feat: add inventoryId to SalesInvoice and related models; implement createOrder functionality in POS service

src/pos/pos.service.ts

@@ -2,6 +2,7 @@ import { Injectable } from '@nestjs/common'
 import { ResponseMapper } from '../common/response/response-mapper'
 import { Prisma } from '../generated/prisma/client'
 import { PrismaService } from '../prisma/prisma.service'
+import { CreateOrderDto } from './dto/create-pos.dto'
 
 @Injectable()
 export class PosService {
@@ -109,8 +110,38 @@ export class PosService {
     return ResponseMapper.list(categories)
   }
 
-  async createSaleInvoice(data: any) {
-    const item = await this.prisma.salesInvoice.create({ data })
+  async createOrder(data: CreateOrderDto, inventoryId: number) {
+    const { customerId, ...res } = data
+    const preparedOrder = { ...res } as any
+    const lastCode = await this.prisma.salesInvoice
+      .findFirst({
+        orderBy: { code: 'desc' },
+        select: { code: true },
+      })
+      .then(si => si?.code || '0')
+
+    preparedOrder.code = String(Number(lastCode) + 1)
+
+    preparedOrder.totalAmount = data.items.reduce(
+      (acc, item) => acc + Number(item.fee),
+      0,
+    )
+
+    preparedOrder.inventory = { connect: { id: inventoryId } }
+    preparedOrder.customer = { connect: { id: customerId } }
+
+    if (Object.prototype.hasOwnProperty.call(preparedOrder, 'items')) {
+      preparedOrder.items = {
+        create: preparedOrder.items.map((item: any) => ({
+          product: { connect: { id: Number(item.productId) } },
+          count: item.count,
+          fee: item.fee,
+          total: item.count * item.fee,
+        })),
+      }
+    }
+
+    const item = await this.prisma.salesInvoice.create({ data: preparedOrder })
     return ResponseMapper.create(item)
   }
 }