# Documentation Changelog

## Version 2.0 - Complete Documentation Update

### 🎯 **Major Updates**

All documentation has been completely rewritten and updated to reflect the new NEONPAY 2.0 API and real-world examples.

### 📋 **Updated Documentation**

#### 1. **English Documentation** (`docs/en/`)
- ✅ **README.md** - Complete rewrite with new API
- ✅ **API.md** - Updated with factory function and new methods
- ✅ **SECURITY.md** - New comprehensive security guide

#### 2. **Russian Documentation** (`docs/ru/`)
- ✅ **README.md** - Updated with new API and examples
- ✅ **API.md** - Updated with factory function and new methods

#### 3. **Azerbaijani Documentation** (`docs/az/`)
- ✅ **README.md** - Updated with new API and examples
- ✅ **API.md** - Updated with factory function and new methods

### 🔧 **Technical Improvements**

#### **API Documentation**
- ✅ Updated to use `neonpay.factory.create_neonpay()`
- ✅ New import paths: `from neonpay.core import PaymentStage, PaymentStatus`
- ✅ Real-world examples based on working bots
- ✅ Production-ready code snippets

#### **Security Documentation**
- ✅ New comprehensive security guide
- ✅ Token protection best practices
- ✅ Payment validation guidelines
- ✅ Data protection measures
- ✅ Error handling security
- ✅ Logging security
- ✅ Production checklist

#### **Examples Integration**
- ✅ All examples reference real working bots
- ✅ Donation system examples (1⭐, 10⭐, 50⭐)
- ✅ Digital store examples (Premium Access, Custom Theme, Priority Support)
- ✅ Production deployment guides

### 📚 **Content Updates**

#### **Quick Start Guide**
- ✅ Updated installation instructions
- ✅ New factory function usage
- ✅ Real-world payment stage examples
- ✅ Proper error handling

#### **Library Support**
- ✅ Aiogram integration (recommended)
- ✅ Pyrogram integration
- ✅ pyTelegramBotAPI integration
- ✅ python-telegram-bot integration
- ✅ Raw API integration

#### **Real-world Examples**
- ✅ Donation bot implementation
- ✅ Digital store implementation
- ✅ Payment validation
- ✅ Auto-delivery system

#### **Best Practices**
- ✅ Payment data validation
- ✅ Error handling
- ✅ Meaningful stage IDs
- ✅ Payment event logging

#### **Production Deployment**
- ✅ Environment variables
- ✅ Database integration
- ✅ Error monitoring
- ✅ Health checks
- ✅ Webhook setup

### 🚀 **New Features**

#### **Security Guide**
- ✅ Token security
- ✅ Payment validation
- ✅ Data protection
- ✅ Error handling
- ✅ Logging security
- ✅ Production checklist
- ✅ Rate limiting
- ✅ Monitoring and alerts
- ✅ Incident response

#### **Production Ready**
- ✅ Environment variable support
- ✅ Database integration examples
- ✅ Error monitoring setup
- ✅ Health check endpoints
- ✅ Webhook configuration

### 📖 **Documentation Structure**

#### **English (`docs/en/`)**
```
README.md          - Main documentation
API.md             - Complete API reference
SECURITY.md        - Security best practices
```

#### **Russian (`docs/ru/`)**
```
README.md          - Main documentation (Russian)
API.md             - Complete API reference (Russian)
```

#### **Azerbaijani (`docs/az/`)**
```
README.md          - Main documentation (Azerbaijani)
API.md             - Complete API reference (Azerbaijani)
```

### 🔄 **Migration Guide**

#### **From Old Documentation**
1. **Update Imports**: Change from `neonpay` to `neonpay.factory`
2. **Update Classes**: Use `PaymentStage` and `PaymentStatus` from `neonpay.core`
3. **Update Examples**: Use real-world examples from `examples/` directory
4. **Update Security**: Follow new security guidelines

#### **Breaking Changes**
- Import paths changed to `neonpay.factory`
- Payment stage creation simplified
- Error handling enhanced
- Security guidelines updated

### 🐛 **Bug Fixes**

- ✅ Fixed import statements
- ✅ Fixed API method signatures
- ✅ Fixed example code
- ✅ Fixed security guidelines
- ✅ Fixed production deployment

### 📈 **Performance**

- ✅ Faster payment processing examples
- ✅ Better error recovery
- ✅ Improved logging examples
- ✅ Optimized callback handling
- ✅ Reduced memory usage examples

### 🔒 **Security**

- ✅ Environment variable support
- ✅ Secure token handling
- ✅ Input validation examples
- ✅ Error sanitization
- ✅ Logging security

### 🎉 **What's New**

#### **Real-world Code**
All documentation examples are now based on **actual working bots** that have processed real payments.

#### **Production Ready**
Every example can be deployed to production with minimal changes.

#### **Comprehensive Security**
- Token protection
- Payment validation
- Data protection
- Error handling
- Logging security
- Production checklist

#### **Better Documentation**
- Detailed API reference
- Code examples
- Usage guides
- Deployment guides
- Security best practices

### 🚀 **Next Steps**

1. **Read** the updated documentation
2. **Follow** the quick start guide
3. **Use** the real-world examples
4. **Implement** security best practices
5. **Deploy** to production

### 📞 **Support**

- 📚 [Documentation](../README.md)
- 💬 [Community](https://t.me/neonpay_community)
- 🐛 [Issues](https://github.com/Abbasxan/neonpay/issues)
- 📧 [Email](mailto:support@neonpay.com)

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**Happy coding with NEONPAY! 🚀**
