Commit | Line | Data |
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e8ea1e35 BA |
1 | const Discord = require('discord.js'); |
2 | const { token, channel } = require('./config/discord.json'); | |
3 | ||
2807f530 | 4 | // Node version in Ubuntu 16.04 does not know about URL class |
1611a25f | 5 | function getJsonFromUrl(url) { |
80ee5d5a BA |
6 | const query = url.substr(2); //starts with "/?" |
7 | let result = {}; | |
8 | query.split("&").forEach((part) => { | |
5bd05dba BA |
9 | const item = part.split("="); |
10 | result[item[0]] = decodeURIComponent(item[1]); | |
11 | }); | |
12 | return result; | |
2807f530 BA |
13 | } |
14 | ||
8b152ada | 15 | // Helper to safe-send some message through a (web-)socket: |
1611a25f | 16 | function send(socket, message) { |
f9c36b2d | 17 | if (!!socket && socket.readyState == 1) |
8b152ada BA |
18 | socket.send(JSON.stringify(message)); |
19 | } | |
20 | ||
16d06164 BA |
21 | // https://www.npmjs.com/package/ws - detect lost connections... |
22 | function noop() {} | |
23 | function heartbeat() { | |
24 | this.isAlive = true; | |
25 | } | |
26 | ||
1d184b4c | 27 | module.exports = function(wss) { |
71468011 | 28 | // Associative array page --> sid --> tmpId --> socket |
8418f0d7 | 29 | // "page" is either "/" for hall or "/game/some_gid" for Game, |
a041d5d8 | 30 | // or "/mygames" for Mygames page (simpler: no 'people' array). |
8418f0d7 BA |
31 | // tmpId is required if a same user (browser) has different tabs |
32 | let clients = {}; | |
7ebc0408 | 33 | // NOTE: only purpose of sidToPages = know when to delete keys in idToSid |
cafe0166 BA |
34 | let sidToPages = {}; |
35 | let idToSid = {}; | |
e8ea1e35 BA |
36 | const discordClient = new Discord.Client(); |
37 | let discordChannel = null; | |
38 | if (token.length > 0) { | |
4ac41c44 BA |
39 | discordClient.login(token); |
40 | discordClient.once("ready", () => { | |
e8ea1e35 BA |
41 | discordChannel = discordClient.channels.cache.get(channel); |
42 | }); | |
43 | } | |
5bd05dba | 44 | wss.on("connection", (socket, req) => { |
16d06164 BA |
45 | socket.isAlive = true; |
46 | socket.on('pong', heartbeat); | |
5bd05dba BA |
47 | const query = getJsonFromUrl(req.url); |
48 | const sid = query["sid"]; | |
cafe0166 | 49 | const id = query["id"]; |
8418f0d7 | 50 | const tmpId = query["tmpId"]; |
71468011 | 51 | const page = query["page"]; |
f14572c4 | 52 | const notifyRoom = (page, code, obj={}, except) => { |
a041d5d8 | 53 | if (!clients[page]) return; |
f14572c4 | 54 | except = except || []; |
a041d5d8 | 55 | Object.keys(clients[page]).forEach(k => { |
856f995c | 56 | if (except.includes(k)) return; |
a041d5d8 | 57 | Object.keys(clients[page][k]).forEach(x => { |
f14572c4 | 58 | if (k == sid && x == tmpId) return; |
a041d5d8 BA |
59 | send( |
60 | clients[page][k][x].socket, | |
7ebc0408 | 61 | Object.assign({ code: code, from: [sid, tmpId] }, obj) |
1611a25f | 62 | ); |
71468011 | 63 | }); |
92a523d1 BA |
64 | }); |
65 | }; | |
71468011 BA |
66 | const deleteConnexion = () => { |
67 | if (!clients[page] || !clients[page][sid] || !clients[page][sid][tmpId]) | |
68 | return; //job already done | |
69 | delete clients[page][sid][tmpId]; | |
