Merge pull request lichess-org#9490 from FlyOrBoom/master

Add WakeLock

ui/common/package.json

@@ -22,6 +22,7 @@
   },
   "devDependencies": {
     "@types/cash": "8.0.0",
+    "@types/dom-screen-wake-lock": "1.0.0",
     "@types/lichess": "2.0.0",
     "typescript": "^4.3.4"
   }

ui/common/src/wakeLock.ts

@@ -0,0 +1,31 @@
+import '@types/dom-screen-wake-lock';
+
+let wakeLock: WakeLockSentinel | null = null;
+
+export const request = () => {
+  if ('wakeLock' in navigator) {
+    navigator.wakeLock
+      .request('screen')
+      .then(sentinel => {
+        wakeLock = sentinel;
+      })
+      .catch((error: Error) => {
+        console.error('wakeLock - request failed: ' + error.message);
+      });
+  }
+};
+
+export const release = () =>
+  wakeLock
+    ?.release()
+    .then(() => {
+      wakeLock = null;
+    })
+    .catch((error: Error) => {
+      console.error('wakeLock - release failed: ' + error.message);
+    });
+
+// re-request wakeLock if user switches tabs
+document.addEventListener('visibilitychange', () => {
+  if (wakeLock && document.visibilityState === 'visible') request();
+});

ui/round/src/ctrl.ts

@@ -27,6 +27,7 @@ import * as renderUser from './view/user';
 import * as cevalSub from './cevalSub';
 import * as keyboard from './keyboard';
 import { PromotionCtrl, promote } from 'chess/promotion';
+import * as wakeLock from 'common/wakeLock';
 
 import {
   RoundOpts,
@@ -554,6 +555,7 @@ export default class RoundController {
     this.autoScroll();
     this.onChange();
     if (d.tv) setTimeout(lichess.reload, 10000);
+    wakeLock.release();
     speech.status(this);
   };
 
@@ -780,6 +782,8 @@ export default class RoundController {
 
       speech.setup(this);
 
+      wakeLock.request();
+
       this.onChange();
     }, 800);
   };

yarn.lock

@@ -171,6 +171,11 @@
   resolved "https://registry.yarnpkg.com/@types/debounce-promise/-/debounce-promise-3.1.3.tgz#dd0d6b96ee61da0dd4c413e3ea03a425ffa36b3f"
   integrity sha512-mjcCf//DAUQ6YLQMhqYJAv/+a4BsE1GQFmy1el5K62wLJJmQwGi3TsnshhOFynPpuBF9Gh2Vvb+5ImPi47KaZw==
 
+"@types/[email protected]":
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/@types/dom-screen-wake-lock/-/dom-screen-wake-lock-1.0.0.tgz#c06e415fca0afb5a6e727b900f3cb8ba3993d130"
+  integrity sha512-3o5jkfJsuhFcKj2EZ3PiEoiQQbB3J/nffsXJBKtyubkBHsX2siS6b4uij3ukr5xgDHsF4BaT9fHo8DneAw/YxA==
+
 "@types/estree@*":
   version "0.0.49"
   resolved "https://registry.yarnpkg.com/@types/estree/-/estree-0.0.49.tgz#3facb98ebcd4114a4ecef74e0de2175b56fd4464"