Refactor Interop Files

[yagizhanyakali]

💡 What is the current behavior?

The current JavaScript and C# interop classes contain significant code duplication and inconsistent patterns:

JavaScript Issues:

• Inconsistent error handling across interop files
• Missing input validation for parameters
• Repeated utility functions across multiple files
• Inconsistent error messages and catch block handling
• Missing documentation (JSDoc comments)
• Some files had bugs (incorrect error variable names, mismatched function names)

C# Issues:

• JavaScript interop classes (BaseInterop.cs, FileUploadInterop.cs, TabsInterop.cs) contain repeated patterns for module loading, disposal, validation, and error handling
• Each interop class implements the same boilerplate code (~100-150 lines per class)
• Inconsistent error handling and exception patterns
• Resource management duplication across classes

This leads to:

• Code duplication: ~590 lines of repeated C# infrastructure code + duplicated JS utilities
• Maintenance burden: Changes require updates across multiple files
• Inconsistent behavior: Slight variations in error handling and validation
• Bugs: Some JS files had incorrect error handling and function name mismatches

🆕 What is the new behavior?

JavaScript Improvements:

• Refactored all JavaScript interop files with consistent error handling, input validation, and documentation
• Added comprehensive JSDoc documentation for all exported functions
• Implemented modular utility functions for validation, element lookup, and JSON parsing
• Fixed bugs including incorrect error variable usage and mismatched function names
• Enhanced index.js with improved AG Grid and ECharts integration safety
• Consistent error handling with descriptive error messages across all files

C# Improvements:

• Created BaseJSInterop abstract base class that centralizes all common JavaScript interop functionality
• Refactored all interop classes to inherit from BaseJSInterop, eliminating code duplication
• Implemented shared infrastructure methods for module loading, disposal, validation, and JavaScript invocation
• Added automatic DotNetObjectReference management with proper disposal patterns
• Standardized error handling with consistent exception messages and context

Files refactored:

JavaScript files:

• categoryFilterInterop.js - Added validation, error handling, and documentation
• baseJsInterop.js - Enhanced error handling and input validation
• applicationInterop.js - Improved error handling and validation
• aboutMenuInterop.js - Added comprehensive error handling and validation
• dateDropdownInterop.js - Enhanced with validation and documentation
• fileUploadInterop.js - Improved error handling and input validation
• settingsMenuInterop.js - Added validation and consistent error handling
• sliderInterop.js - Enhanced error handling and documentation
• tabsInterop.js - Improved validation and error handling
• treeInterop.js - Added comprehensive error handling and validation
• index.js - Enhanced AG Grid and ECharts integration with safety improvements

C# files:

• FileUploadInterop.cs: Reduced from 184 to 72 lines (61% reduction)
• TabsInterop.cs: Reduced from 226 to 68 lines (70% reduction)
• BaseInterop.cs: Reduced from ~180 to ~80 lines (56% reduction)
• Added: BaseJSInterop.cs - New shared base class (268 lines of reusable infrastructure)

Key improvements:

• Zero breaking changes: All public APIs remain exactly the same
• Enhanced reliability: Comprehensive input validation and error handling
• Better maintainability: Shared patterns and consistent code structure
• Bug fixes: Resolved JS error handling bugs and function name mismatches
• Improved documentation: JSDoc comments and XML documentation
• Consistent error messages: Unified error reporting across all interop files

Please don't merge this PR without proper testing!

🏁 Checklist

A pull request can only be merged if all of these conditions are met (where applicable):

• 🦮 Accessibility (a11y) features were implemented
• 🗺️ Internationalization (i18n) - no hard coded strings
• 📲 Responsiveness - components handle viewport changes and content overflow gracefully
• 📄 Documentation was reviewed/updated
• 🧪 Unit tests were added/updated and pass (dotnet test)
• 🏗️ Successful compilation (dotnet build, changes pushed)

👨‍💻 Help & support

[yagizhanyakali]

Please don't merge this PR without proper testing!