refactor pending or processing

Reviewed-on: #21

apps/api/src/orders/order-status-rules-assignment-4.test.ts

@@ -0,0 +1,108 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
+import type { AppWithContext } from "../app";
+import { buildApp } from "../app";
+import { createUser } from "../users/user-repository";
+
+let app: AppWithContext;
+let employeeCookie = "";
+
+function firstHeader(value: string | string[] | undefined) {
+  return Array.isArray(value) ? value[0] : value ?? "";
+}
+
+async function login(username: string) {
+  const response = await app.inject({ method: "POST", url: "/api/login", payload: { username } });
+  return firstHeader(response.headers["set-cookie"]);
+}
+
+beforeEach(async () => {
+  app = await buildApp(":memory:");
+
+  await createUser(app.dbContext, {
+    username: "dev-employee",
+    name: "Dev Employee",
+    email: "dev.employee@example.com",
+    role: "employee"
+  });
+
+  employeeCookie = await login("dev-employee");
+});
+
+afterEach(async () => {
+  await app.close();
+});
+
+describe("assignment 4 order lifecycle rules", () => {
+  test("keeps quantity editing blocked for processing orders", async () => {
+    const response = await app.inject({
+      method: "POST",
+      url: "/api/orders/order_2/items/item_3/quantity",
+      headers: { cookie: employeeCookie },
+      payload: { quantity: 2 }
+    });
+
+    expect(response.statusCode).toBe(400);
+  });
+
+  test("allows address editing for processing orders", async () => {
+    const response = await app.inject({
+      method: "POST",
+      url: "/api/orders/order_2/shipping-address",
+      headers: { cookie: employeeCookie },
+      payload: {
+        fullName: "Jane Doe",
+        line1: "50 New Street",
+        line2: null,
+        city: "Oakland",
+        state: "CA",
+        postalCode: "94607",
+        country: "US"
+      }
+    });
+
+    expect(response.statusCode).toBe(200);
+    expect(response.json().shippingAddress.city).toBe("Oakland");
+  });
+
+  test("allows cancellation for processing orders", async () => {
+    const response = await app.inject({
+      method: "POST",
+      url: "/api/orders/order_2/cancel",
+      headers: { cookie: employeeCookie },
+      payload: { reason: "Customer request" }
+    });
+
+    expect(response.statusCode).toBe(200);
+    expect(response.json().status).toBe("cancelled");
+  });
+
+  test("blocks address editing for shipped orders", async () => {
+    const response = await app.inject({
+      method: "POST",
+      url: "/api/orders/order_3/shipping-address",
+      headers: { cookie: employeeCookie },
+      payload: {
+        fullName: "John Smith",
+        line1: "77 Final Mile Road",
+        line2: null,
+        city: "Denver",
+        state: "CO",
+        postalCode: "80202",
+        country: "US"
+      }
+    });
+
+    expect(response.statusCode).toBe(400);
+  });
+
+  test("blocks cancellation for shipped orders", async () => {
+    const response = await app.inject({
+      method: "POST",
+      url: "/api/orders/order_3/cancel",
+      headers: { cookie: employeeCookie },
+      payload: { reason: "Late request" }
+    });
+
+    expect(response.statusCode).toBe(400);
+  });
+});

apps/api/src/orders/order-status.test.ts

@@ -0,0 +1,26 @@
+import { describe, expect, test } from "bun:test";
+import { canCancelOrder, canEditOrderItems, canEditShippingAddress } from "./order-status";
+
+describe("order status rules", () => {
+  const cases = [
+    { status: "pending", editItems: true, editShipping: true, cancel: true },
+    { status: "processing", editItems: false, editShipping: true, cancel: true },
+    { status: "shipped", editItems: false, editShipping: false, cancel: false },
+    { status: "cancelled", editItems: false, editShipping: false, cancel: false },
+    { status: "refunded", editItems: false, editShipping: false, cancel: false }
+  ] as const;
+
+  for (const { status, editItems, editShipping, cancel } of cases) {
+    test(`item editing is ${editItems ? "allowed" : "denied"} for ${status} orders`, () => {
+      expect(canEditOrderItems(status)).toBe(editItems);
+    });
+
+    test(`shipping address editing is ${editShipping ? "allowed" : "denied"} for ${status} orders`, () => {
+      expect(canEditShippingAddress(status)).toBe(editShipping);
+    });
+
+    test(`cancellation is ${cancel ? "allowed" : "denied"} for ${status} orders`, () => {
+      expect(canCancelOrder(status)).toBe(cancel);
+    });
+  }
+});

apps/api/src/orders/order-status.ts

@@ -1,13 +1,17 @@
 import type { OrderStatus } from "@orderops/shared/order-status";
 
+function isPendingOrProcessing(status: OrderStatus) {
+  return status === "pending" || status === "processing";
+}
+
 export function canEditOrderItems(status: OrderStatus) {
   return status === "pending";
 }
 
 export function canEditShippingAddress(status: OrderStatus) {
-  return status === "pending" || status === "processing";
+  return isPendingOrProcessing(status);
 }
 
 export function canCancelOrder(status: OrderStatus) {
-  return status === "pending" || status === "processing";
+  return isPendingOrProcessing(status);
 }