feat: add PostgreSQL database adapter support

README.md

@@ -88,7 +88,14 @@ euchre_camp/
 
 - Node.js 20+
 - npm or yarn
-- SQLite3
+- **SQLite3** (default) or **PostgreSQL** (optional)
+
+**For SQLite (default):**
+- No additional setup required
+
+**For PostgreSQL:**
+- PostgreSQL 12+ installed and running
+- Create a database for EuchreCamp
 
 ### Installation
 
@@ -103,13 +110,31 @@ euchre_camp/
     npm install
     ```
 
-3. **Set up the database**
+3. **Set up environment variables**
+    ```bash
+    cp .env.example .env
+    # Edit .env to configure your database
+    ```
+
+4. **Set up the database**
+
+   **For SQLite (default):**
     ```bash
     npx prisma migrate deploy
     npx prisma generate
     ```
 
-4. **Start the development server**
+   **For PostgreSQL:**
+    ```bash
+    # Set up PostgreSQL database
+    npm run db:setup-postgres
+    
+    # Or manually:
+    npx prisma migrate deploy
+    npx prisma generate
+    ```
+
+5. **Start the development server**
     ```bash
     npm run dev
     ```
@@ -119,11 +144,23 @@ euchre_camp/
 Create a `.env` file:
 
 ```env
+# Database Configuration
+DATABASE_PROVIDER=sqlite  # or "postgresql"
 DATABASE_URL="file:./dev.db"
+
+# Better Auth
 BETTER_AUTH_SECRET="your-secret-key-here"
 BETTER_AUTH_URL="http://localhost:3000"
 ```
 
+**Using PostgreSQL:**
+
+```env
+DATABASE_PROVIDER=postgresql
+DATABASE_URL="postgresql://username:password@localhost:5432/euchre_camp"
+DATABASE_SHADOW_URL="postgresql://username:password@localhost:5432/euchre_camp_shadow"
+```
+
 ## Usage
 
 ### Creating a Tournament
@@ -180,6 +217,20 @@ npm run test
 npm run test:acceptance
 ```
 
+### Database Commands
+
+```bash
+# Switch between SQLite and PostgreSQL
+npm run db:switch sqlite
+npm run db:switch postgresql
+
+# Set up PostgreSQL database
+npm run db:setup-postgres
+
+# Seed database with sample data
+npm run db:seed
+```
+
 ## Admin User Creation
 
 To create an admin user, use the provided scripts: