603 lines
23 KiB
JavaScript
603 lines
23 KiB
JavaScript
// Progressive Web App functionality
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// Handles service worker registration and PWA features
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class PWAManager {
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constructor() {
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this.swRegistration = null;
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this.vapidPublicKey = null;
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this.pushSubscription = null;
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this.init();
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}
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async init() {
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console.log('PWA: Initializing PWA Manager...');
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if ('serviceWorker' in navigator) {
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try {
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this.swRegistration = await navigator.serviceWorker.register('/sw.js');
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console.log('SW: Service Worker registered successfully');
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// Listen for updates
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this.swRegistration.addEventListener('updatefound', () => {
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console.log('SW: New version available');
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this.showUpdateNotification();
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});
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} catch (error) {
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console.log('SW: Service Worker registration failed:', error);
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}
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}
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// Setup PWA install prompt
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this.setupInstallPrompt();
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// Setup notifications (if enabled)
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this.setupNotifications();
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// Setup push notifications
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this.setupPushNotifications();
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// Show manual install option after 3 seconds if no prompt appeared and app not installed
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setTimeout(() => {
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if (!document.getElementById('pwa-install-btn') && !this.isInstalled()) {
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this.showManualInstallButton();
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}
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}, 3000);
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}
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setupInstallPrompt() {
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let deferredPrompt;
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window.addEventListener('beforeinstallprompt', (e) => {
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console.log('PWA: beforeinstallprompt event fired');
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// Prevent Chrome 67 and earlier from automatically showing the prompt
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e.preventDefault();
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deferredPrompt = e;
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// Show custom install button
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this.showInstallButton(deferredPrompt);
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});
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window.addEventListener('appinstalled', () => {
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console.log('PWA: App was installed');
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this.hideInstallButton();
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});
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// Debug: Check if app is already installed
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if (this.isInstalled()) {
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console.log('PWA: App is already installed (standalone mode)');
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// Hide any existing install buttons
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this.hideInstallButton();
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} else {
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console.log('PWA: App is not installed, waiting for install prompt...');
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}
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// Periodically check if app becomes installed (for cases where user installs via browser menu)
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setInterval(() => {
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if (this.isInstalled()) {
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this.hideInstallButton();
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}
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}, 2000);
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}
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showInstallButton(deferredPrompt) {
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// Don't show install button if app is already installed
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if (this.isInstalled()) {
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console.log('PWA: App already installed, skipping install button');
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return;
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}
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// Create install button
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const installBtn = document.createElement('button');
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installBtn.id = 'pwa-install-btn';
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installBtn.className = 'btn btn-primary btn-sm';
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installBtn.innerHTML = '<i class="fas fa-download"></i> Install App';
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installBtn.style.cssText = `
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position: fixed;
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bottom: 20px;
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right: 20px;
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z-index: 1000;
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box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
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`;
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installBtn.addEventListener('click', async () => {
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if (deferredPrompt) {
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deferredPrompt.prompt();
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const { outcome } = await deferredPrompt.userChoice;
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console.log('PWA: User response to install prompt:', outcome);
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deferredPrompt = null;
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this.hideInstallButton();
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}
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});
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document.body.appendChild(installBtn);
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}
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hideInstallButton() {
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const installBtn = document.getElementById('pwa-install-btn');
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if (installBtn) {
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installBtn.remove();
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}
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}
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showUpdateNotification() {
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// Show update available notification
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const notification = document.createElement('div');
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notification.className = 'alert alert-info alert-dismissible';
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notification.style.cssText = `
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position: fixed;
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top: 20px;
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right: 20px;
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z-index: 1050;
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max-width: 300px;
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`;
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notification.innerHTML = `
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<strong>Update Available!</strong><br>
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A new version of the app is ready.
