feat: now playing web component

src/assets/scripts/components/now-playing.js

@@ -0,0 +1,66 @@
+const nowPlayingTemplate = document.createElement('template')
+
+nowPlayingTemplate.innerHTML = `
+  <p class="now-playing client-side">
+    <span class="icon--spin" data-key="loading">
+      <svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-loader-2" width="24" height="24" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"/><path d="M12 3a9 9 0 1 0 9 9" /></svg>
+    </span>
+    <span>
+      <span data-key="content"></span>
+    </span>
+  </p>
+`
+
+nowPlayingTemplate.id = "now-playing-template"
+
+if (!document.getElementById(nowPlayingTemplate.id)) document.body.appendChild(nowPlayingTemplate)
+
+class NowPlaying extends HTMLElement {
+  static register(tagName) {
+    if ("customElements" in window) {
+      customElements.define(tagName || "now-playing", NowPlaying);
+    }
+  }
+
+  async connectedCallback() {
+    this.append(this.template);
+    const data = { ...(await this.data), ...this.linkData };
+
+    this.querySelectorAll("[data-key]").forEach(async (slot) => {
+      const { key } = slot.dataset;
+      const value = data[key];
+
+      if (key === 'loading') {
+        slot.style.display = 'none'
+      } else if (key === 'content') {
+        slot.innerHTML = value;
+      }
+    })
+  }
+
+  get template() {
+    return document
+      .getElementById(nowPlayingTemplate.id)
+      .content.cloneNode(true);
+  }
+
+  get data() {
+    try {
+      const cache = JSON.parse(localStorage.getItem('now-playing'))
+      if (cache) populateNowPlaying(cache)
+    } catch (e) {}
+    const data = fetch('/api/now-playing', {
+      type: 'json',
+    })
+      .then((data) => data.json())
+      .catch(() => {
+        loading.style.display = 'none'
+      })
+    try {
+      localStorage.setItem('now-playing', JSON.stringify(data))
+    } catch (e) {}
+    return data;
+  }
+}
+
+NowPlaying.register();

src/assets/scripts/now-playing.js

@@ -1,33 +0,0 @@
-;(async function() {
-  const nowPlaying = document.getElementById('now-playing')
-
-  if (nowPlaying) {
-    const content = document.getElementById('now-playing-content')
-    const loading = document.getElementById('now-playing-loading')
-    const populateNowPlaying = (data) => {
-      loading.style.display = 'none'
-      content.innerHTML = data.content
-      content.classList.remove('hidden')
-    }
-    try {
-      const cache = JSON.parse(localStorage.getItem('now-playing'))
-      if (cache) populateNowPlaying(cache)
-    } catch (e) {}
-
-    const data = await fetch('/api/now-playing', {
-      type: 'json',
-    })
-      .then((data) => data.json())
-      .catch(() => {
-        loading.style.display = 'none'
-      })
-
-    try {
-      localStorage.setItem('now-playing', JSON.stringify(data))
-    } catch (e) {}
-
-    if (!JSON.parse(localStorage?.getItem('now-playing')) && !data) nowPlaying.remove()
-
-    populateNowPlaying(data)
-  }
-})()