# Changelog

All notable changes to EasyStream 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
- Comprehensive documentation suite
- Project architecture documentation
- Security implementation guide
- API documentation with examples
- Development workflow documentation
- Deployment guides for various environments

### Changed
- Improved README structure with documentation links
- Enhanced project organization

## [2.0.0] - 2024-01-20

### Added
- **Live Streaming Infrastructure**
  - Complete RTMP/HLS streaming system with SRS integration
  - Real-time stream monitoring and analytics
  - Adaptive bitrate streaming support
  - Stream recording and DVR functionality
  - Live chat and interaction features

- **Enhanced Admin Dashboard**
  - Comprehensive user management system
  - Content moderation tools
  - System analytics and reporting
  - Security monitoring dashboard
  - Configuration management interface

- **Advanced Content Management**
  - Metadata management for all media types
  - Category and tag system
  - Content scheduling and automation
  - Bulk operations for content management
  - Advanced search and filtering

- **Background Job System**
  - Asynchronous video processing
  - Queue management with priorities
  - Job monitoring and retry logic
  - Scalable worker architecture
  - Database and Redis queue backends

- **API Enhancements**
  - Video progress tracking endpoints
  - Enhanced social interaction APIs
  - Comprehensive error handling
  - Rate limiting and authentication
  - Webhook support for real-time notifications

### Enhanced
- **Security Framework**
  - Advanced authentication system with MFA
  - Role-based access control (RBAC)
  - IP tracking and geolocation
  - Browser fingerprinting
  - Enhanced rate limiting
  - Comprehensive audit logging

- **Performance Optimizations**
  - Database query optimization
  - Caching layer improvements
  - Template compilation optimization
  - Asset optimization and compression
  - CDN integration support

### Fixed
- Database connection stability issues
- Memory leaks in video processing
- Session management improvements
- File upload security vulnerabilities
- Template rendering performance

## [1.5.0] - 2023-12-15

### Added
- **Authentication System Overhaul**
  - Multi-factor authentication (TOTP, SMS, Email)
  - Advanced password policies
  - Account lockout mechanisms
  - Session management improvements
  - OAuth integration support

- **Security Enhancements**
  - Comprehensive input validation framework
  - CSRF protection for all forms
  - XSS prevention mechanisms
  - SQL injection protection
  - File upload security scanning

- **Testing Framework**
  - PHPUnit integration
  - Unit tests for core functionality
  - Integration tests for API endpoints
  - Security testing suite
  - Performance testing tools
  - Automated CI/CD pipeline

### Changed
- Migrated to PHP 8.2 with strict typing
- Updated database schema for better performance
- Improved error handling and logging
- Enhanced template system with caching

### Fixed
- Critical security vulnerabilities
- Database performance issues
- Memory usage optimization
- File permission problems

## [1.4.0] - 2023-11-01

### Added
- **Docker Integration**
  - Complete Docker Compose setup
  - Multi-container architecture
  - Development and production configurations
  - Automated deployment scripts
  - Health checks and monitoring

- **Live Streaming Foundation**
  - SRS (Simple Realtime Server) integration
  - RTMP ingestion support
  - HLS delivery system
  - Stream management interface
  - Basic streaming analytics

- **API Framework**
  - RESTful API structure
  - JSON response formatting
  - Authentication middleware
  - Rate limiting implementation
  - Error handling standardization

### Enhanced
- Video processing pipeline
- User interface responsiveness
- Database performance
- Logging and monitoring

## [1.3.0] - 2023-09-15

### Added
- **Progressive Web App (PWA)**
  - Service worker implementation
  - Offline functionality
  - App installation prompts
  - Push notification support
  - Responsive design improvements

- **Social Features**
  - User subscriptions and followers
  - Comment system with threading
  - Like and dislike functionality
  - User notifications
  - Activity feeds

- **Content Organization**
  - Playlist creation and management
  - Video categorization
  - Tag system implementation
  - Search functionality
  - Content recommendations

### Changed
- Improved video player interface
- Enhanced mobile experience
- Optimized database queries
- Updated security protocols

## [1.2.0] - 2023-08-01

### Added
- **Admin Panel**
  - User management interface
  - Content moderation tools
  - System configuration panel
  - Analytics dashboard
  - Log viewer and management

- **Video Processing**
  - Automatic thumbnail generation
  - Multiple quality transcoding
  - Progress tracking
  - Batch processing support
  - Error handling and retry logic

- **User Profiles**
  - Customizable user profiles
  - Avatar upload and management
  - User statistics
  - Privacy settings
  - Account management

