Add Refusal
[xogo.git] / app.js
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1let $ = document; //shortcut
2
3///////////////////
4// Initialisations
5
6// https://stackoverflow.com/a/27747377/12660887
41534b92 7function generateId (len) {
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8 const dec2hex = (dec) => dec.toString(16).padStart(2, "0");
9 let arr = new Uint8Array(len / 2); //len/2 because 2 chars per hex value
10 window.crypto.getRandomValues(arr); //fill with random integers
11 return Array.from(arr, dec2hex).join('');
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12}
13
14// Populate variants dropdown list
15let dropdown = $.getElementById("selectVariant");
16dropdown[0] = new Option("? ? ?", "_random", true, true);
17dropdown[0].title = "Random variant";
18for (let i = 0; i < variants.length; i++) {
19 let newOption = new Option(
20 variants[i].disp || variants[i].name, variants[i].name, false, false);
21 newOption.title = variants[i].desc;
22 dropdown[dropdown.length] = newOption;
23}
24
25// Ensure that I have a socket ID and a name
26if (!localStorage.getItem("sid"))
27 localStorage.setItem("sid", generateId(8));
28if (!localStorage.getItem("name"))
29 localStorage.setItem("name", "@non" + generateId(4));
30const sid = localStorage.getItem("sid");
31$.getElementById("myName").value = localStorage.getItem("name");
32
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33// "Material" input field name
34let inputName = document.getElementById("myName");
35let formField = document.getElementById("ng-name");
36const setActive = (active) => {
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37 if (active)
38 formField.classList.add("form-field--is-active");
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39 else {
40 formField.classList.remove("form-field--is-active");
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41 inputName.value == ''
42 ? formField.classList.remove("form-field--is-filled")
43 : formField.classList.add("form-field--is-filled");
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44 }
45};
f46a68b8 46setActive(true);
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47inputName.onblur = () => setActive(false);
48inputName.onfocus = () => setActive(true);
86f3c2cd 49
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50/////////
51// Utils
52
53function setName() {
f46a68b8 54 // 'onChange' event on name input text field [HTML]
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55 localStorage.setItem("name", $.getElementById("myName").value);
56}
57
58// Turn a "tab" on, and "close" all others
59function toggleVisible(element) {
f46a68b8 60 for (elt of document.querySelectorAll("main > div")) {
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61 if (elt.id != element)
62 elt.style.display = "none";
63 else
64 elt.style.display = "block";
41534b92 65 }
a77150a1 66 if (element == "boardContainer") {
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67 // Avoid smartphone scrolling effects (TODO?)
68 document.querySelector("html").style.overflow = "hidden";
69 document.body.style.overflow = "hidden";
70 }
71 else {
72 document.querySelector("html").style.overflow = "visible";
73 document.body.style.overflow = "visible";
f46a68b8 74 // Workaround "superposed texts" effect:
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75 if (element == "newGame")
76 setActive(false);
86f3c2cd 77 }
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78}
79
80let seek_vname;
81function seekGame() {
82 seek_vname = $.getElementById("selectVariant").value;
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83 if (send("seekgame",
84 {vname: seek_vname, name: localStorage.getItem("name")})
85 ) {
86 toggleVisible("pendingSeek");
87 }
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88}
89function cancelSeek() {
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90 if (send("cancelseek", {vname: seek_vname}))
91 toggleVisible("newGame");
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92}
93
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94function sendRematch(random) {
95 if (send("rematch", {gid: gid, random: !!random}))
96 toggleVisible("pendingRematch");
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97}
98function cancelRematch() {
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99 if (send("norematch", {gid: gid}))
