# Contact Form with Encryption - Implementation Summary

## Overview
Implemented a secure contact form that saves submissions to the database in encrypted form and displays a designer alert on successful submission.

## Features Implemented

### 1. Database Model with Encryption
- Created `Contact` model in `main/models.py`
- All sensitive fields are encrypted using Fernet symmetric encryption:
  - First Name
  - Last Name
  - Email
  - Phone Number
  - Subject
  - Message
- Encryption key is derived from Django's SECRET_KEY
- Includes getter/setter methods for easy encryption/decryption

### 2. Secure Form Submission
- Created `/contact/submit/` endpoint in `main/views.py`
- Accepts JSON POST requests
- Automatically encrypts all form data before saving
- Captures IP address for security tracking
- Returns JSON response with success/error status

### 3. Designer Alert System
- Custom animated alert notifications (no external libraries needed)
- Success alert: Green with checkmark icon
- Error alert: Red with exclamation icon
- Features:
  - Smooth slide-in animation from right
  - Auto-dismiss after 5 seconds
  - Manual close button
  - Fully responsive (mobile-friendly)
  - Modern glassmorphism design

### 4. Admin Interface
- Contact submissions viewable in Django admin
- Displays decrypted information securely
- Shows submission timestamp and IP address
- Mark as read/unread functionality
- Cannot add contacts through admin (form-only)

## Files Modified/Created

### Created:
1. `main/models.py` - Contact model with encryption
2. `main/migrations/0001_initial.py` - Database migration
3. `CONTACT_FORM_ENCRYPTION.md` - This documentation

### Modified:
1. `main/views.py` - Added submit_contact view
2. `main/urls.py` - Added contact submission endpoint
3. `main/admin.py` - Added Contact admin interface
4. `templates/index_clean.html` - Updated form submission JavaScript and added alert CSS

## Security Features

### Encryption
- Uses Fernet (symmetric encryption) from cryptography library
- Encryption key derived from Django SECRET_KEY using SHA-256
- All sensitive data encrypted at rest in database
- Data only decrypted when needed for display

### Additional Security
- CSRF protection enabled
- IP address logging for audit trail
- JSON-only API endpoint
- No sensitive data in URLs or logs

## How It Works

### Form Submission Flow:
1. User fills out contact form on homepage
2. JavaScript captures form data and sends POST request to `/contact/submit/`
3. Django view receives data and creates Contact instance
4. All sensitive fields are encrypted using setter methods
5. Contact saved to database with encrypted data
6. Success response sent back to frontend
7. Designer alert displayed to user
8. Form automatically resets

### Viewing Submissions:
1. Admin logs into Django admin panel
2. Navigates to "Contact Submissions"
3. Data is automatically decrypted for viewing
4. Can mark submissions as read/unread
5. Can view full details including IP address

## Testing

### Test the Contact Form:
1. Visit http://127.0.0.1:8000/
2. Scroll to the Contact section
3. Fill out the form with test data
4. Click "Send Message"
5. You should see a green success alert slide in from the right
6. Form should reset automatically

### Verify Encryption:
1. Submit a contact form
2. Open Django admin: http://127.0.0.1:8000/admin/
3. Go to "Contact Submissions"
4. Click on a submission to view decrypted data
5. Check database directly to see encrypted data:
   ```bash
   python manage.py dbshell
   SELECT * FROM main_contact;
   ```
   You'll see binary encrypted data in the database

## API Endpoint

### POST /contact/submit/
**Request Body:**
```json
{
    "firstName": "John",
    "lastName": "Doe",
    "email": "john@example.com",
    "phone": "+1234567890",
    "subject": "visa-consultation",
    "message": "I need help with my visa application"
}
```

**Success Response:**
```json
{
    "success": true,
    "message": "Thank you! Your message has been sent successfully. We will get back to you soon."
}
```

**Error Response:**
```json
{
    "success": false,
    "message": "An error occurred: [error details]"
}
```

## Dependencies
- `cryptography` - For Fernet encryption (already installed)
- Django's built-in CSRF protection
- No external JavaScript libraries needed

## Customization

### Change Alert Duration:
In `templates/index_clean.html`, find:
```javascript
setTimeout(() => {
    alertDiv.classList.remove('show');
    setTimeout(() => alertDiv.remove(), 300);
}, 5000); // Change 5000 to desired milliseconds
```

### Change Alert Colors:
In the CSS section, modify:
```css
.success-alert .alert-content {
    border-left-color: #10b981; /* Change this color */
}
```

### Change Encryption Algorithm:
In `main/models.py`, modify the `get_cipher()` method to use a different encryption method.

## Security Best Practices

1. **Never commit SECRET_KEY** - Keep it in environment variables
2. **Use HTTPS in production** - Encrypt data in transit
3. **Regular backups** - Encrypted data can't be recovered if key is lost
4. **Access control** - Limit who can view contact submissions
5. **Audit logs** - Monitor access to sensitive data

## Status
✅ Contact form with encryption implemented
✅ Designer alert system working
✅ Database migrations applied
✅ Admin interface configured
✅ All security features enabled
✅ Fully responsive design
