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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 | /** * Push Notifications Service * * Handles browser push notification permissions and subscriptions. * Note: iOS has limited PWA push notification support. */ import { clientLogger } from '@/lib/logging/clientLogger'; // Push notification configuration const PUSH_CONFIG = { publicKeyEnvVar: 'NEXT_PUBLIC_VAPID_PUBLIC_KEY', subscribeEndpoint: '/api/push/subscribe', unsubscribeEndpoint: '/api/push/unsubscribe', } as const; /** * Check if push notifications are supported */ export function isPushSupported(): boolean { return ( typeof window !== 'undefined' && 'Notification' in window && 'serviceWorker' in navigator && 'PushManager' in window ); } /** * Get current notification permission status */ export function getNotificationPermission(): NotificationPermission | null { if (typeof window === 'undefined' || !('Notification' in window)) { return null; } return Notification.permission; } /** * Request notification permission */ export async function requestNotificationPermission(): Promise<NotificationPermission> { if (!('Notification' in window)) { clientLogger.warn('Notifications not supported', { category: 'SYSTEM', }); return 'denied'; } if (Notification.permission === 'granted') { return 'granted'; } if (Notification.permission !== 'denied') { const permission = await Notification.requestPermission(); return permission; } return Notification.permission; } /** * Convert VAPID key from base64 to Uint8Array */ function urlBase64ToUint8Array(base64String: string): Uint8Array<ArrayBuffer> { const padding = '='.repeat((4 - (base64String.length % 4)) % 4); const base64 = (base64String + padding).replace(/-/g, '+').replace(/_/g, '/'); const rawData = window.atob(base64); const buffer = new ArrayBuffer(rawData.length); const outputArray = new Uint8Array(buffer); for (let i = 0; i < rawData.length; ++i) { outputArray[i] = rawData.charCodeAt(i); } return outputArray; } /** * Get existing push subscription */ export async function getExistingSubscription(): Promise<PushSubscription | null> { if (!isPushSupported()) { return null; } try { const registration = await navigator.serviceWorker.ready; return await registration.pushManager.getSubscription(); } catch (error) { clientLogger.error('Failed to get existing subscription', error instanceof Error ? error : undefined, { category: 'SYSTEM', }); return null; } } /** * Subscribe to push notifications */ export async function subscribeToPush(): Promise<PushSubscription | null> { if (!isPushSupported()) { clientLogger.warn('Push notifications not supported', { category: 'SYSTEM', }); return null; } try { const registration = await navigator.serviceWorker.ready; // Check for existing subscription let subscription = await registration.pushManager.getSubscription(); if (!subscription) { // Get VAPID public key const vapidPublicKey = process.env.NEXT_PUBLIC_VAPID_PUBLIC_KEY; if (!vapidPublicKey) { clientLogger.error('VAPID public key not configured', undefined, { category: 'SYSTEM', }); return null; } // Create new subscription subscription = await registration.pushManager.subscribe({ userVisibleOnly: true, applicationServerKey: urlBase64ToUint8Array(vapidPublicKey), }); // Send subscription to server const response = await fetch(PUSH_CONFIG.subscribeEndpoint, { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(subscription.toJSON()), }); if (!response.ok) { clientLogger.error('Failed to save subscription to server', undefined, { category: 'SYSTEM', }); // Unsubscribe since server save failed await subscription.unsubscribe(); return null; } } return subscription; } catch (error) { clientLogger.error('Failed to subscribe to push', error instanceof Error ? error : undefined, { category: 'SYSTEM', }); return null; } } /** * Unsubscribe from push notifications */ export async function unsubscribeFromPush(): Promise<boolean> { if (!isPushSupported()) { return false; } try { const registration = await navigator.serviceWorker.ready; const subscription = await registration.pushManager.getSubscription(); if (subscription) { // Unsubscribe locally await subscription.unsubscribe(); // Notify server await fetch(PUSH_CONFIG.unsubscribeEndpoint, { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ endpoint: subscription.endpoint }), }); } return true; } catch (error) { clientLogger.error('Failed to unsubscribe from push', error instanceof Error ? error : undefined, { category: 'SYSTEM', }); return false; } } /** * Show a local notification (for testing or immediate notifications) */ export async function showLocalNotification( title: string, options?: NotificationOptions ): Promise<boolean> { if (!('Notification' in window)) { return false; } if (Notification.permission !== 'granted') { return false; } try { if ('serviceWorker' in navigator) { const registration = await navigator.serviceWorker.ready; await registration.showNotification(title, { icon: '/icons/icon-192x192.png', badge: '/icons/badge-72x72.png', ...options, }); } else { // Fallback to regular notification new Notification(title, options); } return true; } catch (error) { clientLogger.error('Failed to show notification', error instanceof Error ? error : undefined, { category: 'SYSTEM', }); return false; } } /** * Check if user has enabled notifications */ export function isNotificationsEnabled(): boolean { return getNotificationPermission() === 'granted'; } /** * Get push subscription info for debugging */ export async function getPushSubscriptionInfo(): Promise<{ supported: boolean; permission: NotificationPermission | null; subscribed: boolean; endpoint: string | null; }> { const subscription = await getExistingSubscription(); return { supported: isPushSupported(), permission: getNotificationPermission(), subscribed: !!subscription, endpoint: subscription?.endpoint || null, }; } |