Disallow downgrades in package shop

resources/js/admin/mobile/__tests__/packageShop.test.ts

@@ -1,14 +1,28 @@
 import { describe, expect, it } from 'vitest';
-import { classifyPackageTier, selectRecommendedPackageId } from '../lib/packageShop';
+import { classifyPackageChange, selectRecommendedPackageId } from '../lib/packageShop';
 
-describe('classifyPackageTier', () => {
-  it('returns neutral when no active price', () => {
-    expect(classifyPackageTier(100, null)).toEqual({ isUpgrade: false, isDowngrade: false });
+describe('classifyPackageChange', () => {
+  const active = {
+    id: 1,
+    price: 200,
+    max_photos: 100,
+    max_guests: 50,
+    gallery_days: 30,
+    features: { advanced_analytics: false },
+  } as any;
+
+  it('returns neutral when no active package', () => {
+    expect(classifyPackageChange(active, null)).toEqual({ isUpgrade: false, isDowngrade: false });
   });
 
-  it('marks upgrades and downgrades by price', () => {
-    expect(classifyPackageTier(150, 100)).toEqual({ isUpgrade: true, isDowngrade: false });
-    expect(classifyPackageTier(80, 100)).toEqual({ isUpgrade: false, isDowngrade: true });
+  it('marks upgrade when candidate adds features', () => {
+    const candidate = { ...active, id: 2, price: 150, features: { advanced_analytics: true } } as any;
+    expect(classifyPackageChange(candidate, active)).toEqual({ isUpgrade: true, isDowngrade: false });
+  });
+
+  it('marks downgrade when candidate removes features or limits', () => {
+    const candidate = { ...active, id: 3, max_photos: 50, features: { advanced_analytics: false } } as any;
+    expect(classifyPackageChange(candidate, active)).toEqual({ isUpgrade: false, isDowngrade: true });
   });
 });
 
@@ -24,10 +38,12 @@ describe('selectRecommendedPackageId', () => {
   });
 
   it('selects the cheapest upgrade with the feature', () => {
-    expect(selectRecommendedPackageId(packages, 'advanced_analytics', 120)).toBe(2);
+    const active = { id: 10, price: 120, max_photos: 100, max_guests: 50, gallery_days: 30, features: {} } as any;
+    expect(selectRecommendedPackageId(packages, 'advanced_analytics', active)).toBe(2);
   });
 
   it('falls back to cheapest feature package if no upgrades exist', () => {
-    expect(selectRecommendedPackageId(packages, 'advanced_analytics', 250)).toBe(2);
+    const active = { id: 10, price: 250, max_photos: 999, max_guests: 999, gallery_days: 365, features: { advanced_analytics: true } } as any;
+    expect(selectRecommendedPackageId(packages, 'advanced_analytics', active)).toBe(2);
   });
 });