server/models/Game.js

   1 const db = require("../utils/database");
   2 const UserModel = require("./User");
   3
   4 /*
   5  * Structure table Games:
   6  *   id: game id (int)
   7  *   vid: integer (variant id)
   8  *   fenStart: varchar (initial position)
   9  *   fen: varchar (current position)
  10  *   white: integer
  11  *   black: integer
  12  *   cadence: string
  13  *   score: varchar (result)
  14  *   scoreMsg: varchar ("Time", "Mutual agreement"...)
  15  *   created: datetime
  16  *   drawOffer: char ('w','b' or '' for none)
  17  *   rematchOffer: char (similar to drawOffer)
  18  *   randomness: integer
  19  *   deletedByWhite: boolean
  20  *   deletedByBlack: boolean
  21  *   chatReadWhite: datetime
  22  *   chatReadBlack: datetime
  23  *
  24  * Structure table Moves:
  25  *   gid: ref game id
  26  *   squares: varchar (description)
  27  *   played: datetime
  28  *   idx: integer
  29  *
  30  * Structure table Chats:
  31  *   gid: game id (int)
  32  *   msg: varchar
  33  *   name: varchar
  34  *   added: datetime
  35  */
  36
  37 const GameModel = {
  38
  39   checkGameInfo: function(g) {
  40     return (
  41       g.vid.toString().match(/^[0-9]+$/) &&
  42       g.cadence.match(/^[0-9dhms +]+$/) &&
  43       g.randomness.toString().match(/^[0-2]$/) &&
  44       g.fen.match(/^[a-zA-Z0-9, /-]*$/) &&
  45       g.players.length == 2 &&
  46       g.players.every(p => p.id.toString().match(/^[0-9]+$/))
  47     );
  48   },
  49
  50   incrementCounter: function(vid, cb) {
  51     db.serialize(function() {
  52       let query =
  53         "UPDATE GameStat " +
  54         "SET total = total + 1 " +
  55         "WHERE vid = " + vid;
  56       db.run(query, cb);
  57     });
  58   },
  59
  60   create: function(vid, fen, randomness, cadence, players, cb) {
  61     db.serialize(function() {
  62       let query =
  63         "INSERT INTO Games " +
  64         "(" +
  65           "vid, fenStart, fen, randomness, " +
  66           "white, black, " +
  67           "cadence, created" +
  68         ") " +
  69         "VALUES " +
  70         "(" +
  71           vid + ",'" + fen + "','" + fen + "'," + randomness + "," +
  72           players[0].id + "," + players[1].id + "," +
  73           "'" + cadence + "'," + Date.now() +
  74         ")";
  75       db.run(query, function(err) {
  76         cb(err, { id: this.lastID });
  77       });
  78     });
  79   },
  80
  81   // TODO: some queries here could be async
  82   getOne: function(id, cb) {
  83     // NOTE: ignoring errors (shouldn't happen at this stage)
  84     db.serialize(function() {
  85       let query =
  86         "SELECT " +
  87           "g.id, g.fen, g.fenStart, g.cadence, g.created, " +
  88           "g.white, g.black, g.randomness, g.score, g.scoreMsg, " +
  89           "g.chatReadWhite, g.chatReadBlack, g.drawOffer, " +
  90           // TODO: vid and vname are redundant
  91           "g.rematchOffer, v.id as vid, v.name AS vname " +
  92         "FROM Games g " +
  93         "JOIN Variants v " +
  94         "  ON g.vid = v.id " +
  95         "WHERE g.id = " + id;
  96       db.get(query, (err, gameInfo) => {
  97         if (!gameInfo) {
  98           cb(err || { errmsg: "Game not found" }, undefined);
  99           return;
 100         }
 101         query =
 102           "SELECT id, name " +
 103           "FROM Users " +
 104           "WHERE id IN (" + gameInfo.white + "," + gameInfo.black + ")";
 105         db.all(query, (err2, players) => {
 106           if (players[0].id == gameInfo.black) players = players.reverse();
 107           // The original players' IDs info isn't required anymore
 108           delete gameInfo["white"];
 109           delete gameInfo["black"];
 110           query =
 111             "SELECT squares, played, idx " +
 112             "FROM Moves " +
 113             "WHERE gid = " + id;
 114           db.all(query, (err3, moves) => {
 115             query =
 116               "SELECT msg, name, added " +
 117               "FROM Chats " +
 118               "WHERE gid = " + id;
 119             db.all(query, (err4, chats) => {
 120               const game = Object.assign(
 121                 {},
 122                 gameInfo,
 123                 {
 124                   players: players,
 125                   moves: moves,
 126                   chats: chats
 127                 }
 128               );
 129               cb(null, game);
 130             });
 131           });
 132         });
 133       });
 134     });
 135   },
 136
 137   // For display on Hall: no need for moves or chats
 138   getObserved: function(uid, cursor, cb) {
 139     db.serialize(function() {
 140       let query =
 141         "SELECT id, vid, cadence, created, score, white, black " +
 142         "FROM Games " +
 143         "WHERE created < " + cursor + " ";
 144       if (uid > 0) {
 145         query +=
 146           "  AND white <> " + uid + " " +
 147           "  AND black <> " + uid + " ";
 148       }
 149       query +=
 150         "ORDER BY created DESC " +
 151         "LIMIT 20"; //TODO: 20 hard-coded...