100 toggleVisible("newGame");
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101}
102
103// Play with a friend (or not ^^)
104function showNewGameForm() {
105 const vname = $.getElementById("selectVariant").value;
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106 if (vname == "_random")
107 alert("Select a variant first");
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108 else {
109 $.getElementById("gameLink").innerHTML = "";
110 $.getElementById("selectColor").selectedIndex = 0;
111 toggleVisible("newGameForm");
112 import(`/variants/${vname}/class.js`).then(module => {
cc2c7183 113 window.V = module.default;
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114 for (const [k, v] of Object.entries(V.Aliases))
115 window[k] = v;
cc2c7183 116 prepareOptions();
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117 });
118 }
119}
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120function backToNormalSeek() {
121 toggleVisible("newGame");
122}
41534b92 123
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124function toggleStyle(event, obj) {
125 const word = obj.innerHTML;
41534b92 126 options[word] = !options[word];
f46a68b8 127 event.target.classList.toggle("highlight-word");
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128}
129
130let options;
cc2c7183 131function prepareOptions() {
41534b92 132 options = {};
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133 let optHtml = "";
134 if (V.Options.select) {
135 optHtml += V.Options.select.map(select => { return `
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136 <div class="option-select">
137 <label for="var_${select.variable}">${select.label}</label>
138 <div class="select">
535c464b 139 <select id="var_${select.variable}">` +
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140 select.options.map(option => { return `
141 <option
142 value="${option.value}"
143 ${option.value == select.defaut ? " selected" : ""}
144 >
145 ${option.label}
146 </option>`;
147 }).join("") + `
148 </select>
149 <span class="focus"></span>
150 </div>
151 </div>`;
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152 }).join("");
153 }
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154 if (V.Options.input) {
155 optHtml += V.Options.input.map(input => { return `
156 <div class="option-input">
157 <label class="input">
158 <input id="var_${input.variable}"
159 type="${input.type}"
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160 ${input.type == "checkbox" && input.defaut
161 ? "checked"
162 : 'value="' + input.defaut + '"'}
163 />
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164 <span class="spacer"></span>
165 <span>${input.label}</span>
166 </label>
167 </div>`;
168 }).join("");
169 }
170 if (V.Options.styles) {
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171 optHtml += '<div class="words">';
172 let i = 0;
cc2c7183 173 const stylesLength = V.Options.styles.length;
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174 while (i < stylesLength) {
175 optHtml += '<div class="row">';
176 for (let j=i; j<i+4; j++) {
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177 if (j == stylesLength)
178 break;
cc2c7183 179 const style = V.Options.styles[j];
f46a68b8 180 optHtml += `<span onClick="toggleStyle(event, this)">${style}</span>`;
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181 }
182 optHtml += "</div>";
183 i += 4;
41534b92 184 }
86f3c2cd 185 optHtml += "</div>";
41534b92 186 }
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187 $.getElementById("gameOptions").innerHTML = optHtml;
188}
189
190function getGameLink() {
191 const vname = $.getElementById("selectVariant").value;
192 const color = $.getElementById("selectColor").value;
86f3c2cd 193 for (const select of $.querySelectorAll("#gameOptions select")) {
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194 let value = parseInt(select.value, 10);
195 if (isNaN(value)) //not an integer
196 value = select.value;
535c464b 197 options[ select.id.split("_")[1] ] = value;
cc2c7183 198 }
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199 for (const input of $.querySelectorAll("#gameOptions input")) {
200 const variable = input.id.split("_")[1];
201 if (input.type == "number")
202 options[variable] = parseInt(input.value, 10); //TODO: real numbers?
