//
//  parser.h
//  mcc@exe
//
//  Created by Finn Behrens on 19.02.21.
//

#ifndef parser_h
#define parser_h

#include <stdio.h>
#include <event2/buffer.h>
#include <stdbool.h>
#include <unistd.h>


#include "protocol.h"
#include "package.h"

/**
 * A struct for client specific data.
 *
 * @field fd of the client
 *
 * @field bufferevent ev-buffer to write data to
 *
 * @field compression_threshold when to start compressing packages
 *
 * @field state protocoll state of the client
 *
 * @field user the user associated to the client
 *
 * TODO: add crypto and compression parsing
 */
typedef struct {
    /* The clients socket. */
    int fd;

    /* The bufferedevent for this client. */
    struct bufferevent *buf_ev;
    
    /* negative means no compression */
    int compression_threshold;
    
    enum mc_state state;
    
    mc_play_user_t *user;
    
    // TODO: encrpytion
} client_t;
int parse_packet(client_t *client, uint8_t *buffer);

static inline void mc_close_user(client_t *client) {
    bufferevent_free(client->buf_ev);
    close(client->fd);
    if (client->user != NULL)
        free(client->user);
    
    free(client);
}

struct mc_package_op {
    int (*doit) (client_t *client, mc_package_header_t *header);
    int cmd;
    enum mc_direction direction;
    enum mc_state state;
};

#endif /* parser_h */