feat: add customer cart with expiry, shipping addresses with USPS validation, and multi-item PayPal checkout

backend/src/server.ts

@@ -1,16 +1,59 @@
+import cron from 'node-cron';
 import app from './app';
 import { pool } from './db';
+import { sendMail } from './mailer';
 
+// Release cart holds whose expiry has passed, every 5 minutes.
 setInterval(async () => {
   try {
-    await pool.query(
-      `UPDATE items SET status = 'available', reserved_until = NULL, paypal_order_id = NULL
-       WHERE status = 'reserved' AND reserved_until < now()`
+    const { rows } = await pool.query(
+      `DELETE FROM cart_items WHERE expires_at < now() RETURNING item_id`
     );
+    for (const row of rows) {
+      await pool.query(`UPDATE items SET status = 'available' WHERE id = $1 AND status = 'reserved'`, [row.item_id]);
+    }
   } catch (err) {
-    console.error('reservation sweep failed:', (err as Error).message);
+    console.error('cart expiry sweep failed:', (err as Error).message);
   }
-}, 60 * 1000);
+}, 5 * 60 * 1000);
+
+// Daily cart reminder emails at 9am server time, for customers who opted into marketing email.
+cron.schedule('0 9 * * *', async () => {
+  try {
+    const { rows } = await pool.query(`
+      SELECT c.email, c.name, i.name AS item_name, ci.expires_at, ci.id AS cart_item_id
+      FROM cart_items ci
+      JOIN carts ca ON ca.id = ci.cart_id
+      JOIN customers c ON c.id = ca.customer_id
+      JOIN items i ON i.id = ci.item_id
+      WHERE c.marketing_consent = true
+        AND (ci.last_reminder_sent_at IS NULL OR ci.last_reminder_sent_at < now() - interval '20 hours')
+        AND ci.expires_at > now()
+    `);
+
+    const byEmail = new Map<string, { name: string | null; items: { name: string; expiresAt: Date; cartItemId: number }[] }>();
+    for (const row of rows) {
+      if (!byEmail.has(row.email)) byEmail.set(row.email, { name: row.name, items: [] });
+      byEmail.get(row.email)!.items.push({ name: row.item_name, expiresAt: row.expires_at, cartItemId: row.cart_item_id });
+    }
+
+    for (const [email, data] of byEmail) {
+      const itemList = data.items.map(i => `<li>${i.name} — reserved until ${i.expiresAt.toLocaleString()}</li>`).join('');
+      await sendMail(
+        email,
+        'Items waiting in your cart',
+        `<p>Hi${data.name ? ' ' + data.name : ''},</p>
+         <p>You still have items in your cart at Redefined Designs:</p>
+         <ul>${itemList}</ul>
+         <p><a href="${process.env.PUBLIC_URL}/cart">View your cart</a> before your reservation expires.</p>`
+      );
+      const ids = data.items.map(i => i.cartItemId);
+      await pool.query(`UPDATE cart_items SET last_reminder_sent_at = now() WHERE id = ANY($1::int[])`, [ids]);
+    }
+  } catch (err) {
+    console.error('daily cart reminder job failed:', (err as Error).message);
+  }
+});
 
 const PORT = parseInt(process.env.PORT || '3000', 10);
 app.listen(PORT, () => console.log(`redefined-designs listening on ${PORT}`));