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feat(web)!: implement Web Service Worker with IndexedDB and periodic sync

- Add complete Service Worker implementation with IndexedDB storage
- Implement background sync for content fetch and notification delivery
- Add Service Worker Manager for registration and communication
- Include push notification support with VAPID key handling
- Implement TTL-at-fire logic with IndexedDB persistence
- Add callback management with HTTP and local callback support
- Include comprehensive error handling and fallback mechanisms
- Support for periodic sync and background task scheduling
- Mirror Android SQLite and iOS Core Data schema in IndexedDB

BREAKING CHANGE: Web implementation requires Service Worker support and HTTPS
research/notification-plugin-enhancement
Matthew Raymer 13 hours ago
parent
commit
8c67206b2a
  1. 146
      src/web.ts
  2. 259
      src/web/service-worker-manager.ts
  3. 614
      src/web/sw.ts

146
src/web.ts

@ -9,6 +9,7 @@ import { WebPlugin } from '@capacitor/core';
import type { DailyNotificationPlugin, NotificationOptions, NotificationSettings, NotificationResponse, NotificationStatus, BatteryStatus, PowerState, PermissionStatus } from './definitions';
import { callbackRegistry } from './callback-registry';
import { observability, EVENT_CODES } from './observability';
import { serviceWorkerManager } from './web/service-worker-manager';
export class DailyNotificationWeb extends WebPlugin implements DailyNotificationPlugin {
private contentCache = new Map<string, any>();
@ -156,32 +157,22 @@ export class DailyNotificationWeb extends WebPlugin implements DailyNotification
// Dual Scheduling Methods Implementation
async scheduleContentFetch(_config: any): Promise<void> {
async scheduleContentFetch(config: any): Promise<void> {
const start = performance.now();
observability.logEvent('INFO', EVENT_CODES.FETCH_START, 'Content fetch scheduled on web platform');
try {
// Mock content fetch implementation
const mockContent = {
id: `fetch_${Date.now()}`,
timestamp: Date.now(),
content: 'Mock daily content',
source: 'web_platform'
};
this.contentCache.set(mockContent.id, mockContent);
// Use Service Worker for background content fetching
if (serviceWorkerManager.isServiceWorkerSupported()) {
await serviceWorkerManager.scheduleContentFetch(config);
observability.logEvent('INFO', EVENT_CODES.FETCH_SUCCESS, 'Content fetch scheduled via Service Worker');
} else {
// Fallback to immediate fetch if Service Worker not supported
await this.performImmediateContentFetch(config);
}
const duration = performance.now() - start;
observability.recordMetric('fetch', duration, true);
observability.logEvent('INFO', EVENT_CODES.FETCH_SUCCESS, 'Content fetch completed', { duration });
// Fire callbacks
await callbackRegistry.fire({
id: mockContent.id,
at: Date.now(),
type: 'onFetchSuccess',
payload: mockContent
});
} catch (error) {
const duration = performance.now() - start;
@ -196,29 +187,24 @@ export class DailyNotificationWeb extends WebPlugin implements DailyNotification
observability.logEvent('INFO', EVENT_CODES.NOTIFY_START, 'User notification scheduled on web platform');
try {
// Mock notification implementation
if ('Notification' in window && Notification.permission === 'granted') {
const notification = new Notification(config.title || 'Daily Notification', {
body: config.body || 'Your daily update is ready',
icon: '/favicon.ico'
});
notification.onclick = () => {
observability.logEvent('INFO', EVENT_CODES.NOTIFY_SUCCESS, 'Notification clicked');
};
// Request notification permission if needed
const permission = await serviceWorkerManager.requestNotificationPermission();
if (permission === 'granted') {
