# Changelog - PostgreSQL Migration

## [2.0.0] - 2024-10-13

### 🎉 Major Changes - Supabase to PostgreSQL Migration

#### Removed
- ❌ **Supabase dependency** - Removed all Supabase-specific configurations
- ❌ **DIRECT_URL** - Removed connection pooling URL (Supabase-specific)
- ❌ **External database dependency** - Now fully self-hosted

#### Added
- ✅ **PostgreSQL 16 in Docker** - Local PostgreSQL database with Docker support
- ✅ **Redis 7** - Caching and rate limiting with Redis
- ✅ **Adminer** - Database management UI (http://localhost:8080)
- ✅ **Docker Compose setups** - Both development and production configurations
- ✅ **Database initialization** - Automated database setup with extensions
- ✅ **Complete documentation** - Multiple guides for setup and migration
- ✅ **Setup scripts** - Automated setup for both Linux/Mac and Windows
- ✅ **npm scripts** - Convenient Docker commands via npm

#### Modified Files
- 📝 `prisma/schema.prisma` - Removed directUrl field
- 📝 `src/lib/env.ts` - Removed DIRECT_URL, updated DATABASE_URL default
- 📝 `docker-compose.yml` - Complete rewrite with PostgreSQL, Redis, and networking
- 📝 `Dockerfile` - Enhanced with proper PostgreSQL support
- 📝 `package.json` - Added Docker scripts and tsx dependency
- 📝 `README.md` - Updated with new setup instructions

#### New Files
- 📄 `docker-compose.dev.yml` - Development environment (database only)
- 📄 `docker/init-db.sh` - PostgreSQL initialization script
- 📄 `docker/README.md` - Docker-specific documentation
- 📄 `DOCKER_SETUP.md` - Comprehensive Docker setup guide
- 📄 `MIGRATION_FROM_SUPABASE.md` - Step-by-step migration guide
- 📄 `env.example` - Environment variable template
- 📄 `.dockerignore` - Docker build optimization
- 📄 `scripts/setup.sh` - Quick setup script (Linux/Mac)
- 📄 `scripts/setup.ps1` - Quick setup script (Windows)
- 📄 `CHANGELOG.md` - This file

### 📦 Docker Services

#### PostgreSQL Database
- **Image**: postgres:16-alpine
- **Port**: 5432
- **Features**: 
  - Health checks
  - Volume persistence
  - UTF-8 encoding
  - Extensions: uuid-ossp, pg_trgm

#### Redis Cache
- **Image**: redis:7-alpine
- **Port**: 6379
- **Features**:
  - AOF persistence
  - 256MB max memory with LRU eviction
  - Health checks

#### Next.js Application
- **Port**: 3000
- **Features**:
  - Multi-stage build
  - Production optimization
  - Health checks
  - Automatic Prisma generation

#### Adminer (Development)
- **Port**: 8080
- **Features**:
  - Database management UI
  - Optional (dev profile)
  - Pre-configured for PostgreSQL

### 🚀 Quick Start

#### Development Mode
```bash
npm run docker:dev    # Start database
npm run db:migrate    # Run migrations
npm run dev           # Start app
```

#### Production Mode
```bash
npm run docker:prod   # Start all services
```

### 📚 Documentation

- **README.md** - Main documentation with quick start
- **DOCKER_SETUP.md** - Complete Docker guide with troubleshooting
- **MIGRATION_FROM_SUPABASE.md** - Migration guide from Supabase
- **docker/README.md** - Docker commands and operations
- **env.example** - Environment variable reference

### 🔧 New npm Scripts

```bash
# Docker commands
npm run docker:dev         # Start development services
npm run docker:dev:stop    # Stop development services
npm run docker:prod        # Start production stack
npm run docker:stop        # Stop all services
npm run docker:logs        # View all logs
npm run docker:db          # PostgreSQL CLI
npm run docker:redis       # Redis CLI
npm run docker:backup      # Backup database
```

### 🔐 Environment Variables

#### Required
- `DATABASE_URL` - PostgreSQL connection string
- `NEXTAUTH_SECRET` - NextAuth.js secret (generate with openssl)
- `NEXTAUTH_URL` - Application URL
- `IP_SALT` - Salt for IP hashing (generate with openssl)

#### Optional
- `GOOGLE_CLIENT_ID` - Google OAuth client ID
- `GOOGLE_CLIENT_SECRET` - Google OAuth secret
- `REDIS_URL` - Redis connection string
- `ENABLE_DEMO` - Enable demo mode

### 🎯 Benefits

1. **Full Control** - Own your data and infrastructure
2. **No Vendor Lock-in** - Standard PostgreSQL
3. **Lower Latency** - Local network speed
4. **Cost Effective** - No monthly database fees
5. **Privacy** - Data stays on your infrastructure
6. **Development** - Easy local testing
7. **Offline Capable** - Works without internet

### 🔄 Migration Path

1. Backup Supabase data
2. Update codebase
3. Start local PostgreSQL
4. Restore data or run migrations
5. Update environment variables
6. Deploy

See [MIGRATION_FROM_SUPABASE.md](MIGRATION_FROM_SUPABASE.md) for detailed steps.

### ⚠️ Breaking Changes

- `DIRECT_URL` environment variable removed
- Database now requires Docker or local PostgreSQL
- Supabase-specific features removed

### 📊 Performance Improvements

- Local database reduces latency
- Redis caching improves response times
- Connection pooling via Prisma
- Optimized Docker images

### 🐛 Bug Fixes

- Fixed database connection handling
- Improved error messages
- Better health checks

### 🔜 Future Enhancements

- [ ] PostgreSQL replication for HA
- [ ] Redis Sentinel for failover
- [ ] Automated backup scripts
- [ ] Monitoring and alerting
- [ ] Database performance tuning
- [ ] Multi-region deployment

### 📝 Notes

- Default PostgreSQL password should be changed in production
- Always backup data before migration
- Review security settings before deployment
- Set up automated backups in production

---

**Migration completed successfully!** 🎉

For support, see documentation or open an issue on GitHub.