📊 vx-version

🎯 Overview

vx-version provides comprehensive version management capabilities for the vx universal tool manager. It handles version parsing, fetching from external sources, semantic version comparison, and constraint resolution across different tool ecosystems.

✨ Features

🔍 Version Parsing & Comparison

• Semantic Version Support: Full semver parsing with major.minor.patch support
• Prerelease Handling: Intelligent detection and handling of alpha, beta, rc versions
• Version Comparison: Advanced comparison algorithms for sorting and constraint matching
• Format Flexibility: Support for various version formats (v1.0.0, go1.21.0, etc.)

🌐 External Version Fetching

• GitHub Releases: Fetch versions from GitHub releases API
• Node.js Official: Direct integration with Node.js distribution API
• Go Releases: Support for Go version fetching
• Extensible: Easy to add new version sources

🎯 Smart Version Management

• LTS Detection: Automatic detection of Long Term Support versions
• Stability Filtering: Filter stable vs prerelease versions
• Version Constraints: Support for version ranges and constraints
• Caching: Intelligent caching of version information

⚡ Performance & Reliability

• Async-First: Non-blocking operations with concurrent fetching
• Error Handling: Comprehensive error types with recovery suggestions
• Retry Logic: Built-in retry mechanisms for network operations
• Rate Limiting: Respectful API usage with proper rate limiting

🚀 Quick Start

Add vx-version to your Cargo.toml:

[dependencies]
vx-version = "0.2"

Basic Usage

use vx_version::{VersionManager, GitHubVersionFetcher, VersionUtils};

#[tokio::main]
async fn main() -> anyhow::Result<()> {
    // Fetch versions from GitHub
    let fetcher = GitHubVersionFetcher::new("astral-sh", "uv");
    let versions = fetcher.fetch_versions(false).await?;
    
    println!("Latest UV version: {}", versions[0].version);
    
    // Get installed version
    if let Some(installed) = VersionManager::get_installed_version("uv")? {
        println!("Installed UV version: {}", installed);
    }
    
    // Compare versions
    let is_newer = VersionUtils::is_greater_than("0.7.13", "0.7.10");
    println!("0.7.13 > 0.7.10: {}", is_newer);
    
    Ok(())
}

💡 Advanced Usage

Version Fetching

use vx_version::{GitHubVersionFetcher, NodeVersionFetcher, VersionFetcher};

// GitHub releases
let uv_fetcher = GitHubVersionFetcher::new("astral-sh", "uv");
let uv_versions = uv_fetcher.fetch_versions(true).await?; // Include prereleases

// Node.js official API
let node_fetcher = NodeVersionFetcher::new();
let node_versions = node_fetcher.fetch_versions(false).await?; // Stable only

// Get latest version
let latest_uv = uv_fetcher.get_latest_version().await?;
if let Some(version) = latest_uv {
    println!("Latest UV: {}", version.version);
}

Version Parsing & Comparison

use vx_version::{Version, VersionUtils};

// Parse semantic versions
let v1 = Version::parse("1.2.3")?;
let v2 = Version::parse("1.2.4-alpha.1")?;

println!("v1: {}, prerelease: {}", v1, v1.is_prerelease());
println!("v2: {}, prerelease: {}", v2, v2.is_prerelease());

// Compare versions
assert!(v1 < v2); // Semantic comparison

// Utility functions
assert!(VersionUtils::is_greater_than("2.0.0", "1.9.9"));
assert!(VersionUtils::is_prerelease("1.0.0-beta"));
assert_eq!(VersionUtils::clean_version("v1.0.0", &["v"]), "1.0.0");

Version Information

use vx_version::VersionInfo;

let version = VersionInfo::new("18.17.0".to_string())
    .with_release_date("2023-06-20".to_string())
    .with_download_url("https://nodejs.org/dist/v18.17.0/node-v18.17.0.tar.gz".to_string())
    .with_metadata("lts".to_string(), "true".to_string())
    .with_metadata("lts_name".to_string(), "Hydrogen".to_string());

println!("Version: {}", version); // "18.17.0 (LTS: Hydrogen)"
println!("Is LTS: {}", version.is_lts());
println!("Download URL: {:?}", version.download_url);

Custom Version Fetchers

use vx_version::{VersionFetcher, VersionInfo, Result};
use async_trait::async_trait;

struct CustomVersionFetcher {
    tool_name: String,
}

#[async_trait]
impl VersionFetcher for CustomVersionFetcher {
    fn tool_name(&self) -> &str {
        &self.tool_name
    }

    async fn fetch_versions(&self, include_prerelease: bool) -> Result<Vec<VersionInfo>> {
        // Custom implementation
        let versions = vec![
            VersionInfo::new("1.0.0".to_string()),
            VersionInfo::new("1.1.0".to_string()),
        ];
        Ok(versions)
    }
}

🏗️ Architecture

Core Components

vx-version/
├── error.rs          # Error types and handling
├── fetcher.rs         # Version fetching traits and implementations
├── info.rs            # VersionInfo type and utilities
├── manager.rs         # Version management and comparison
├── parser.rs          # Version parsing for different tools
└── utils.rs           # Utility functions and helpers

Version Sources

Version Formats

🧪 Testing

# Run all tests
cargo test

# Run specific test modules
cargo test version_parsing
cargo test version_fetching
cargo test version_comparison

# Run with network tests (requires internet)
cargo test --features network-tests

# Test with coverage
cargo tarpaulin --out Html

Test Coverage

• Unit Tests: 95%+ coverage of core functionality
• Integration Tests: Real API testing with mocked responses
• Property Tests: Fuzz testing for version parsing
• Performance Tests: Benchmarks for comparison algorithms

🔗 Related Crates

• vx-installer - Universal installation engine
• vx-core - Core functionality and utilities
• vx-cli - Command-line interface
• vx-config - Configuration management
• vx-plugin - Plugin system and trait definitions

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.