Implement Basic Backup Storage System for Premium Products

[DevinWalker]

Overview

Create a secure and efficient storage system for premium plugin and theme backups, including directory structure, file management, and basic encryption.

Requirements

Directory Structure

• Create a base backup directory (e.g., wp-content/wp-rollback-pro-backups/)
• Implement separate subdirectories for plugins and themes
• Create version-specific directories within each product directory
• Ensure proper directory permissions (0755)
• Add appropriate .htaccess protection for backup directories

File Management

• Implement backup filename standardization (e.g., {slug}-{version}-{timestamp}.zip)
• Create backup file handler class
• Implement maximum backup limit enforcement
• Add cleanup routine for old backups
• Implement file size checking before backup creation
• Add disk space monitoring

Security Implementation

• Add basic zip file encryption
• Implement encryption key management
• Store encryption keys securely in WordPress
• Add file integrity checking
• Implement secure file deletion methods

Core Functions Needed

class WP_Rollback_Pro_Storage {
    // Initialize storage system
    public function init_storage()
    
    // Create backup directories
    public function create_backup_directories()
    
    // Verify directory structure
    public function verify_directories()
    
    // Store backup file
    public function store_backup($file, $product_type, $product_slug, $version)
    
    // Retrieve backup file
    public function get_backup($product_type, $product_slug, $version)
    
    // Delete backup file
    public function delete_backup($product_type, $product_slug, $version)
    
    // Cleanup old backups
    public function cleanup_old_backups($product_type, $product_slug, $max_backups)
    
    // Check available space
    public function check_available_space()
    
    // Encrypt backup file
    private function encrypt_backup($file)
    
    // Decrypt backup file
    private function decrypt_backup($file)
}

Technical Considerations

• Handle multisite installations appropriately
• Implement proper error handling and logging
• Consider hosting environment variations
• Handle large file uploads efficiently
• Implement proper filesystem checks

Testing Requirements

1. Directory creation and permissions
2. File storage and retrieval
3. Encryption and decryption
4. Cleanup functionality
5. Error handling
6. Space management
7. Multisite compatibility

Definition of Done

• Backup directory structure created and secured
• File management system implemented
• Basic encryption system working
• Cleanup routine functioning
• All tests passing
• Documentation completed
• Code review completed

Related

• Parent Epic: Pro Plugin and Theme Rollback Implementation
• Future Issue: Remote Storage Integration
• Future Issue: Enhanced Security Implementation

Notes for Developer

• Use WordPress filesystem functions for file operations
• Follow WordPress coding standards
• Document all functions and classes
• Add appropriate hooks for extensibility
• Consider using WordPress transients for temporary storage