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<button type="button" class="btn btn-sm btn-outline-info ms-2" id="update-btn">
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Update Now
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</button>
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<button type="button" class="btn-close" data-bs-dismiss="alert"></button>
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`;
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document.body.appendChild(notification);
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// Handle update
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document.getElementById('update-btn').addEventListener('click', () => {
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if (this.swRegistration && this.swRegistration.waiting) {
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this.swRegistration.waiting.postMessage({ type: 'SKIP_WAITING' });
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window.location.reload();
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}
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});
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}
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async setupNotifications() {
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// Check if notifications are supported and get permission
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if ('Notification' in window) {
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const permission = await this.requestNotificationPermission();
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console.log('Notifications permission:', permission);
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}
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}
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async requestNotificationPermission() {
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if (Notification.permission === 'default') {
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// Only request permission when user interacts with a relevant feature
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// For now, just return the current status
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return Notification.permission;
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}
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return Notification.permission;
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}
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// Show notification (if permission granted)
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showNotification(title, options = {}) {
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if (Notification.permission === 'granted') {
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const notification = new Notification(title, {
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icon: '/icons/icon-192x192.png',
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badge: '/icons/icon-72x72.png',
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tag: 'littleshop-admin',
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...options
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});
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// Auto-close after 5 seconds
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setTimeout(() => {
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notification.close();
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}, 5000);
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return notification;
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}
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}
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// Show manual install button for browsers that don't auto-prompt
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showManualInstallButton() {
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// Don't show install button if app is already installed
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if (this.isInstalled()) {
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console.log('PWA: App already installed, skipping manual install button');
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return;
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}
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console.log('PWA: Showing manual install button');
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const installBtn = document.createElement('button');
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installBtn.id = 'pwa-install-btn';
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installBtn.className = 'btn btn-primary btn-sm';
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installBtn.innerHTML = '<i class="fas fa-mobile-alt"></i> Install as App';
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installBtn.style.cssText = `
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position: fixed;
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bottom: 20px;
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right: 20px;
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z-index: 1000;
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box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
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`;
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installBtn.addEventListener('click', () => {
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alert('To install this app:\\n\\n1. Click the browser menu (⋮)\\n2. Select "Install LittleShop Admin"\\n\\nOr look for the install icon in the address bar!');
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});
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document.body.appendChild(installBtn);
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}
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// Check if app is installed
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isInstalled() {
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return window.matchMedia('(display-mode: standalone)').matches ||
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window.navigator.standalone === true;
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}
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// Setup push notifications
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async setupPushNotifications() {
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if (!('serviceWorker' in navigator) || !('PushManager' in window)) {
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console.log('PWA: Push notifications not supported');
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return;
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}
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try {
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// Check if user has dismissed push notifications recently
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const dismissedUntil = localStorage.getItem('pushNotificationsDismissedUntil');
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if (dismissedUntil && new Date() < new Date(dismissedUntil)) {
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console.log('PWA: Push notifications dismissed by user, skipping setup');
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return;
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}
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// Get VAPID public key from server
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await this.getVapidPublicKey();
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// Check if user is already subscribed
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await this.checkPushSubscription();
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// Only show setup UI if not subscribed and not recently dismissed
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const isSubscribedFromCache = localStorage.getItem('pushNotificationsSubscribed') === 'true';
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if (!this.pushSubscription && !isSubscribedFromCache) {
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this.showPushNotificationSetup();
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} else {
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console.log('PWA: User already subscribed to push notifications, skipping setup UI');
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}
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} catch (error) {
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console.error('PWA: Failed to setup push notifications:', error);
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}
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}
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async getVapidPublicKey() {
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try {
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const response = await fetch('/api/push/vapid-key');
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if (response.ok) {
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const data = await response.json();
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this.vapidPublicKey = data.publicKey;
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console.log('PWA: VAPID public key retrieved');
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} else {
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throw new Error('Failed to get VAPID public key');
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}
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} catch (error) {
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console.error('PWA: Error getting VAPID public key:', error);
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throw error;
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}
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}
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async checkPushSubscription() {
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if (!this.swRegistration) {
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return;
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}
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try {
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this.pushSubscription = await this.swRegistration.pushManager.getSubscription();
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if (this.pushSubscription) {
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console.log('PWA: Browser has push subscription');
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// Verify server-side subscription still exists by trying to send a test
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try {
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const response = await fetch('/api/push/subscriptions', {
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credentials: 'same-origin'
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});
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if (response.ok) {
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const subscriptions = await response.json();
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const hasServerSubscription = subscriptions.some(sub =>
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sub.endpoint && this.pushSubscription.endpoint.includes(sub.endpoint.substring(0, 50))
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);
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if (!hasServerSubscription) {
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console.log('PWA: Server subscription missing, will re-subscribe on next attempt');
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localStorage.removeItem('pushNotificationsSubscribed');
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} else {
