bomberstudent/Serveur/handler.c

/* 
 * File:   handler.c
 * Author: Arthur Brandao
 *
 * Created on 23 novembre 2018
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "error.h"
#include "bomberstudent_server.h"
#include "client.h"
#include "player.h"
#include "handler.h"

/* --- Extern --- */
extern Game game[MAXGAME];
extern int nbGame;
pthread_mutex_t gameMutex[MAXGAME];
pthread_mutex_t playerMutex[MAXGAME * MAXPLAYER];

/* --- Fonctions privées --- */

/**
 * Cherche dans quel partie est un client
 * @param int L'id du client
 * @return int L'index de la partie
 */
int search_client_game(int cliId) {
    int index = ERR;
    for (int i = 0; i < MAXGAME; i++) {
        pthread_mutex_lock(&gameMutex[i]);
        //Regarde si la game est active et avec des joueurs
        if (game[i].active && game[i].nbPlayer > 0) {
            //Parcours les joueurs
            for (int j = 0; j < MAXPLAYER; j++) {
                pthread_mutex_lock(&playerMutex[(i * MAXPLAYER) + j]);
                //Si le joueur est actif
                if (game[i].player[j]->ini) {
                    //Si l'id est le bon
                    if (game[i].player[j]->id == cliId) {
                        index = i;
                        pthread_mutex_unlock(&playerMutex[(i * MAXPLAYER) + j]);
                        break;
                    }
                }
                pthread_mutex_unlock(&playerMutex[(i * MAXPLAYER) + j]);
            }
        }
        pthread_mutex_unlock(&gameMutex[i]);
        //Si on a un resultat
        if (index != ERR) {
            break;
        }
    }
    //Retour
    return index;
}

/**
 * Cherche une partie par son nom
 * @param char* Le nom de la partie
 * @return int L'index dans le tableau
 */
int search_game(char* name) {
    int index = ERR;
    for (int i = 0; i < MAXGAME; i++) {
        pthread_mutex_lock(&gameMutex[i]);
        //Regarde si la game est active et le nom
        if (game[i].active && strncmp(game[i].name, name, strlen(game[i].name)) == 0) {
            index = i;
            pthread_mutex_unlock(&gameMutex[i]);
            break;
        }
        pthread_mutex_unlock(&gameMutex[i]);
    }
    return index;
}

/* --- Fonctions publiques --- */
void ini_handler() {
    //Get
    add_handler("GET", "game/list", handler_game_list);
    //Post
    add_handler("POST", "client/end", handler_client_end);
    add_handler("POST", "game/create", handler_game_create);
    add_handler("POST", "game/join", handler_game_join);
    add_handler("POST", "game/quit", handler_game_quit);
    add_handler("POST", "player/move", handler_player_move);
}

int handler_client_end(int cliId, JsonParser* json) {
    //Verif que le client est toujours actif
    if (get_client(cliId) != NULL) {
        printf("Deconnexion du client %d\n", cliId);
        handler_game_quit(cliId, json);
        remove_client(cliId);
    }
    return SUCCESS;
}

int handler_game_list(int cliId, JsonParser* json) {
    JsonEncoder reponse;
    JsonArray game;
    JsonArray map;
    int nb;
    //Recup la liste des parties et des cartes
    ini_array_encoder(&game);
    ini_array_encoder(&map);
    nb = list_game(&game);
    list_map(&map);
    //Creation reponse
    ini_encoder(&reponse);
    add_string(&reponse, "action", "game/list");
    add_integer(&reponse, "status", 200);
    add_string(&reponse, "message", "ok");
    if (nb == 0) {
        add_integer(&reponse, "numberGameList", 0);
    } else {
        add_integer(&reponse, "numberGameList", nb);
        add_array(&reponse, "games", &game);
    }
    add_array(&reponse, "maps", &map);
    //Envoi reponse au client
    if (!send_client(cliId, &reponse)) {
        adderror("Impossible de répondre au client");
        return FAIL;
    }
    //Nettoyage
    clean_json_encoder(&reponse);
    clean_json_array(&map);
    clean_json_array(&game);
    return SUCCESS;
}

