# GoodGo Frontend Audit Report
**Date**: April 10, 2026 | **Framework**: Next.js 15.5.14 (App Router)

---

## 1. **App Structure** ✅

**Status**: GOOD - Next.js 15 App Router properly implemented

### Pages & Routes (22 pages total):
- **Public**: Landing (`/`), Search Results (`/search`), Listing Detail (`/listings/[id]`)
- **Auth** ✅: Login, Register, OAuth callbacks (Google, Zalo)
- **Dashboard** ✅: Main dashboard, Profile, Payments, KYC, Subscription, Valuation, Analytics
- **Listings** ✅: List, Create (`/new`), Edit (`/[id]/edit`)
- **Admin Panel** ✅: Dashboard, KYC Review, Moderation, Users Management

### Route Groups (Organized correctly):
```
(public) → Landing, Search, Listing Detail
(auth) → Login, Register, OAuth
(dashboard) → All user-facing features
(admin) → Admin-only features
```

### Middleware & i18n:
✅ Locale-aware routing (`/[locale]/*`)
✅ Authentication middleware with cookie-based auth
✅ Protected routes redirect to login
✅ next-intl v4.9.0 for English/Vietnamese

---

## 2. **Components & UI System** ✅

**Status**: EXCELLENT - shadcn/ui + Tailwind properly implemented

### shadcn/ui Components (14 found):
- Button, Badge, Card, Dialog, Input, Label, Select, Table, Tabs, Textarea
- ✅ Using CVA (class-variance-authority) for variants
- ✅ Tailwind dark mode support included

### Custom Components:
- **Listings**: `listing-detail-client`, `image-gallery`, `image-upload`, `listing-form-steps`
- **Maps**: `listing-map`, `district-heatmap`
- **Charts**: District bar chart, analytics charts
- **Auth**: Auth forms (login/register)
- **Search**: Search filters, results layout

### Design Tokens:
✅ CSS custom properties (HSL-based)
✅ Tailwind config extends with proper color system
✅ Dark mode ready (`@media (prefers-color-scheme: dark)`)

---

## 3. **State Management** ✅

**Status**: GOOD - Zustand properly integrated

### Stores:
- **auth-store.ts** (117 lines): User auth, login, logout, token refresh
  - Methods: `login()`, `register()`, `logout()`, `fetchProfile()`, `initialize()`
  - Handles OAuth callbacks
  - ✅ Error handling with custom ApiError class

### React Query:
✅ TanStack React Query v5.96.2 integrated
✅ Custom hooks:
  - `use-listings`, `use-analytics`, `use-payments`, `use-subscription`, `use-valuation`, `use-saved-searches`
✅ Query client configuration:
  - Stale time: 60s
  - GC time: 5min
  - Retry: 3x with exponential backoff
  - ✅ Error boundary with fallback UI

---

## 4. **API Integration** ✅

**Status**: GOOD - Well-structured API client

### API Client (`api-client.ts`):
- ✅ Centralized request handler with CSRF token support
- ✅ Cookie-based auth (`credentials: 'include'`)
- ✅ Custom ApiError class with status codes
- ✅ Methods: `get()`, `post()`, `patch()`, `delete()`

### API Modules:
- `auth-api.ts`: Login, register, OAuth exchange, token refresh
- `listings-api.ts` (190 lines): CRUD operations
- `admin-api.ts` (179 lines): Admin features
- `analytics-api.ts`, `payment-api.ts`, `subscription-api.ts`
- `saved-search-api.ts`

### API Base URL:
- Environment-based: `NEXT_PUBLIC_API_URL` or `http://localhost:3001/api/v1`

---

## 5. **Maps Integration** ✅

**Status**: GOOD - Mapbox GL properly integrated

### Mapbox GL v3.21.0:
✅ Used in 2 components:
- `components/map/listing-map.tsx`: Property detail view
- `components/charts/district-heatmap.tsx`: Analytics heatmap

### Implementation:
✅ Dynamic imports (no SSR) → prevents build errors
✅ CSS imported: `mapbox-gl/dist/mapbox-gl.css`
✅ CSP headers configured for Mapbox domains
✅ Supported features: Geo-location (`permission: geolocation`), Maps rendering

### Issues: ⚠️ **MINOR**
- Mapbox API key not verified in code (likely env variable)
- No error handling visible for map load failures

---

## 6. **Authentication** ✅

**Status**: GOOD - Cookie + OAuth implemented

### Flow:
1. Cookie-based auth (`goodgo_authenticated=1`)
2. Token stored server-side (HTTP-only cookies)
3. OAuth support: Google, Zalo
4. Token refresh mechanism with retry logic

### Middleware Protection:
✅ Public paths: `/`, `/login`, `/register`, `/search`, `/auth/callback`
✅ Auth-only paths redirect to dashboard if logged in
✅ Protected paths require `goodgo_authenticated` cookie

### Security Headers:
✅ HSTS, X-Frame-Options, X-Content-Type-Options
✅ CSP configured
✅ Referrer-Policy: strict-origin-when-cross-origin

---

## 7. **Testing** ⚠️ **NEEDS WORK**

**Status**: PARTIAL - Only 4 test files found

### Test Coverage:
- `auth-store.spec.ts` (217 lines)
- `auth/__tests__/login.spec.tsx`, `register.spec.tsx`
- `search/__tests__/search.spec.tsx`
- `listings/__tests__/create-listing.spec.tsx`
- UI components: `__tests__/button.spec.tsx`, `card.spec.tsx`, etc.

