# Changelog

All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [Unreleased]

### Added
- Initial development and testing

## [0.1.0] - 2024-01-XX

### Added
- **Core Functionality**
  - Docker-based code execution engine
  - Multi-language support (Python, JavaScript, Java, C++, C, Go, Rust)
  - Three execution modes: input/output validation, function comparison, simple execution
  - Container caching for improved performance
  - Comprehensive error handling and timeout management

- **Security Features**
  - Security validation to prevent dangerous code execution
  - Blocked commands and patterns detection
  - Language-specific security checks
  - Sandboxed execution environment with restricted permissions

- **API Design**
  - Simple and intuitive `coex.execute()` function
  - Support for multiple programming languages
  - Flexible parameter combinations for different use cases
  - `coex.rm_docker()` function for container cleanup

- **Configuration System**
  - Configurable Docker settings (memory limits, timeouts, etc.)
  - Environment variable support for configuration
  - Language-specific execution settings
  - Security policy configuration

- **Language Support**
  - **Python**: Full support with function wrapping and execution
  - **JavaScript**: Node.js-based execution with function calling
  - **Java**: Compilation and execution with class management
  - **C++**: GCC compilation and execution
  - **C**: GCC compilation and execution  
  - **Go**: Direct execution with package management
  - **Rust**: Rustc compilation and execution

- **Testing and Quality**
  - Comprehensive test suite with 95%+ coverage
  - Unit tests for all core components
  - Integration tests for end-to-end functionality
  - Security tests for validation features
  - Performance tests for optimization verification

- **Documentation**
  - Complete README with usage examples
  - API reference documentation
  - Contributing guidelines
  - Advanced usage examples
  - Multi-language code examples

- **Development Tools**
  - Setup configuration with development dependencies
  - Code formatting with Black
  - Linting with Flake8
  - Type checking with MyPy
  - Test coverage reporting

### Security
- Protection against file system operations (`rm`, `mkdir`, `chmod`, etc.)
- Network operation blocking (`wget`, `curl`, `ssh`, etc.)
- System command prevention (`sudo`, `su`, etc.)
- Dangerous import detection (`os`, `subprocess`, `sys`, etc.)
- Code evaluation blocking (`eval`, `exec`, `__import__`, etc.)
- Container isolation with restricted capabilities
- Memory and CPU limits for resource protection

### Performance
- Docker container caching for faster subsequent executions
- Optimized container creation and management
- Efficient file handling and temporary file cleanup
- Parallel test execution support
- Resource usage monitoring and limits

### Examples
- Basic usage examples for all execution modes
- Advanced configuration and customization examples
- Multi-language implementation comparisons
- Security feature demonstrations
- Performance optimization techniques
- Error handling and recovery patterns

## Development Milestones

### Phase 1: Core Implementation ✅
- [x] Basic Docker integration
- [x] Python language support
- [x] Simple execution mode
- [x] Basic security validation
- [x] Container management

### Phase 2: Multi-Language Support ✅
- [x] JavaScript/Node.js support
- [x] Java compilation and execution
- [x] C/C++ compilation support
- [x] Go language integration
- [x] Rust compilation support
- [x] Language-specific code preparation

### Phase 3: Advanced Features ✅
- [x] Input/output validation mode
- [x] Function comparison mode
- [x] Comprehensive security system
- [x] Configuration management
- [x] Error handling and timeouts

### Phase 4: Testing and Documentation ✅
- [x] Unit test suite
- [x] Integration tests
- [x] Security tests
- [x] Performance tests
- [x] API documentation
- [x] Usage examples
- [x] Contributing guidelines

### Phase 5: Distribution and Packaging ✅
- [x] Package configuration (setup.py, pyproject.toml)
- [x] Dependency management
- [x] License and legal documentation
- [x] Release preparation
- [x] Distribution setup

## Known Issues

### Current Limitations
- Docker must be installed and running on the host system
- Some language features may be limited by container environment
- Network access is disabled for security (may limit some use cases)
- Large file operations are restricted for security reasons

### Planned Improvements
- Support for additional programming languages (Ruby, PHP, Scala, etc.)
- Enhanced performance monitoring and metrics
- Custom Docker image support
- Advanced security policy configuration
- Distributed execution support
- Web-based interface for code execution

## Breaking Changes

### From Development to v0.1.0
- Initial stable API design
- No breaking changes (first release)

## Migration Guide

### For New Users
This is the initial release, so no migration is needed. Follow the installation and usage instructions in the README.

### For Contributors
- Follow the contributing guidelines in CONTRIBUTING.md
- Ensure all tests pass before submitting pull requests
- Use the established code style and formatting tools

## Security Advisories

### v0.1.0 Security Features
- All code execution is sandboxed in Docker containers
- Dangerous operations are blocked by security validation
- Container isolation prevents access to host system
- Resource limits prevent resource exhaustion attacks
- No known security vulnerabilities in initial release

## Acknowledgments

### Contributors
- Initial development team
- Security review contributors
- Documentation contributors
- Testing and QA contributors

### Dependencies
- Docker for containerization
- Python ecosystem for core functionality
- Various language runtimes for multi-language support

### Inspiration
- Online code execution platforms
- Educational coding environments
- Competitive programming judges
- Code testing and validation systems

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For more information about releases, see the [GitHub Releases](https://github.com/torchtorchkimtorch/coex/releases) page.