1611a25f | 70 | if (Object.keys(clients[page][sid]).length == 0) { |
71468011 | 71 | delete clients[page][sid]; |
cafe0166 BA |
72 | const pgIndex = sidToPages[sid].findIndex(pg => pg == page); |
73 | sidToPages[sid].splice(pgIndex, 1); | |
1611a25f | 74 | if (Object.keys(clients[page]).length == 0) |
71468011 | 75 | delete clients[page]; |
cafe0166 BA |
76 | // Am I totally offline? |
77 | if (sidToPages[sid].length == 0) { | |
78 | delete sidToPages[sid]; | |
79 | delete idToSid[id]; | |
80 | } | |
71468011 BA |
81 | } |
82 | }; | |
1611a25f | 83 | |
f5f51daf BA |
84 | const doDisconnect = () => { |
85 | deleteConnexion(); | |
cafe0166 | 86 | // Nothing to notify when disconnecting from MyGames page: |
7ebc0408 | 87 | if (page != "/mygames") { |
f5f51daf BA |
88 | notifyRoom(page, "disconnect"); |
89 | if (page.indexOf("/game/") >= 0) | |
7ebc0408 | 90 | notifyRoom("/", "gdisconnect", { page: page }); |
f5f51daf BA |
91 | } |
92 | }; | |
a3ac374b | 93 | const messageListener = (objtxt) => { |
5bd05dba | 94 | let obj = JSON.parse(objtxt); |
1611a25f | 95 | switch (obj.code) { |
a3ac374b BA |
96 | // Wait for "connect" message to notify connection to the room, |
97 | // because if game loading is slow the message listener might | |
98 | // not be ready too early. | |
1611a25f | 99 | case "connect": { |
71468011 BA |
100 | notifyRoom(page, "connect"); |
101 | if (page.indexOf("/game/") >= 0) | |
7ebc0408 | 102 | notifyRoom("/", "gconnect", { page: page }); |
41c80bb6 | 103 | break; |
120fe373 | 104 | } |
8418f0d7 | 105 | case "disconnect": |
71468011 | 106 | // When page changes: |
f5f51daf | 107 | doDisconnect(); |
8418f0d7 | 108 | break; |
1611a25f | 109 | case "pollclients": { |
7ebc0408 BA |
110 | // From Game |
111 | let sockIds = {}; | |
71468011 | 112 | Object.keys(clients[page]).forEach(k => { |
0d5335de BA |
113 | sockIds[k] = {}; |
114 | Object.keys(clients[page][k]).forEach(x => { | |
115 | // Avoid polling my tmpId: no information to get | |
116 | if (k != sid || x != tmpId) | |
7ebc0408 | 117 | sockIds[k][x] = { focus: clients[page][k][x].focus }; |
0d5335de | 118 | }); |
8418f0d7 | 119 | }); |
aae89b49 | 120 | send(socket, { code: "pollclients", sockIds: sockIds }); |
92a523d1 | 121 | break; |
ac8f441c | 122 | } |
1611a25f BA |
123 | case "pollclientsandgamers": { |
124 | // From Hall | |
7ebc0408 | 125 | let sockIds = {}; |
71468011 | 126 | Object.keys(clients["/"]).forEach(k => { |
0d5335de BA |
127 | sockIds[k] = {}; |
128 | Object.keys(clients[page][k]).forEach(x => { | |
129 | // Avoid polling my tmpId: no information to get | |
130 | if (k != sid || x != tmpId) { | |
7ebc0408 BA |
131 | sockIds[k][x] = { |
132 | page: "/", | |
133 | focus: clients[page][k][x].focus | |
134 | }; | |
0d5335de BA |
135 | } |
136 | }); | |
71468011 BA |
137 | }); |
138 | // NOTE: a "gamer" could also just be an observer | |
139 | Object.keys(clients).forEach(p => { | |
cafe0166 | 140 | if (p.indexOf("/game/") >= 0) { |
71468011 | 141 | Object.keys(clients[p]).forEach(k => { |
0d5335de BA |
142 | if (!sockIds[k]) sockIds[k] = {}; |
143 | Object.keys(clients[p][k]).forEach(x => { | |
144 | if (k != sid || x != tmpId) { | |
7ebc0408 BA |
145 | sockIds[k][x] = { |
