flutter_thermal_printer

Major Refactoring & Code Quality Improvements

• Fixed all linting and static analysis issues across the project.
• Improved null safety and type safety in Printer and PrinterManager.
• Refactored Printer class to correctly handle name overrides and data sanitization.
• Fixed Windows stub implementation for better cross-platform compatibility.

Documentation

• Added comprehensive DartDoc comments for all public methods in FlutterThermalPrinter and PrinterManager.
• Documented all parameters including chunkSize, connectionStabilizationDelay, and others.

Testing

• Fixed and updated unit tests to ensure reliability Thanks to @LosDanieloss.
• Verified behavior of Printer class serialization and initialization.

Enhanced Memory Management

• Proper stream lifecycle management with automatic cleanup
• Improved resource disposal in disconnect operations
• Optimized singleton pattern for thread safety
• Better garbage collection patterns

Image Processing Improvements

• Dynamic chunked image processing for better memory efficiency
• Improved image validation with comprehensive error handling
• Optimized image resizing algorithms
• Better support for varying image dimensions

Network Printer Enhancements

• Automatic connection validation and reconnection
• Improved socket error handling with specific exception types
• Better connection state management
• Enhanced timeout handling

Code Architecture Improvements

• Immutable Printer model with validation methods
• Separated concerns into focused, testable methods
• Enhanced error handling with meaningful messages
• Comprehensive documentation and type safety

Platform-Specific Optimizations

• Windows: Enhanced BLE initialization with proper error handling
• Android/iOS: Optimized BLE scanning with better subscription management
• All Platforms: Improved USB printer detection and management

New Features

• copyWith() method for immutable Printer updates
• uniqueId property for better printer identification
• hasValidConnectionData validation method
• Enhanced connection type validation
• Comprehensive toString() and equality implementations

Breaking Changes

• Printer class fields are now final (immutable)
• Use copyWith() for printer updates instead of direct field assignment
• Some internal method signatures have changed for better error handling

Developer Experience

• Added OPTIMIZATION_GUIDE.md with detailed optimization explanations
• Enhanced analysis_options.yaml with strict linting rules
• Improved error messages for better debugging
• Better type safety throughout the codebase