Hello world

First open source release of Campfire 🎉

app/javascript/controllers/badge_dot_controller.js

@@ -0,0 +1,31 @@
+import { Controller } from "@hotwired/stimulus"
+import { onNextEventLoopTick } from "helpers/timing_helpers"
+
+export default class extends Controller {
+  static targets = [ "unread" ]
+  static classes = [ "unread" ]
+
+  connect() {
+    onNextEventLoopTick(() => this.update())
+  }
+
+  update() {
+    if (this.#available) {
+      const unreadCount = this.#unreadCount
+
+      if (unreadCount > 0) {
+        navigator.setAppBadge(unreadCount)
+      } else {
+        navigator.clearAppBadge()
+      }
+    }
+  }
+
+  get #unreadCount() {
+    return this.unreadTargets.filter(unreadTarget => unreadTarget.classList.contains(this.unreadClass)).length
+  }
+
+  get #available() {
+    return "setAppBadge" in navigator
+  }
+}