Digital Marketing Agency: Performance Marketing & Analytics

import { Content, CustomData, DeliveryCategory, EventRequest, UserData, ServerEvent } from 'facebook-nodejs-business-sdk';
import crypto from 'crypto';

export async function dispatchPurchaseCAPI(order: OrderPayload) {
  const hash = (val: string) => crypto.createHash('sha256').update(val.trim().toLowerCase()).digest('hex');

  const userData = new UserData()
    .setEmail(hash(order.customerEmail))
    .setPhone(hash(order.customerPhone))
    .setClientIpAddress(order.clientIp)
    .setClientUserAgent(order.userAgent);

  const customData = new CustomData()
    .setCurrency('USD')
    .setValue(order.totalAmount)
    .setOrderId(order.orderId);

  const serverEvent = new ServerEvent()
    .setEventName('Purchase')
    .setEventTime(Math.floor(Date.now() / 1000))
    .setUserData(userData)
    .setCustomData(customData)
    .setEventId(order.eventId); // Exact match deduplication

  const request = new EventRequest(process.env.META_ACCESS_TOKEN, process.env.META_PIXEL_ID)
    .setEvents([serverEvent]);

  return await request.execute();
}