# Leadmatix Changelog

## Version 1.0.0 - Initial Release
**Date**: December 2024

### 🎉 New Features

#### Core Platform
- ✅ Multi-tenant SaaS architecture with client isolation
- ✅ Role-based access control (Owner/Client)
- ✅ JWT authentication with refresh tokens
- ✅ API key authentication for public endpoints
- ✅ Complete audit logging system

#### Admin Dashboard
- ✅ Client management (CRUD operations)
- ✅ API key generation and reset
- ✅ Client statistics and analytics
- ✅ Lead export functionality
- ✅ Cross-client analytics dashboard

#### Client Dashboard
- ✅ Lead management with search/filter
- ✅ Lead status updates (New/Pending/Complete)
- ✅ Client-specific analytics
- ✅ Profile management
- ✅ API key management

#### Embeddable Popup
- ✅ Single-line JavaScript integration
- ✅ Script-only and Script+Assets modes
- ✅ Responsive design with mobile optimization
- ✅ Accessibility features (ARIA, keyboard navigation)
- ✅ Cookie-based show-once functionality

#### Popup Configuration
- ✅ Dynamic form fields (Text, Email, Phone, Textarea, Dropdown, Checkbox, Radio)
- ✅ Customizable styling (colors, fonts, positioning)
- ✅ Field validation and requirements
- ✅ Spam protection (honeypot fields)
- ✅ Animation and delay controls
- ✅ Breakpoint-specific visibility rules

#### Analytics & Tracking
- ✅ Unique impression tracking (cookie + database fallback)
- ✅ Conversion rate calculation
- ✅ Time series analytics
- ✅ Client-isolated metrics
- ✅ Daily/weekly/monthly reporting

#### Security Features
- ✅ Input sanitization with htmlspecialchars()
- ✅ XSS and CSRF protection
- ✅ Rate limiting (multiple tiers)
- ✅ SQL injection prevention via Prisma ORM
- ✅ Clickjacking protection
- ✅ Content Security Policy headers

#### Email System
- ✅ SMTP email notifications
- ✅ Configurable notification emails per client
- ✅ HTML email templates
- ✅ Lead submission notifications

#### Database
- ✅ MySQL schema with proper indexing
- ✅ Multi-tenant data isolation
- ✅ Soft delete functionality
- ✅ Audit trail tables
- ✅ Optimized for analytics queries

### 🔧 Technical Implementation

#### Backend (Node.js + Express + TypeScript)
- ✅ Express.js REST API with TypeScript
- ✅ Prisma ORM with MySQL
- ✅ Zod validation schemas
- ✅ Winston logging
- ✅ Helmet security middleware
- ✅ CORS configuration
- ✅ Rate limiting middleware
- ✅ JWT token management
- ✅ Email service with Nodemailer

#### Frontend (React + TypeScript + Vite)
- ✅ React 18 with TypeScript
- ✅ Vite build system
- ✅ TailwindCSS + shadcn/ui components
- ✅ React Query for server state
- ✅ React Router for navigation
- ✅ React Hook Form + Zod validation
- ✅ Recharts for analytics

#### Embeddable Script
- ✅ Vanilla JavaScript (no dependencies)
- ✅ Lightweight (~15KB minified)
- ✅ Cross-browser compatibility
- ✅ Shadow DOM support (optional)
- ✅ Local asset fallback
- ✅ Error handling and graceful degradation

### 📊 Database Schema
- ✅ `users` - Authentication and user management
- ✅ `clients` - Tenant/client accounts
- ✅ `popups` - Popup configurations
- ✅ `popup_fields` - Dynamic form fields
- ✅ `leads` - Lead submissions
- ✅ `impressions` - Visitor tracking
- ✅ `audit_logs` - Security and action logging

### 🔌 API Endpoints
- ✅ Authentication endpoints (login, refresh, profile)
- ✅ Admin endpoints (client management, statistics)
- ✅ Client endpoints (leads, profile, statistics)
- ✅ Public endpoints (popup config, lead submission, tracking)

### 📱 Responsive Design
- ✅ Mobile-first approach
- ✅ Tablet and desktop optimization
- ✅ Touch-friendly interactions
- ✅ High contrast mode support
- ✅ Reduced motion support

### 🌐 Browser Support
- ✅ Chrome 90+
- ✅ Firefox 88+
- ✅ Safari 14+
- ✅ Edge 90+
- ✅ Mobile browsers (iOS Safari, Chrome Mobile)

### 📈 Performance
- ✅ Optimized database queries
- ✅ Efficient caching strategies
- ✅ Minified and compressed assets
- ✅ Lazy loading for large datasets
- ✅ Pagination for all data tables

### 🔒 Security Compliance
- ✅ GDPR-friendly data handling
- ✅ Data retention policies
- ✅ Secure cookie management
- ✅ Input validation and sanitization
- ✅ Rate limiting and abuse prevention

### 📚 Documentation
- ✅ Comprehensive README
- ✅ API documentation
- ✅ Integration examples
- ✅ Troubleshooting guide
- ✅ Database schema documentation

### 🧪 Testing
- ✅ Backend API testing
- ✅ Frontend component testing
- ✅ Integration testing
- ✅ Security testing
- ✅ Performance testing

### 🚀 Deployment
- ✅ Production-ready configuration
- ✅ Environment variable management
- ✅ Database migration scripts
- ✅ Seed data for development
- ✅ Docker support (optional)

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## Future Roadmap

### Version 1.1.0 (Planned)
- 🔄 Advanced popup templates
- 🔄 A/B testing capabilities
- 🔄 Webhook integrations
- 🔄 Advanced analytics filters
- 🔄 Bulk lead import/export

### Version 1.2.0 (Planned)
- 🔄 Multi-language support
- 🔄 Advanced spam protection (reCAPTCHA, Turnstile)
- 🔄 Custom domain support
- 🔄 White-label options
- 🔄 Advanced reporting

### Version 2.0.0 (Planned)
- 🔄 Mobile app for lead management
- 🔄 Advanced CRM integrations
- 🔄 Marketing automation features
- 🔄 Advanced analytics dashboard
- 🔄 Enterprise features

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**Note**: This changelog will be updated with each new release to track features, improvements, and bug fixes.