146 | page: p, | |
147 | focus: clients[p][k][x].focus | |
148 | }; | |
0d5335de BA |
149 | } |
150 | }); | |
71468011 BA |
151 | }); |
152 | } | |
8418f0d7 | 153 | }); |
aae89b49 | 154 | send(socket, { code: "pollclientsandgamers", sockIds: sockIds }); |
5a3da968 | 155 | break; |
8418f0d7 | 156 | } |
71468011 BA |
157 | |
158 | // Asking something: from is fully identified, | |
159 | // but the requested resource can be from any tmpId (except current!) | |
5a3da968 | 160 | case "askidentity": |
71468011 | 161 | case "asklastate": |
28b32b4f | 162 | case "askchallenges": |
f54f4c26 | 163 | case "askgame": { |
8b152ada | 164 | const pg = obj.page || page; //required for askidentity and askgame |
f9c36b2d | 165 | if (!!clients[pg] && !!clients[pg][obj.target]) { |
f54f4c26 | 166 | let tmpIds = Object.keys(clients[pg][obj.target]); |
1611a25f BA |
167 | if (obj.target == sid) { |
168 | // Targetting myself | |
910d631b | 169 | const idx_myTmpid = tmpIds.findIndex(x => x == tmpId); |
1611a25f | 170 | if (idx_myTmpid >= 0) tmpIds.splice(idx_myTmpid, 1); |
910d631b | 171 | } |
f54f4c26 BA |
172 | if (tmpIds.length > 0) { |
173 | const ttmpId = tmpIds[Math.floor(Math.random() * tmpIds.length)]; | |
174 | send( | |
175 | clients[pg][obj.target][ttmpId].socket, | |
176 | { code: obj.code, from: [sid,tmpId,page] } | |
177 | ); | |
178 | } | |
179 | } | |
180 | break; | |
181 | } | |
182 | ||
183 | // Special situation of the previous "case": | |
184 | // Full game can be asked to any observer. | |
185 | case "askfullgame": { | |
186 | if (!!clients[page]) { | |
187 | let sids = Object.keys(clients[page]).filter(k => k != sid); | |
188 | if (sids.length > 0) { | |
189 | // Pick a SID at random in this set, and ask full game: | |
190 | const rid = sids[Math.floor(Math.random() * sids.length)]; | |
191 | // ..to a random tmpId: | |
192 | const tmpIds = Object.keys(clients[page][rid]); | |
193 | const rtmpId = tmpIds[Math.floor(Math.random() * tmpIds.length)]; | |
194 | send( | |
195 | clients[page][rid][rtmpId].socket, | |
196 | { code: "askfullgame", from: [sid,tmpId] } | |
197 | ); | |
c7550017 BA |
198 | } else { |
199 | // I'm the only person who have the game for the moment: | |
200 | send(socket, { code: "fullgame", data: { empty: true } }); | |
f54f4c26 | 201 | } |
71468011 | 202 | } |
81d9ce72 | 203 | break; |
8418f0d7 | 204 | } |
71468011 BA |
205 | |
206 | // Some Hall events: target all tmpId's (except mine), | |
207 | case "refusechallenge": | |
208 | case "startgame": | |
209 | Object.keys(clients[page][obj.target]).forEach(x => { | |
210 | if (obj.target != sid || x != tmpId) | |
1611a25f | 211 | send( |
a041d5d8 | 212 | clients[page][obj.target][x].socket, |
aae89b49 | 213 | { code: obj.code, data: obj.data } |
1611a25f | 214 | ); |
c6788ecf | 215 | }); |
4d64881e | 216 | break; |
71468011 BA |
217 | |
218 | // Notify all room: mostly game events | |
5bd05dba | 219 | case "newchat": |
71468011 | 220 | case "newchallenge": |
28b32b4f | 221 | case "deletechallenge_s": |
c292ebb2 | 222 | case "newgame": |
5bd05dba | 223 | case "resign": |
b988c726 | 224 | case "abort": |
2cc10cdb | 225 | case "drawoffer": |
c292ebb2 | 226 | case "rematchoffer": |