203 else if (input.type == "checkbox")
204 options[variable] = input.checked;
41534b92 205 }
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206 send("creategame", {
207 vname: vname,
f46a68b8 208 player: {sid: sid, name: localStorage.getItem("name"), color: color},
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209 options: options
210 });
211}
212
f46a68b8 213function fillGameInfos(gameInfos, oppIndex) {
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214 fetch(`/variants/${gameInfos.vname}/rules.html`)
215 .then(res => res.text())
216 .then(txt => {
217 let htmlContent = `
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218 <div class="players-info">
219 <p>
220 <span class="bold">${gameInfos.vdisp}</span>
221 <span>vs. ${gameInfos.players[oppIndex].name}</span>
222 </p>
223 </div>`;
224 const options = Object.entries(gameInfos.options);
225 if (options.length > 0) {
226 htmlContent += '<div class="options-info">';
227 let i = 0;
228 while (i < options.length) {
229 htmlContent += '<div class="row">';
230 for (let j=i; j<i+4; j++) {
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231 if (j == options.length)
232 break;
86f3c2cd 233 const opt = options[j];
f5435757 234 if (!opt[1]) //includes 0 and false (lighter display)
b4ae3ff6 235 continue;
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236 htmlContent +=
237 '<span class="option">' +
238 (opt[1] === true ? opt[0] : `${opt[0]}:${opt[1]}`) + " " +
f46a68b8 239 "</span>";
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240 }
241 htmlContent += "</div>";
242 i += 4;
243 }
244 htmlContent += "</div>";
245 }
41534b92 246 htmlContent += `
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247 <div class="rules">${txt}</div>
248 <div class="btn-wrap">
249 <button onClick="toggleGameInfos()">Back to game</button>
250 </div>`;
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251 $.getElementById("gameInfos").innerHTML = htmlContent;
252 });
f46a68b8 253}
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254
255////////////////
256// Communication
257
f46a68b8 258let socket, gid, recoAttempt = 0;
41534b92 259const autoReconnectDelay = () => {
f46a68b8 260 return [100, 200, 500, 1000, 3000, 10000, 30000][Math.min(recoAttempt, 6)];
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261};
262
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263function send(code, data, opts) {
264 opts = opts || {};
265 const trySend = () => {
266 if (socket.readyState == 1) {
267 socket.send(JSON.stringify(Object.assign({code: code}, data)));
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268 if (opts.success)
269 opts.success();
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270 return true;
271 }
272 return false;
273 };
274 const firstTry = trySend();
275 if (!firstTry) {
276 if (opts.retry) {
277 // Retry for a few seconds (sending move)
278 let sendAttempt = 1;
279 const retryLoop = setInterval(
280 () => {
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281 if (trySend() || ++sendAttempt >= 3)
282 clearInterval(retryLoop);
283 if (sendAttempt >= 3 && opts.error)
284 opts.error();
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285 },
286 1000
287 );
288 }
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289 else if (opts.error)
290 opts.error();
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291 }
292 return firstTry;
293}
294
295function copyClipboard(msg) {
296 navigator.clipboard.writeText(msg);
297}
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298function getWhatsApp(msg) {
299 return `https://api.whatsapp.com/send?text=${encodeURIComponent(msg)}`;
300}
301
302const tryResumeGame = () => {
f46a68b8 303 recoAttempt = 0;
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304 // If a game is found, resume it:
305 if (localStorage.getItem("gid")) {
306 gid = localStorage.getItem("gid");
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307 send("getgame",
308 {gid: gid},
309 {
310 retry: true,
311 error: () => alert("Cannot load game: no connection")
312 });
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313 }
314 else {
315 // If URL indicates "play with a friend", start game:
316 const hashIdx = document.URL.indexOf('#');
317 if (hashIdx >= 0) {
318 const urlParts = $.URL.split('#');
319 gid = urlParts[1];
41534b92 320 localStorage.setItem("gid", gid);
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321 history.replaceState(null, '', urlParts[0]); //hide game ID
322 send("joingame",
323 {gid: gid, name: localStorage.getItem("name")},
324 {
325 retry: true,
326 error: () => alert("Cannot load game: no connection")
327 });
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328 }
329 }
330};
331
332const messageCenter = (msg) => {
333 const obj = JSON.parse(msg.data);
334 switch (obj.code) {
335 // Start new game:
336 case "gamestart": {
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337 if (document.hidden)
338 notifyMe("game");
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339 gid = obj.gid;
340 initializeGame(obj);
341 break;
342 }
343 // Game vs. friend just created on server: share link now
344 case "gamecreated": {
345 const link = `${Params.http_server}/#${obj.gid}`;
346 $.getElementById("gameLink").innerHTML = `
347 <p>
348 <a href="${getWhatsApp(link)}">WhatsApp</a>
349 /
f46a68b8 350 <span onClick="copyClipboard('${link}')">ToClipboard</span>
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351 </p>
352 <p>${link}</p>
353 `;
354 break;
355 }
356 // Game vs. friend joined after 1 minute (try again!)
