working push notifiations

backend/src/services/pushNotifications.ts

@@ -0,0 +1,153 @@
+import fetch from 'node-fetch';
+
+const EXPO_PUSH_URL = 'https://exp.host/--/api/v2/push/send';
+
+export interface PushNotificationPayload {
+  to: string;
+  title: string;
+  body: string;
+  data?: Record<string, any>;
+  sound?: string;
+  badge?: number;
+  priority?: 'default' | 'normal' | 'high';
+  channelId?: string;
+}
+
+export interface PushTicket {
+  id: string;
+  status: 'ok' | 'error';
+  message?: string;
+  details?: {
+    error?: string;
+  };
+}
+
+export interface PushReceipt {
+  status: 'ok' | 'error';
+  message?: string;
+  details?: {
+    error?: string;
+  };
+}
+
+interface ExpoPushResponse {
+  data?: PushTicket[] | Record<string, PushReceipt>;
+}
+
+export async function sendPushNotification(payload: PushNotificationPayload): Promise<PushTicket> {
+  const response = await fetch(EXPO_PUSH_URL, {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json',
+      Accept: 'application/json',
+    },
+    body: JSON.stringify(payload),
+  });
+
+  const result = (await response.json()) as ExpoPushResponse;
+  if (result.data && Array.isArray(result.data)) {
+    return result.data[0] ?? { id: '', status: 'error', message: 'No ticket returned' };
+  }
+  return { id: '', status: 'error', message: 'No ticket returned' };
+}
+
+export async function sendPushNotifications(payloads: PushNotificationPayload[]): Promise<PushTicket[]> {
+  const chunks: PushNotificationPayload[][] = [];
+  for (let i = 0; i < payloads.length; i += 100) {
+    chunks.push(payloads.slice(i, i + 100));
+  }
+
+  const tickets: PushTicket[] = [];
+  for (const chunk of chunks) {
+    const response = await fetch(EXPO_PUSH_URL, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+      body: JSON.stringify(chunk),
+    });
+    const result = (await response.json()) as ExpoPushResponse;
+    if (result.data && Array.isArray(result.data)) {
+      tickets.push(...result.data);
+    }
+  }
+  return tickets;
+}
+
+export async function getPushReceipts(ticketIds: string[]): Promise<PushReceipt[]> {
+  if (ticketIds.length === 0) return [];
+
+  const response = await fetch(`${EXPO_PUSH_URL}/receipts`, {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json',
+      Accept: 'application/json',
+    },
+    body: JSON.stringify({ ids: ticketIds }),
+  });
+
+  const result = (await response.json()) as ExpoPushResponse;
+  const receipts: PushReceipt[] = [];
+  if (result.data && !Array.isArray(result.data)) {
+    for (const id of ticketIds) {
+      receipts.push(result.data[id] ?? { status: 'error', message: 'No receipt found' });
+    }
+  }
+  return receipts;
+}
+
+export function isExpoPushToken(token: string): boolean {
+  return token.startsWith('ExponentPushToken[') || token.startsWith('ExpoPushToken[');
+}
+
+export function createTaskReminderPayload(
+  pushToken: string,
+  taskTitle: string,
+  dueTime: string,
+  taskId: string,
+  repeat?: string
+): PushNotificationPayload {
+  return {
+    to: pushToken,
+    title: taskTitle,
+    body: `Due ${dueTime}${repeat && repeat !== 'none' ? ' · repeating' : ''}`,
+    data: { type: 'task_reminder', taskId },
+    sound: 'default',
+    priority: 'high',
+    channelId: 'task-reminders',
+  };
+}
+
+export function createFriendRequestPayload(
+  pushToken: string,
+  fromUsername: string,
+  friendshipId: string
+): PushNotificationPayload {
+  return {
+    to: pushToken,
+    title: 'New Friend Request',
+    body: `${fromUsername} wants to be your friend`,
+    data: { type: 'friend_request', friendshipId },
+    sound: 'default',
+    priority: 'high',
+    channelId: 'friend-requests',
+  };
+}
+
+export function createTaskAssignmentPayload(
+  pushToken: string,
+  taskTitle: string,
+  fromUsername: string,
+  taskId: string
+): PushNotificationPayload {
+  return {
+    to: pushToken,
+    title: 'Task Assigned',
+    body: `${fromUsername} assigned you "${taskTitle}"`,
+    data: { type: 'task_assignment', taskId },
+    sound: 'default',
+    priority: 'high',
+    channelId: 'task-assignments',
+  };
+}