592d2a90a794fa0de35b27a2c21b27a29e61994b
[xogo.git] / app.js
1 let $ = document; //shortcut
2
3 ///////////////////
4 // Initialisations
5
6 // https://stackoverflow.com/a/27747377/12660887
7 function dec2hex (dec) { return dec.toString(16).padStart(2, "0") }
8 function generateId (len) {
9 var arr = new Uint8Array((len || 40) / 2)
10 window.crypto.getRandomValues(arr)
11 return Array.from(arr, dec2hex).join('')
12 }
13
14 // Populate variants dropdown list
15 let dropdown = $.getElementById("selectVariant");
16 dropdown[0] = new Option("? ? ?", "_random", true, true);
17 dropdown[0].title = "Random variant";
18 for (let i = 0; i < variants.length; i++) {
19 let newOption = new Option(
20 variants[i].disp || variants[i].name, variants[i].name, false, false);
21 newOption.title = variants[i].desc;
22 dropdown[dropdown.length] = newOption;
23 }
24
25 // Ensure that I have a socket ID and a name
26 if (!localStorage.getItem("sid"))
27 localStorage.setItem("sid", generateId(8));
28 if (!localStorage.getItem("name"))
29 localStorage.setItem("name", "@non" + generateId(4));
30 const sid = localStorage.getItem("sid");
31 $.getElementById("myName").value = localStorage.getItem("name");
32
33 // "Material" input field name
34 let inputName = document.getElementById("myName");
35 let formField = document.getElementById("ng-name");
36 const setActive = (active) => {
37 if (active) formField.classList.add("form-field--is-active");
38 else {
39 formField.classList.remove("form-field--is-active");
40 inputName.value === "" ?
41 formField.classList.remove("form-field--is-filled") :
42 formField.classList.add("form-field--is-filled");
43 }
44 };
45 inputName.onblur = () => setActive(false);
46 inputName.onfocus = () => setActive(true);
47 inputName.focus();
48
49 /////////
50 // Utils
51
52 function setName() {
53 localStorage.setItem("name", $.getElementById("myName").value);
54 }
55
56 // Turn a "tab" on, and "close" all others
57 function toggleVisible(element) {
58 for (elt of document.querySelectorAll('main > div')) {
59 if (elt.id != element) elt.style.display = "none";
60 else elt.style.display = "block";
61 }
62 if (element == "boardContainer") {
63 // Avoid smartphone scrolling effects (TODO?)
64 document.querySelector("html").style.overflow = "hidden";
65 document.body.style.overflow = "hidden";
66 }
67 else {
68 document.querySelector("html").style.overflow = "visible";
69 document.body.style.overflow = "visible";
70 if (element == "newGame") {
71 // Workaround "superposed texts" effect
72 inputName.focus();
73 inputName.blur();
74 }
75 }
76 }
77
78 let seek_vname;
79 function seekGame() {
80 seek_vname = $.getElementById("selectVariant").value;
81 send("seekgame", {vname: seek_vname, name: localStorage.getItem("name")});
82 toggleVisible("pendingSeek");
83 }
84 function cancelSeek() {
85 send("cancelseek", {vname: seek_vname});
86 toggleVisible("newGame");
87 }
88
89 function sendRematch() {
90 send("rematch", { gid: gid });
91 toggleVisible("pendingRematch");
92 }
93 function cancelRematch() {
94 send("norematch", { gid: gid });
95 toggleVisible("newGame");
96 }
97
98 // Play with a friend (or not ^^)
99 function showNewGameForm() {
100 const vname = $.getElementById("selectVariant").value;
101 if (vname == "_random") alert("Select a variant first");
102 else {
103 $.getElementById("gameLink").innerHTML = "";
104 $.getElementById("selectColor").selectedIndex = 0;
105 toggleVisible("newGameForm");
106 import(`/variants/${vname}/class.js`).then(module => {
107 window.V = module.default;
108 prepareOptions();
109 });
110 }
111 }
112 function backToNormalSeek() { toggleVisible("newGame"); }
113
114 function toggleStyle(e, word) {
115 options[word] = !options[word];
116 e.target.classList.toggle("highlight-word");
117 }
118
119 let options;
120 function prepareOptions() {
121 options = {};
122 let optHtml = V.Options.select.map(select => { return `
123 <div class="option-select">
124 <label for="var_${select.variable}">${select.label}</label>
125 <div class="select">
126 <select id="var_${select.variable}" data-numeric="1">` +
127 select.options.map(option => { return `
128 <option
129 value="${option.value}"
130 ${option.value == select.defaut ? " selected" : ""}
131 >
132 ${option.label}
133 </option>`;
134 }).join("") + `
135 </select>
136 <span class="focus"></span>
137 </div>
