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