### Test Setup:
✅ Vitest + React Testing Library
✅ JSDOM environment
✅ MSW v2.13.2 for API mocking

### **Issues**: 🔴
- Only ~7 main page tests (46 tsx files, <10% coverage)
- No e2e tests
- **Recommendation**: Add integration tests for critical flows (auth, search, listings)

---

## 8. **Performance** ⚠️ **NEEDS OPTIMIZATION**

**Status**: PARTIAL - Some optimizations in place

### Good:
✅ Dynamic imports for map components (`next/dynamic`)
✅ Suspense boundaries for lazy-loaded content
✅ Image optimization ready (Next.js config allows remote images)
✅ Standalone output mode (better Docker builds)
✅ React Query caching (5min GC time)

### Issues: 🔴
- No explicit `Image` component usage found (using `<img>` tags likely)
  - **Impact**: Missing automatic optimization, size reduction
- 30 `'use client'` directives found (some likely unnecessary)
  - **Recommendation**: Audit and move data fetching to Server Components
- No font optimization detected
  - **Missing**: `next/font` for system fonts or Google Fonts
- No visible route prefetch strategy
- Limited loading states (some pages have `loading.tsx`, others don't)

### Web Vitals:
✅ web-vitals v5.2.0 integrated
✅ Sentry monitoring configured

---

## 9. **Accessibility** 🔴 **NEEDS WORK**

**Status**: POOR - Minimal a11y attributes detected

### Found (28 instances):
- 4 `role="alert"` on error boundaries
- Some `aria-*` attributes in forms
- Limited `alt` text on images

### Missing:
❌ No `aria-label` / `aria-describedby` strategy
❌ No keyboard navigation testing
❌ Limited contrast testing
❌ No ARIA live regions beyond errors
❌ Form labels disconnected from inputs in some cases

### **Recommendation**: 
- Run axe DevTools audit
- Add `aria-label` to icon-only buttons
- Ensure all inputs have proper labels
- Test with keyboard navigation

---

## 10. **Build Configuration** ✅

**Status**: GOOD - Properly configured

### Next.js Config (`next.config.js`):
✅ Strict mode enabled
✅ Sentry integration
✅ next-intl plugin
✅ Standalone output
✅ CSP headers configured
✅ Image optimization (remote patterns)

### Tailwind Config:
✅ Dark mode support
✅ CVA integration
✅ Animation plugin
✅ Proper content paths

### TypeScript:
✅ ES2017 target
✅ Bundler module resolution
✅ Path aliases (`@/*`)
✅ Incremental builds enabled

---

## 11. **Missing Pages vs MVP Blueprint** 🔴

**MVP Pages (11 planned)**:
1. ✅ Landing (`/`)
2. ✅ Search Results (`/search`)
3. ✅ Listing Detail (`/listings/[id]`)
4. ✅ Login (`/login`)
5. ✅ Register (`/register`)
6. ✅ Dashboard (`/dashboard`)
7. ✅ Admin Panel (`/admin`)
8. ✅ Analytics (`/analytics`)
9. ⚠️ **Pricing** - **MISSING**
10. ✅ Saved Searches (`/dashboard/saved-searches`)
11. ✅ Payments (`/dashboard/payments`)

### Additional Pages Found (Not in MVP):
- KYC (user & admin)
- Subscription
- Profile
- Valuation
- Listings CRUD
- Moderation (admin)

### **Critical Gap**: 🔴 **NO PRICING PAGE**
- Should list subscription tiers, features, pricing

---

## 12. **Overall Summary**

| Category | Status | Score |
|----------|--------|-------|
| App Structure | ✅ Excellent | 95% |
| Components & UI | ✅ Excellent | 95% |
| State Management | ✅ Good | 90% |
| API Integration | ✅ Good | 90% |
| Maps Integration | ✅ Good | 85% |
| Authentication | ✅ Good | 85% |
| Testing | ⚠️ Needs Work | 40% |
| Performance | ⚠️ Partial | 65% |
| Accessibility | 🔴 Poor | 30% |
| Build Config | ✅ Good | 90% |
| MVP Coverage | ⚠️ Partial | 90% (missing pricing) |

---

## **Action Items (Priority Order)**

### 🔴 Critical:
1. **Create pricing page** (`/pricing`) - MVP requirement
2. **Add a11y attributes** - WCAG baseline (2 hours)
3. **Increase test coverage** - Aim for 60%+ (4-6 hours)

### 🟡 Important:
4. Audit `'use client'` directives - move to Server Components where possible
5. Add `next/image` optimization
6. Add font optimization (`next/font`)
7. Add loading/error states to all pages

### 🟢 Nice-to-Have:
8. E2E tests with Playwright
9. Performance budget setup
10. Pre-rendering strategy for public pages

---

## **Dependencies Review**

| Package | Version | Status |
|---------|---------|--------|
| next | 15.5.14 | ✅ Latest |
| react | 18.3.0 | ✅ Latest |
| zustand | 5.0.12 | ✅ Latest |
| @tanstack/react-query | 5.96.2 | ✅ Latest |
| mapbox-gl | 3.21.0 | ✅ Latest |
| tailwindcss | 3.4.0 | ⚠️ v4 available |
| typescript | 6.0.2 | ✅ Latest |

---

**Report Generated**: 2026-04-10 | **Auditor**: Claude Code Audit System
