#pragma once
#include "tlibc/errors.h"
#include "network/tcp-chat-protocol/constant.h"

#define PROTOCOL_VERSION 1 /* 1.0.0 */

typedef enum PacketType {
    PacketType_Invalid,
    PacketType_ErrorMessage,
    PacketType_ClientHandshake,
    PacketType_ServerHandshake,
} __attribute__((__packed__)) PacketType;

typedef struct ErrorMessage {
    PacketHeader header;
    /* content stream of size `header.content_size` */
} ErrorMessage;

typedef struct ClientHandshake {
    PacketHeader header;
    u8 session_key[AES_SESSION_KEY_SIZE];
} ClientHandshake;

Result(void) ClientHandshake_tryConstruct(ClientHandshake* ptr, Array(u8) session_key);


typedef struct ServerHandshake {
    PacketHeader header;
    u64 session_id;
} ServerHandshake;