From 94710dbd9e7eb30bd92194001160665fece00315 Mon Sep 17 00:00:00 2001
From: KubaPro010 <kuba.pro010@gmail.com>
Date: Thu, 2 Apr 2026 23:32:21 +0200
Subject: [PATCH] helper

---
 views/index.ejs       |   1 +
 web/js/3las_helper.js | 140 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 141 insertions(+)
 create mode 100644 web/js/3las_helper.js

diff --git a/views/index.ejs b/views/index.ejs
index 00df8da..a459b2b 100644
--- a/views/index.ejs
+++ b/views/index.ejs
@@ -24,6 +24,7 @@
   <meta property="og:description" content="Server description: <%= tunerDescMeta %>.">
 
   <script src="js/audio.js"></script>
+  <script src="js/3las_helper.js"></script>
   <script type="text/javascript">
     window.addEventListener('load', Init, false);
     document.ontouchmove = function(e) {
diff --git a/web/js/3las_helper.js b/web/js/3las_helper.js
new file mode 100644
index 0000000..a4eae14
--- /dev/null
+++ b/web/js/3las_helper.js
@@ -0,0 +1,140 @@
+/*
+    Helpers is part of 3LAS (Low Latency Live Audio Streaming)
+    https://github.com/JoJoBond/3LAS
+*/
+var isAndroid;
+var isIOS;
+var isIPadOS;
+var isWindows;
+var isLinux;
+var isBSD;
+var isMacOSX;
+var isInternetExplorer;
+var isEdge;
+;
+var isSafari;
+;
+var isOpera;
+;
+var isChrome;
+;
+var isFirefox;
+;
+var webkitVer;
+var isNativeChrome;
+;
+var BrowserName;
+var OSName;
+{
+    var ua = navigator.userAgent.toLowerCase();
+    isAndroid = (ua.match('android') ? true : false);
+    isIOS = (ua.match(/(iphone|ipod)/g) ? true : false);
+    isIPadOS = ((ua.match('ipad') || (navigator.platform == 'MacIntel' && navigator.maxTouchPoints > 1)) ? true : false);
+    isWindows = (ua.match('windows') ? true : false);
+    isLinux = (ua.match('android') ? false : (ua.match('linux') ? true : false));
+    isBSD = (ua.match('bsd') ? true : false);
+    isMacOSX = !isIOS && !isIPadOS && (ua.match('mac os x') ? true : false);
+    isInternetExplorer = (ua.match('msie') ? true : false);
+    isEdge = (ua.match('edg') ? true : false);
+    isSafari = (ua.match(/(chromium|chrome|crios)/g) ? false : (ua.match('safari') ? true : false));
+    isOpera = (ua.match('opera') ? true : false);
+    isChrome = !isSafari && (ua.match(/(chromium|chrome|crios)/g) ? true : false);
+    isFirefox = (ua.match('like gecko') ? false : (ua.match(/(gecko|fennec|firefox)/g) ? true : false));
+    webkitVer = parseInt((/WebKit\/([0-9]+)/.exec(navigator.appVersion) || ["", "0"])[1], 10) || void 0; // also match AppleWebKit
+    isNativeChrome = isAndroid && webkitVer <= 537 && navigator.vendor.toLowerCase().indexOf('google') == 0;
+    BrowserName = "Unknown";
+    if (isInternetExplorer)
+        BrowserName = "IE";
+    else if (isEdge)
+        BrowserName = "Edge";
+    else if (isSafari)
+        BrowserName = "Safari";
+    else if (isOpera)
+        BrowserName = "Opera";
+    else if (isChrome)
+        BrowserName = "Chrome";
+    else if (isFirefox)
+        BrowserName = "Firefox";
+    else if (isNativeChrome)
+        BrowserName = "NativeChrome";
+    else
+        BrowserName = "Unknown";
+    OSName = "Unknown";
+    if (isAndroid)
+        OSName = "Android";
+    else if (isIOS)
+        OSName = "iOS";
+    else if (isIPadOS)
+        OSName = "iPadOS";
+    else if (isWindows)
+        OSName = "Windows";
+    else if (isLinux)
+        OSName = "Linux";
+    else if (isBSD)
+        OSName = "BSD";
+    else if (isMacOSX)
+        OSName = "MacOSX";
+    else
+        OSName = "Unknown";
+}
+;
+var WakeLock = /** @class */ (function () {
+    function WakeLock(logger) {
+        this.Logger = logger;
+        this.Logger.Log("Preparing WakeLock");
+        if (typeof navigator.wakeLock == "undefined") {
+            this.Logger.Log("Using video loop method.");
+            var video = document.createElement('video');
+            video.setAttribute('loop', '');
+            video.setAttribute('style', 'position: fixed; opacity: 0.1; pointer-events: none;');
+            WakeLock.AddSourceToVideo(video, 'webm', 'data:video/webm;base64,' + WakeLock.VideoWebm);
+            WakeLock.AddSourceToVideo(video, 'mp4', 'data:video/mp4;base64,' + WakeLock.VideoMp4);
+            document.body.appendChild(video);
+            this.LockElement = video;
+        }
+        else {
+            this.Logger.Log("Using WakeLock API.");
+            this.LockElement = null;
+        }
+    }
+    WakeLock.prototype.Begin = function () {
+        var _this = this;
+        if (this.LockElement == null) {
+            try {
+                navigator.wakeLock.request("screen").then(function (obj) {
+                    _this.Logger.Log("WakeLock request successful. Lock acquired.");
+                    _this.LockElement = obj; // Not an audio/video element
+                    console.log("WakeLock request successful.");
+                }, function () {
+                    _this.Logger.Log("WakeLock request failed.");
+                    console.log("WakeLock request failed.");
+                });
+            }
+            catch (err) {
+                this.Logger.Log("WakeLock request failed.");
+                console.log("WakeLock request failed.");
+            }
+        }
+        else {
+            this.Logger.Log("WakeLock video loop started.");
+            
+            // Ensure it's an audio/video element before calling play()
+            if (_this.LockElement instanceof HTMLMediaElement) {
+                _this.LockElement.play().catch(err => {
+                    console.error("LockElement failed:", err);
+                });
+            } else {
+                console.warn("LockElement not a media element or already assigned.");
+            }
+        }
+    };
+    WakeLock.AddSourceToVideo = function (element, type, dataURI) {
+        var source = document.createElement('source');
+        source.src = dataURI;
+        source.type = 'video/' + type;
+        element.appendChild(source);
+    };
+    WakeLock.VideoWebm = 'GkXfo0AgQoaBAUL3gQFC8oEEQvOBCEKCQAR3ZWJtQoeBAkKFgQIYU4BnQI0VSalmQCgq17FAAw9CQE2AQAZ3aGFtbXlXQUAGd2hhbW15RIlACECPQAAAAAAAFlSua0AxrkAu14EBY8WBAZyBACK1nEADdW5khkAFVl9WUDglhohAA1ZQOIOBAeBABrCBCLqBCB9DtnVAIueBAKNAHIEAAIAwAQCdASoIAAgAAUAmJaQAA3AA/vz0AAA=';
+    WakeLock.VideoMp4 = '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';
+    return WakeLock;
+}());
\ No newline at end of file