init

src/app/api/bookings/route.ts

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+import { NextResponse } from 'next/server';
+import { prisma } from '@/lib/db';
+import { getSessionUser } from '@/lib/auth';
+
+export async function POST(request: Request) {
+  try {
+    const body = await request.json();
+    const {
+      scheduleId,
+      passengerName,
+      passengerEmail,
+      passengerPhone,
+      seats, // Array of strings, e.g. ["1", "2"] or ["1A", "1B"]
+    } = body;
+
+    if (!scheduleId || !passengerName || !passengerEmail || !passengerPhone || !seats || !Array.isArray(seats) || seats.length === 0) {
+      return NextResponse.json(
+        { error: 'Missing required booking details or seat selections' },
+        { status: 400 }
+      );
+    }
+
+    // Fetch schedule to get the price
+    const schedule = await prisma.schedule.findUnique({
+      where: { id: Number(scheduleId) },
+    });
+
+    if (!schedule) {
+      return NextResponse.json({ error: 'Schedule not found' }, { status: 404 });
+    }
+
+    // Check optional user session link
+    const userSession = await getSessionUser();
+    const userId = userSession ? userSession.userId : null;
+
+    // Calculate total price
+    const unitPrice = Number(schedule.price);
+    const totalPrice = unitPrice * seats.length;
+
+    // Generate unique booking code
+    const bookingCode = 'TRV-' + Math.random().toString(36).substring(2, 8).toUpperCase();
+
+    // Perform database transaction to ensure atomic operations (no double seat bookings)
+    const booking = await prisma.$transaction(async (tx) => {
+      // 1. Check if any selected seat is already occupied for this schedule
+      const occupied = await tx.bookingSeat.findMany({
+        where: {
+          scheduleId: Number(scheduleId),
+          seatNumber: { in: seats },
+          booking: {
+            status: { in: ['PENDING', 'PAID'] },
+          },
+        },
+      });
+
+      if (occupied.length > 0) {
+        throw new Error('One or more selected seats have already been booked. Please choose other seats.');
+      }
+
+      // 2. Create the booking record
+      const newBooking = await tx.booking.create({
+        data: {
+          bookingCode,
+          scheduleId: Number(scheduleId),
+          userId,
+          passengerName,
+          passengerEmail,
+          passengerPhone,
+          totalPrice,
+          status: 'PENDING',
+        },
+      });
+
+      // 3. Create the booking seat records
+      const seatRecords = seats.map((seat: string) => ({
+        bookingId: newBooking.id,
+        scheduleId: Number(scheduleId),
+        seatNumber: seat,
+      }));
+
+      await tx.bookingSeat.createMany({
+        data: seatRecords,
+      });
+
+      return newBooking;
+    });
+
+    return NextResponse.json({ success: true, bookingCode: booking.bookingCode, bookingId: booking.id });
+  } catch (error: any) {
+    console.error('Create booking transaction error:', error);
+    return NextResponse.json(
+      { error: error.message || 'Failed to process booking. Please try again.' },
+      { status: 400 }
+    );
+  }
+}