 152       db.all(query, (err, games) => {
 153         // Query players names
 154         let pids = {};
 155         games.forEach(g => {
 156           if (!pids[g.white]) pids[g.white] = true;
 157           if (!pids[g.black]) pids[g.black] = true;
 158         });
 159         UserModel.getByIds(Object.keys(pids), (err2, users) => {
 160           let names = {};
 161           users.forEach(u => { names[u.id] = u.name; });
 162           cb(
 163             err,
 164             games.map(
 165               g => {
 166                 return {
 167                   id: g.id,
 168                   vid: g.vid,
 169                   cadence: g.cadence,
 170                   created: g.created,
 171                   score: g.score,
 172                   players: [
 173                     { id: g.white, name: names[g.white] },
 174                     { id: g.black, name: names[g.black] }
 175                   ]
 176                 };
 177               }
 178             )
 179           );
 180         });
 181       });
 182     });
 183   },
 184
 185   // For display on MyGames: registered user only
 186   getRunning: function(uid, cb) {
 187     db.serialize(function() {
 188       let query =
 189         "SELECT g.id, g.cadence, g.created, " +
 190           "g.white, g.black, v.name AS vname " +
 191         "FROM Games g " +
 192         "JOIN Variants v " +
 193         "  ON g.vid = v.id " +
 194         "WHERE score = '*' AND (white = " + uid + " OR black = " + uid + ")";
 195       db.all(query, (err, games) => {
 196         // Get movesCount (could be done in // with next query)
 197         query =
 198           "SELECT gid, COUNT(*) AS nbMoves " +
 199           "FROM Moves " +
 200           "WHERE gid IN " + "(" + games.map(g => g.id).join(",") + ") " +
 201           "GROUP BY gid";
 202         db.all(query, (err, mstats) => {
 203           let movesCounts = {};
 204           mstats.forEach(ms => { movesCounts[ms.gid] = ms.nbMoves; });
 205           // Query player names
 206           let pids = {};
 207           games.forEach(g => {
 208             if (!pids[g.white]) pids[g.white] = true;
 209             if (!pids[g.black]) pids[g.black] = true;
 210           });
 211           UserModel.getByIds(Object.keys(pids), (err2, users) => {
 212             let names = {};
 213             users.forEach(u => { names[u.id] = u.name; });
 214             cb(
 215               null,
 216               games.map(
 217                 g => {
 218                   return {
 219                     id: g.id,
 220                     vname: g.vname,
 221                     cadence: g.cadence,
 222                     created: g.created,
 223                     score: g.score,
 224                     movesCount: movesCounts[g.id] || 0,
 225                     players: [
 226                       { id: g.white, name: names[g.white] },
 227                       { id: g.black, name: names[g.black] }
 228                     ]
 229                   };
 230                 }
 231               )
 232             );
 233           });
 234         });
 235       });
 236     });
 237   },
 238
 239   // These games could be deleted on some side. movesCount not required
 240   getCompleted: function(uid, cursor, cb) {
 241     db.serialize(function() {
 242       let query =
 243         "SELECT g.id, g.cadence, g.created, g.score, g.scoreMsg, " +
 244           "g.white, g.black, g.deletedByWhite, g.deletedByBlack, " +
 245           "v.name AS vname " +
 246         "FROM Games g " +
 247         "JOIN Variants v " +
 248         "  ON g.vid = v.id " +
 249         "WHERE " +
 250         "  score <> '*' AND" +
 251         "  created < " + cursor + " AND" +
 252         "  (" +
 253         "    (" +
 254         "      white = " + uid + " AND" +
 255         "      (deletedByWhite IS NULL OR NOT deletedByWhite)" +
 256         "    )" +
 257         "    OR " +
 258         "    (" +
 259         "      black = " + uid + " AND" +
 260         "      (deletedByBlack IS NULL OR NOT deletedByBlack)" +
 261         "    )" +
 262         "  ) ";
 263       query +=
 264         "ORDER BY created DESC " +
 265         "LIMIT 20";
 266       db.all(query, (err, games) => {
 267         // Query player names
 268         let pids = {};