357 case "jointoolate":
358 alert("Game no longer available");
359 break;
360 // Get infos of a running game (already launched)
361 case "gameinfo":
362 initializeGame(obj);
363 break;
364 // Tried to resume a game which is now gone:
365 case "nogame":
366 localStorage.removeItem("gid");
367 break;
368 // Receive opponent's move:
369 case "newmove":
f46a68b8 370 // Basic check: was it really opponent's turn?
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371 if (vr.turn == playerColor)
372 break;
373 if (document.hidden)
374 notifyMe("move");
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375 vr.playReceivedMove(obj.moves, () => {
376 if (vr.getCurrentScore(obj.moves[obj.moves.length-1]) != "*") {
377 localStorage.removeItem("gid");
378 setTimeout( () => toggleVisible("gameStopped"), 2000 );
379 }
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380 else
381 toggleTurnIndicator(true);
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382 });
383 break;
384 // Opponent stopped game (draw, abort, resign...)
385 case "gameover":
386 toggleVisible("gameStopped");
387 localStorage.removeItem("gid");
388 break;
389 // Opponent cancelled rematch:
390 case "closerematch":
391 toggleVisible("newGame");
392 break;
393 }
394};
395
396const handleError = (err) => {
f46a68b8 397 if (err.code === "ECONNREFUSED") {
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398 removeAllListeners();
399 alert("Server refused connection. Please reload page later");
400 }
401 socket.close();
402};
403
404const handleClose = () => {
405 setTimeout(() => {
406 removeAllListeners();
407 connectToWSS();
408 }, autoReconnectDelay());
409};
410
f46a68b8 411function removeAllListeners() {
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412 socket.removeEventListener("open", tryResumeGame);
413 socket.removeEventListener("message", messageCenter);
414 socket.removeEventListener("error", handleError);
415 socket.removeEventListener("close", handleClose);
f46a68b8 416}
41534b92 417
f46a68b8 418function connectToWSS() {
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419 socket =
420 new WebSocket(`${Params.socket_server}${Params.socket_path}?sid=${sid}`);
421 socket.addEventListener("open", tryResumeGame);
422 socket.addEventListener("message", messageCenter);
423 socket.addEventListener("error", handleError);
424 socket.addEventListener("close", handleClose);
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425 recoAttempt++;
426}
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427connectToWSS();
428
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429///////////
430// Playing
431
432function toggleTurnIndicator(myTurn) {
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433 let indicator =
434 $.getElementById("boardContainer").querySelector(".chessboard");
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435 if (myTurn)
436 indicator.style.outline = "thick solid green";
437 else
438 indicator.style.outline = "thick solid lightgrey";
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439}
440
441function notifyMe(code) {
442 const doNotify = () => {
443 // NOTE: empty body (TODO?)
