# Quick Start - PostgreSQL Migration to Ubuntu Server

## What's Changed

✅ **Port**: Changed from 5000 to **5100**  
✅ **Database**: Switched from MongoDB to **PostgreSQL**  
✅ **Server**: Configured for **192.168.10.130**

## Files Created/Updated

### New Files

- `backend/postgresql_models.py` - PostgreSQL database models
- `backend/migrate_to_postgresql.py` - Migration script
- `POSTGRESQL_DEPLOYMENT_GUIDE.md` - Complete deployment guide
- `ubuntu-setup-postgresql.sh` - Automated setup script

### Updated Files

- `backend/requirements.txt` - Now uses SQLAlchemy and psycopg2-binary
- `backend/.env` - Updated for PostgreSQL and port 5100
- `backend/.env.example` - Updated template
- `backend/.env.ubuntu` - Ubuntu deployment config
- `backend/app.py` - Updated imports (need to complete routes conversion)
- `frontend/package.json` - Proxy updated to port 5100

---

## 🚀 Quick Deployment Steps

### 1. SSH to Ubuntu Server

```powershell
# From Windows
ssh username@192.168.10.130
```

### 2. Transfer Files

```powershell
# From Windows PowerShell (in another window)
scp -r "E:\Documents\Website Projects\Church_SongLyric" username@192.168.10.130:/tmp/
```

### 3. Run Setup Script on Ubuntu

```bash
# On Ubuntu server
sudo mv /tmp/Church_SongLyric /var/www/church-songlyric
cd /var/www/church-songlyric
chmod +x ubuntu-setup-postgresql.sh
./ubuntu-setup-postgresql.sh
```

The script will:

- Install PostgreSQL
- Create database and user
- Install all dependencies
- Migrate your data
- Configure services
- Start everything

### 4. Access Application

Open browser to: `http://192.168.10.130`

---

## 📋 Before You Start

### On Windows (Local Machine)

1. **Update Python dependencies**:

```powershell
cd "E:\Documents\Website Projects\Church_SongLyric\backend"
.\venv\Scripts\activate
pip install -r requirements.txt
```

2. **Test migration locally** (optional):

```powershell
# Install PostgreSQL on Windows first, then:
python migrate_to_postgresql.py
```

3. **Test backend locally**:

```powershell
python app.py
# Should start on port 5100
```

4. **Update frontend**:

```powershell
cd ..\frontend
npm install
npm start
# Should proxy to port 5100
```

---

## 🔧 Manual Setup (if not using script)

See **POSTGRESQL_DEPLOYMENT_GUIDE.md** for step-by-step manual installation.

---

## ⚠️ Important Notes

### PostgreSQL Connection String Format

```
postgresql://username:password@host:port/database
```

Example:

```
POSTGRESQL_URI=postgresql://songlyric_user:MySecurePass123@192.168.10.130:5432/church_songlyric
```

### Port 5100 Usage

The backend now runs on **port 5100** instead of 5000. Update any:

- Firewall rules
- API endpoint references
- Mobile device configurations
- External access configurations

### Database Migration

Your existing data from `data.json` will be automatically migrated to PostgreSQL during setup.

---

## 🛠️ Troubleshooting

### Can't connect to PostgreSQL

```bash
# Test connection
psql -h 192.168.10.130 -U songlyric_user -d church_songlyric

# Check if PostgreSQL is listening
sudo netstat -tulpn | grep 5432
```

### Backend won't start

```bash
# Check logs
sudo journalctl -u church-songlyric-backend -n 50

# Test manually
cd /var/www/church-songlyric/backend
source venv/bin/activate
python app.py
```

### Port 5100 not accessible

```bash
# Check if running
sudo netstat -tulpn | grep 5100

# Check firewall
sudo ufw status
sudo ufw allow 5100/tcp
```

---

## 📝 Management Commands

```bash
# Service management
sudo systemctl status church-songlyric-backend
sudo systemctl restart church-songlyric-backend
sudo systemctl stop church-songlyric-backend

# View logs
sudo journalctl -u church-songlyric-backend -f

# Database access
sudo -u postgres psql
\c church_songlyric
\dt  # List tables
```

---

## 🔐 Security Checklist

- [ ] Change PostgreSQL password from default
- [ ] Update SECRET_KEY in .env
- [ ] Configure firewall rules
- [ ] Backup database regularly
- [ ] Use strong passwords

---

## 📊 Database Backup

```bash
# Backup
pg_dump -h 192.168.10.130 -U songlyric_user church_songlyric > backup_$(date +%Y%m%d).sql

# Restore
psql -h 192.168.10.130 -U songlyric_user -d church_songlyric < backup_20241207.sql
```

---

## Next Steps After Deployment

1. ✅ Test all features (add songs, create profiles, etc.)
2. ✅ Verify data was migrated correctly
3. ✅ Test from mobile devices on same network
4. ✅ Setup regular database backups
5. ✅ Configure SSL (optional, for HTTPS)

---

**Need Help?** See `POSTGRESQL_DEPLOYMENT_GUIDE.md` for detailed instructions!