 269         games.forEach(g => {
 270           if (!pids[g.white]) pids[g.white] = true;
 271           if (!pids[g.black]) pids[g.black] = true;
 272         });
 273         UserModel.getByIds(Object.keys(pids), (err2, users) => {
 274           let names = {};
 275           users.forEach(u => { names[u.id] = u.name; });
 276           cb(
 277             null,
 278             games.map(
 279               g => {
 280                 return {
 281                   id: g.id,
 282                   vname: g.vname,
 283                   cadence: g.cadence,
 284                   created: g.created,
 285                   score: g.score,
 286                   scoreMsg: g.scoreMsg,
 287                   players: [
 288                     { id: g.white, name: names[g.white] },
 289                     { id: g.black, name: names[g.black] }
 290                   ],
 291                   deletedByWhite: g.deletedByWhite,
 292                   deletedByBlack: g.deletedByBlack
 293                 };
 294               }
 295             )
 296           );
 297         });
 298       });
 299     });
 300   },
 301
 302   getPlayers: function(id, cb) {
 303     db.serialize(function() {
 304       const query =
 305         "SELECT white, black " +
 306         "FROM Games " +
 307         "WHERE id = " + id;
 308       db.get(query, (err, players) => {
 309         return cb(err, players);
 310       });
 311     });
 312   },
 313
 314   checkGameUpdate: function(obj) {
 315     // Check all that is possible (required) in obj:
 316     return (
 317       (
 318         !obj.move || !!(obj.move.idx.toString().match(/^[0-9]+$/))
 319       ) && (
 320         !obj.drawOffer || !!(obj.drawOffer.match(/^[wbtn]$/))
 321       ) && (
 322         !obj.rematchOffer || !!(obj.rematchOffer.match(/^[wbn]$/))
 323       ) && (
 324         // TODO: check if commas are still used (probably not)
 325         !obj.fen || !!(obj.fen.match(/^[a-zA-Z0-9,. /-]*$/))
 326       ) && (
 327         !obj.score || !!(obj.score.match(/^[012?*\/-]+$/))
 328       ) && (
 329         !obj.chatRead || ['w','b'].includes(obj.chatRead)
 330       ) && (
 331         !obj.scoreMsg || !!(obj.scoreMsg.match(/^[a-zA-Z ]+$/))
 332       ) && (
 333         !obj.chat || UserModel.checkNameEmail({name: obj.chat.name})
 334       )
 335     );
 336   },
 337
 338   // obj can have fields move, chat, fen, drawOffer and/or score + message
 339   update: function(id, obj, cb) {
 340     db.parallelize(function() {
 341       let updateQuery =
 342         "UPDATE Games " +
 343         "SET ";
 344       let modifs = "";
 345       // NOTE: if drawOffer is set, we should check that it's player's turn
 346       // A bit overcomplicated. Let's trust the client on that for now...
 347       if (!!obj.drawOffer) {
 348         if (obj.drawOffer == "n")
 349           // Special "None" update
 350           obj.drawOffer = "";
 351         modifs += "drawOffer = '" + obj.drawOffer + "',";
 352       }
 353       if (!!obj.rematchOffer) {
 354         if (obj.rematchOffer == "n")
 355           // Special "None" update
 356           obj.rematchOffer = "";
 357         modifs += "rematchOffer = '" + obj.rematchOffer + "',";
 358       }
 359       if (!!obj.fen) modifs += "fen = '" + obj.fen + "',";
 360       if (!!obj.deletedBy) {
 361         const myColor = obj.deletedBy == 'w' ? "White" : "Black";
 362         modifs += "deletedBy" + myColor + " = true,";
 363       }
 364       if (!!obj.chatRead) {
 365         const myColor = obj.chatRead == 'w' ? "White" : "Black";
 366         modifs += "chatRead" + myColor + " = " + Date.now() + ",";
 367       }
 368       if (!!obj.score) {
 369         modifs += "score = '" + obj.score + "'," +
 370                   "scoreMsg = '" + obj.scoreMsg + "',";
 371       }
 372       const finishAndSendQuery = () => {
 373         modifs = modifs.slice(0, -1); //remove last comma
 374         if (modifs.length > 0) {
 375           updateQuery += modifs + " WHERE id = " + id;
 376           db.run(updateQuery);
 377         }
 378         cb(null);
 379       };
 380       if (!!obj.move || (!!obj.score && obj.scoreMsg == "Time")) {
 381         // Security: only update moves if index is right,
 382         // and score with scoreMsg "Time" if really lost on time.