444 new Notification("New " + code, { vibrate: [200, 100, 200] });
445 new Audio("/assets/new_" + code + ".mp3").play();
446 }
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447 if (Notification.permission === "granted")
448 doNotify();
f46a68b8 449 else if (Notification.permission !== "denied") {
016306e3 450 Notification.requestPermission().then(permission => {
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451 if (permission === "granted")
452 doNotify();
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453 });
454 }
455}
456
8a9f61ce 457let curMoves = [],
f46a68b8 458 lastFen;
8f57fbf2 459const afterPlay = (move_s) => {
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460 const callbackAfterSend = () => {
461 curMoves = [];
8f228ec8 462 const result = vr.getCurrentScore(move_s);
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463 if (result != "*") {
464 setTimeout(() => {
465 toggleVisible("gameStopped");
466 send("gameover", {gid: gid});
467 }, 2000);
468 }
469 };
8a9f61ce 470 // Pack into one moves array, then send
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471 if (Array.isArray(move_s))
472 // Array of simple moves (e.g. Chakart)
473 Array.prototype.push.apply(curMoves, move_s);
474 else
475 // Usual case
476 curMoves.push(move_s);
21e8e712 477 if (vr.turn != playerColor) {
41534b92 478 toggleTurnIndicator(false);
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479 send("newmove",
480 {gid: gid, moves: curMoves, fen: vr.getFen()},
481 {
482 retry: true,
483 success: callbackAfterSend,
484 error: () => alert("Move not sent: reload page")
485 });
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486 }
487};
488
21e8e712 489let vr, playerColor;
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490function initializeGame(obj) {
491 const options = obj.options || {};
492 import(`/variants/${obj.vname}/class.js`).then(module => {
cc2c7183 493 window.V = module.default;
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494 for (const [k, v] of Object.entries(V.Aliases))
495 window[k] = v;
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496 // Load CSS. Avoid loading twice the same stylesheet:
497 const allIds = [].slice.call($.styleSheets).map(s => s.id);
498 const newId = obj.vname + "_css";
499 if (!allIds.includes(newId)) {
500 $.getElementsByTagName("head")[0].insertAdjacentHTML(
501 "beforeend",
502 `<link id="${newId}" rel="stylesheet"
503 href="/variants/${obj.vname}/style.css"/>`);
504 }
21e8e712 505 playerColor = (sid == obj.players[0].sid ? "w" : "b");
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506 // Init + remove potential extra DOM elements from a previous game:
507 document.getElementById("boardContainer").innerHTML = `
508 <div id="upLeftInfos"
509 onClick="toggleGameInfos()">
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510 <svg version="1.1"
511 viewBox="0.5 0.5 100 100">
512 <g>
513 <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"/>
514 </g>
515 </svg>
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516 </div>
517 <div id="upRightStop"
518 onClick="confirmStopGame()">
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519 <svg version="1.1"
520 viewBox="0 0 533.333 533.333">
521 <g>
522 <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"/>
523 </g>
524 </svg>
41534b92 525 </div>
c4e9bb92 526 <div class="chessboard"></div>`;
cc2c7183 527 vr = new V({
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528 seed: obj.seed, //may be null if FEN already exists (running game)
529 fen: obj.fen,
3c61449b 530 element: "boardContainer",
21e8e712 531 color: playerColor,
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532 afterPlay: afterPlay,
533 options: options
534 });
535 if (!obj.fen) {
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536 // Game creation: both players set FEN, in case of one is offline
537 send("setfen", {gid: obj.gid, fen: vr.getFen()});
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538 localStorage.setItem("gid", obj.gid);
539 }
540 const select = $.getElementById("selectVariant");
541 obj.vdisp = "";
542 for (let i=0; i<select.options.length; i++) {
543 if (select.options[i].value == obj.vname) {
544 obj.vdisp = select.options[i].text;
545 break;
546 }
547 }
21e8e712 548 fillGameInfos(obj, playerColor == "w" ? 1 : 0);
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549 if (obj.randvar)
550 toggleVisible("gameInfos");
551 else
552 toggleVisible("boardContainer");
21e8e712 553 toggleTurnIndicator(vr.turn == playerColor);
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554 });
555}
556
557function confirmStopGame() {
f46a68b8 558 if (confirm("Stop game?") && send("gameover", {gid: gid, relay: true})) {
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559 localStorage.removeItem("gid");
560 toggleVisible("gameStopped");
561 }
562}
563
564function toggleGameInfos() {
565 if ($.getElementById("gameInfos").style.display == "none")
566 toggleVisible("gameInfos");
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567 else
568 toggleVisible("boardContainer");
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569}
570
571$.body.addEventListener("keydown", (e) => {
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572 if (!localStorage.getItem("gid"))
573 return;
574 if (e.keyCode == 27)
575 confirmStopGame();
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576 else if (e.keyCode == 32) {
577 e.preventDefault();
578 toggleGameInfos();
579 }
580});