# 🔒 Security Fixes Applied - Customer Permissions

## Issue: Customers Could Delete Tickets ❌

**Problem Identified:**

-   Customers had permission to delete their own tickets
-   This is a business logic and security issue
-   Tickets should be preserved for audit trails and business records

## ✅ Security Fixes Applied

### 1. **Backend API Restrictions**

**File:** `app/Http/Controllers/TicketController.php`

#### Delete Permission Fix:

```php
// BEFORE: Customers could delete their own tickets
if (!$user->isAdmin() && $ticket->customer_id !== $user->id) {
    return response()->json(['message' => 'Unauthorized'], 403);
}

// AFTER: Only admins can delete tickets
if (!$user->isAdmin()) {
    return response()->json(['message' => 'Only administrators can delete tickets'], 403);
}
```

#### Update Permission Refinement:

```php
// BEFORE: Customers could change status and admin assignments
$data = $req->only(['subject', 'description', 'category', 'priority', 'status', 'assigned_admin_id']);

// AFTER: Role-based field restrictions
if ($user->isAdmin()) {
    // Admins can update everything
    $data = $req->only(['subject', 'description', 'category', 'priority', 'status', 'assigned_admin_id']);
} else {
    // Customers can only update basic info, not status or admin assignment
    $data = $req->only(['subject', 'description', 'category', 'priority']);
}
```

### 2. **Frontend UI Restrictions**

**File:** `resources/js/components/tickets/TicketDetail.jsx`

#### Delete Button Visibility:

```jsx
// BEFORE: Both admins and customers could see delete button
{
    (user?.role === "admin" || ticket.customer_id === user?.id) && (
        <button onClick={deleteTicket}>Delete Ticket</button>
    );
}

// AFTER: Only admins can see delete button
{
    user?.role === "admin" && (
        <button onClick={deleteTicket}>Delete Ticket</button>
    );
}
```

#### Status Field Restriction:

```jsx
// BEFORE: Status field was disabled for customers but still visible
<select disabled={!user?.role === 'admin' && ticket.customer_id !== user?.id}>

// AFTER: Status field completely hidden from customers
{user?.role === 'admin' && (
    <div>
        <label>Status</label>
        <select value={editData.status}>
            <option value="open">Open</option>
            <option value="in_progress">In Progress</option>
            <option value="resolved">Resolved</option>
            <option value="closed">Closed</option>
        </select>
    </div>
)}
```

## 🔐 New Permission Matrix

### **Customer Permissions:**

| Action           | Permission    | Notes                                    |
| ---------------- | ------------- | ---------------------------------------- |
| Create Ticket    | ✅ Allowed    | Can create new tickets                   |
| View Own Tickets | ✅ Allowed    | Can see their own tickets only           |
| Edit Basic Info  | ✅ Allowed    | Subject, description, category, priority |
| Change Status    | ❌ **Denied** | Only admins can manage status            |
| Assign Admin     | ❌ **Denied** | Only admins can assign tickets           |
| Delete Ticket    | ❌ **Denied** | Only admins can delete tickets           |
| Add Comments     | ✅ Allowed    | Can comment on their tickets             |
| Use Chat         | ✅ Allowed    | Can chat with support                    |

### **Admin Permissions:**

| Action           | Permission | Notes                                     |
| ---------------- | ---------- | ----------------------------------------- |
| Create Ticket    | ✅ Allowed | Can create tickets on behalf of customers |
| View All Tickets | ✅ Allowed | Can see all tickets in system             |
| Edit All Fields  | ✅ Allowed | Full editing capabilities                 |
| Change Status    | ✅ Allowed | Can manage ticket workflow                |
| Assign Tickets   | ✅ Allowed | Can assign to themselves or others        |
| Delete Ticket    | ✅ Allowed | Can delete tickets when necessary         |
| Add Comments     | ✅ Allowed | Can comment on any ticket                 |
| Use Chat         | ✅ Allowed | Can chat with customers                   |

## 🛡️ Security Benefits

### **Business Logic Protection:**

-   ✅ Tickets cannot be accidentally deleted by customers
-   ✅ Audit trail preservation for compliance
-   ✅ Proper workflow management (only admins control status)
-   ✅ Administrative oversight maintained

### **Data Integrity:**

-   ✅ Prevents data loss from customer mistakes
-   ✅ Maintains ticket history for analysis
-   ✅ Ensures proper escalation procedures
-   ✅ Protects against malicious deletion

### **User Experience:**

-   ✅ Cleaner interface for customers (fewer confusing options)
-   ✅ Clear role separation
-   ✅ Prevents customer confusion about workflow
-   ✅ Maintains professional support process

## 🧪 Testing the Fixes

### **Test as Customer:**

1. Login as `customer@example.com` / `password`
2. Create or view a ticket
3. Click "Edit Ticket"
4. **Verify:** No "Delete Ticket" button visible
5. **Verify:** No "Status" dropdown visible
6. **Verify:** No "Assigned Admin" field visible
7. **Verify:** Can only edit: Subject, Description, Category, Priority

### **Test as Admin:**

1. Login as `admin@example.com` / `password`
2. View any ticket
3. Click "Edit Ticket"
4. **Verify:** "Delete Ticket" button is visible
5. **Verify:** "Status" dropdown is available
6. **Verify:** "Assigned Admin" field is available
7. **Verify:** Can edit all fields

### **API Security Test:**

```bash
# Try to delete ticket as customer (should fail)
curl -X DELETE http://localhost:8000/api/tickets/1 \
  -H "Authorization: Bearer customer_token"
# Expected: 403 "Only administrators can delete tickets"

# Try to change status as customer (should be ignored)
curl -X POST http://localhost:8000/api/tickets/1 \
  -H "Authorization: Bearer customer_token" \
  -d "status=closed"
# Expected: Status field ignored, other fields updated
```

## ✅ Status: Security Issue Resolved

The customer delete permission vulnerability has been completely fixed:

-   ✅ **Backend:** API endpoints properly restrict delete access to admins only
-   ✅ **Frontend:** Delete button hidden from customers
-   ✅ **Business Logic:** Proper role-based field restrictions implemented
-   ✅ **User Experience:** Clean, role-appropriate interfaces
-   ✅ **Data Protection:** Tickets cannot be accidentally deleted by customers

The system now follows proper security practices and business logic for a support ticketing system! 🔒✨
