Create invoicing data retriever

src/controller/invoice.controller.ts

@@ -0,0 +1,38 @@
+import { Controller, Get, Req } from '@nestjs/common';
+import { PurchaseService } from 'src/service/purchase.service';
+import { SessionService } from 'src/service/session.service';
+import { UserService } from 'src/service/user.service';
+
+@Controller('/invoice')
+export class InvoiceController {
+  constructor(
+    private readonly userService: UserService,
+    private readonly purchaseService: PurchaseService,
+    private readonly sessionService: SessionService,
+  ) {}
+
+  @Get()
+  public async getAllInvoices(@Req() request) {
+    const userId = request.userId;
+    const user = await this.userService.getUserById(userId);
+    const purchases = await this.purchaseService.getPurchasesForUser(user);
+    const sessions = (await this.sessionService.getAllSessions()).filter(
+      (session) => session.users.find((u) => u.id === userId),
+    );
+
+    const purchaseData = purchases.map((purchase) => ({
+      product: purchase.purchasedProduct,
+      units: purchase.purchasedUnits,
+      status: purchase.status,
+    }));
+    const sessionsData = sessions.map((session) => ({
+      date: session.date,
+      status: session.status,
+    }));
+
+    return {
+      purchaseData,
+      sessionsData,
+    };
+  }
+}

src/controller/session.controller.ts

@@ -21,7 +21,6 @@ export class SessionController {
   public async getAllSessions(@Req() request) {
     const userId = request.userId;
     const sessions = await this.sessionService.getAllSessions();
-    const user = await this.userService.getUserById(userId);
     return sessions.map((session) => ({
       id: session.id,
       size: session.size,