Разработан веб-сервер и расширение для браузеров на базе Chromium

server/static/scripts/main.js

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+const colorThief = new ColorThief();
+const musicElement = document.querySelector('#music');
+const progressBarElement = musicElement.querySelector('#music > .progress-bar');
+const titleElement = progressBarElement.querySelector('#music > .progress-bar > .data > .title');
+const artistsElement = progressBarElement.querySelector('#music > .progress-bar > .data > .artists');
+const coverElement = progressBarElement.querySelector('#music > .progress-bar > .cover');
+
+const handlers = {
+    'target': (attributes) => {
+        const target = document.getElementById(attributes.id);
+        target.style.setProperty('--progress-size', `${attributes.progress}`);
+    },
+    'music': (attributes) => {
+        titleElement.textContent = attributes.title;
+        artistsElement.textContent = attributes.artists;
+        musicElement.style.setProperty('--progress-size', `${(1 - attributes.progress) * 100}%`);
+        const url = new URL(location);
+        url.pathname = '/image';
+        const urlSearchParams = new URLSearchParams();
+        urlSearchParams.set('src', attributes.image);
+        url.search = urlSearchParams.toString();
+        coverElement.src = url;
+        const colors = colorThief.getPalette(coverElement, 2);
+        progressBarElement.style.setProperty('--primary-color', `rgb(${colors[0][0]}, ${colors[0][1]}, ${colors[0][2]})`);
+        progressBarElement.style.setProperty('--secondary-color', `rgb(${colors[1][0]}, ${colors[1][1]}, ${colors[1][2]})`);
+        musicElement.classList.remove('hidden');
+    },
+};
+
+const connectWebSocket = () => {
+    const ws = new WebSocket('ws://localhost:8000/ws/v1/overlay');
+
+    ws.onmessage = (event) => {
+        const data = JSON.parse(event.data);
+        handlers[data.type](data.attributes);
+    };
+
+    ws.onclose = () => connectWebSocket();
+};
+
+connectWebSocket();

server/static/styles/main.css

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+@property --primary-color {
+    syntax: '<color>';
+    initial-value: white;
+    inherits: false;
+}
+
+@property --secondary-color {
+    syntax: '<color>';
+    initial-value: white;
+    inherits: false;
+}
+
+:root {
+    --text-shadow: 0 0 12px rgba(0, 0, 0, 0.4);
+    --box-shadow: 0 .5rem .75rem .375rem rgba(0, 0, 0, .15), 0 .25rem .25rem rgba(0, 0, 0, .3);
+}
+
+* {
+    font-family: 'Exo 2', sans-serif;
+    user-select: none;
+}
+
+html {
+    display: flex;
+    flex-direction: column;
+    height: 100%;
+    overflow: hidden;
+}
+
+body {
+    padding: 2rem;
+}
+
+#root {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+}
+
+#root > * {
+    width: 30rem;
+}
+
+#root > *:not(:first-child) {
+    margin-top: 2rem;
+}
+
+#root > *.hidden {
+    display: none;
+}
+
+#root > * > .title {
+    margin-bottom: .5rem;
+    color: white;
+    text-shadow: var(--text-shadow);
+    font-size: 1.5rem;
+    font-weight: 600;
+}
+
+#music {
+    display: flex;
+    flex-direction: column;
+    --progress: 100%;
+}
+
+#music > .progress-bar {
+    position: relative;
+    display: flex;
+    align-items: center;
+    margin-top: .5rem;
+    padding: 1rem;
+    width: 28rem;
+    background-image: linear-gradient(225deg, var(--primary-color), var(--secondary-color));
+    box-shadow: var(--box-shadow);
+    border-radius: .5rem;
+    overflow: hidden;
+    transition:
+            opacity .4s,
+            --primary-color 1s,
+            --secondary-color 1s;
+    --progress-size: inherit;
+    --progress-color: inherit;
+}
+
+#music > .progress-bar::before {
+    content: '';
+    position: absolute;
+    top: 0;
+    right: var(--progress-size);
+    bottom: 0;
+    left: 0;
+    background-color: rgba(0, 0, 0, .3);
+    transition:
+            right 1s,
+            background-color 4s;
+}
+
+#music > .progress-bar > .data {
+    display: flex;
+    flex-direction: column;
+    margin-left: 1rem;
+    overflow-x: hidden;
+    z-index: 1;
+}
+
+#music > .progress-bar > .data > .title,
+#music > .progress-bar > .data > .artists {
+    color: white;
+    white-space: nowrap;
+    overflow-x: hidden;
+    text-overflow: ellipsis;
+}
+
+#music > .progress-bar > .data > .title {
+    font-size: 1.2rem;
+    font-weight: 600;
+}
+
+#music > .progress-bar > .data > .artists {
+    font-size: 1rem;
+    font-weight: 400;
+}
+
+#music > .progress-bar > .cover {
+    flex-shrink: 0;
+    width: 3rem;
+    height: 3rem;
+    object-fit: cover;
+    z-index: 1;
+}