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top_drives/CHANGELOG.md
Jan-Peter von Hunnius 89fa69e3c8 refactor: extract lib.rs, remove club module, add bounded concurrency 
- Extract shared types (Car, BestCarRecord, AnalysisContext) into src/lib.rs
- Replace global static BEST_CARS with injected AnalysisContext for testability
- Add semaphore-bounded concurrency (limit 20) in parse_all_times()
- Replace hardcoded track name match with track_names.json loaded via include_str!
- Replace magic number 115 with const MAX_RQ: u8 = 113
- Improve floating-point tie comparison with TIME_TOLERANCE (5ms) constant
- Remove src/club.rs binary (topdrives.club no longer maintained)
- Remove scraper dependency from Cargo.toml
- Remove tracks.txt (replaced by track_names.json)
- Remove empty/placeholder test bodies
- Improve error handling in get_file() for response body read
- Add load_my_cars_data() combining owned + wishlist extraction in one I/O
- Update CHANGELOG, README, and all docs to reflect changes
2026-05-06 20:20:15 +02:00

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Changelog

All notable changes to the Top Drives Records Analyzer project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

Added

  • Comprehensive documentation suite in docs/ directory
  • Detailed code comments for all public functions
  • Architecture documentation explaining system design
  • User guide with command examples and troubleshooting
  • Data structures documentation for JSON formats
  • Development setup guide with dependency explanations
  • track_names.json — external config file mapping track codes to human-readable names (loaded at compile time via include_str!)
  • full_script command for running fetch + all analysis commands in sequence
  • Daily workflow documentation with output file descriptions (best.csv, details.csv, add.csv, remove.csv, trash.csv, sorted.csv, very_best.csv, wishlist.csv)

Changed

  • translate_track_name() in lib.rs now loads track name mappings from track_names.json instead of a hardcoded match statement
  • Magic number 115 replaced with const MAX_RQ: u8 = 113 in records.rs for clarity and maintainability
  • parse_all_times() now uses a semaphore (limit 20) for bounded concurrency instead of unbounded task spawning
  • Empty test bodies removed from records.rs
  • Enhanced error handling throughout the application
  • Better progress reporting during data fetching
  • More descriptive command-line help text
  • Improved CSV output formatting

Removed

  • Club Module: Removed src/club.rs binary (topdrives.club is no longer maintained)
  • scraper dependency: Removed scraper crate from Cargo.toml (was only used by club module)
  • tracks.txt: Removed track definitions file (only used by club binary)
  • Club module Car struct (separate struct with class, upgrade fields)

[0.2.0] - 2024-12-XX

Added

  • Track-Specific Analysis: New track command for targeted recommendations
  • Enhanced Output: CSV file generation for analysis results
  • Improved Concurrency: Better handling of multiple simultaneous downloads
  • Rate Limiting: Configurable download limits to respect server constraints

Changed

  • Modular Architecture: Split functionality into separate binary targets
  • Error Handling: More graceful handling of network and parsing errors
  • Configuration: Externalized track and car data sources
  • Performance: Optimized memory usage for large datasets

Fixed

  • Memory Leaks: Fixed issues with async task cleanup
  • File Handle Management: Proper cleanup of temporary files
  • Network Timeouts: Better handling of slow or unreliable connections

[0.1.0] - 2024-01-XX

Added

  • Initial Release: Core functionality for Top Drives car analysis
  • Best Cars Analysis: Identify top performing cars in collection
  • Missing Cars Detection: Find cars that would improve performance
  • Collection Optimization: Identify cars safe to remove
  • Detailed Performance Data: Comprehensive timing analysis
  • JSON Data Processing: Parse community timing database
  • Concurrent Processing: Multi-threaded analysis for performance

Features

  • Multi-Platform Support: Windows, macOS, and Linux compatibility
  • Comprehensive Track Support: All tracks and surface conditions
  • RQ Range Analysis: Performance analysis across rarity brackets
  • User Collection Integration: Import and analyze personal car collection
  • Community Data Integration: Leverage crowd-sourced timing data

Technical Features by Version

Data Processing

  • [0.1.0] Basic JSON parsing and analysis
  • [0.2.0] Enhanced error handling and data validation
  • [Unreleased] Track name mappings externalized to track_names.json

Performance

  • [0.1.0] Single-threaded processing
  • [0.2.0] Concurrent downloads with rate limiting
  • [Unreleased] Bounded concurrency via semaphore (limit 20); MAX_RQ constant replaces magic number