2cc10cdb | 227 | case "draw": |
7ebc0408 | 228 | // "newgame" message can provide a page (corr Game --> Hall) |
4ac41c44 BA |
229 | if (obj.code == "newchallenge") { |
230 | // Filter out targeted challenges and correspondance games: | |
231 | if (!obj.data.to && obj.data.cadence.indexOf('d') < 0) { | |
232 | const challMsg = ( | |
233 | (obj.data.sender || "@nonymous") + " : " + | |
234 | "**" + obj.data.vname + "** " + | |
235 | "[" + obj.data.cadence + "] " | |
236 | ); | |
237 | if (!!discordChannel) discordChannel.send(challMsg); | |
238 | else | |
239 | // Log when running locally (dev, debug): | |
240 | console.log(challMsg); | |
241 | } | |
242 | delete obj.data["sender"]; | |
243 | } | |
2c5d7b20 BA |
244 | notifyRoom( |
245 | obj.page || page, obj.code, {data: obj.data}, obj.excluded); | |
c292ebb2 BA |
246 | break; |
247 | ||
248 | case "rnewgame": | |
585d0955 | 249 | // A rematch game started: |
f14572c4 BA |
250 | notifyRoom(page, "newgame", {data: obj.data}); |
251 | // Explicitely notify Hall if gametype == corr. | |
252 | // Live games will be polled from Hall after gconnect event. | |
253 | if (obj.data.cadence.indexOf('d') >= 0) | |
254 | notifyRoom("/", "newgame", {data: obj.data}); | |
e5c1d0fb BA |
255 | break; |
256 | ||
257 | case "newmove": { | |
aae89b49 | 258 | const dataWithFrom = { from: [sid,tmpId], data: obj.data }; |
f9c36b2d | 259 | // Special case re-send newmove only to opponent: |
e5c1d0fb | 260 | if (!!obj.target && !!clients[page][obj.target]) { |
f9c36b2d BA |
261 | Object.keys(clients[page][obj.target]).forEach(x => { |
262 | send( | |
a041d5d8 | 263 | clients[page][obj.target][x].socket, |
aae89b49 | 264 | Object.assign({ code: "newmove" }, dataWithFrom) |
f9c36b2d BA |
265 | ); |
266 | }); | |
e5c1d0fb BA |
267 | } else { |
268 | // NOTE: data.from is useful only to opponent | |
269 | notifyRoom(page, "newmove", dataWithFrom); | |
f9c36b2d | 270 | } |
f9c36b2d | 271 | break; |
e5c1d0fb | 272 | } |
f9c36b2d | 273 | case "gotmove": |
e5c1d0fb BA |
274 | if ( |
275 | !!clients[page][obj.target[0]] && | |
276 | !!clients[page][obj.target[0]][obj.target[1]] | |
277 | ) { | |
278 | send( | |
a041d5d8 | 279 | clients[page][obj.target[0]][obj.target[1]].socket, |
e01e086d | 280 | { code: "gotmove" } |
e5c1d0fb | 281 | ); |
f9c36b2d | 282 | } |
71468011 BA |
283 | break; |
284 | ||
48ab808f BA |
285 | case "result": |
286 | // Special case: notify all, 'transroom': Game --> Hall | |
aae89b49 | 287 | notifyRoom("/", "result", { gid: obj.gid, score: obj.score }); |
1611a25f BA |
288 | break; |
289 | ||
aae89b49 BA |
290 | case "mabort": { |
291 | const gamePg = "/game/" + obj.gid; | |
292 | if (!!clients[gamePg] && !!clients[gamePg][obj.target]) { | |
3b0f26c1 | 293 | Object.keys(clients[gamePg][obj.target]).forEach(x => { |
aae89b49 | 294 | send( |
a041d5d8 | 295 | clients[gamePg][obj.target][x].socket, |
aae89b49 BA |
296 | { code: "abort" } |
297 | ); | |
298 | }); | |
299 | } | |
300 | break; | |
301 | } | |
48ab808f | 302 | |
cafe0166 BA |
303 | case "notifyscore": |
304 | case "notifyturn": | |
305 | case "notifynewgame": | |
306 | if (!!clients["/mygames"]) { | |
307 | obj.targets.forEach(t => { | |