### Enhanced
- Upload interface and experience
- Video player functionality
- Search capabilities
- Performance optimizations

## [1.1.0] - 2023-06-15

### Added
- **Core Video Platform**
  - Video upload and storage
  - Basic video player
  - User registration and login
  - Video listing and browsing
  - Basic search functionality

- **Security Foundation**
  - Input sanitization
  - Basic authentication
  - Session management
  - CSRF protection
  - SQL injection prevention

- **Template System**
  - Smarty template integration
  - Responsive design foundation
  - Theme system
  - Multi-language support preparation

### Changed
- Database schema optimization
- Improved file handling
- Enhanced error reporting

## [1.0.0] - 2023-05-01

### Added
- **Initial Release**
  - Basic PHP framework structure
  - Database abstraction layer
  - Configuration system
  - Logging framework
  - Basic routing system

- **Core Infrastructure**
  - ADOdb database integration
  - Smarty template engine
  - Basic security framework
  - File upload handling
  - Session management

- **Foundation Features**
  - User authentication
  - Basic video upload
  - Simple video listing
  - Admin interface foundation
  - Configuration management

### Technical Debt
- Legacy code cleanup needed
- Performance optimization required
- Security audit pending
- Documentation incomplete

---

## Migration Notes

### Upgrading to 2.0.0
1. **Database Migration Required**
   - Run `__install/updatedb_*.sql` scripts
   - Update configuration files
   - Clear application cache

2. **New Dependencies**
   - Docker and Docker Compose
   - SRS for live streaming
   - Redis for caching (optional but recommended)

3. **Configuration Changes**
   - Update environment variables
   - Configure live streaming settings
   - Set up background job processing

4. **Security Updates**
   - Review and update security settings
   - Enable new authentication features
   - Configure rate limiting

### Upgrading to 1.5.0
1. **PHP Version Update**
   - Upgrade to PHP 8.2+
   - Update PHP extensions
   - Test compatibility

2. **Security Enhancements**
   - Enable MFA for admin accounts
   - Review user permissions
   - Update password policies

3. **Testing Integration**
   - Set up testing environment
   - Run test suite
   - Configure CI/CD pipeline

## Breaking Changes

### Version 2.0.0
- **API Changes**: Some API endpoints have been restructured
- **Database Schema**: New tables and columns added
- **Configuration**: New environment variables required
- **Dependencies**: Docker now recommended for deployment

### Version 1.5.0
- **PHP Version**: Minimum PHP 8.2 required
- **Authentication**: New authentication system may require user re-login
- **Templates**: Some template variables changed

### Version 1.4.0
- **Docker**: New deployment method introduced
- **API**: RESTful API structure implemented
- **Configuration**: Docker-specific configuration added

## Security Updates

### Version 2.0.0
- Enhanced RBAC system
- Advanced threat detection
- Improved audit logging
- Browser fingerprinting
- IP geolocation tracking

### Version 1.5.0
- Multi-factor authentication
- Advanced password policies
- Session security improvements
- File upload security scanning
- Comprehensive input validation

### Version 1.4.0
- API authentication and authorization
- Rate limiting implementation
- Enhanced error handling
- Security header improvements

## Performance Improvements

### Version 2.0.0
- Database query optimization
- Advanced caching strategies
- Background job processing
- CDN integration support
- Template compilation optimization

### Version 1.5.0
- PHP 8.2 performance benefits
- Database indexing improvements
- Memory usage optimization
- Template caching enhancements

### Version 1.4.0
- Docker containerization benefits
- Improved resource utilization
- Better scaling capabilities
- Enhanced monitoring

## Known Issues

### Current Issues
- Large file uploads may timeout on some configurations
- Live streaming requires specific network configuration
- Some mobile browsers may have compatibility issues

### Resolved Issues
- ✅ Database connection pooling (v2.0.0)
- ✅ Memory leaks in video processing (v2.0.0)
- ✅ Session management vulnerabilities (v1.5.0)
- ✅ File upload security issues (v1.5.0)
- ✅ Template rendering performance (v1.4.0)

## Acknowledgments

### Contributors
- Core development team
- Security audit team
- Community contributors
- Beta testers and early adopters

### Third-party Libraries
- ADOdb for database abstraction
- Smarty for templating
- SRS for live streaming
- Docker for containerization
- Various PHP libraries and extensions

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For detailed upgrade instructions, see the [Deployment Guide](DEPLOYMENT.md).
For development changes, see the [Development Guide](DEVELOPMENT.md).