138 </div>`;
139 }).join("");
140 optHtml += V.Options.check.map(check => {
141 return `
142 <div class="option-check">
143 <label class="checkbox">
144 <input id="var_${check.variable}"
145 type="checkbox"${check.defaut ? " checked" : ""}/>
146 <span class="spacer"></span>
147 <span>${check.label}</span>
148 </label>
149 </div>`;
150 }).join("");
151 if (V.Options.styles.length >= 1) {
152 optHtml += '<div class="words">';
153 let i = 0;
154 const stylesLength = V.Options.styles.length;
155 while (i < stylesLength) {
156 optHtml += '<div class="row">';
157 for (let j=i; j<i+4; j++) {
158 if (j == stylesLength) break;
159 const style = V.Options.styles[j];
160 optHtml +=
161 `<span onClick="toggleStyle(event, '${style}')">${style}</span>`;
162 }
163 optHtml += "</div>";
164 i += 4;
165 }
166 optHtml += "</div>";
167 }
168 $.getElementById("gameOptions").innerHTML = optHtml;
169 }
170
171 function getGameLink() {
172 const vname = $.getElementById("selectVariant").value;
173 const color = $.getElementById("selectColor").value;
174 for (const select of $.querySelectorAll("#gameOptions select")) {
175 let value = select.value;
176 if (select.attributes["data-numeric"]) value = parseInt(value, 10);
177 if (value) options[ select.id.split("_")[1] ] = value;
178 }
179 for (const check of $.querySelectorAll("#gameOptions input")) {
180 if (check.checked) options[ check.id.split("_")[1] ] = check.checked;
181 }
182 send("creategame", {
183 vname: vname,
184 player: { sid: sid, name: localStorage.getItem("name"), color: color },
185 options: options
186 });
187 }
188
189 const fillGameInfos = (gameInfos, oppIndex) => {
190 fetch(`/variants/${gameInfos.vname}/rules.html`)
191 .then(res => res.text())
192 .then(txt => {
193 let htmlContent = `
194 <div class="players-info">
195 <p>
196 <span class="bold">${gameInfos.vdisp}</span>
197 <span>vs. ${gameInfos.players[oppIndex].name}</span>
198 </p>
199 </div>`;
200 const options = Object.entries(gameInfos.options);
201 if (options.length > 0) {
202 htmlContent += '<div class="options-info">';
203 let i = 0;
204 while (i < options.length) {
205 htmlContent += '<div class="row">';
206 for (let j=i; j<i+4; j++) {
207 if (j == options.length) break;
208 const opt = options[j];
209 htmlContent +=
210 '<span class="option">' +
211 (opt[1] === true ? opt[0] : `${opt[0]}:${opt[1]}`) + " " +
212 '</span>';
213 }
214 htmlContent += "</div>";
215 i += 4;
216 }
217 htmlContent += "</div>";
218 }
219 htmlContent += `
220 <div class="rules">${txt}</div>
221 <div class="btn-wrap">
222 <button onClick="toggleGameInfos()">Back to game</button>
223 </div>`;
224 $.getElementById("gameInfos").innerHTML = htmlContent;
225 });
226 };
227
228 ////////////////
229 // Communication
230
231 let socket, gid, attempt = 0;
232 const autoReconnectDelay = () => {
233 return [100, 200, 500, 1000, 3000, 10000, 30000][Math.min(attempt, 6)];
234 };
235
236 function copyClipboard(msg) { navigator.clipboard.writeText(msg); }
237 function getWhatsApp(msg) {
238 return `https://api.whatsapp.com/send?text=${encodeURIComponent(msg)}`;
239 }
240
241 const tryResumeGame = () => {
242 attempt = 0;
243 // If a game is found, resume it:
244 if (localStorage.getItem("gid")) {
245 gid = localStorage.getItem("gid");
246 send("getgame", { gid: gid });
247 }
248 else {
249 // If URL indicates "play with a friend", start game:
250 const hashIdx = document.URL.indexOf('#');
251 if (hashIdx >= 0) {
252 const urlParts = $.URL.split('#');
253 gid = urlParts[1];
254 send("joingame", { gid: gid, name: localStorage.getItem("name") });
255 localStorage.setItem("gid", gid);
256 history.replaceState(null, '', urlParts[0]);
257 }
258 }
259 };
260
261 const messageCenter = (msg) => {
262 const obj = JSON.parse(msg.data);
263 switch (obj.code) {
264 // Start new game:
265 case "gamestart": {
266 if (document.hidden) notifyMe("game");
267 gid = obj.gid;
268 initializeGame(obj);
269 break;
270 }
271 // Game vs. friend just created on server: share link now
272 case "gamecreated": {
273 const link = `${Params.http_server}/#${obj.gid}`;
274 $.getElementById("gameLink").innerHTML = `
275 <p>
276 <a href="${getWhatsApp(link)}">WhatsApp</a>
277 /
278 <span onClick='copyClipboard("${link}")'>ToClipboard</span>
279 </p>
280 <p>${link}</p>
281 `;
282 break;
283 }
284 // Game vs. friend joined after 1 minute (try again!)
