Implemented Oauth

backend/.env.example

@@ -0,0 +1,28 @@
+# Database
+DATABASE_URL="postgresql://user:password@localhost:5432/travel_policy_db?schema=public"
+
+# JWT Secret for token generation
+JWT_SECRET="your-secret-jwt-key-here-change-this-in-production"
+
+# Session Secret
+SESSION_SECRET="your-session-secret-key-here-change-this-in-production"
+
+# Google OAuth Credentials
+# Get these from https://console.cloud.google.com/
+GOOGLE_CLIENT_ID="your-google-client-id.apps.googleusercontent.com"
+GOOGLE_CLIENT_SECRET="your-google-client-secret"
+GOOGLE_CALLBACK_URL="http://localhost:5000/auth/google/callback"
+
+# Frontend URL (for CORS and redirects)
+FRONTEND_URL="http://localhost:5173"
+
+# Server Configuration
+PORT=5000
+NODE_ENV="development"
+
+# Email Configuration (if using nodemailer)
+EMAIL_HOST="smtp.gmail.com"
+EMAIL_PORT=587
+EMAIL_USER="your-email@example.com"
+EMAIL_PASSWORD="your-email-password-or-app-password"
+EMAIL_FROM="noreply@example.com"