chore: add service to approve a invoice by user

src/modules/invoices/invoices.controller.ts

@@ -1,4 +1,4 @@
-import { Body, Controller, Get, Param, Post, Query } from "@nestjs/common";
+import { Body, Controller, Get, Param, Patch, Post, Query } from "@nestjs/common";
 import { ApiOperation } from "@nestjs/swagger";
 
 import { ApplyDiscountDto } from "./DTO/apply-discount-invoice.dto";
@@ -48,6 +48,13 @@ export class InvoicesController {
     return this.invoiceService.getInvoiceById(paramDto.id, isAdmin, userId);
   }
 
+  @ApiOperation({ summary: "approve invoice by user" })
+  @AuthGuards()
+  @Patch(":id/approve")
+  approveInvoiceByUser(@Param() paramDto: ParamDto, @UserDec("id") userId: string) {
+    return this.invoiceService.approveInvoiceByUser(paramDto.id, userId);
+  }
+
   @Post(":id/apply-discount")
   async applyDiscount(@Param() paramDto: ParamDto, @Body() applyDiscountDto: ApplyDiscountDto) {
     return this.invoiceService.applyDiscount(paramDto.id, applyDiscountDto);