feat: Add comprehensive documentation suite and reorganize project structure
- Created complete documentation in docs/ directory - Added PROJECT_OVERVIEW.md with feature highlights and getting started guide - Added ARCHITECTURE.md with system design and technical details - Added SECURITY.md with comprehensive security implementation guide - Added DEVELOPMENT.md with development workflows and best practices - Added DEPLOYMENT.md with production deployment instructions - Added API.md with complete REST API documentation - Added CONTRIBUTING.md with contribution guidelines - Added CHANGELOG.md with version history and migration notes - Reorganized all documentation files into docs/ directory for better organization - Updated README.md with proper documentation links and quick navigation - Enhanced project structure with professional documentation standards
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SamiAhmed7777
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docs/ARCHITECTURE.md
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# EasyStream Architecture
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This document provides a comprehensive overview of EasyStream's architecture, design patterns, and system components.
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## System Overview
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EasyStream is a high-performance video streaming platform built with PHP, featuring:
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- Multi-format media support (video, audio, images, documents)
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- Live streaming with RTMP/HLS
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- Containerized deployment with Docker
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- Comprehensive security framework
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- Background job processing
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- Admin dashboard and user management
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## Architecture Patterns
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### MVC-Like Structure
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- **Models**: `f_core/f_classes/` - Core business logic classes
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- **Views**: `f_templates/` - Smarty template files
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- **Controllers**: `f_modules/` - Feature modules handling requests
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### Service Layer Pattern
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Core services are implemented as singleton classes:
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- `VDatabase` - Database abstraction layer
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- `VSecurity` - Security and validation services
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- `VLogger` - Centralized logging
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- `VAuth` - Authentication and authorization
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- `VRBAC` - Role-based access control
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## Core Components
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### 1. Application Bootstrap (`f_core/config.core.php`)
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```php
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// Initialization sequence:
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1. Environment configuration
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2. Database connection
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3. Session management
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4. Security initialization
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5. Logging setup
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6. Template engine configuration
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```
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### 2. Database Layer (`f_core/f_classes/class.database.php`)
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- Built on ADOdb for database abstraction
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- Prepared statement support
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- Connection pooling
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- Query validation and sanitization
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- Transaction management
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### 3. Security Framework (`f_core/f_classes/class.security.php`)
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- Input validation and sanitization
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- CSRF protection
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- Rate limiting
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- XSS prevention
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- SQL injection protection
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- File upload validation
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### 4. Authentication System (`f_core/f_classes/class.auth.php`)
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- Multi-factor authentication support
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- Session management
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- Password hashing (bcrypt/Argon2)
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- Login attempt tracking
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- Account lockout mechanisms
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### 5. Authorization (RBAC) (`f_core/f_classes/class.rbac.php`)
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- Role-based permissions
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- Resource-level access control
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- Dynamic permission checking
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- Hierarchical role inheritance
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## Data Flow Architecture
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### Request Processing Flow
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```
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1. index.php (Entry Point)
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↓
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2. Router (URL parsing)
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↓
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3. Module Selection (f_modules/)
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↓
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4. Authentication Check
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↓
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5. Authorization Validation
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↓
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6. Business Logic Execution
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↓
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7. Template Rendering
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↓
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8. Response Output
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```
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### Background Job Processing
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```
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1. Job Creation (f_jobs/)
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↓
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2. Queue Management (class.queuemanager.php)
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↓
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3. Worker Processing (f_core/f_workers/)
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↓
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4. Job Execution
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↓
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5. Result Logging
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```
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## Live Streaming Architecture
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### RTMP/HLS Pipeline
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```
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1. RTMP Input (SRS Server)
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↓
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2. Stream Processing
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↓
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3. HLS Segmentation
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↓
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4. CDN Distribution (Caddy)
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↓
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5. Client Playback
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```
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### Components
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- **SRS (Simple Realtime Server)**: RTMP ingestion and HLS output
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- **Caddy**: HTTP/2 web server with automatic HTTPS
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- **FFmpeg**: Video processing and transcoding
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- **HLS.js**: Client-side video player
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## Database Schema
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### Core Tables
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- `users` - User accounts and profiles
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- `videos` - Video metadata and processing status
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- `streams` - Live stream configurations
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- `categories` - Content categorization
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- `comments` - User interactions
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- `notifications` - System notifications