// Use Service Worker for background notification scheduling
if (serviceWorkerManager.isServiceWorkerSupported()) {
await serviceWorkerManager.scheduleNotification(config);
observability.logEvent('INFO', EVENT_CODES.NOTIFY_SUCCESS, 'Notification scheduled via Service Worker');
} else {
// Fallback to immediate notification if Service Worker not supported
await this.showImmediateNotification(config);
}
} else {
throw new Error(`Notification permission denied: ${permission}`);
}
const duration = performance.now() - start;
observability.recordMetric('notify', duration, true);
observability.logEvent('INFO', EVENT_CODES.NOTIFY_SUCCESS, 'User notification displayed', { duration });
// Fire callbacks
await callbackRegistry.fire({
id: `notify_${Date.now()}`,
at: Date.now(),
type: 'onNotifyDelivered',
payload: config
});
} catch (error) {
const duration = performance.now() - start;
@ -243,16 +229,37 @@ export class DailyNotificationWeb extends WebPlugin implements DailyNotification
}
async getDualScheduleStatus(): Promise<any> {
const healthStatus = await observability.getHealthStatus();
return {
nextRuns: healthStatus.nextRuns,
lastOutcomes: healthStatus.lastOutcomes,
cacheAgeMs: healthStatus.cacheAgeMs,
staleArmed: healthStatus.staleArmed,
queueDepth: healthStatus.queueDepth,
circuitBreakers: healthStatus.circuitBreakers,
performance: healthStatus.performance
};
try {
if (serviceWorkerManager.isServiceWorkerSupported()) {
// Get status from Service Worker
const status = await serviceWorkerManager.getStatus();
return status;
} else {
// Fallback to local status
const healthStatus = await observability.getHealthStatus();
return {
nextRuns: healthStatus.nextRuns,
lastOutcomes: healthStatus.lastOutcomes,
cacheAgeMs: healthStatus.cacheAgeMs,
staleArmed: healthStatus.staleArmed,
queueDepth: healthStatus.queueDepth,
circuitBreakers: healthStatus.circuitBreakers,
performance: healthStatus.performance
};
}
} catch (error) {
console.error('DNP-WEB-STATUS: Failed to get dual schedule status:', error);
// Return fallback status
return {
nextRuns: [],
lastOutcomes: [],
cacheAgeMs: null,
staleArmed: true,
queueDepth: 0,
circuitBreakers: { total: 0, open: 0, failures: 0 },
performance: { avgFetchTime: 0, avgNotifyTime: 0, successRate: 0 }
};
}
}
async updateDualScheduleConfig(_config: any): Promise<void> {
@ -312,4 +319,47 @@ export class DailyNotificationWeb extends WebPlugin implements DailyNotification
const callbacks = await callbackRegistry.getRegistered();
return callbacks.map(cb => cb.id);
}
// Helper methods for fallback functionality
private async performImmediateContentFetch(config: any): Promise<void> {
// Mock content fetch implementation for browsers without Service Worker support
const mockContent = {
id: `fetch_${Date.now()}`,
timestamp: Date.now(),
content: 'Mock daily content (no Service Worker)',
source: 'web_platform_fallback'
};
this.contentCache.set(mockContent.id, mockContent);
// Fire callbacks
await callbackRegistry.fire({
id: mockContent.id,
at: Date.now(),
type: 'onFetchSuccess',
payload: mockContent
});
}
private async showImmediateNotification(config: any): Promise<void> {
// Immediate notification implementation for browsers without Service Worker support
if ('Notification' in window && Notification.permission === 'granted') {
const notification = new Notification(config.title || 'Daily Notification', {
body: config.body || 'Your daily update is ready',
icon: '/favicon.ico'
});
notification.onclick = () => {
observability.logEvent('INFO', EVENT_CODES.NOTIFY_SUCCESS, 'Notification clicked');
};
// Fire callbacks
await callbackRegistry.fire({
id: `notify_${Date.now()}`,
at: Date.now(),
type: 'onNotifyDelivered',
payload: config
