVPP_HTTP,
		EVPP__LAST
	};
};

struct EVPCommand
{
	enum EVPC
	{
		EVPC__FIRST,
		EVPC_STATUS = 1,
		EVPC_USER_DEFINE = 128,
		EVPC__LAST = USHRT_MAX
	};
};

struct EVPStatus
{
	enum EVPS
	{
		EVPS__FIRST,
		EVPS_OK = 1,
		EVPS_ERROR = 128,
		EVPS_INTERNAL_ERROR,
		EVPS_PROTO_ERROR,
		EVPS_COMMAND_ERROR,
		EVPS_PARAMETER_ERROR,
		EVPS__LAST
	};
};

struct EVPHeader
{
private:
	uint8_t _padding1;

public:
	uint8_t proto;  // EVPProto::EVPP
	int16_t cmd;	// EVPCommand::EVPC
	uint32_t size;	// sizeof(EVPHeader)+sizeof(subcmd)
	
	void hton();
	void ntoh();
	
	EVPHeader() : _padding1(0), proto(EVPProto::EVPP__FIRST), cmd(EVPCommand::EVPC__FIRST), size(8)
	{}
};

struct EVP_Status
{
	int16_t status;
	
	void hton();
	void ntoh();
};

struct EVP_VariableBuffer
{
	int16_t type;
	uint8_t buff[0];
	
	void hton();
	void ntoh();
};

//#todo
template<typename TPacket>
void endian_convert(TPacket& packet);

#pragma pack()

#endif