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### Security Tables
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- `user_sessions` - Active user sessions
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- `login_attempts` - Failed login tracking
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- `ip_bans` - IP-based access control
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- `fingerprints` - Browser fingerprinting data
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### System Tables
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- `configurations` - Application settings
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- `logs` - System and security logs
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- `jobs` - Background job queue
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- `permissions` - RBAC permissions
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## Security Architecture
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### Defense in Depth
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1. **Input Layer**: Validation and sanitization
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2. **Application Layer**: CSRF, rate limiting, authentication
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3. **Database Layer**: Prepared statements, access control
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4. **Network Layer**: HTTPS, firewall rules
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5. **Infrastructure Layer**: Container isolation, secrets management
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### Security Components
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- **IP Tracking**: Monitor and block suspicious IPs
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- **Fingerprinting**: Browser-based user identification
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- **Rate Limiting**: Prevent abuse and DoS attacks
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- **Audit Logging**: Comprehensive security event logging
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## Caching Strategy
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### Multi-Level Caching
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1. **Application Cache**: In-memory object caching
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2. **Database Cache**: Query result caching (ADOdb)
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3. **Template Cache**: Compiled template caching (Smarty)
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4. **Static Asset Cache**: CDN and browser caching
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### Cache Invalidation
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- Time-based expiration
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- Event-driven invalidation
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- Manual cache clearing via admin panel
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## Monitoring and Observability
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### Logging Framework
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- **Structured Logging**: JSON-formatted log entries
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- **Log Levels**: Emergency, Alert, Critical, Error, Warning, Notice, Info, Debug
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- **Context Enrichment**: Request ID, user ID, IP address
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- **Log Rotation**: Automatic cleanup and archival
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### Metrics Collection
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- Application performance metrics
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- Security event tracking
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- User behavior analytics
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- System resource monitoring
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## Scalability Considerations
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### Horizontal Scaling
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- Stateless application design
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- Database connection pooling
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- Session storage externalization
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- Load balancer compatibility
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### Performance Optimization
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- Database query optimization
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- Template compilation caching
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- Static asset optimization
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- CDN integration for media delivery
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## Development Patterns
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### Class Organization
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```
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f_core/f_classes/
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├── class.auth.php # Authentication
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├── class.database.php # Database abstraction
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├── class.security.php # Security utilities
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├── class.logger.php # Logging framework
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├── class.rbac.php # Role-based access
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└── ...
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```
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### Configuration Management
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- Environment-based configuration
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- Database-stored settings
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- Runtime configuration caching
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- Secure credential handling
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### Error Handling
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- Global exception handling
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- User-friendly error pages
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- Detailed error logging
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- Debug mode for development
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## API Architecture
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### RESTful Design
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- Resource-based URLs
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- HTTP method semantics
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- Proper status codes
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- JSON response format
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### Authentication
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- Token-based authentication
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- API key management
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- Rate limiting per client
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- Scope-based permissions
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## Deployment Architecture
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### Container Strategy
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- Multi-container deployment (Docker Compose)
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- Service isolation
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- Volume management for persistent data
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- Health checks and restart policies
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### Services
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- **PHP-FPM**: Application server
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- **Caddy**: Web server and reverse proxy
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- **MariaDB**: Database server
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- **SRS**: Streaming server
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- **Cron**: Scheduled task runner
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## Future Considerations
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### Microservices Migration
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- Service decomposition strategy
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- API gateway implementation
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- Inter-service communication
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- Data consistency patterns
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### Cloud Native Features
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- Kubernetes deployment
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- Auto-scaling capabilities
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- Service mesh integration
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- Observability stack (Prometheus, Grafana)
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## Performance Benchmarks
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### Target Metrics
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- Page load time: < 2 seconds
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- API response time: < 500ms
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- Concurrent users: 10,000+
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- Video processing: Real-time for live streams
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### Optimization Techniques
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- Database indexing strategy
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- Query optimization
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- Caching layer implementation
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- CDN utilization for static assets
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