 383         let query =
 384           "SELECT MAX(idx) AS maxIdx, MAX(played) AS lastPlayed " +
 385           "FROM Moves " +
 386           "WHERE gid = " + id;
 387         db.get(query, (err, ret) => {
 388           if (!!obj.move ) {
 389             if (!ret.maxIdx || ret.maxIdx + 1 == obj.move.idx) {
 390               query =
 391                 "INSERT INTO Moves (gid, squares, played, idx) VALUES " +
 392                 "(" + id + ",?," + Date.now() + "," + obj.move.idx + ")";
 393               db.run(query, JSON.stringify(obj.move.squares));
 394               finishAndSendQuery();
 395             }
 396             else cb({ errmsg: "Wrong move index" });
 397           }
 398           else {
 399             if (ret.maxIdx < 2) cb({ errmsg: "Time not over" });
 400             else {
 401               // We also need the game cadence
 402               query =
 403                 "SELECT cadence " +
 404                 "FROM Games " +
 405                 "WHERE id = " + id;
 406               db.get(query, (err2, ret2) => {
 407                 const daysTc = parseInt(ret2.cadence.match(/^[0-9]+/)[0]);
 408                 if (Date.now() - ret.lastPlayed > daysTc * 24 * 3600 * 1000)
 409                   finishAndSendQuery();
 410                 else cb({ errmsg: "Time not over" });
 411               });
 412             }
 413           }
 414         });
 415       }
 416       else finishAndSendQuery();
 417       // NOTE: chat and delchat are mutually exclusive
 418       if (!!obj.chat) {
 419         const query =
 420           "INSERT INTO Chats (gid, msg, name, added) VALUES ("
 421             + id + ",?,'" + obj.chat.name + "'," + Date.now() + ")";
 422         db.run(query, obj.chat.msg);
 423       }
 424       else if (obj.delchat) {
 425         const query =
 426           "DELETE " +
 427           "FROM Chats " +
 428           "WHERE gid = " + id;
 429         db.run(query);
 430       }
 431       if (!!obj.deletedBy) {
 432         // Did my opponent delete it too?
 433         let selection =
 434           "deletedBy" +
 435           (obj.deletedBy == 'w' ? "Black" : "White") +
 436           " AS deletedByOpp";
 437         const query =
 438           "SELECT " + selection + " " +
 439           "FROM Games " +
 440           "WHERE id = " + id;
 441         db.get(query, (err,ret) => {
 442           // If yes: just remove game
 443           if (!!ret.deletedByOpp) GameModel.remove(id);
 444         });
 445       }
 446     });
 447   },
 448
 449   remove: function(id_s) {
 450     const suffix =
 451       Array.isArray(id_s)
 452         ? " IN (" + id_s.join(",") + ")"
 453         : " = " + id_s;
 454     db.parallelize(function() {
 455       let query =
 456         "DELETE FROM Games " +
 457         "WHERE id " + suffix;
 458       db.run(query);
 459       query =
 460         "DELETE FROM Moves " +
 461         "WHERE gid " + suffix;
 462       db.run(query);
 463       query =
 464         "DELETE FROM Chats " +
 465         "WHERE gid " + suffix;
 466       db.run(query);
 467     });
 468   },
 469
 470   cleanGamesDb: function() {
 471     const tsNow = Date.now();
 472     // 86400000 = 24 hours in milliseconds
 473     const day = 86400000;
 474     db.serialize(function() {
 475       let query =
 476         "SELECT id, created " +
 477         "FROM Games";
 478       db.all(query, (err, games) => {
 479         query =
 480           "SELECT gid, count(*) AS nbMoves, MAX(played) AS lastMaj " +
 481           "FROM Moves " +
 482           "GROUP BY gid";
 483         db.all(query, (err2, mstats) => {
 484           // Reorganize moves data to avoid too many array lookups:
 485           let movesGroups = {};
 486           mstats.forEach(ms => {
 487             movesGroups[ms.gid] = {
 488               nbMoves: ms.nbMoves,
 489               lastMaj: ms.lastMaj
 490             };
 491           });
 492           // Remove games still not really started,
 493           // with no action in the last 2 weeks:
 494           let toRemove = [];
 495           games.forEach(g => {
 496             if (
 497               (
 498                 !movesGroups[g.id] &&
 499                 tsNow - g.created > 14*day
 500               )
 501               ||
 502               (
 503                 !!movesGroups[g.id] &&
 504                 movesGroups[g.id].nbMoves == 1 &&
 505                 tsNow - movesGroups[g.id].lastMaj > 14*day
 506               )
 507             ) {
 508               toRemove.push(g.id);
 509             }
 510           });
 511           if (toRemove.length > 0) GameModel.remove(toRemove);
 512         });
 513       });
 514     });
 515   }
 516
 517 };
 518
 519 module.exports = GameModel;