import { Prisma } from "@prisma/client";
import type { ActionFunctionArgs } from "react-router";
import prisma from "../db.server";
import { authenticate } from "../shopify.server";

/**
 * Mandatory privacy webhooks.
 *  customers/data_request → we hold booking contact details; logged for the merchant to fulfil.
 *  customers/redact       → anonymise that customer's bookings and waitlist entries.
 *  shop/redact            → delete all shop data (48h after uninstall).
 */
export const action = async ({ request }: ActionFunctionArgs) => {
  const { shop, topic, payload } = await authenticate.webhook(request);
  const p = payload as { customer?: { email?: string; phone?: string }; orders_to_redact?: number[] };
  const s = await prisma.shop.findUnique({ where: { domain: shop } });
  if (!s) return new Response();

  if (topic === "CUSTOMERS_DATA_REQUEST") {
    const n = await prisma.booking.count({ where: { shopId: s.id, customerEmail: p.customer?.email ?? "__none__" } });
    console.info(`data_request for ${shop}: ${n} bookings hold this customer's contact details`);
  }
  if (topic === "CUSTOMERS_REDACT") {
    const orderIds = (p.orders_to_redact ?? []).map((id) => `gid://shopify/Order/${id}`);
    const where = {
      shopId: s.id,
      OR: [{ orderId: { in: orderIds } }, ...(p.customer?.email ? [{ customerEmail: p.customer.email }] : [])],
    };
    await prisma.booking.updateMany({
      where,
      data: { customerName: null, customerEmail: null, customerPhone: null, address: Prisma.DbNull },
    });
    if (p.customer?.email || p.customer?.phone)
      await prisma.waitlistEntry.deleteMany({ where: { shopId: s.id, OR: [{ email: p.customer?.email ?? "__" }, { phone: p.customer?.phone ?? "__" }] } });
  }
  if (topic === "SHOP_REDACT") {
    await prisma.shop.delete({ where: { id: s.id } });
    await prisma.session.deleteMany({ where: { shop } });
  }
  return new Response();
};