int handler_game_create(int cliId, JsonParser* json) {
    char* map, * name, * msg;
    int index, joueur;
    JsonEncoder reponse;
    //Verification arguments
    if (get_pos(json, "name") == JSON_ERROR) {
        send_err_client(cliId, EREQUEST);
        adderror("Le json du client est incorrect");
        return FAIL;
    }
    if (get_pos(json, "map") == JSON_ERROR) {
        send_err_client(cliId, EREQUEST);
        adderror("Le json du client est incorrect");
        return FAIL;
    }
    //Recup valeur
    map = get_string(json, "map");
    name = get_string(json, "name");
    //Initialisation reponse JSON
    ini_encoder(&reponse);
    add_string(&reponse, "action", "game/create");
    //Verif nom non existant
    if (search_game(name) != ERR) {
        add_integer(&reponse, "status", 501);
        add_string(&reponse, "message", "Cannot create game");
        if (!send_client(cliId, &reponse)) {
            adderror("Impossible de répondre au client");
        }
        clean_json_encoder(&reponse);
        return FAIL;
    }
    //Creation
    index = create_game(name, map);
    if (index == ERR) {
        add_integer(&reponse, "status", 501);
        add_string(&reponse, "message", "Cannot create game");
        if (!send_client(cliId, &reponse)) {
            adderror("Impossible de répondre au client");
        }
        clean_json_encoder(&reponse);
        return FAIL;
    }
    //Ajout du joueur dans la partie
    joueur = add_player(&game[index], cliId);
    if (joueur == ERR) {
        stop_game(&game[index]);
        add_integer(&reponse, "status", 501);
        add_string(&reponse, "message", "Cannot create game");
        if (!send_client(cliId, &reponse)) {
            adderror("Impossible de répondre au client");
        }
        clean_json_encoder(&reponse);
        return FAIL;
    }
    //Recup info
    describe_game(&game[index], joueur, &reponse);
    //Ajout infos
    msg = new_string(25 + strlen(map));
    sprintf(msg, "Game created with %s", map);
    add_integer(&reponse, "status", 201);
    add_string(&reponse, "message", msg);
    add_string(&reponse, "startPos", "1,1");
    free(msg);
    //Envoi
    if (!send_client(cliId, &reponse)) {
        adderror("Impossible de répondre au client");
        clean_json_encoder(&reponse);
        return FAIL;
    }
    //Nettoyage
    clean_json_encoder(&reponse);
    free(map);
    free(name);
    return SUCCESS;
}

int handler_game_join(int cliId, JsonParser* json) {
    char* name;
    int index, joueur;
    JsonEncoder reponse;
    //Verification arguments
    if (get_pos(json, "name") == JSON_ERROR) {
        send_err_client(cliId, EREQUEST);
        adderror("Le json du client est incorrect");
        return FAIL;
    }
    //Recup valeur
    name = get_string(json, "name");
    //Initialisation json reponse
    ini_encoder(&reponse);
    add_string(&reponse, "action", "game/join");
    //Verif game existe
    index = search_game(name);
    if (index == ERR) {
        add_integer(&reponse, "status", 501);
        add_string(&reponse, "message", "Cannot join the game");
        if (!send_client(cliId, &reponse)) {
            adderror("Impossible de répondre au client");
        }
        clean_json_encoder(&reponse);
        free(name);
        return FAIL;
    }
    //Ajout du joueur dans la partie
    joueur = add_player(&game[index], cliId);
    if (joueur == ERR) {
        add_integer(&reponse, "status", 501);
        add_string(&reponse, "message", "Cannot join the game");
        if (!send_client(cliId, &reponse)) {
            adderror("Impossible de répondre au client");
        }
        clean_json_encoder(&reponse);
        free(name);
        return FAIL;
    }
    //Recup info
    describe_game(&game[index], joueur, &reponse);
    //Ajout infos
    add_integer(&reponse, "status", 201);
    add_string(&reponse, "startPos", "1,1");
    //Envoi
    if (!send_client(cliId, &reponse)) {
        adderror("Impossible de répondre au client");
        clean_json_encoder(&reponse);
        free(name);
        return FAIL;
    }
    //Nettoyage
    clean_json_encoder(&reponse);
    free(name);
    //Avertit les autres joueurs
    add_integer(&reponse, "id", cliId);
    add_string(&reponse, "pos", "0,0");
    notify_player(&game[index], "POST", "game/newplayer", &reponse, cliId);
    //Nettoyage
    clean_json_encoder(&reponse);
    return SUCCESS;
}

int handler_game_quit(int cliId, JsonParser* json) {
    boolean find = false;
    JsonEncoder notif;
    //Cherche le client dans les parties
    for (int i = 0; i < MAXGAME; i++) {
        pthread_mutex_lock(&gameMutex[i]);
        if (game[i].active) {
            for (int j = 0; j < MAXPLAYER; j++) {
                pthread_mutex_lock(&playerMutex[(i * MAXPLAYER) + j]);
                if (game[i].player[j]->ini && game[i].player[j]->id == cliId) {
                    pthread_mutex_unlock(&playerMutex[(i * MAXPLAYER) + j]);
                    pthread_mutex_unlock(&gameMutex[i]);
                    find = true;
                    remove_player(&game[i], j);
                    //Avertit les autres joueurs
                    ini_encoder(&notif);
                    add_integer(&notif, "player", cliId);
                    notify_player(&game[i], "POST", "game/quit", &notif, cliId);
                    clean_json_encoder(&notif);
                    break;
                }
                pthread_mutex_unlock(&playerMutex[(i * MAXPLAYER) + j]);
            }
            if (find) {
                break;
            }
        }
        pthread_mutex_unlock(&gameMutex[i]);
    }
    return SUCCESS;
}

