Release 202506091000

web/src/lib/client/browserNotifications.ts

@@ -0,0 +1,60 @@
+import { typedLocalStorage } from '../localstorage'
+
+type SafeResult = { success: false; error: string } | { success: true; error?: undefined }
+
+export function supportsBrowserNotifications() {
+  return 'Notification' in window
+}
+
+export function isBrowserNotificationsEnabled() {
+  return (
+    supportsBrowserNotifications() &&
+    Notification.permission === 'granted' &&
+    typedLocalStorage.browserNotificationsEnabled.get()
+  )
+}
+
+export async function enableBrowserNotifications(): Promise<SafeResult> {
+  try {
+    if (!supportsBrowserNotifications()) {
+      return { success: false, error: 'Browser notifications are not supported' }
+    }
+
+    const permission = await Notification.requestPermission()
+    if (permission !== 'granted') {
+      return { success: false, error: 'Notification permission denied' }
+    }
+
+    typedLocalStorage.browserNotificationsEnabled.set(true)
+    return { success: true }
+  } catch (error) {
+    console.error('Browser notification setup failed:', error)
+    const errorMessage = error instanceof Error ? error.message : String(error)
+    return { success: false, error: `Browser notification setup failed: ${errorMessage}` }
+  }
+}
+
+export function disableBrowserNotifications(): SafeResult {
+  try {
+    typedLocalStorage.browserNotificationsEnabled.set(false)
+    return { success: true }
+  } catch (error) {
+    console.error('Browser notification disable failed:', error)
+    const errorMessage = error instanceof Error ? error.message : String(error)
+    return { success: false, error: `Browser notification disable failed: ${errorMessage}` }
+  }
+}
+
+export function showBrowserNotification(title: string, options?: NotificationOptions) {
+  if (!isBrowserNotificationsEnabled()) {
+    console.warn('Browser notifications are not enabled')
+    return null
+  }
+
+  try {
+    return new Notification(title, options)
+  } catch (error) {
+    console.error('Failed to show browser notification:', error)
+    return null
+  }
+}