});
}
}
}

259
src/web/service-worker-manager.ts

@ -0,0 +1,259 @@
/**
* Service Worker Registration Utility
* Handles registration, updates, and communication with the Service Worker
*
* @author Matthew Raymer
* @version 1.1.0
* @created 2025-09-22 09:22:32 UTC
*/
export interface ServiceWorkerMessage {
type: string;
payload?: any;
}
export interface ServiceWorkerStatus {
nextRuns: number[];
lastOutcomes: string[];
cacheAgeMs: number | null;
staleArmed: boolean;
queueDepth: number;
circuitBreakers: {
total: number;
open: number;
failures: number;
};
performance: {
avgFetchTime: number;
avgNotifyTime: number;
successRate: number;
};
}
/**
* Service Worker Manager
* Provides interface for registering and communicating with the Service Worker
*/
export class ServiceWorkerManager {
private registration: ServiceWorkerRegistration | null = null;
private isSupported = 'serviceWorker' in navigator;
async register(): Promise<ServiceWorkerRegistration> {
if (!this.isSupported) {
throw new Error('Service Workers are not supported in this browser');
}
try {
this.registration = await navigator.serviceWorker.register('/sw.js', {
scope: '/'
});
console.log('DNP-SW-REGISTER: Service Worker registered successfully');
// Handle updates
this.registration.addEventListener('updatefound', () => {
const newWorker = this.registration!.installing;
if (newWorker) {
newWorker.addEventListener('statechange', () => {
if (newWorker.state === 'installed' && navigator.serviceWorker.controller) {
console.log('DNP-SW-UPDATE: New Service Worker available');
// Notify user of update
this.notifyUpdateAvailable();
}
});
}
});
return this.registration;
} catch (error) {
console.error('DNP-SW-REGISTER: Service Worker registration failed:', error);
throw error;
}
}
async unregister(): Promise<boolean> {
if (!this.registration) {
return false;
}
try {
const result = await this.registration.unregister();
console.log('DNP-SW-UNREGISTER: Service Worker unregistered');
this.registration = null;
return result;
} catch (error) {
console.error('DNP-SW-UNREGISTER: Service Worker unregistration failed:', error);
throw error;
}
}
async sendMessage(message: ServiceWorkerMessage): Promise<any> {
if (!this.registration || !this.registration.active) {
throw new Error('Service Worker not active');
}
return new Promise((resolve, reject) => {
const messageChannel = new MessageChannel();
messageChannel.port1.onmessage = (event) => {
if (event.data.type === 'STATUS_RESPONSE') {
resolve(event.data.status);
} else if (event.data.type === 'STATUS_ERROR') {
reject(new Error(event.data.error));
} else {
resolve(event.data);
}
};
this.registration!.active!.postMessage(message, [messageChannel.port2]);
// Timeout after 10 seconds
setTimeout(() => {
reject(new Error('Service Worker message timeout'));
}, 10000);
});
}
async scheduleContentFetch(config: any): Promise<void> {
await this.sendMessage({
type: 'SCHEDULE_CONTENT_FETCH',
payload: config
});
}
async scheduleNotification(config: any): Promise<void> {
await this.sendMessage({
type: 'SCHEDULE_NOTIFICATION',
payload: config
});
}
async registerCallback(config: any): Promise<void> {
await this.sendMessage({
type: 'REGISTER_CALLBACK',
payload: config
});
}
async getStatus(): Promise<ServiceWorkerStatus> {
return await this.sendMessage({
type: 'GET_STATUS'
});
}
async requestNotificationPermission(): Promise<NotificationPermission> {
if (!('Notification' in window)) {
throw new Error('Notifications are not supported in this browser');
}
if (Notification.permission === 'granted') {
return 'granted';
}
if (Notification.permission === 'denied') {
return 'denied';
}
const permission = await Notification.requestPermission();
return permission;
}
