Hello world

First open source release of Campfire 🎉

app/javascript/controllers/pwa_install_controller.js

@@ -0,0 +1,35 @@
+import { Controller } from "@hotwired/stimulus"
+import { getCookie, setCookie } from "lib/cookie"
+
+export default class extends Controller {
+  static classes = [ "prompting" ]
+
+  connect() {
+    if (this.#canInstall && !this.#isInstalledPWA) {
+      window.addEventListener("beforeinstallprompt", this.#preventPrompt)
+      window.addEventListener("appinstalled", this.#installed)
+    }
+  }
+
+  promptInstall = () => {
+    this.deferredPrompt.prompt()
+  }
+
+  #installed = () => {
+    this.element.classList.remove(this.promptingClass)
+  }
+
+  #preventPrompt = (event) => {
+    event.preventDefault()
+    this.deferredPrompt = event;
+    this.element.classList.add(this.promptingClass)
+  }
+
+  get #canInstall() {
+    return "serviceWorker" in navigator
+  }
+
+  get #isInstalledPWA() {
+    return window.matchMedia("(display-mode: standalone)").matches
+  }
+}