#ifndef SERVER_CODE_ETUDIANT_H
#define SERVER_CODE_ETUDIANT_H

#include <arpa/inet.h>
#include <stdio.h>

#define MAX_CLIENTS 100
#define NAME_MAX_LENGTH 32
/* Client structure */
typedef struct {
  struct sockaddr_in addr;	/* Client remote address */
  FILE *client_conn;		/* Connection file handle */
  int uid;			/* Client unique identifier */
  char name[NAME_MAX_LENGTH];		/* Client name */
  pid_t pid;			/* PID of the client */
  int fd;			/* Client file descriptor */
} client_t;

/* number of connected clients */
extern int cli_count;

#define HT_SIZE 16

struct bucket {
  char key[NAME_MAX_LENGTH];
  client_t value;
  struct bucket* next;
};

struct hash_table {
  struct bucket *buckets[HT_SIZE];
  int nb_entries;
};

/* Calcule le hash d'une cle. La valeur retournee est un entier entre 0 et 15.
 */
int ht_hash(char key[NAME_MAX_LENGTH]);
/* Retourne un double representant la date actuelle.
 */
void ht_get_clock(double *date);
/* Alloue et initialise un struct bucket */
struct bucket* ht_alloc(char key[NAME_MAX_LENGTH], client_t* value);
/* Retourne le struct bucket dont la cle vaut key.
   Retroune NULL si la cle n'est pas trouvee.
*/
struct bucket* ht_search(char key[NAME_MAX_LENGTH]);

/* Insere un couple <key, value> dans la hashtable.
 * Si la cle key existe deja, sa valeur est mise a jour.
 */
void ht_insert(char key[NAME_MAX_LENGTH], client_t* value);
/* Supprime le struct bucket dont la cle vaut key */
void ht_remove(char key[NAME_MAX_LENGTH]);

/* Enregistre la liste des utilisateurs dans le fichier filename */
void ht_dump(char* filename);
/* Envoie a client la liste des utilisateurs contenue dans le fichier filename */
void ht_load(client_t* client, char* filename);


/* initialize stuff */
void server_init();
/* finalize stuff */
void server_finalize(int signo);

/* return the connected client whose fd is fd */
client_t *get_client_from_fd(int fd);
/* add a client to the list of connected clients */
void queue_add(client_t *cl);
/* remove a client from the list of connected clients */
void queue_delete(client_t *cl);

/* Send a message to a client */
void send_message(char *s, client_t *client);
/* send a message to all clients */
void send_message_all(char *s);

/* Send message to sender */
//void send_message_self(const char *s, FILE* client_conn);
/* Send message to client */
void send_message_client(char *s, int uid);
/* Send list of active clients */
void send_active_clients(client_t*client);

/* initiate a connexion */
void say_hello(client_t *cli);
/* process an incoming message from a client */
void handle_incoming_cmd(client_t *cli);

#endif	/* SERVER_CODE_ETUDIANT_H */