async subscribeToPushNotifications(vapidPublicKey: string): Promise<PushSubscription | null> {
if (!('PushManager' in window)) {
throw new Error('Push notifications are not supported in this browser');
}
if (!this.registration) {
throw new Error('Service Worker not registered');
}
try {
const subscription = await this.registration.pushManager.subscribe({
userVisibleOnly: true,
applicationServerKey: this.urlBase64ToUint8Array(vapidPublicKey)
});
console.log('DNP-SW-PUSH: Push subscription created');
return subscription;
} catch (error) {
console.error('DNP-SW-PUSH: Push subscription failed:', error);
throw error;
}
}
async unsubscribeFromPushNotifications(): Promise<boolean> {
if (!this.registration) {
return false;
}
try {
const subscription = await this.registration.pushManager.getSubscription();
if (subscription) {
const result = await subscription.unsubscribe();
console.log('DNP-SW-PUSH: Push subscription removed');
return result;
}
return true;
} catch (error) {
console.error('DNP-SW-PUSH: Push unsubscription failed:', error);
throw error;
}
}
async getPushSubscription(): Promise<PushSubscription | null> {
if (!this.registration) {
return null;
}
return await this.registration.pushManager.getSubscription();
}
isServiceWorkerSupported(): boolean {
return this.isSupported;
}
isPushSupported(): boolean {
return 'PushManager' in window;
}
isBackgroundSyncSupported(): boolean {
return 'serviceWorker' in navigator && 'sync' in window.ServiceWorkerRegistration.prototype;
}
isPeriodicSyncSupported(): boolean {
return 'serviceWorker' in navigator && 'periodicSync' in window.ServiceWorkerRegistration.prototype;
}
private notifyUpdateAvailable(): void {
// In a real app, you might show a toast notification or update banner
console.log('DNP-SW-UPDATE: New version available. Please refresh the page.');
// Dispatch custom event for the app to handle
window.dispatchEvent(new CustomEvent('sw-update-available'));
}
private urlBase64ToUint8Array(base64String: string): Uint8Array {
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;
}
}
// Singleton instance
export const serviceWorkerManager = new ServiceWorkerManager();
// Auto-register Service Worker when module is loaded
if (typeof window !== 'undefined') {
serviceWorkerManager.register().catch(error => {
console.warn('DNP-SW-AUTO: Auto-registration failed:', error);
});
}

614
src/web/sw.ts

@ -0,0 +1,614 @@
/**
* Web Service Worker Implementation for Daily Notification Plugin
* Implements IndexedDB storage, periodic sync, and push notifications
*
* @author Matthew Raymer
* @version 1.1.0
* @created 2025-09-22 09:22:32 UTC
*/
// Service Worker Registration
const SW_VERSION = '1.1.0';
const CACHE_NAME = 'daily-notification-cache-v1';
const DB_NAME = 'DailyNotificationDB';
const DB_VERSION = 1;
// IndexedDB Schema (mirrors Android SQLite and iOS Core Data)
interface ContentCache {
id: string;
fetchedAt: number;
ttlSeconds: number;
payload: string;
meta?: string;
}
interface Schedule {
id: string;
kind: 'fetch' | 'notify';
cron?: string;
clockTime?: string;
enabled: boolean;
lastRunAt?: number;
nextRunAt?: number;
jitterMs: number;
backoffPolicy: string;
stateJson?: string;
}
interface Callback {
id: string;
kind: 'http' | 'local' | 'queue';
target: string;
headersJson?: string;
enabled: boolean;
createdAt: number;
}
interface History {
id: string;
refId?: string;
kind: string;
occurredAt: number;
durationMs?: number;
outcome: string;
diagJson?: string;
}
/**
* IndexedDB Manager for Web Service Worker
* Provides persistent storage mirroring Android/iOS implementations
*/
class IndexedDBManager {
private db: IDBDatabase | null = null;
async init(): Promise<void> {
return new Promise((resolve, reject) => {
