fix: alot

apps/api/src/commands/commands.service.ts

@@ -5,6 +5,7 @@ import {
   ConflictException,
 } from '@nestjs/common';
 import { v4 as uuidv4 } from 'uuid';
+import { Prisma } from '@prisma/client';
 import { PrismaService } from '../prisma/prisma.service';
 import { AuditService } from '../audit/audit.service';
 import { RealtimeService } from '../realtime/realtime.service';
@@ -35,7 +36,7 @@ export class CommandsService {
       });
     }
 
-    // Use transaction for consistency
+    // Serializable so two simultaneous requests for the same tab can't both pass the pending check
     const result = await this.prisma.$transaction(async (tx) => {
       // Resolve tab ownership
       const ownership = await tx.tabOwnership.findUnique({
@@ -93,6 +94,8 @@ export class CommandsService {
           venueId,
           deviceId: device.id,
           targetTabId: dto.tabId,
+          customerName: snapshot?.customerName ?? null,
+          amountInCents: snapshot?.totalInCents ?? null,
           type: dto.type || 'close_tab',
           expectedVersion: dto.expectedVersion,
           paymentMethod: dto.paymentMethod,
@@ -130,6 +133,14 @@ export class CommandsService {
         status: command.status,
         ...warning,
       };
+    }, { isolationLevel: Prisma.TransactionIsolationLevel.Serializable }).catch((error) => {
+      if (error instanceof Prisma.PrismaClientKnownRequestError && error.code === 'P2034') {
+        throw new ConflictException({
+          code: 'command_already_pending',
+          message: 'A command for this tab is already pending',
+        });
+      }
+      throw error;
     });
 
     this.realtime.notify(venueId, 'commands');
@@ -152,6 +163,8 @@ export class CommandsService {
         select: {
           id: true,
           targetTabId: true,
+          customerName: true,
+          amountInCents: true,
           type: true,
           status: true,
           paymentMethod: true,
@@ -173,6 +186,8 @@ export class CommandsService {
       commands: commands.map((c) => ({
         id: c.id,
         tabId: c.targetTabId,
+        customerName: c.customerName,
+        amountInCents: c.amountInCents,
         type: c.type,
         status: c.status,
         paymentMethod: c.paymentMethod,