add qr-codes, share button, and pwa config toggle

app/js/main.js

@@ -8,6 +8,61 @@
  * @link    https://TheTempusProject.com
  * @license https://opensource.org/licenses/MIT [MIT LICENSE]
  */
+
+let deferredPrompt;
+const installPrompt = document.getElementById("install-prompt");
+const installButton = document.getElementById("install-button");
+const dismissButton = document.querySelector("#install-prompt .btn-close");
+
+// Check if the user previously dismissed the prompt
+if (!localStorage.getItem("pwaInstallDismissed")) {
+    window.addEventListener("beforeinstallprompt", (event) => {
+        event.preventDefault();
+        deferredPrompt = event;
+        installPrompt.classList.add("show"); // Show the prompt
+    });
+}
+
+// Handle Install Button Click
+if ( installButton ) {
+    installButton.addEventListener("click", async () => {
+        if (deferredPrompt) {
+            deferredPrompt.prompt();
+            const { outcome } = await deferredPrompt.userChoice;
+    
+            if (outcome === "dismissed") {
+                setInstallDismissed(); // Store that the user dismissed the prompt
+            }
+    
+            deferredPrompt = null; // Reset prompt
+            installPrompt.classList.remove("show"); // Hide the prompt
+        }
+    });
+}
+
+// Handle Close Button Click
+if ( dismissButton ) {
+    dismissButton.addEventListener("click", () => {
+        setInstallDismissed(); // Store that the user dismissed the prompt
+    });
+}
+
+// Function to remember user choice for 7 days
+function setInstallDismissed() {
+    localStorage.setItem("pwaInstallDismissed", Date.now() + 7 * 24 * 60 * 60 * 1000);
+    installPrompt.classList.remove("show"); // Hide the prompt
+}
+
+// Check if the 7-day period has passed
+if (localStorage.getItem("pwaInstallDismissed")) {
+    const dismissUntil = parseInt(localStorage.getItem("pwaInstallDismissed"), 10);
+    if (Date.now() < dismissUntil) {
+        installPrompt.classList.remove("show"); // Ensure it's hidden
+    } else {
+        localStorage.removeItem("pwaInstallDismissed"); // Reset after 7 days
+    }
+}
+
 /**
  * Automatically selects/de-selects all check boxes associated with that field
  **/