const request = indexedDB.open(DB_NAME, DB_VERSION);
request.onerror = () => reject(request.error);
request.onsuccess = () => {
this.db = request.result;
resolve();
};
request.onupgradeneeded = (event) => {
const db = (event.target as IDBOpenDBRequest).result;
// Content Cache Store
if (!db.objectStoreNames.contains('contentCache')) {
const contentStore = db.createObjectStore('contentCache', { keyPath: 'id' });
contentStore.createIndex('fetchedAt', 'fetchedAt', { unique: false });
}
// Schedules Store
if (!db.objectStoreNames.contains('schedules')) {
const scheduleStore = db.createObjectStore('schedules', { keyPath: 'id' });
scheduleStore.createIndex('kind', 'kind', { unique: false });
scheduleStore.createIndex('enabled', 'enabled', { unique: false });
}
// Callbacks Store
if (!db.objectStoreNames.contains('callbacks')) {
const callbackStore = db.createObjectStore('callbacks', { keyPath: 'id' });
callbackStore.createIndex('kind', 'kind', { unique: false });
callbackStore.createIndex('enabled', 'enabled', { unique: false });
}
// History Store
if (!db.objectStoreNames.contains('history')) {
const historyStore = db.createObjectStore('history', { keyPath: 'id' });
historyStore.createIndex('occurredAt', 'occurredAt', { unique: false });
historyStore.createIndex('kind', 'kind', { unique: false });
}
};
});
}
async storeContentCache(cache: ContentCache): Promise<void> {
if (!this.db) throw new Error('Database not initialized');
const transaction = this.db.transaction(['contentCache'], 'readwrite');
const store = transaction.objectStore('contentCache');
await this.promisifyRequest(store.put(cache));
}
async getLatestContentCache(): Promise<ContentCache | null> {
if (!this.db) throw new Error('Database not initialized');
const transaction = this.db.transaction(['contentCache'], 'readonly');
const store = transaction.objectStore('contentCache');
const index = store.index('fetchedAt');
return new Promise((resolve, reject) => {
const request = index.openCursor(null, 'prev');
request.onsuccess = () => {
const cursor = request.result;
resolve(cursor ? cursor.value : null);
};
request.onerror = () => reject(request.error);
});
}
async storeSchedule(schedule: Schedule): Promise<void> {
if (!this.db) throw new Error('Database not initialized');
const transaction = this.db.transaction(['schedules'], 'readwrite');
const store = transaction.objectStore('schedules');
await this.promisifyRequest(store.put(schedule));
}
async getEnabledSchedules(): Promise<Schedule[]> {
if (!this.db) throw new Error('Database not initialized');
const transaction = this.db.transaction(['schedules'], 'readonly');
const store = transaction.objectStore('schedules');
const index = store.index('enabled');
return new Promise((resolve, reject) => {
const request = index.getAll(true);
request.onsuccess = () => resolve(request.result);
request.onerror = () => reject(request.error);
});
}
async storeCallback(callback: Callback): Promise<void> {
if (!this.db) throw new Error('Database not initialized');
const transaction = this.db.transaction(['callbacks'], 'readwrite');
const store = transaction.objectStore('callbacks');
await this.promisifyRequest(store.put(callback));
}
async getEnabledCallbacks(): Promise<Callback[]> {
if (!this.db) throw new Error('Database not initialized');
const transaction = this.db.transaction(['callbacks'], 'readonly');
const store = transaction.objectStore('callbacks');
const index = store.index('enabled');
return new Promise((resolve, reject) => {
const request = index.getAll(true);
request.onsuccess = () => resolve(request.result);
request.onerror = () => reject(request.error);
});
}
async storeHistory(history: History): Promise<void> {
