Development Checklist Pre-Development Planning ✅ Requirements Analysis [ ] Define module purpose and functionality [ ] Identify target user groups (admin/client) [ ] List required external API integrations [ ] Document service lifecycle requirements [ ] Define data storage requirements [ ] Specify security and compliance requirements ✅ Architecture Design [ ] Choose appropriate module type (Product/Plugin/Payment/Notification) [ ] Design database schema [ ] Plan API integration points [ ] Define error handling strategy [ ] Design logging and monitoring approach Development Phase ✅ Module Structure Setup modules/{Type}/{ModuleName}/ ├── [ ] {ModuleName}.php # Main module class ├── [ ] config.php # Configuration file ├── [ ] hooks.php # Event hooks (optional) ├── Controllers/ │ └── [ ] {ModuleName}Controller.php ├── Models/ │ └── [ ] {ModuleName}.php ├── Services/ # API clients, business logic │ └── [ ] ExternalAPIClient.php ├── views/ │ ├── admin_area/ │ │ ├── [ ] product.blade.php │ │ └── [ ] service.blade.php │ └── client_area/ │ └── [ ] general.blade.php └── lang/ ├── [ ] en.php └── [ ] pl.php ✅ Core Module Implementation Main Module Class [ ] Class extends appropriate parent (Product/Plugin/Payment/Notification) [ ] Constructor calls parent::__construct() [ ] All required methods implemented [ ] Proper error handling in all methods [ ] Comprehensive logging implemented Lifecycle Methods [ ] activate() - Creates database tables, initial setup [ ] deactivate() - Cleans up resources [ ] update() - Handles version migrations Product Module Specific [ ] getProductData() - Processes product configuration [ ] saveProductData() - Validates and saves product config [ ] getProductPage() - Returns admin product configuration HTML [ ] getServiceData() - Processes service instance data [ ] saveServiceData() - Validates and saves service config [ ] getServicePage() - Returns admin service configuration HTML Service Lifecycle (Product Modules) [ ] create() - Queues service creation job using correct Task::add() pattern [ ] createJob() - Actual service creation logic executed asynchronously [ ] suspend() - Queues service suspension job (optional - implement if needed) [ ] suspendJob() - Actual service suspension logic (optional - implement if needed) [ ] unsuspend() - Queues service reactivation job (optional - implement if needed) [ ] unsuspendJob() - Actual service reactivation logic (optional - implement if needed) [ ] termination() - Queues service termination job (optional - implement if needed) [ ] terminationJob() - Actual service termination logic (optional - implement if needed) ✅ Admin Interface Permissions [ ] adminPermissions() returns proper permission definitions [ ] All permissions have descriptive names and keys [ ] Permission keys follow naming convention Navigation [ ] adminSidebar() returns navigation menu items [ ] All menu items have required permissions [ ] Menu links point to valid routes Routes [ ] adminWebRoutes() defines all web routes [ ] adminApiRoutes() defines all API routes [ ] All routes have proper permissions [ ] Route names are unique and descriptive Controllers [ ] Controllers extend Laravel Controller class [ ] All controller methods are public [ ] Web methods return View objects [ ] API methods return JsonResponse objects [ ] Proper input validation implemented [ ] Error handling implemented ✅ Client Area (Product Modules) Configuration [ ] getClientAreaMenuConfig() returns menu tabs [ ] Each tab has name and template path [ ] Template files exist for all tabs Variables [ ] variables_{tab_name}() methods exist for all tabs [ ] Methods return appropriate data arrays AJAX Controllers [ ] controllerClient_{tab_name}Get() methods implemented for AJAX requests [ ] controllerClient_{tab_name}Post() methods implemented if needed [ ] Methods handle requests appropriately and return JsonResponse [ ] Proper error handling and validation in AJAX methods ✅ Database Design Tables [ ] Proper table naming convention used [ ] Primary keys defined appropriately [ ] Foreign keys reference correct tables [ ] Indexes added for frequently queried columns [ ] JSON columns used for flexible data storage [ ] Enum fields for status tracking Migrations [ ] activate() creates all necessary tables [ ] deactivate() properly cleans up tables [ ] update() handles schema changes between versions [ ] Foreign key constraints properly handled ✅ API Integration External API Client [ ] GuzzleHttp Client properly configured (timeouts, base_uri, headers) [ ] Authentication implemented correctly (Bearer token, API key, etc.) [ ] Retry logic implemented for failed requests with exponential backoff [ ] Rate limiting considerations implemented [ ] Error handling for different HTTP response codes [ ] API credentials stored in environment variables, not hardcoded Security [ ] API credentials stored securely (environment variables) [ ] Sensitive data encrypted before storage [ ] Input sanitization implemented [ ] Output escaping for user-facing data ✅ Validation & Security Input Validation [ ] All user inputs validated using Laravel Validator [ ] Custom validation rules for business logic [ ] Proper error messages in multiple languages [ ] XSS prevention implemented [ ] SQL injection prevention through proper ORM usage Security Measures [ ] Permission checks in all controller methods [ ] CSRF protection for forms [ ] Rate limiting for API endpoints [ ] Secure password generation and storage ✅ Error Handling & Logging Error Handling [ ] Try-catch blocks around all external API calls and database operations [ ] Graceful degradation for failed operations [ ] User-friendly error messages (no technical details exposed to users) [ ] Proper HTTP status codes returned (200, 422, 