| 1 | var db = require("../utils/database"); |
| 2 | |
| 3 | /* |
| 4 | * Structure table Games: |
| 5 | * id: game id (int) |
| 6 | * vid: integer (variant id) |
| 7 | * fenStart: varchar (initial position) |
| 8 | * fen: varchar (current position) |
| 9 | * timeControl: string |
| 10 | * score: varchar (result) |
| 11 | * |
| 12 | * Structure table Players: |
| 13 | * gid: ref game id |
| 14 | * uid: ref user id |
| 15 | * color: character |
| 16 | * |
| 17 | * Structure table Moves: |
| 18 | * gid: ref game id |
| 19 | * squares: varchar (description) |
| 20 | * message: text |
| 21 | * played: datetime |
| 22 | * idx: integer |
| 23 | */ |
| 24 | |
| 25 | const GameModel = |
| 26 | { |
| 27 | create: function(vid, fen, timeControl, players, cb) |
| 28 | { |
| 29 | db.serialize(function() { |
| 30 | let query = |
| 31 | "INSERT INTO Games (vid, fenStart, fen, score, timeControl) VALUES " + |
| 32 | "(" + vid + ",'" + fen + "','" + fen + "','*','" + timeControl + "')"; |
| 33 | db.run(query, function(err) { |
| 34 | if (!!err) |
| 35 | return cb(err); |
| 36 | players.forEach((p,idx) => { |
| 37 | const color = (idx==0 ? "w" : "b"); |
| 38 | query = |
| 39 | "INSERT INTO Players VALUES " + |
| 40 | "(" + this.lastID + "," + p.id + ",'" + color + "')"; |
| 41 | db.run(query); |
| 42 | }); |
| 43 | cb(null, {gid: this.lastID}); |
| 44 | }); |
| 45 | }); |
| 46 | }, |
| 47 | |
| 48 | // TODO: queries here could be async, and wait for all to complete |
| 49 | getOne: function(id, cb) |
| 50 | { |
| 51 | db.serialize(function() { |
| 52 | // TODO: optimize queries? |
| 53 | let query = |
| 54 | "SELECT g.id, g.vid, g.fen, g.fenStart, g.timeControl, g.score, " + |
| 55 | "v.name AS vname " + |
| 56 | "FROM Games g " + |
| 57 | "JOIN Variants v " + |
| 58 | " ON g.vid = v.id " + |
| 59 | "WHERE g.id = " + id; |
| 60 | db.get(query, (err,gameInfo) => { |
| 61 | if (!!err) |
| 62 | return cb(err); |
| 63 | query = |
| 64 | "SELECT p.uid, p.color, u.name " + |
| 65 | "FROM Players p " + |
| 66 | "JOIN Users u " + |
| 67 | " ON p.uid = u.id " + |
| 68 | "WHERE p.gid = " + id; |
| 69 | db.all(query, (err2,players) => { |
| 70 | if (!!err2) |
| 71 | return cb(err2); |
| 72 | query = |
| 73 | "SELECT squares, message, played, idx " + |
| 74 | "FROM Moves " + |
| 75 | "WHERE gid = " + id; |
| 76 | db.all(query, (err3,moves) => { |
| 77 | if (!!err3) |
| 78 | return cb(err3); |
| 79 | const game = Object.assign({}, |
| 80 | gameInfo, |
| 81 | { |
| 82 | players: players, |
| 83 | moves: moves |
| 84 | } |
| 85 | ); |
| 86 | return cb(null, game); |
| 87 | }); |
| 88 | }); |
| 89 | }); |
| 90 | }); |
| 91 | }, |
| 92 | |
| 93 | getByUser: function(uid, excluded, cb) |
| 94 | { |
| 95 | db.serialize(function() { |
| 96 | // Next query is fine because a player appear at most once in a game |
| 97 | const query = |
| 98 | "SELECT gid " + |
| 99 | "FROM Players " + |
| 100 | "WHERE uid " + (excluded ? "<>" : "=") + " " + uid; |
| 101 | db.all(query, (err,gameIds) => { |
| 102 | if (!!err) |
| 103 | return cb(err); |
| 104 | gameIds = gameIds || []; //might be empty |
| 105 | let gameArray = []; |
| 106 | for (let i=0; i<gameIds.length; i++) |
| 107 | { |
| 108 | GameModel.getOne(gameIds[i]["gid"], (err2,game) => { |
| 109 | if (!!err2) |
| 110 | return cb(err2); |
| 111 | gameArray.push(game); |
| 112 | // Call callback function only when gameArray is complete: |
| 113 | if (i == gameIds.length - 1) |
| 114 | return cb(null, gameArray); |
| 115 | }); |
| 116 | } |
| 117 | }); |
| 118 | }); |
| 119 | }, |
| 120 | |
| 121 | getPlayers: function(id, cb) |
| 122 | { |
| 123 | db.serialize(function() { |
| 124 | const query = |
| 125 | "SELECT id " + |
| 126 | "FROM Players " + |
| 127 | "WHERE gid = " + id; |
| 128 | db.all(query, (err,players) => { |
| 129 | return cb(err, players); |
| 130 | }); |
| 131 | }); |
| 132 | }, |
| 133 | |
| 134 | // obj can have fields move, fen and/or score |
| 135 | update: function(id, obj) |
| 136 | { |
| 137 | db.parallelize(function() { |
| 138 | let query = |
| 139 | "UPDATE Games " + |
| 140 | "SET "; |
| 141 | if (!!obj.fen) |
| 142 | query += "fen = '" + obj.fen + "',"; |
| 143 | if (!!obj.score) |
| 144 | query += "score = '" + obj.score + "',"; |
| 145 | query = query.slice(0,-1); //remove last comma |
| 146 | query += " WHERE id = " + id; |
| 147 | db.run(query); |
| 148 | if (!!obj.move) |
| 149 | { |
| 150 | const m = obj.move; |
| 151 | query = |
| 152 | "INSERT INTO Moves (gid, squares, message, played, idx) VALUES " + |
| 153 | "(" + id + ",'" + JSON.stringify(m.squares) + "','" + m.message + |
| 154 | "'," + m.played + "," + m.idx + ")"; |
| 155 | db.run(query); |
| 156 | } |
| 157 | }); |
| 158 | }, |
| 159 | |
| 160 | remove: function(id) |
| 161 | { |
| 162 | db.parallelize(function() { |
| 163 | let query = |
| 164 | "DELETE FROM Games " + |
| 165 | "WHERE id = " + id; |
| 166 | db.run(query); |
| 167 | query = |
| 168 | "DELETE FROM Players " + |
| 169 | "WHERE gid = " + id; |
| 170 | db.run(query); |
| 171 | query = |
| 172 | "DELETE FROM Moves " + |
| 173 | "WHERE gid = " + id; |
| 174 | db.run(query); |
| 175 | }); |
| 176 | }, |
| 177 | } |
| 178 | |
| 179 | module.exports = GameModel; |