# Livewire Security & Implementation Guide

## Status: Development Phase

This document covers security considerations and best practices for Livewire components in the Hazlo ecommerce application. Many vulnerabilities identified below have been partially mitigated through recent authentication and role-based access control implementation.

---

## 🔴 Critical Issues Identified

### 1. Session-Based Cart Without Database Validation

**Severity**: HIGH | **Status**: IN PROGRESS

**Issue**: Cart items stored in session without real-time database validation. Users could manipulate prices, quantities, or add non-existent artworks.

**Current Risk**:
- Price manipulation (session → DB should validate)
- Non-existent artwork additions
- Inventory inconsistencies

**Recommendation**: Migrate cart from session to authenticated Cart model with CartItem relationships.

**Timeline**: Phase 2 (Before Launch)

---

### 2. Missing Authentication on Checkout

**Severity**: HIGH | **Status**: ✅ RESOLVED

**Solution Applied**:
- Route middleware: `auth` 
- Component mount: Validates `auth()->check()`
- Redirect to `/login` if unauthenticated

**Code**:
```php
public function mount(CartService $cartService)
{
    if (!auth()->check()) {
        return redirect('/login');
    }
    if (auth()->user()->isStaff()) {
        return redirect('/')->with('error', 'Staff cannot checkout');
    }
}
```

---

### 3. No Availability Verification

**Severity**: HIGH | **Status**: PARTIALLY MITIGATED

**Issue**: Checkout doesn't verify artwork availability before order creation. Risk of overselling.

**Current Check**:
```php
if ($artwork && $artwork->status === ArtworkStatus::AVAILABLE) {
    // Include in order
}
```

**Recommendation**: Implement pessimistic locking.

```php
$artwork = Artwork::lockForUpdate()->find($artwork->id);
if ($artwork->status !== ArtworkStatus::AVAILABLE) {
    throw new ArtworkNotAvailableException();
}
```

**Timeline**: Phase 1 (Critical)

---

### 4. Price Manipulation via Session

**Severity**: MEDIUM | **Status**: MITIGATED

**Mitigation Applied**: Database validation in `placeOrder()` re-validates prices against actual artwork records.

**Double-Check Code**:
```php
public function placeOrder(CheckoutService $checkoutService, ...)
{
    if (!auth()->check() || !auth()->user()->isCustomer()) {
        $this->addError('order', 'Unauthorized access');
        return;
    }
    // Prices validated before order creation
}
```

---

### 5. Staff Checkout Prevention

**Severity**: MEDIUM | **Status**: ✅ RESOLVED

**Solution Applied**: Dual validation layers:
1. Component mount: Redirects staff
2. placeOrder method: Validates customer role
3. Middleware: CustomerOnly available for routes

---

## 🟡 Performance Issues

### 6. N+1 Query Problem

**File**: `app/Livewire/Art/ArtworkList.php`

**Issue**:
```php
'categories' => Category::all(),     // Unoptimized
'artists' => Artist::all(),          // Unoptimized
'techniques' => Technique::all(),    // Unoptimized
'collections' => Collection::all(),  // Unoptimized
```

**Impact**: 4+ queries per render, no pagination

**Recommendation**: Cache filter options, implement pagination for large datasets

**Timeline**: Phase 3 (Post-Launch)

---

## 🟠 Validation Issues

### 7. Input Validation

**Current Rules**: Email, phone regex, address length

**Missing**:
- Mexico-specific postal code validation
- Email verification check
- XSS prevention in address field

**Timeline**: Phase 2 (Before Launch)

---

## ✅ Implemented Features

### Authentication & Authorization
- [x] Role-based access control (CUSTOMER, STAFF)
- [x] Public registration (customers only)
- [x] Checkout authentication required
- [x] Filament staff-only access
- [x] Automatic logout for unauthorized access

---

## 📋 Implementation Phases

### Phase 1: Critical (Before Production)
- [ ] Pessimistic locking for artwork availability
- [ ] Idempotency key persistence
- [ ] Payment gateway testing

### Phase 2: Important (Before Launch)
- [ ] Cart migration to database
- [ ] Enhanced input validation
- [ ] Rate limiting on submissions
- [ ] Webhook logging

### Phase 3: Enhancements (Post-Launch)
- [ ] Query optimization
- [ ] Abandoned cart recovery
- [ ] Fraud detection

---

## 🧪 Testing Requirements

**Authentication Tests**:
- Public can register as customer
- Customer can login
- Staff can access admin
- Customer cannot access admin

**Security Tests**:
- Price manipulation detected
- Unauthorized checkout blocked
- Staff checkout prevented

---

## 🔒 Best Practices

1. **Always validate authorization first**
2. **Never trust session data alone**
3. **Use database transactions for critical ops**
4. **Log security events**
5. **Validate input server-side**

---

## 📞 Security Reporting

For vulnerabilities, contact development team privately. Do not post publicly.