# Bidda School Management System - Project Cleanup Summary

## Overview
This project has been cleaned up and secured with the following improvements:

## 🔒 Security Improvements

### 1. Environment Configuration
- Created `.env.example` for secure credential management
- Created `config/EnvLoader.php` to load environment variables
- Updated `config/database.php` to use environment variables
- **IMPORTANT**: Copy `.env.example` to `.env` and update with your credentials

### 2. Security Helper
- Created `includes/SecurityHelper.php` with:
  - CSRF token generation and validation
  - Input sanitization functions
  - Password strength validation
  - Rate limiting
  - Security event logging
  - Role-based access control

### 3. Enhanced .htaccess
- Added security headers (CSP, HSTS, X-Frame-Options, etc.)
- Protected sensitive files (.env, .sql, .log, config files)
- Disabled directory browsing
- Added compression and caching

## 📁 Project Structure Cleanup

### Files Organized (408 files moved)
- **test_*.php** (171 files) → `dev_tools/test_files/`
- **debug_*.php** (57 files) → `dev_tools/debug_files/`
- **check_*.php** (95 files) → `dev_tools/check_files/`
- **fix_*.php** (52 files) → `dev_tools/fix_files/`
- **verify_*.php** (21 files) → `dev_tools/fix_files/`
- **diagnose_*.php** (8 files) → `dev_tools/fix_files/`
- **.bak, .old, .backup** (4 files) → `dev_tools/backup_files/`

### New Directory Structure
```
bidda/
├── .env.example              # Environment configuration template
├── .htaccess                 # Enhanced security configuration
├── config/
│   ├── database.php          # Updated with EnvLoader
│   └── EnvLoader.php         # Environment variable loader
├── includes/
│   └── SecurityHelper.php    # Security utilities
├── dev_tools/                # Development files (not for production)
│   ├── test_files/
│   ├── debug_files/
│   ├── check_files/
│   ├── fix_files/
│   └── backup_files/
└── [other directories...]
```

## ⚠️ Important Security Notes

1. **NEVER commit .env file to git** - it contains sensitive credentials
2. **Change default passwords** - Update database password and admin password
3. **Generate app keys** - Update APP_KEY and JWT_SECRET in .env
4. **Enable HTTPS** - Uncomment HTTPS redirect in .htaccess for production

## 🔧 Next Steps

### For Production Deployment:

1. **Copy environment file**:
   ```bash
   cp .env.example .env
   ```

2. **Update credentials in .env**:
   - Change database password
   - Set strong APP_KEY and JWT_SECRET
   - Configure SMS API keys
   - Set production URLs

3. **Secure the server**:
   - Enable HTTPS/SSL
   - Set proper file permissions (644 for PHP, 755 for directories)
   - Remove dev_tools directory from production
   - Configure firewall rules

4. **Database security**:
   - Create a dedicated database user (not root)
   - Restrict database user permissions
   - Enable MySQL SSL if possible

5. **Application security**:
   - Change default admin password
   - Enable two-factor authentication
   - Set up regular backups
   - Configure security monitoring

## 🛡️ CSRF Protection Usage

Add CSRF tokens to all forms:

```php
<?php require_once 'config/database.php'; ?>
<form method="POST" action="process.php">
    <?php echo csrf_field(); ?>
    <!-- form fields -->
</form>
```

Validate on form processing:
```php
<?php
require_once 'config/database.php';
SecurityHelper::validatePost(); // This will die if invalid

// Process form data...
?>
```

## 📚 Role-Based Access

```php
<?php
require_once 'config/database.php';
require_once 'includes/SecurityHelper.php';

// Check if user is logged in
require_auth();

// Check specific role
require_role('admin');        // Admin only
require_role('teacher');      // Teacher or Admin
require_role('student');      // Student, Teacher, or Admin
?>
```

## 📊 Cleanup Statistics

- **Total files organized**: 408
- **Root directory files before**: 742+
- **Root directory files after**: ~334
- **Debug/test files moved**: 408
- **Security improvements**: 5 major areas
- **Configuration files created**: 3

## 🎯 Features Secured

- Database credentials
- CSRF protection
- Input sanitization
- Password validation
- Rate limiting
- Security headers
- File upload restrictions
- Session security

---

**Last Updated**: February 3, 2026
**Cleanup Version**: 1.0