int handler_player_move(int cliId, JsonParser* json) {
    char* move;
    int index, x = 0, y = 0;
    Player* p = NULL;
    boolean ok = false, mine = false;
    JsonEncoder reponse;
    //Verification arguments
    if (get_pos(json, "move") == JSON_ERROR) {
        return FAIL;
    }
    //Recup valeur
    move = get_string(json, "move");
    //Verif game existe
    index = search_client_game(cliId);
    if (index == ERR) {
        free(move);
        adderror("La game du client n'existe pas");
        return FAIL;
    }
    //Recup le joueur
    pthread_mutex_lock(&gameMutex[index]);
    for (int i = 0; i < MAXPLAYER; i++) {
        pthread_mutex_lock(&playerMutex[(index * MAXPLAYER) + i]);
        if (game[index].player[i]->ini && game[index].player[i]->id == cliId) {
            p = game[index].player[i];
            pthread_mutex_unlock(&playerMutex[(index * MAXPLAYER) + i]);
            break;
        }
        pthread_mutex_unlock(&playerMutex[(index * MAXPLAYER) + i]);
    }
    if (p == NULL) {
        pthread_mutex_unlock(&gameMutex[index]);
        free(move);
        adderror("Aucun joueur associé au client");
        return FAIL;
    }
    //Regarde si le joueur peut bouger
    if (strncmp(move, "up", 2) == 0) {
        if (p->y > 0 && !player_collision(&game[index], p->x, p->y - 1) && (game[index].map[p->x][p->y - 1] == '_' /*Vide*/ || game[index].map[p->x][p->y - 1] == '2' /*Mine*/)) {
            ok = true;
            //Bouge le joueur sur la carte
            p->y--;
            //Si marche sur une mine
            if (game[index].map[p->x][p->y] == '2') {
                game[index].map[p->x][p->y] = '_';
                mine = true;
                x = p->x;
                y = p->y;
            }
        }
    } else if (strncmp(move, "down", 4) == 0) {
        if (p->y < game[index].height && !player_collision(&game[index], p->x, p->y + 1) && (game[index].map[p->x][p->y + 1] == '_' /*Vide*/ || game[index].map[p->x][p->y + 1] == '2' /*Mine*/)) {
            ok = true;
            //Bouge le joueur sur la carte
            p->y++;
            //Si marche sur une mine
            if (game[index].map[p->x][p->y] == '2') {
                game[index].map[p->x][p->y] = '_';
                mine = true;
                x = p->x;
                y = p->y;
            }
        }
    } else if (strncmp(move, "left", 4) == 0) {
        if (p->x > 0 && !player_collision(&game[index], p->x - 1, p->y) && (game[index].map[p->x - 1][p->y] == '_' /*Vide*/ || game[index].map[p->x - 1][p->y] == '2' /*Mine*/)) {
            ok = true;
            //Bouge le joueur sur la carte
            p->x--;
            //Si marche sur une mine
            if (game[index].map[p->x][p->y] == '2') {
                game[index].map[p->x][p->y] = '_';
                mine = true;
                x = p->x;
                y = p->y;
            }
        }
    } else if (strncmp(move, "right", 4) == 0) {
        if (p->x < game[index].width && !player_collision(&game[index], p->x + 1, p->y) && (game[index].map[p->x + 1][p->y] == '_' /*Vide*/ || game[index].map[p->x + 1][p->y] == '2' /*Mine*/)) {
            ok = true;
            //Bouge le joueur sur la carte
            p->x++;
            //Si marche sur une mine
            if (game[index].map[p->x][p->y] == '2') {
                game[index].map[p->x][p->y] = '_';
                mine = true;
                x = p->x;
                y = p->y;
            }
        }
    } else {
        pthread_mutex_unlock(&gameMutex[index]);
        free(move);
        adderror("Le json du client est incorrect");
        return FAIL;
    }
    pthread_mutex_unlock(&gameMutex[index]);
    //Notifie les joueurs si mouvement ok
    if (ok) {
        ini_encoder(&reponse);
        add_integer(&reponse, "player", cliId);
        add_string(&reponse, "move", move);
        notify_player(&game[index], "POST", "player/position/update", &reponse, -1);
        //Si marche sur une mine
        if (mine) {
            printf("Mine %d %d", x, y);
        }
    }
    //Nettoyage
    clean_json_encoder(&reponse);
    free(move);
    return SUCCESS;
}