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console.log('PWA: Server subscription confirmed');
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localStorage.setItem('pushNotificationsSubscribed', 'true');
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}
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}
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} catch (error) {
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console.log('PWA: Could not verify server subscription:', error.message);
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}
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} else {
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console.log('PWA: User is not subscribed to push notifications');
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localStorage.removeItem('pushNotificationsSubscribed');
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}
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} catch (error) {
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console.error('PWA: Error checking push subscription:', error);
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}
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}
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async subscribeToPushNotifications() {
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if (!this.swRegistration || !this.vapidPublicKey) {
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throw new Error('Service worker or VAPID key not available');
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}
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try {
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// Check current permission status
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if (Notification.permission === 'denied') {
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throw new Error('Notification permission was denied. Please enable notifications in your browser settings.');
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}
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// Request notification permission if not already granted
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let permission = Notification.permission;
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if (permission === 'default') {
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permission = await Notification.requestPermission();
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}
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if (permission !== 'granted') {
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throw new Error('Notification permission is required for push notifications. Please allow notifications and try again.');
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}
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// Subscribe to push notifications
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const subscription = await this.swRegistration.pushManager.subscribe({
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userVisibleOnly: true,
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applicationServerKey: this.urlBase64ToUint8Array(this.vapidPublicKey)
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});
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// Send subscription to server
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const response = await fetch('/api/push/subscribe', {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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},
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body: JSON.stringify({
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endpoint: subscription.endpoint,
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p256dh: btoa(String.fromCharCode(...new Uint8Array(subscription.getKey('p256dh')))),
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auth: btoa(String.fromCharCode(...new Uint8Array(subscription.getKey('auth'))))
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}),
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credentials: 'same-origin'
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});
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if (response.ok) {
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this.pushSubscription = subscription;
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console.log('PWA: Successfully subscribed to push notifications');
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// Cache subscription state
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localStorage.setItem('pushNotificationsSubscribed', 'true');
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localStorage.setItem('pushNotificationsSubscribedAt', new Date().toISOString());
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this.updatePushNotificationUI();
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return true;
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} else {
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throw new Error('Failed to save push subscription to server');
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}
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} catch (error) {
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console.error('PWA: Failed to subscribe to push notifications:', error);
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throw error;
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}
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}
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async unsubscribeFromPushNotifications() {
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if (!this.pushSubscription) {
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return true;
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}
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try {
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// Unsubscribe from push manager
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await this.pushSubscription.unsubscribe();
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// Notify server
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await fetch('/api/push/unsubscribe', {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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},
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body: JSON.stringify({
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endpoint: this.pushSubscription.endpoint
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}),
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credentials: 'same-origin'
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});
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this.pushSubscription = null;
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console.log('PWA: Successfully unsubscribed from push notifications');
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// Clear subscription cache
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localStorage.removeItem('pushNotificationsSubscribed');
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localStorage.removeItem('pushNotificationsSubscribedAt');
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this.updatePushNotificationUI();
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return true;
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} catch (error) {
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console.error('PWA: Failed to unsubscribe from push notifications:', error);
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throw error;
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}
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}
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showPushNotificationSetup() {
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// Check if setup UI already exists
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if (document.getElementById('push-notification-setup')) {
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return;
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}
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const setupDiv = document.createElement('div');
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setupDiv.id = 'push-notification-setup';
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setupDiv.className = 'alert alert-info alert-dismissible';
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setupDiv.style.cssText = `
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position: fixed;
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top: 80px;
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right: 20px;
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z-index: 1050;
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max-width: 350px;
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`;
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const isSubscribed = !!this.pushSubscription;
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setupDiv.innerHTML = `
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<div class="d-flex align-items-center">
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<i class="fas fa-bell me-2"></i>
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<div class="flex-grow-1">
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<strong>Push Notifications</strong><br>
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<small>${isSubscribed ? 'You are subscribed to notifications' : 'Get notified of new orders and updates'}</small>
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</div>
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<div class="ms-2">
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${isSubscribed ?
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'<button type="button" class="btn btn-sm btn-outline-danger" id="unsubscribe-push-btn">Turn Off</button>' :
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'<div class="d-flex flex-column gap-1"><button type="button" class="btn btn-sm btn-primary" id="subscribe-push-btn">Turn On</button><button type="button" class="btn btn-sm btn-outline-secondary" id="dismiss-push-btn">Not Now</button></div>'
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}
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</div>
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</div>
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<button type="button" class="btn-close" data-bs-dismiss="alert" id="close-push-setup"></button>
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`;
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document.body.appendChild(setupDiv);
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// Add event listeners
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const subscribeBtn = document.getElementById('subscribe-push-btn');
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const unsubscribeBtn = document.getElementById('unsubscribe-push-btn');
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const dismissBtn = document.getElementById('dismiss-push-btn');
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const closeBtn = document.getElementById('close-push-setup');
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if (subscribeBtn) {
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subscribeBtn.addEventListener('click', async () => {
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subscribeBtn.disabled = true;
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subscribeBtn.innerHTML = '<i class="fas fa-spinner fa-spin me-1"></i>Subscribing...';
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try {
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await this.subscribeToPushNotifications();
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this.showNotification('Push notifications enabled!', {
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body: 'You will now receive notifications for new orders and updates.'