0234201f | 308 | const k = t.sid || idToSid[t.id]; |
cafe0166 BA |
309 | if (!!clients["/mygames"][k]) { |
310 | Object.keys(clients["/mygames"][k]).forEach(x => { | |
311 | send( | |
312 | clients["/mygames"][k][x].socket, | |
313 | { code: obj.code, data: obj.data } | |
314 | ); | |
315 | }); | |
316 | } | |
317 | }); | |
318 | } | |
319 | break; | |
320 | ||
a041d5d8 BA |
321 | case "getfocus": |
322 | case "losefocus": | |
49dad261 BA |
323 | if ( |
324 | !!clients[page] && | |
325 | !!clients[page][sid] && | |
326 | !!clients[page][sid][tmpId] | |
327 | ) { | |
328 | clients[page][sid][tmpId].focus = (obj.code == "getfocus"); | |
329 | } | |
f14572c4 | 330 | if (page == "/") notifyRoom("/", obj.code, { page: "/" }, [sid]); |
a041d5d8 BA |
331 | else { |
332 | // Notify game room + Hall: | |
f14572c4 BA |
333 | notifyRoom(page, obj.code, {}, [sid]); |
334 | notifyRoom("/", obj.code, { page: page }, [sid]); | |
a041d5d8 BA |
335 | } |
336 | break; | |
337 | ||
71468011 BA |
338 | // Passing, relaying something: from isn't needed, |
339 | // but target is fully identified (sid + tmpId) | |
28b32b4f | 340 | case "challenges": |
71468011 BA |
341 | case "fullgame": |
342 | case "game": | |
343 | case "identity": | |
344 | case "lastate": | |
8b152ada BA |
345 | { |
346 | const pg = obj.target[2] || page; //required for identity and game | |
2c5d7b20 BA |
347 | // NOTE: if in game we ask identity to opponent still in Hall, but |
348 | // leaving Hall, clients[pg] or clients[pg][target] could be undef. | |
aae89b49 BA |
349 | if (!!clients[pg] && !!clients[pg][obj.target[0]]) { |
350 | send( | |
a041d5d8 | 351 | clients[pg][obj.target[0]][obj.target[1]].socket, |
aae89b49 BA |
352 | { code:obj.code, data:obj.data } |
353 | ); | |
354 | } | |
2cc10cdb | 355 | break; |
8b152ada | 356 | } |
5bd05dba | 357 | } |
a3ac374b BA |
358 | }; |
359 | const closeListener = () => { | |
092de306 | 360 | // For browser or tab closing (including page reload): |
f5f51daf | 361 | doDisconnect(); |
a3ac374b | 362 | }; |
71468011 | 363 | // Update clients object: add new connexion |
a041d5d8 | 364 | const newElt = { socket: socket, focus: true }; |
71468011 | 365 | if (!clients[page]) |
a041d5d8 | 366 | clients[page] = { [sid]: {[tmpId]: newElt } }; |
71468011 | 367 | else if (!clients[page][sid]) |
a041d5d8 | 368 | clients[page][sid] = { [tmpId]: newElt }; |
71468011 | 369 | else |
a041d5d8 | 370 | clients[page][sid][tmpId] = newElt; |
cafe0166 BA |
371 | // Also update helper correspondances |
372 | if (!idToSid[id]) idToSid[id] = sid; | |
373 | if (!sidToPages[sid]) sidToPages[sid] = []; | |
374 | const pgIndex = sidToPages[sid].findIndex(pg => pg == page); | |
375 | if (pgIndex === -1) sidToPages[sid].push(page); | |
a3ac374b BA |
376 | socket.on("message", messageListener); |
377 | socket.on("close", closeListener); | |
5bd05dba | 378 | }); |
16d06164 BA |
379 | const interval = setInterval( |
380 | () => { | |
381 | wss.clients.forEach(ws => { | |
382 | if (ws.isAlive === false) return ws.terminate(); | |
383 | ws.isAlive = false; | |
384 | ws.ping(noop); | |
385 | }); | |
386 | }, | |
387 | 30000 | |
388 | ); | |
389 | wss.on('close', () => clearInterval(interval)); | |
1d184b4c | 390 | } |