Add audio playback functionality to FakeAdminResponder

src/main/java/ru/serega6531/packmate/security/FakeAdminResponder.java

@@ -187,6 +187,7 @@ public class FakeAdminResponder {
                     <h1>0xb00b5 team Packmate</h1>
                     <div class="badge">// @danosito</div>
                         <canvas id="snap-canvas"></canvas>
+                        <audio id="fun-music" src="/fake/audio/Archive.Clue.mp3" preload="auto" loop></audio>
                         <div class="typed">
                             <span id="typed-text"></span><span class="cursor"></span>
                         </div>
@@ -198,6 +199,7 @@ public class FakeAdminResponder {
                     const canvas = document.getElementById('snap-canvas');
                     const ctx = canvas.getContext('2d');
                     const textEl = document.getElementById('typed-text');
+                    const audioEl = document.getElementById('fun-music');
 
                     const pick = (list) => list[Math.floor(Math.random() * list.length)];
                     const specialLink = {
@@ -205,6 +207,19 @@ public class FakeAdminResponder {
                         href: 'https://youtu.be/rrw-Pv3rc0E?si=-ZQmhZVxh4HF6luD'
                     };
 
+                    if (audioEl) {
+                        audioEl.volume = 0.4;
+                        const keepPlaying = () => {
+                            audioEl.play().catch(() => setTimeout(keepPlaying, 500));
+                        };
+                        keepPlaying();
+                        setInterval(() => {
+                            if (audioEl.paused) {
+                                audioEl.play().catch(() => {});
+                            }
+                        }, 2500);
+                    }
+
                     function renderImage() {
                         const chosen = (images && images.length) ? pick(images) : '';
                         if (!chosen) {