User Interface

  • [0.1.0] Basic command-line interface
  • [0.2.0] Enhanced output formatting and CSV export
  • [Unreleased] full_script command for complete daily workflow

Data Sources

  • [0.1.0] JSON-based records from community repository
  • [0.2.0] Added HTML scraping from topdrives.club
  • [Unreleased] Removed club scraping (topdrives.club no longer maintained)

Migration Guide

Upgrading to Unreleased from 0.2.0

Breaking Changes:

  1. Club module removed: cargo run --bin club is no longer available
  2. scraper dependency removed: No longer needed without club module
  3. tracks.txt removed: Track names now in track_names.json
  4. translate_track_name() changed: Now loads from track_names.json instead of hardcoded match
  5. Magic number 115 → MAX_RQ (113): RQ range analysis now uses MAX_RQ = 113 constant

New Features Available:

  1. full_script command: Run fetch + all analysis in one command
  2. Additional output files: add.csv, remove.csv, sorted.csv, very_best.csv, wishlist.csv
  3. External track name config: track_names.json can be updated without code changes

Upgrading from 0.1.0 to 0.2.0

No breaking changes - the upgrade is fully backwards compatible.

New Features Available:

  1. Track Command: Specific track analysis with cargo run --bin records -- track
  2. CSV Output: Automatic generation of analysis files

Performance Improvements:

  • Faster data fetching with concurrent downloads
  • Better memory usage for large datasets
  • Improved error recovery

Deprecation Notices

Removed in Unreleased

  • Club Module: src/club.rs and cargo run --bin club — topdrives.club is no longer maintained
  • scraper dependency: Removed from Cargo.toml
  • tracks.txt: Replaced by track_names.json

Deprecated Features

  • None currently deprecated

Community Contributions

Notable Contributions

  • Community Timing Data: All performance data from Top Drives community
  • Track Definitions: Comprehensive track database
  • Bug Reports: User feedback for improvements

Contribution Statistics

  • Timing Submissions: 1000+ cars with community data
  • Track Coverage: 200+ tracks across all conditions
  • Active Contributors: Community-driven development

Performance Benchmarks

Data Processing Speed

  • Initial Load: ~2-3 minutes (downloads 1000+ files)
  • Subsequent Runs: <30 seconds (uses cached data)
  • Concurrent Operations: 20 simultaneous downloads (semaphore bounded)

Memory Usage

  • Base Application: ~50MB
  • With Full Dataset: ~200MB
  • Peak During Processing: ~300MB

Network Efficiency

  • Compression: Efficient HTTP compression
  • Connection Reuse: Persistent HTTP connections
  • Rate Limiting: Semaphore-bounded concurrency (limit 20)

Known Issues and Limitations

Current Limitations

  • Data Freshness: Requires manual refresh for latest community data
  • Network Dependency: Requires internet for initial data download
  • Storage Requirements: Large local dataset (~100MB)
  • Single User: Designed for individual use, not multi-user

Platform-Specific Issues

  • Windows: Potential path length limitations with many files
  • macOS: Gatekeeper may flag the binary (code-signed in releases)
  • Linux: No known issues

Future Roadmap

Planned Features (Unreleased)

  • Historical Analysis: Track performance changes over time
  • Advanced Analytics: Statistical analysis and trend detection

Potential Enhancements

  • Real-time Updates: Live data synchronization
  • Customization: User-defined analysis parameters
  • Export Options: Multiple file formats (PDF, Excel)

Support Information

Getting Help

  1. Documentation: Check docs/ directory for comprehensive guides
  2. Issue Tracker: Report bugs and request features
  3. Discussions: Community forum for questions and tips

Troubleshooting Resources

  • User Guide: Step-by-step instructions and examples
  • Development Setup: Technical installation guide
  • Data Structures: Detailed format documentation
  • Architecture Guide: System design and data flow

Acknowledgments

Contributors

  • Original Author: Project creator and maintainer
  • Community Contributors: Timing data providers and testers
  • Open Source Projects: Rust ecosystem and tooling

Data Sources

  • Top Drives Community: Primary timing data source
  • GitHub Contributors: Track and car database maintenance

Changelog Format: Follows Keep a Changelog format Versioning: Follows Semantic Versioning principles Last Updated: 2026-05-06