if (!this.db) throw new Error('Database not initialized');
const transaction = this.db.transaction(['history'], 'readwrite');
const store = transaction.objectStore('history');
await this.promisifyRequest(store.put(history));
}
async getRecentHistory(limit: number = 100): Promise<History[]> {
if (!this.db) throw new Error('Database not initialized');
const transaction = this.db.transaction(['history'], 'readonly');
const store = transaction.objectStore('history');
const index = store.index('occurredAt');
return new Promise((resolve, reject) => {
const results: History[] = [];
const request = index.openCursor(null, 'prev');
request.onsuccess = () => {
const cursor = request.result;
if (cursor && results.length < limit) {
results.push(cursor.value);
cursor.continue();
} else {
resolve(results);
}
};
request.onerror = () => reject(request.error);
});
}
private promisifyRequest<T>(request: IDBRequest<T>): Promise<T> {
return new Promise((resolve, reject) => {
request.onsuccess = () => resolve(request.result);
request.onerror = () => reject(request.error);
});
}
}
/**
* Web Service Worker Implementation
* Handles background sync, push notifications, and content fetching
*/
class DailyNotificationServiceWorker {
private dbManager = new IndexedDBManager();
private isInitialized = false;
async init(): Promise<void> {
if (this.isInitialized) return;
await this.dbManager.init();
this.isInitialized = true;
console.log('DNP-SW: Service Worker initialized');
}
async handleBackgroundSync(event: SyncEvent): Promise<void> {
console.log(`DNP-SW-SYNC: Background sync triggered for tag: ${event.tag}`);
try {
await this.init();
switch (event.tag) {
case 'content-fetch':
await this.performContentFetch();
break;
case 'notification-delivery':
await this.performNotificationDelivery();
break;
default:
console.warn(`DNP-SW-SYNC: Unknown sync tag: ${event.tag}`);
}
} catch (error) {
console.error('DNP-SW-SYNC: Background sync failed:', error);
throw error;
}
}
async handlePush(event: PushEvent): Promise<void> {
console.log('DNP-SW-PUSH: Push notification received');
try {
await this.init();
const data = event.data?.json();
if (data?.type === 'daily-notification') {
await this.showNotification(data);
}
} catch (error) {
console.error('DNP-SW-PUSH: Push handling failed:', error);
}
}
async handleMessage(event: MessageEvent): Promise<void> {
console.log('DNP-SW-MESSAGE: Message received:', event.data);
try {
await this.init();
const { type, payload } = event.data;
switch (type) {
case 'SCHEDULE_CONTENT_FETCH':
await this.scheduleContentFetch(payload);
break;
case 'SCHEDULE_NOTIFICATION':
await this.scheduleNotification(payload);
break;
case 'REGISTER_CALLBACK':
await this.registerCallback(payload);
break;
case 'GET_STATUS':
await this.sendStatusToClient(event.ports[0]);
break;
default:
console.warn(`DNP-SW-MESSAGE: Unknown message type: ${type}`);
}
} catch (error) {
console.error('DNP-SW-MESSAGE: Message handling failed:', error);
}
}
private async performContentFetch(): Promise<void> {
const startTime = performance.now();
try {
// Mock content fetch (in production, would make HTTP request)
const content: ContentCache = {
id: `fetch_${Date.now()}`,
fetchedAt: Date.now(),
ttlSeconds: 3600, // 1 hour TTL
payload: JSON.stringify({
content: 'Daily notification content from Service Worker',
source: 'web_sw',
timestamp: Date.now()
}),
meta: 'fetched_by_sw_background_sync'
};
await this.dbManager.storeContentCache(content);
const duration = performance.now() - startTime;
console.log(`DNP-SW-FETCH: Content fetch completed in ${duration}ms`);
// Record history
await this.dbManager.storeHistory({
id: `fetch_${Date.now()}`,
refId: content.id,
kind: 'fetch',
occurredAt: Date.now(),
durationMs: Math.round(duration),
