da59b4a6dbe6433e84beeceaa501b13fc12f0f0d
[vchess.git] / server / models / Game.js
1 var 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 * timeControl: string
11 * score: varchar (result)
12 * scoreMsg: varchar ("Time", "Mutual agreement"...)
13 * created: datetime
14 * drawOffer: boolean
15 *
16 * Structure table Players:
17 * gid: ref game id
18 * uid: ref user id
19 * color: character
20 *
21 * Structure table Moves:
22 * gid: ref game id
23 * squares: varchar (description)
24 * played: datetime
25 * idx: integer
26 *
27 * Structure table Chats:
28 * gid: game id (int)
29 * msg: varchar
30 * name: varchar
31 * added: datetime
32 */
33
34 const GameModel =
35 {
36 checkGameInfo: function(g) {
37 if (!g.vid.toString().match(/^[0-9]+$/))
38 return "Wrong variant ID";
39 if (!g.vname.match(/^[a-zA-Z0-9]+$/))
40 return "Wrong variant name";
41 if (!g.timeControl.match(/^[0-9dhms +]+$/))
42 return "Wrong characters in time control";
43 if (!g.fen.match(/^[a-zA-Z0-9, /-]*$/))
44 return "Bad FEN string";
45 if (g.players.length != 2)
46 return "Need exactly 2 players";
47 if (g.players.some(p => !p.id.toString().match(/^[0-9]+$/)))
48 return "Wrong characters in player ID";
49 return "";
50 },
51
52 create: function(vid, fen, timeControl, players, cb)
53 {
54 db.serialize(function() {
55 let query =
56 "INSERT INTO Games"
57 + " (vid, fenStart, fen, score, timeControl, created, drawOffer)"
58 + " VALUES (" + vid + ",'" + fen + "','" + fen + "','*','"
59 + timeControl + "'," + Date.now() + "," + false + ")";
60 db.run(query, function(err) {
61 if (!!err)
62 return cb(err);
63 players.forEach((p,idx) => {
64 const color = (idx==0 ? "w" : "b");
65 query =
66 "INSERT INTO Players VALUES " +
67 "(" + this.lastID + "," + p.id + ",'" + color + "')";
68 db.run(query);
69 });
70 cb(null, {gid: this.lastID});
71 });
72 });
73 },
74
75 // TODO: queries here could be async, and wait for all to complete
76 getOne: function(id, cb)
77 {
78 db.serialize(function() {
79 // TODO: optimize queries?
80 let query =
81 // NOTE: g.scoreMsg can be NULL
82 // (in this case score = "*" and no reason to look at it)
83 "SELECT g.id, g.vid, g.fen, g.fenStart, g.timeControl, g.score, " +
84 "g.scoreMsg, v.name AS vname " +
85 "FROM Games g " +
86 "JOIN Variants v " +
87 " ON g.vid = v.id " +
88 "WHERE g.id = " + id;
89 db.get(query, (err,gameInfo) => {
90 if (!!err)
91 return cb(err);
92 query =
93 "SELECT p.uid, p.color, u.name " +
94 "FROM Players p " +
95 "JOIN Users u " +
96 " ON p.uid = u.id " +
97 "WHERE p.gid = " + id;
98 db.all(query, (err2,players) => {
99 if (!!err2)
100 return cb(err2);
101 query =
102 "SELECT squares, played, idx " +
103 "FROM Moves " +
104 "WHERE gid = " + id;
105 db.all(query, (err3,moves) => {
106 if (!!err3)
107 return cb(err3);
108 query =
109 "SELECT msg, name, added " +
110 "FROM Chats " +
111 "WHERE gid = " + id;
112 db.all(query, (err4,chats) => {
113 if (!!err4)
114 return cb(err4);
115 const game = Object.assign({},
116 gameInfo,
117 {
118 players: players,
119 moves: moves,
120 chats: chats,
121 }
122 );
123 return cb(null, game);
124 });
125 });
126 });
127 });
128 });
129 },
130
131 getByUser: function(uid, excluded, cb)
132 {
133 db.serialize(function() {
134 // Next query is fine because a player appear at most once in a game
135 const query =
136 "SELECT gid " +
137 "FROM Players " +
138 "WHERE uid " + (excluded ? "<>" : "=") + " " + uid;
139 db.all(query, (err,gameIds) => {
140 if (!!err)
141 return cb(err);
142 gameIds = gameIds || []; //might be empty
143 let gameArray = [];
144 for (let i=0; i<gameIds.length; i++)
145 {
