# Database Setup & Troubleshooting

## Initial Setup

**✅ Migrations now run automatically!** When you start the API, it will automatically run any pending database migrations.

### Quick Setup

```bash
# 1. Start containers
docker-compose up -d --build

# 2. Wait for MySQL to be healthy and migrations to complete (about 30 seconds)
docker-compose logs -f api

# You should see:
# 🔄 Running database migrations...
# ✅ Database migrations completed successfully
# API server running on port 3301

# 3. Verify tables were created (optional)
docker exec voxblog-mysql mysql -u voxblog -pvoxblogAppPass123! voxblog -e "SHOW TABLES;"
```

### Manual Migration (if needed)

You can still run migrations manually if needed:
```bash
docker exec voxblog-api sh -c "cd /app/apps/api && pnpm drizzle:migrate"
```

Expected output:
```
Tables_in_voxblog
__drizzle_migrations
audio_clips
posts
settings
```

## Common Issues

### 1. Access Denied Error

**Error**: `Access denied for user 'voxblog'@'172.20.0.3' (using password: YES)`

**Cause**: MySQL container was created with old/different passwords

**Solution**: Reset the database volume and restart
```bash
docker-compose down -v
docker-compose up -d --build
# Wait 30 seconds for MySQL to initialize
docker exec voxblog-api sh -c "cd /app/apps/api && pnpm drizzle:migrate"
```

### 2. Tables Don't Exist

**Error**: `Table 'voxblog.posts' doesn't exist`

**Cause**: Migrations failed to run automatically (check API logs)

**Solution**: Check API logs for migration errors
```bash
docker-compose logs api | grep -i migration

# If migrations failed, restart the API
docker-compose restart api

# Or run migrations manually
docker exec voxblog-api sh -c "cd /app/apps/api && pnpm drizzle:migrate"
```

### 3. MySQL Container Not Healthy

**Error**: API can't connect to database

**Solution**: Check MySQL logs and wait for it to be healthy
```bash
docker-compose logs mysql
docker-compose ps  # Check if mysql is "healthy"
```

## Database Schema

The application uses Drizzle ORM with MySQL. Schema is defined in:
- `apps/api/src/db/schema.ts`

### Tables

1. **posts** - Blog posts with metadata
   - id, title, content_html, tags_text, feature_image
   - canonical_url, prompt, status
   - ghost_post_id, ghost_slug, ghost_published_at, ghost_url
   - selected_image_keys, generated_draft, image_placeholders
   - version, created_at, updated_at

2. **audio_clips** - Audio recordings for posts
   - id, post_id, bucket, object_key, mime
   - transcript, duration_ms, created_at

3. **settings** - Application settings
   - id, key, value, updated_at

## Migrations

### Location
- Migration files: `apps/api/drizzle/`
- Config: `apps/api/drizzle.config.ts`

### Commands

```bash
# Generate new migration (after schema changes)
docker exec voxblog-api sh -c "cd /app/apps/api && pnpm drizzle:generate"

# Run migrations
docker exec voxblog-api sh -c "cd /app/apps/api && pnpm drizzle:migrate"
```

## Environment Variables

Database connection uses these variables from `.env`:

```env
# MySQL Root
MYSQL_ROOT_PASSWORD=voxblogRootPass123!

# Application User
MYSQL_PASSWORD=voxblogAppPass123!
DB_HOST=mysql
DB_PORT=3306
DB_USER=voxblog
DB_PASSWORD=voxblogAppPass123!
DB_NAME=voxblog
```

**Important**: If you change these values, you must recreate the MySQL container:
```bash
docker-compose down -v
docker-compose up -d --build
```

## Backup & Restore

### Backup

```bash
# Backup all data
docker exec voxblog-mysql mysqldump -u voxblog -pvoxblogAppPass123! voxblog > backup.sql

# Backup specific table
docker exec voxblog-mysql mysqldump -u voxblog -pvoxblogAppPass123! voxblog posts > posts_backup.sql
```

### Restore

```bash
# Restore from backup
docker exec -i voxblog-mysql mysql -u voxblog -pvoxblogAppPass123! voxblog < backup.sql
```

## Reset Database

**WARNING: This deletes all data!**

```bash
# Complete reset
docker-compose down -v
docker-compose up -d --build

# Wait for MySQL to be healthy
sleep 30

# Run migrations
docker exec voxblog-api sh -c "cd /app/apps/api && pnpm drizzle:migrate"
```

## Verify Database

```bash
# Check if containers are running
docker-compose ps

# Check MySQL is healthy
docker-compose ps mysql

# List tables
docker exec voxblog-mysql mysql -u voxblog -pvoxblogAppPass123! voxblog -e "SHOW TABLES;"

# Count posts
docker exec voxblog-mysql mysql -u voxblog -pvoxblogAppPass123! voxblog -e "SELECT COUNT(*) FROM posts;"

# Check migrations
docker exec voxblog-mysql mysql -u voxblog -pvoxblogAppPass123! voxblog -e "SELECT * FROM __drizzle_migrations;"
```

## Troubleshooting Checklist

- [ ] MySQL container is running and healthy
- [ ] Environment variables are correct in `.env`
- [ ] Migrations have been run
- [ ] Tables exist in database
- [ ] API can connect to database (check logs)

---

**Last Updated**: 2025-10-26