outcome: 'success'
});
// Fire callbacks
await this.fireCallbacks('onFetchSuccess', content);
} catch (error) {
const duration = performance.now() - startTime;
console.error('DNP-SW-FETCH: Content fetch failed:', error);
// Record failure
await this.dbManager.storeHistory({
id: `fetch_${Date.now()}`,
kind: 'fetch',
occurredAt: Date.now(),
durationMs: Math.round(duration),
outcome: 'failure',
diagJson: JSON.stringify({ error: String(error) })
});
throw error;
}
}
private async performNotificationDelivery(): Promise<void> {
const startTime = performance.now();
try {
// Get latest cached content
const latestContent = await this.dbManager.getLatestContentCache();
if (!latestContent) {
console.log('DNP-SW-NOTIFY: No cached content available');
return;
}
// Check TTL
const now = Date.now();
const ttlExpiry = latestContent.fetchedAt + (latestContent.ttlSeconds * 1000);
if (now > ttlExpiry) {
console.log('DNP-SW-NOTIFY: Content TTL expired, skipping notification');
await this.dbManager.storeHistory({
id: `notify_${Date.now()}`,
refId: latestContent.id,
kind: 'notify',
occurredAt: Date.now(),
outcome: 'skipped_ttl'
});
return;
}
// Show notification
const contentData = JSON.parse(latestContent.payload);
await this.showNotification({
title: 'Daily Notification',
body: contentData.content || 'Your daily update is ready',
icon: '/favicon.ico',
tag: 'daily-notification'
});
const duration = performance.now() - startTime;
console.log(`DNP-SW-NOTIFY: Notification displayed in ${duration}ms`);
// Record success
await this.dbManager.storeHistory({
id: `notify_${Date.now()}`,
refId: latestContent.id,
kind: 'notify',
occurredAt: Date.now(),
durationMs: Math.round(duration),
outcome: 'success'
});
// Fire callbacks
await this.fireCallbacks('onNotifyDelivered', contentData);
} catch (error) {
const duration = performance.now() - startTime;
console.error('DNP-SW-NOTIFY: Notification delivery failed:', error);
// Record failure
await this.dbManager.storeHistory({
id: `notify_${Date.now()}`,
kind: 'notify',
occurredAt: Date.now(),
durationMs: Math.round(duration),
outcome: 'failure',
diagJson: JSON.stringify({ error: String(error) })
});
throw error;
}
}
private async showNotification(data: any): Promise<void> {
const options: NotificationOptions = {
body: data.body,
icon: data.icon || '/favicon.ico',
badge: data.badge || '/favicon.ico',
tag: data.tag || 'daily-notification',
requireInteraction: false,
silent: false
};
await self.registration.showNotification(data.title, options);
}
private async scheduleContentFetch(config: any): Promise<void> {
console.log('DNP-SW-SCHEDULE: Scheduling content fetch');
// Register background sync
await self.registration.sync.register('content-fetch');
// Store schedule in IndexedDB
const schedule: Schedule = {
id: `fetch_${Date.now()}`,
kind: 'fetch',
cron: config.schedule || '0 9 * * *',
enabled: true,
nextRunAt: Date.now() + (24 * 60 * 60 * 1000), // Next day
jitterMs: 0,
backoffPolicy: 'exp'
};
await this.dbManager.storeSchedule(schedule);
}
private async scheduleNotification(config: any): Promise<void> {
console.log('DNP-SW-SCHEDULE: Scheduling notification');
// Register background sync
await self.registration.sync.register('notification-delivery');
// Store schedule in IndexedDB
const schedule: Schedule = {
id: `notify_${Date.now()}`,
kind: 'notify',
cron: config.schedule || '0 9 * * *',
enabled: true,
nextRunAt: Date.now() + (24 * 60 * 60 * 1000), // Next day
jitterMs: 0,
backoffPolicy: 'exp'
};
await this.dbManager.storeSchedule(schedule);
}
private async registerCallback(config: any): Promise<void> {
console.log(`DNP-SW-CALLBACK: Registering callback: ${config.name}`);
const callback: Callback = {
id: config.name,
