Update .env.example

Author: Uaghazade1

.env.example

@@ -1,19 +1,33 @@
-# Supabase Configuration
+# Database Configuration
+# Choose your database provider: 'supabase' (default) or 'postgresql'
+DATABASE_PROVIDER=supabase
+
+# Supabase Configuration (default)
 NEXT_PUBLIC_SUPABASE_URL=your_supabase_project_url
 NEXT_PUBLIC_SUPABASE_ANON_KEY=your_supabase_anon_key
 SUPABASE_SERVICE_ROLE_KEY=your_supabase_service_role_key
 
+# PostgreSQL Configuration (for Supabase connection)
+DATABASE_URL=postgresql://postgres:[password]@[host]:[port]/postgres
+DIRECT_URL=postgresql://postgres:[password]@[host]:[port]/postgres
+
+# Local PostgreSQL Configuration (optional - for local development)
+# Only needed when DATABASE_PROVIDER=postgresql
+# DATABASE_URL=postgresql://username:password@localhost:5432/kanba_db
+# DIRECT_URL=postgresql://username:password@localhost:5432/kanba_db
+
 # Stripe Configuration (optional)
 STRIPE_SECRET_KEY=your_stripe_secret_key
 NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY=your_stripe_publishable_key
 STRIPE_WEBHOOK_SECRET=your_stripe_webhook_secret
 
-# Next.js Configuration
+# Site Configuration
+NEXT_PUBLIC_SITE_URL=http://localhost:3000
 NEXTAUTH_URL=http://localhost:3000
 NEXTAUTH_SECRET=your_nextauth_secret
 
-# Site URL for production
-NEXT_PUBLIC_SITE_URL=http://localhost:3000
-
-# Link Preview API Key for Bookmarks
-LINKPREVIEW_API_KEY = 'f1....';
+# Example PostgreSQL connection strings:
+# Local PostgreSQL: postgresql://username:password@localhost:5432/kanba_db
+# Docker PostgreSQL: postgresql://postgres:password@localhost:5432/kanba_db
+# Railway PostgreSQL: postgresql://username:password@host:port/database
+# Supabase PostgreSQL: postgresql://postgres:[password]@[host]:[port]/postgres