500, etc.) [ ] Service status properly updated on failures (setProvisionStatus('failed')) Logging [ ] $this->logInfo() for successful operations with context [ ] $this->logError() for failed operations with error details [ ] $this->logDebug() for development debugging (not in production) [ ] Structured logging with service_uuid, action, and relevant data [ ] No sensitive data logged (passwords, API keys, personal data) ✅ Performance Optimization Caching [ ] Expensive API calls cached with Cache::remember() [ ] Cache keys use module-specific prefixes [ ] Cache invalidation strategy implemented [ ] Cache TTL set appropriately (typically 5-30 minutes for API data) Database [ ] N+1 query problems avoided using eager loading (with()) [ ] Appropriate indexes created on foreign keys and frequently queried columns [ ] Large datasets processed in chunks using chunk() method [ ] Database transactions used for related operations (DB::transaction()) [ ] Bulk inserts used instead of multiple single inserts Memory Management [ ] Memory usage monitored for large operations [ ] Large arrays/objects unset when no longer needed [ ] Streaming used for large file operations Testing Phase ✅ Unit Testing [ ] Tests for all core methods [ ] Validation logic tested [ ] Error handling tested [ ] Mock external dependencies ✅ Integration Testing [ ] Full service lifecycle tested [ ] API integration tested with real/mock services [ ] Database operations tested [ ] Queue job processing tested ✅ Manual Testing [ ] Admin interface navigation works [ ] Product/service configuration saves correctly [ ] Client area displays properly [ ] Service operations work end-to-end [ ] Error scenarios handled gracefully ✅ Performance Testing [ ] Load testing for API endpoints [ ] Memory usage profiling [ ] Database query optimization [ ] Cache effectiveness measurement Pre-Deployment Checklist ✅ Configuration [ ] config.php contains all required metadata [ ] Version number updated [ ] Environment-specific settings configured [ ] API credentials configured in environment ✅ Documentation [ ] README with installation instructions [ ] Configuration guide [ ] API documentation (if applicable) [ ] Troubleshooting guide ✅ Security Review [ ] Code review completed [ ] Security vulnerabilities addressed [ ] Penetration testing performed (for complex modules) [ ] Compliance requirements met ✅ Deployment Preparation [ ] Database backup procedures documented [ ] Rollback plan prepared [ ] Monitoring alerts configured [ ] Performance baselines established Post-Deployment ✅ Monitoring [ ] Module logs monitored for errors [ ] Performance metrics tracked [ ] User feedback collected [ ] Error rates within acceptable limits ✅ Maintenance [ ] Regular security updates applied [ ] Performance optimizations implemented [ ] Bug fixes deployed promptly [ ] Documentation kept up-to-date Code Quality Standards ✅ PHP Standards [ ] PSR-12 coding standards followed [ ] Type hints used where applicable [ ] Proper namespacing implemented [ ] DocBlocks for all public methods ✅ Laravel Best Practices [ ] Eloquent ORM used for database operations [ ] Service container used for dependency injection [ ] Facades used appropriately [ ] Events and listeners used for decoupling ✅ Module-Specific Standards [ ] Consistent error response format [ ] Standardized logging format [ ] Common validation patterns used [ ] Consistent naming conventions Version Control ✅ Git Practices [ ] Meaningful commit messages [ ] Feature branches used for development [ ] Code reviewed before merging [ ] Version tags created for releases ✅ Release Management [ ] CHANGELOG.md maintained [ ] Semantic versioning followed [ ] Breaking changes documented [ ] Migration guides provided Common Pitfalls to Avoid ❌ Don't Do This [ ] ❌ Store API keys in code or config files (use .env variables) [ ] ❌ Skip input validation "for internal use" [ ] ❌ Use direct SQL queries instead of Eloquent ORM or Query Builder [ ] ❌ Ignore error handling in background jobs (always try-catch) [ ] ❌ Log sensitive information (passwords, API keys, personal data) [ ] ❌ Skip database indexes for frequently queried columns [ ] ❌ Use synchronous operations for long-running tasks (use Task::add()) [ ] ❌ Hardcode configuration values (use config() method) [ ] ❌ Skip permission checks in controllers [ ] ❌ Ignore rate limiting for external APIs [ ] ❌ Use non-existent methods like queueTask() (use Task::add() directly) [ ] ❌ Use incorrect Task::add() parameters (no 'uuid' parameter needed) [ ] ❌ Call non-existent helper methods like getJobParameter() ✅ Best Practices [ ] ✅ Use environment variables for sensitive configuration (.env file) [ ] ✅ Validate all inputs with Laravel Validator rules [ ] ✅ Use Laravel's built-in security features (CSRF, XSS protection) [ ] ✅ Implement comprehensive error handling with try-catch blocks [ ] ✅ Use structured logging with context (service_uuid, action, data) [ ] ✅ Optimize database queries and add indexes on foreign keys [ ] ✅ Use Task::add('ModuleJob', 'Module', $data, $tags) with correct parameters [ ] ✅ Make configuration flexible using config.php and .env [ ] ✅ Implement proper authorization checks in all controller methods [ ] ✅ Handle external service failures gracefully with retries [ ] ✅ Follow the real API methods from actual module classes [ ] ✅ Use correct Task::add() parameters: $data must contain 'module' and 'method' only, no 'uuid' [ ] ✅ Always call setProvisionStatus('processing') before queueing tasks [ ] ✅ Store service data using setProvisionData() method Remember: A well-designed module is secure, performant, maintainable, and provides excellent user experience. Take time to plan, implement best practices, and thoroughly test before deployment.