Implement Premium Product (Plugin/Theme) Detection and Backup System

[DevinWalker]

Overview

Create a unified system to detect and manage premium WordPress products (plugins and themes), handle their updates, and manage backups of premium versions. This system will integrate with the backup storage system and handle both plugins and themes through a common interface while accounting for product-specific requirements.

Requirements

Premium Product Detection

• Implement detection of non-WordPress.org products
• Create unified premium product identifier class
• Handle various update systems:
  • Custom update APIs
  • License-based updates
  • Third-party services (Easy Digital Downloads, Freemius, ThemeForest/Envato, etc.)
  • Theme clubs (Elegant Themes, etc.)
  • Direct updates
• Store product metadata (source, update URL, version history, product type)

Update Process Integration

• Hook into WordPress update processes for both plugins and themes
• Intercept premium product updates
• Capture current version before update
• Store product metadata with backup
• Handle failed update scenarios
• Implement rollback triggers

Backup Management

class WP_Rollback_Pro_Product_Manager {
    // Initialize product detection
    public function init()
    
    // Check if product is premium
    public function is_premium_product($product_id, $type)
    
    // Get product source type
    public function get_product_source($product_id, $type)
    
    // Pre-update backup trigger
    public function backup_before_update($product_id, $type, $version)
    
    // Store product metadata
    public function store_product_metadata($product_id, $type)
    
    // Get available versions
    public function get_available_versions($product_id, $type)
    
    // Trigger rollback
    public function do_product_rollback($product_id, $type, $version)
    
    // Validate rollback version
    public function validate_rollback_version($product_id, $type, $version)
}

class WP_Rollback_Pro_Product_Backup {
    // Create backup of current version
    public function create_backup($product_id, $type)
    
    // Get product directory size
    public function get_product_size($product_id, $type)
    
    // Create product zip
    public function create_zip($product_id, $type)
    
    // Store product backup
    public function store_backup($zip_file, $product_id, $type, $version)
    
    // Handle special cases (child themes, plugin dependencies)
    public function handle_special_cases($product_id, $type)
}

Product-Specific Handlers

• Theme-specific functionality:
  • Parent/child theme relationships
  • Theme customizer settings
  • Theme modification backups
• Plugin-specific functionality:
  • Plugin dependencies
  • Network-activated plugins
  • Must-use plugins

UI/UX Elements

• Add premium product indicators in both plugin and theme lists
• Modify rollback button behavior for premium products
• Add version history display
• Implement backup status indicators
• Add manual backup triggers
• Add appropriate warnings/notifications (child themes, dependencies)

Technical Considerations

• Handle large files (especially page builders and complex plugins)
• Manage product dependencies
• Handle license validation
• Consider memory limits during zip creation
• Implement proper error handling
• Consider multisite implications
• Handle product-specific settings
• Use abstract factory pattern for product type handling
• Implement proper interfaces for product types

Testing Requirements

1. Premium product detection accuracy
2. Update process integration
3. Backup creation and storage
4. Version management
5. Rollback functionality
6. Special case handling (child themes, dependencies)
7. Settings preservation
8. Error handling
9. UI elements
10. Multisite compatibility

Definition of Done

• Premium product detection working for both plugins and themes
• Update process successfully intercepted for both types
• Backups created and stored correctly
• Version management implemented
• Special case handling working
• UI elements added and functioning
• All tests passing
• Documentation completed
• Code review completed

Related

• Parent Epic: Pro Plugin and Theme Rollback Implementation
• Dependency: Basic Backup Storage System
• Future Issue: Remote Storage Integration
• Future Issue: Automatic Backup System

Notes for Developer

• Use WordPress plugin and theme API hooks
• Implement proper nonce checking
• Add appropriate error messages
• Consider adding filters for custom premium product detection
• Document all hooks and filters
• Add debug logging for troubleshooting
• Use inheritance and interfaces for clean code organization
• Implement factory pattern for product type handling