146 GameModel.getOne(gameIds[i]["gid"], (err2,game) => {
147 if (!!err2)
148 return cb(err2);
149 gameArray.push(game);
150 // Call callback function only when gameArray is complete:
151 if (i == gameIds.length - 1)
152 return cb(null, gameArray);
153 });
154 }
155 });
156 });
157 },
158
159 getPlayers: function(id, cb)
160 {
161 db.serialize(function() {
162 const query =
163 "SELECT id " +
164 "FROM Players " +
165 "WHERE gid = " + id;
166 db.all(query, (err,players) => {
167 return cb(err, players);
168 });
169 });
170 },
171
172 checkGameUpdate: function(obj)
173 {
174 // Check all that is possible (required) in obj:
175 if (!!obj.move)
176 {
177 if (!obj.move.played.toString().match(/^[0-9]+$/))
178 return "Wrong move played time";
179 if (!obj.move.idx.toString().match(/^[0-9]+$/))
180 return "Wrong move index";
181 }
182 if (!!obj.fen && !obj.fen.match(/^[a-zA-Z0-9, /-]*$/))
183 return "Wrong FEN string";
184 if (!!obj.score && !obj.score.match(/^[012?*\/-]+$/))
185 return "Wrong characters in score";
186 if (!!obj.scoreMsg && !obj.scoreMsg.match(/^[a-zA-Z ]+$/))
187 return "Wrong characters in score message";
188 if (!!obj.chat)
189 return UserModel.checkNameEmail({name: obj.chat.name});
190 return "";
191 },
192
193 // obj can have fields move, chat, fen, drawOffer and/or score
194 update: function(id, obj)
195 {
196 db.parallelize(function() {
197 let query =
198 "UPDATE Games " +
199 "SET ";
200 let modifs = "";
201 if (!!obj.message)
202 modifs += "message = message || ' ' || '" + obj.message + "',";
203 if ([true,false].includes(obj.drawOffer))
204 modifs += "drawOffer = " + obj.drawOffer + ",";
205 if (!!obj.fen)
206 modifs += "fen = '" + obj.fen + "',";
207 if (!!obj.score)
208 modifs += "score = '" + obj.score + "',";
209 if (!!obj.scoreMsg)
210 modifs += "scoreMsg = '" + obj.scoreMsg + "',";
211 modifs = modifs.slice(0,-1); //remove last comma
212 if (modifs.length > 0)
213 {
214 query += modifs + " WHERE id = " + id;
215 db.run(query);
216 }
217 if (!!obj.move)
218 {
219 const m = obj.move;
220 query =
221 "INSERT INTO Moves (gid, squares, played, idx) VALUES " +
222 "(" + id + ",?," + m.played + "," + m.idx + ")";
223 db.run(query, JSON.stringify(m.squares));
224 }
225 if (!!obj.chat)
226 {
227 query =
228 "INSERT INTO Chats (gid, msg, name, added) VALUES ("
229 + id + ",?,'" + obj.chat.name + "'," + Date.now() + ")";
230 db.run(query, obj.chat.msg);
231 }
232 });
233 },
234
235 remove: function(id)
236 {
237 db.parallelize(function() {
238 let query =
239 "DELETE FROM Games " +
240 "WHERE id = " + id;
241 db.run(query);
242 query =
243 "DELETE FROM Players " +
244 "WHERE gid = " + id;
245 db.run(query);
246 query =
247 "DELETE FROM Moves " +
248 "WHERE gid = " + id;
249 db.run(query);
250 query =
251 "DELETE FROM Chats " +
252 "WHERE gid = " + id;
253 db.run(query);
254 });
255 },
256
257 cleanGamesDb: function()
258 {
259 const tsNow = Date.now();
260 // 86400000 = 24 hours in milliseconds
261 const day = 86400000;
262 db.serialize(function() {
263 let query =
264 "SELECT id,score " +
265 "FROM Games ";
266 db.all(query, (err,games) => {
267 games.forEach(g => {
268 query =
269 "SELECT max(played) AS lastMaj " +
270 "FROM Moves " +
271 "WHERE gid = " + g.id;
272 db.get(query, (err2,updated) => {
273 if (!updated && tsNow - g.created > 7*day)
274 return GameModel.remove(g.id);
275 const lastMaj = updated.lastMaj;
276 if (g.score != "*" && tsNow - lastMaj > 7*day ||
277 g.score == "*" && tsNow - lastMaj > 91*day)
278 {
279 GameModel.remove(g.id);
280 }
281 });
282 });
283 });
284 });
285 },
286 }
287
288 module.exports = GameModel;