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});
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} catch (error) {
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console.error('PWA: Push subscription failed:', error);
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// Provide user-friendly error messages
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let userMessage = error.message;
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if (error.message.includes('permission')) {
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userMessage = 'Please allow notifications when your browser asks, then try again.';
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}
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alert('Failed to enable push notifications: ' + userMessage);
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subscribeBtn.disabled = false;
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subscribeBtn.innerHTML = 'Turn On';
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}
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});
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}
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if (unsubscribeBtn) {
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unsubscribeBtn.addEventListener('click', async () => {
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unsubscribeBtn.disabled = true;
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unsubscribeBtn.innerHTML = '<i class="fas fa-spinner fa-spin me-1"></i>Disabling...';
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try {
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await this.unsubscribeFromPushNotifications();
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this.showNotification('Push notifications disabled', {
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body: 'You will no longer receive push notifications.'
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});
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} catch (error) {
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alert('Failed to disable push notifications: ' + error.message);
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unsubscribeBtn.disabled = false;
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unsubscribeBtn.innerHTML = 'Turn Off';
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}
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});
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}
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// Handle dismiss button
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if (dismissBtn) {
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dismissBtn.addEventListener('click', () => {
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// Dismiss for 24 hours
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const dismissUntil = new Date();
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dismissUntil.setHours(dismissUntil.getHours() + 24);
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localStorage.setItem('pushNotificationsDismissedUntil', dismissUntil.toISOString());
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const element = document.getElementById('push-notification-setup');
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if (element) {
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element.remove();
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}
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console.log('PWA: Push notifications dismissed for 24 hours');
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});
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}
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// Handle close button
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if (closeBtn) {
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closeBtn.addEventListener('click', () => {
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// Dismiss for 1 hour
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const dismissUntil = new Date();
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dismissUntil.setHours(dismissUntil.getHours() + 1);
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localStorage.setItem('pushNotificationsDismissedUntil', dismissUntil.toISOString());
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console.log('PWA: Push notifications dismissed for 1 hour');
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});
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}
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// Auto-hide after 15 seconds
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setTimeout(() => {
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const element = document.getElementById('push-notification-setup');
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if (element) {
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element.remove();
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// Auto-dismiss for 2 hours if user ignores
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const dismissUntil = new Date();
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dismissUntil.setHours(dismissUntil.getHours() + 2);
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localStorage.setItem('pushNotificationsDismissedUntil', dismissUntil.toISOString());
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console.log('PWA: Push notifications auto-dismissed for 2 hours');
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}
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}, 15000);
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}
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updatePushNotificationUI() {
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const setupDiv = document.getElementById('push-notification-setup');
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if (setupDiv) {
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setupDiv.remove();
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this.showPushNotificationSetup();
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}
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}
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async sendTestNotification() {
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try {
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const response = await fetch('/api/push/test', {
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method: 'POST',
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headers: {
|
|
'Content-Type': 'application/json',
|
|
},
|
|
body: JSON.stringify({
|
|
title: 'Test Notification',
|
|
body: 'This is a test push notification from LittleShop Admin!'
|
|
}),
|
|
credentials: 'same-origin'
|
|
});
|
|
|
|
const result = await response.json();
|
|
if (response.ok) {
|
|
console.log('PWA: Test notification sent successfully');
|
|
return true;
|
|
} else {
|
|
throw new Error(result.error || 'Failed to send test notification');
|
|
}
|
|
} catch (error) {
|
|
console.error('PWA: Failed to send test notification:', error);
|
|
throw error;
|
|
}
|
|
}
|
|
|
|
// Helper function to convert VAPID key
|
|
urlBase64ToUint8Array(base64String) {
|
|
const padding = '='.repeat((4 - base64String.length % 4) % 4);
|
|
const base64 = (base64String + padding)
|
|
.replace(/\-/g, '+')
|
|
.replace(/_/g, '/');
|
|
|
|
const rawData = window.atob(base64);
|
|
const outputArray = new Uint8Array(rawData.length);
|
|
|
|
for (let i = 0; i < rawData.length; ++i) {
|
|
outputArray[i] = rawData.charCodeAt(i);
|
|
}
|
|
return outputArray;
|
|
}
|
|
}
|
|
|
|
// Initialize PWA Manager
|
|
const pwaManager = new PWAManager();
|
|
window.pwaManager = pwaManager;
|
|
|
|
// Expose notification functions globally
|
|
window.showNotification = (title, options) => pwaManager.showNotification(title, options);
|
|
window.sendTestPushNotification = () => pwaManager.sendTestNotification();
|
|
window.subscribeToPushNotifications = () => pwaManager.subscribeToPushNotifications();
|
|
window.unsubscribeFromPushNotifications = () => pwaManager.unsubscribeFromPushNotifications(); |