285 case "jointoolate":
286 alert("Game no longer available");
287 break;
288 // Get infos of a running game (already launched)
289 case "gameinfo":
290 initializeGame(obj);
291 break;
292 // Tried to resume a game which is now gone:
293 case "nogame":
294 localStorage.removeItem("gid");
295 break;
296 // Receive opponent's move:
297 case "newmove":
298 if (document.hidden) notifyMe("move");
299 vr.playReceivedMove(obj.moves, () => {
300 if (vr.getCurrentScore(obj.moves[obj.moves.length-1]) != "*") {
301 localStorage.removeItem("gid");
302 setTimeout( () => toggleVisible("gameStopped"), 2000 );
303 }
304 else toggleTurnIndicator(true);
305 });
306 break;
307 // Opponent stopped game (draw, abort, resign...)
308 case "gameover":
309 toggleVisible("gameStopped");
310 localStorage.removeItem("gid");
311 break;
312 // Opponent cancelled rematch:
313 case "closerematch":
314 toggleVisible("newGame");
315 break;
316 }
317 };
318
319 const handleError = (err) => {
320 if (err.code === 'ECONNREFUSED') {
321 removeAllListeners();
322 alert("Server refused connection. Please reload page later");
323 }
324 socket.close();
325 };
326
327 const handleClose = () => {
328 setTimeout(() => {
329 removeAllListeners();
330 connectToWSS();
331 }, autoReconnectDelay());
332 };
333
334 const removeAllListeners = () => {
335 socket.removeEventListener("open", tryResumeGame);
336 socket.removeEventListener("message", messageCenter);
337 socket.removeEventListener("error", handleError);
338 socket.removeEventListener("close", handleClose);
339 };
340
341 const connectToWSS = () => {
342 socket =
343 new WebSocket(`${Params.socket_server}${Params.socket_path}?sid=${sid}`);
344 socket.addEventListener("open", tryResumeGame);
345 socket.addEventListener("message", messageCenter);
346 socket.addEventListener("error", handleError);
347 socket.addEventListener("close", handleClose);
348 attempt++;
349 };
350 connectToWSS();
351
352 const send = (code, data) => {
353 socket.send(JSON.stringify(Object.assign({code: code}, data)));
354 };
355
356 ///////////
357 // Playing
358
359 function toggleTurnIndicator(myTurn) {
360 let indicator = $.getElementById("chessboard");
361 if (myTurn) indicator.style.outline = "thick solid green";
362 else indicator.style.outline = "thick solid lightgrey";
363 }
364
365 function notifyMe(code) {
366 const doNotify = () => {
367 // NOTE: empty body (TODO?)
368 new Notification("New " + code, { vibrate: [200, 100, 200] });
369 new Audio("/assets/new_" + code + ".mp3").play();
370 }
371 if (Notification.permission === 'granted') doNotify();
372 else if (Notification.permission !== 'denied') {
373 Notification.requestPermission().then(permission => {
374 if (permission === 'granted') doNotify();
375 });
376 }
377 }
378
379 let curMoves = [];
380 const afterPlay = (move) => { //pack into one moves array, then send
381 curMoves.push({
382 appear: move.appear,
383 vanish: move.vanish,
384 start: move.start,
385 end: move.end
386 });
387 if (vr.turn != playerColor) {
388 toggleTurnIndicator(false);
389 send("newmove", { gid: gid, moves: curMoves, fen: vr.getFen() });
390 curMoves = [];
391 const result = vr.getCurrentScore(move);
392 if (result != "*") {
393 setTimeout( () => {
394 toggleVisible("gameStopped");
395 send("gameover", { gid: gid });
396 }, 2000);
397 }
398 }
399 };
400
401 // Avoid loading twice the same stylesheet:
402 const conditionalLoadCSS = (vname) => {
403 const allIds = [].slice.call($.styleSheets).map(s => s.id);
404 const newId = vname + "_css";
405 if (!allIds.includes(newId)) {
406 $.getElementsByTagName("head")[0].insertAdjacentHTML(
407 "beforeend",
408 `<link id="${newId}" rel="stylesheet"
409 href="/variants/${vname}/style.css"/>`);
