feat(bookings): implement ticket receipts and seat sharing system

Add receipt tokens and booking_seats table to track individual tickets
Create receipt and seat view pages with QR code generation

server/utils/db-init.ts

@@ -2,6 +2,7 @@ import { randomUUID } from 'node:crypto'
 
 import { DEFAULT_USER_PASSWORD } from '~~/shared/auth'
 
+import { randomToken } from './base64url'
 import { hashPassword } from './password'
 import { getSqlClient } from './postgres'
 
@@ -65,6 +66,7 @@ async function initializeDatabase() {
     create table if not exists bookings (
       id text primary key,
       confirmation_token text not null unique,
+      receipt_token text not null unique,
       customer_name text not null,
       customer_phone text not null,
       booking_mode text not null check (booking_mode in ('table', 'pax')),
@@ -83,6 +85,36 @@ async function initializeDatabase() {
     )
   `
 
+  await sql`
+    alter table bookings
+    add column if not exists receipt_token text
+  `
+
+  await sql`
+    create unique index if not exists bookings_receipt_token_idx
+    on bookings (receipt_token)
+  `
+
+  await sql`
+    create table if not exists booking_seats (
+      id text primary key,
+      booking_id text not null references bookings(id) on delete cascade,
+      seat_number integer not null check (seat_number >= 1),
+      seat_token text not null unique,
+      recipient_name text,
+      recipient_phone text,
+      shared_at timestamptz,
+      created_at timestamptz not null default now(),
+      updated_at timestamptz not null default now(),
+      unique (booking_id, seat_number)
+    )
+  `
+
+  await sql`
+    create index if not exists booking_seats_booking_id_idx
+    on booking_seats (booking_id)
+  `
+
   await sql`
     create table if not exists booking_settings (
       id text primary key,
@@ -98,6 +130,74 @@ async function initializeDatabase() {
     on conflict (id) do nothing
   `
 
+  const bookingsMissingReceiptTokens = await sql<{ id: string }[]>`
+    select id
+    from bookings
+    where receipt_token is null or receipt_token = ''
+  `
+
+  for (const booking of bookingsMissingReceiptTokens) {
+    await sql`
+      update bookings
+      set
+        receipt_token = ${randomToken(24)},
+        updated_at = now()
+      where id = ${booking.id}
+    `
+  }
+
+  const existingBookings = await sql<{ id: string, seat_count: number | string }[]>`
+    select
+      id,
+      seat_count
+    from bookings
+  `
+
+  for (const booking of existingBookings) {
+    const seatCount = typeof booking.seat_count === 'number'
+      ? booking.seat_count
+      : Number.parseInt(booking.seat_count, 10)
+
+    const existingSeatRows = await sql<{ seat_number: number | string }[]>`
+      select seat_number
+      from booking_seats
+      where booking_id = ${booking.id}
+    `
+
+    const existingSeatNumbers = new Set(
+      existingSeatRows.map((seat) => typeof seat.seat_number === 'number'
+        ? seat.seat_number
+        : Number.parseInt(seat.seat_number, 10))
+    )
+
+    for (let seatNumber = 1; seatNumber <= seatCount; seatNumber += 1) {
+      if (existingSeatNumbers.has(seatNumber)) {
+        continue
+      }
+
+      await sql`
+        insert into booking_seats (
+          id,
+          booking_id,
+          seat_number,
+          seat_token
+        )
+        values (
+          ${randomUUID()},
+          ${booking.id},
+          ${seatNumber},
+          ${randomToken(24)}
+        )
+        on conflict (booking_id, seat_number) do nothing
+      `
+    }
+  }
+
+  await sql`
+    alter table bookings
+    alter column receipt_token set not null
+  `
+
   const [existingSuperAdmin] = await sql<{ id: string }[]>`
     select id
     from users