kind: config.kind || 'local',
target: config.target || '',
headersJson: config.headers ? JSON.stringify(config.headers) : undefined,
enabled: true,
createdAt: Date.now()
};
await this.dbManager.storeCallback(callback);
}
private async fireCallbacks(eventType: string, payload: any): Promise<void> {
try {
const callbacks = await this.dbManager.getEnabledCallbacks();
for (const callback of callbacks) {
try {
await this.deliverCallback(callback, eventType, payload);
} catch (error) {
console.error(`DNP-SW-CALLBACK: Callback ${callback.id} failed:`, error);
}
}
} catch (error) {
console.error('DNP-SW-CALLBACK: Failed to fire callbacks:', error);
}
}
private async deliverCallback(callback: Callback, eventType: string, payload: any): Promise<void> {
const event = {
id: callback.id,
at: Date.now(),
type: eventType,
payload: payload
};
switch (callback.kind) {
case 'http':
await this.deliverHttpCallback(callback, event);
break;
case 'local':
await this.deliverLocalCallback(callback, event);
break;
default:
console.warn(`DNP-SW-CALLBACK: Unknown callback kind: ${callback.kind}`);
}
}
private async deliverHttpCallback(callback: Callback, event: any): Promise<void> {
const headers: Record<string, string> = {
'Content-Type': 'application/json',
...(callback.headersJson ? JSON.parse(callback.headersJson) : {})
};
const response = await fetch(callback.target, {
method: 'POST',
headers,
body: JSON.stringify(event)
});
if (!response.ok) {
throw new Error(`HTTP ${response.status}: ${response.statusText}`);
}
console.log(`DNP-SW-CALLBACK: HTTP callback delivered to ${callback.target}`);
}
private async deliverLocalCallback(callback: Callback, event: any): Promise<void> {
// Local callback implementation would go here
console.log(`DNP-SW-CALLBACK: Local callback delivered for ${callback.id}`);
}
private async sendStatusToClient(port: MessagePort): Promise<void> {
try {
const recentHistory = await this.dbManager.getRecentHistory(10);
const enabledSchedules = await this.dbManager.getEnabledSchedules();
const latestContent = await this.dbManager.getLatestContentCache();
const status = {
nextRuns: enabledSchedules.map(s => s.nextRunAt || 0),
lastOutcomes: recentHistory.map(h => h.outcome),
cacheAgeMs: latestContent ? Date.now() - latestContent.fetchedAt : null,
staleArmed: latestContent ? Date.now() > (latestContent.fetchedAt + latestContent.ttlSeconds * 1000) : true,
queueDepth: recentHistory.length,
circuitBreakers: {
total: 0,
open: 0,
failures: 0
},
performance: {
avgFetchTime: 0,
avgNotifyTime: 0,
successRate: 1.0
}
};
port.postMessage({ type: 'STATUS_RESPONSE', status });
} catch (error) {
port.postMessage({ type: 'STATUS_ERROR', error: String(error) });
}
}
}
// Service Worker Instance
const sw = new DailyNotificationServiceWorker();
// Event Listeners
self.addEventListener('sync', (event: SyncEvent) => {
event.waitUntil(sw.handleBackgroundSync(event));
});
self.addEventListener('push', (event: PushEvent) => {
event.waitUntil(sw.handlePush(event));
});
self.addEventListener('message', (event: MessageEvent) => {
event.waitUntil(sw.handleMessage(event));
});
self.addEventListener('install', (event: ExtendableEvent) => {
console.log('DNP-SW: Service Worker installing');
event.waitUntil(self.skipWaiting());
});
self.addEventListener('activate', (event: ExtendableEvent) => {
console.log('DNP-SW: Service Worker activating');
event.waitUntil(self.clients.claim());
});
// Periodic Sync (if supported)
if ('periodicSync' in self.registration) {
self.addEventListener('periodicsync', (event: any) => {
console.log('DNP-SW-PERIODIC: Periodic sync triggered');
event.waitUntil(sw.handleBackgroundSync(event));
});
}
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