# Changelog

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

## [2.0.1] - 2024-12-23

### Fixed
- ✅ **PHP 8.0+ Compatibility**: Resolved all deprecated warnings
- ✅ **Null Value Handling**: Added comprehensive null checks throughout the codebase
- ✅ **Headers Already Sent**: Fixed output buffer issues
- ✅ **Character Encoding**: Cleaned all PHP files to UTF-8 without BOM
- ✅ **CRLF Line Endings**: Converted all files to LF for consistency

### Added
- ✅ **Subscriber Stats Method**: Added `get_subscriber_stats()` to PushRelay_Subscribers class
- ✅ **Error Suppression**: Production mode now suppresses deprecated warnings automatically
- ✅ **Enhanced Validation**: Added isset() and !empty() checks for all array access
- ✅ **Default Values**: Implemented null coalescing operator (??) for safer defaults

### Improved
- 📈 **Code Quality**: Enhanced type safety across all classes
- 📈 **Performance**: Optimized database queries and API calls
- 📈 **Documentation**: Added inline comments and PHPDoc blocks
- 📈 **Error Handling**: Better error messages and logging

### Changed
- 🔄 **Analytics View**: Now calculates stats locally when method unavailable
- 🔄 **Subscribers View**: Improved null safety in data display
- 🔄 **API Client**: Enhanced error handling for edge cases

## [2.0.0] - 2024-12-22

### Added
- 🎉 **Initial Release**: Complete rewrite of the plugin
- 🎯 **Campaign Management**: Visual campaign builder with live preview
- 📊 **Advanced Analytics**: Comprehensive reporting and metrics
- 👥 **Subscriber Management**: Full CRUD operations for subscribers
- 🎨 **Modern UI**: Beautiful, responsive admin interface
- 🔧 **WooCommerce Integration**: E-commerce specific features
- 📈 **Segmentation**: Advanced subscriber targeting
- 🔔 **Service Worker**: Progressive web app support
- 🛠️ **API Integration**: Full PushRelay.com API support
- 📝 **Debug Logging**: Comprehensive logging system
- ❤️ **Health Check**: System status monitoring
- 🎭 **Shortcodes**: Easy content embedding
- 🎫 **Support Tickets**: In-dashboard support system

### Features
- Multiple campaign types (broadcast, scheduled, automated)
- Real-time subscriber tracking
- Click-through rate (CTR) analytics
- Custom parameter tracking
- Export to CSV
- Webhook support
- REST API endpoints
- Multi-website support
- Custom branding options
- A/B testing support

### Technical
- Object-oriented architecture
- PSR-4 autoloading ready
- WordPress Coding Standards compliant
- WooCommerce compatibility
- Multisite compatible
- Translation ready (i18n)
- WPCS validated
- Security hardened

---

## Upgrade Notices

### 2.0.1
This version fixes all PHP 8+ compatibility issues. Safe to upgrade from 2.0.0.

### 2.0.0
Major version with breaking changes. Fresh installation recommended.

---

## Future Roadmap

### Version 2.1.0 (Planned)
- [ ] A/B Testing Dashboard
- [ ] Automated Drip Campaigns
- [ ] Advanced Scheduling Options
- [ ] Template Library
- [ ] Custom Event Tracking

### Version 2.2.0 (Planned)
- [ ] Mobile App Integration
- [ ] Multi-language Support
- [ ] Advanced Personalization
- [ ] Machine Learning Insights
- [ ] Geo-targeting

### Version 3.0.0 (Future)
- [ ] Gutenberg Blocks
- [ ] Elementor Integration
- [ ] Custom Dashboard Widgets
- [ ] Advanced Automation Rules
- [ ] White Label Options

---

**Legend:**
- 🎉 New Feature
- ✅ Bug Fix
- 📈 Improvement
- 🔄 Changed
- 🗑️ Removed
- 🔒 Security
- ⚠️ Deprecated

---

For more details, visit [https://pushrelay.com/changelog](https://pushrelay.com/changelog)