410 }
411 };
412
413 let vr, playerColor;
414 function initializeGame(obj) {
415 const options = obj.options || {};
416 import(`/variants/${obj.vname}/class.js`).then(module => {
417 window.V = module.default;
418 conditionalLoadCSS(obj.vname);
419 playerColor = (sid == obj.players[0].sid ? "w" : "b");
420 // Init + remove potential extra DOM elements from a previous game:
421 document.getElementById("boardContainer").innerHTML = `
422 <div id="upLeftInfos"
423 onClick="toggleGameInfos()">
424 <svg version="1.1"
425 viewBox="0.5 0.5 100 100">
426 <g>
427 <path d="M50.5,0.5c-27.614,0-50,22.386-50,50c0,27.614,22.386,50,50,50s50-22.386,50-50C100.5,22.886,78.114,0.5,50.5,0.5z M60.5,85.5h-20v-40h20V85.5z M50.5,35.5c-5.523,0-10-4.477-10-10s4.477-10,10-10c5.522,0,10,4.477,10,10S56.022,35.5,50.5,35.5z"/>
428 </g>
429 </svg>
430 </div>
431 <div id="upRightStop"
432 onClick="confirmStopGame()">
433 <svg version="1.1"
434 viewBox="0 0 533.333 533.333">
435 <g>
436 <path d="M528.468,428.468c-0.002-0.002-0.004-0.004-0.006-0.005L366.667,266.666l161.795-161.797 c0.002-0.002,0.004-0.003,0.006-0.005c1.741-1.742,3.001-3.778,3.809-5.946c2.211-5.925,0.95-12.855-3.814-17.62l-76.431-76.43 c-4.765-4.763-11.694-6.024-17.619-3.812c-2.167,0.807-4.203,2.066-5.946,3.807c0,0.002-0.002,0.003-0.005,0.005L266.667,166.666 L104.87,4.869c-0.002-0.002-0.003-0.003-0.005-0.005c-1.743-1.74-3.778-3-5.945-3.807C92.993-1.156,86.065,0.105,81.3,4.869 L4.869,81.3c-4.764,4.765-6.024,11.694-3.813,17.619c0.808,2.167,2.067,4.205,3.808,5.946c0.002,0.001,0.003,0.003,0.005,0.005 l161.797,161.796L4.869,428.464c-0.001,0.002-0.003,0.003-0.004,0.005c-1.741,1.742-3,3.778-3.809,5.945 c-2.212,5.924-0.951,12.854,3.813,17.619L81.3,528.464c4.766,4.765,11.694,6.025,17.62,3.813c2.167-0.809,4.203-2.068,5.946-3.809 c0.001-0.002,0.003-0.003,0.005-0.005l161.796-161.797l161.795,161.797c0.003,0.001,0.005,0.003,0.007,0.004 c1.743,1.741,3.778,3.001,5.944,3.81c5.927,2.212,12.856,0.951,17.619-3.813l76.43-76.432c4.766-4.765,6.026-11.696,3.815-17.62 C531.469,432.246,530.209,430.21,528.468,428.468z"/>
437 </g>
438 </svg>
439 </div>
440 <div class="resizeable" id="chessboard"></div>`;
441 vr = new V({
442 seed: obj.seed, //may be null if FEN already exists (running game)
443 fen: obj.fen,
444 element: "chessboard",
445 color: playerColor,
446 afterPlay: afterPlay,
447 options: options
448 });
449 if (!obj.fen) {
450 // Game creation
451 if (playerColor == "w") send("setfen", {gid: obj.gid, fen: vr.getFen()});
452 localStorage.setItem("gid", obj.gid);
453 }
454 const select = $.getElementById("selectVariant");
455 obj.vdisp = "";
456 for (let i=0; i<select.options.length; i++) {
457 if (select.options[i].value == obj.vname) {
458 obj.vdisp = select.options[i].text;
459 break;
460 }
461 }
462 fillGameInfos(obj, playerColor == "w" ? 1 : 0);
463 if (obj.randvar) toggleVisible("gameInfos");
464 else toggleVisible("boardContainer");
465 toggleTurnIndicator(vr.turn == playerColor);
466 });
467 }
468
469 function confirmStopGame() {
470 if (confirm("Stop game?")) {
471 send("gameover", { gid: gid, relay: true });
472 localStorage.removeItem("gid");
473 toggleVisible("gameStopped");
474 }
475 }
476
477 function toggleGameInfos() {
478 if ($.getElementById("gameInfos").style.display == "none")
479 toggleVisible("gameInfos");
480 else {
481 toggleVisible("boardContainer");
482 // Quickfix for the "vanished piece" bug (move played while on game infos)
483 vr.setupPieces(); //TODO: understand better
484 }
485 }
486
487 $.body.addEventListener("keydown", (e) => {
488 if (!localStorage.getItem("gid")) return;
489 if (e.keyCode == 27) confirmStopGame();
490 else if (e.keyCode == 32) {
491 e.preventDefault();
492 toggleGameInfos();
493 }
494 });