Add environment variable loading and Stripe configuration endpoints

- Added dotenv loading in main.py to read .env file
- Enhanced health check endpoint to show Stripe and webhook configuration status
- Added /config/stripe endpoint to safely expose publishable key for frontend
- Environment variables are now properly loaded from .env file
- Added status indicators for proper configuration verification

main.py

@@ -1,8 +1,12 @@
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
+from dotenv import load_dotenv
 from app.api.payments import router as payments_router
 from app.db.base import engine, Base
 
+# Load environment variables from .env file
+load_dotenv()
+
 # Create database tables
 Base.metadata.create_all(bind=engine)
 
@@ -40,8 +44,30 @@ async def root():
 @app.get("/health")
 async def health_check():
     """Health check endpoint"""
+    import os
+
+    stripe_configured = bool(os.getenv("STRIPE_SECRET_KEY"))
+    webhook_configured = bool(os.getenv("STRIPE_WEBHOOK_SECRET"))
+
     return {
         "status": "healthy",
         "service": "stripe-payment-integration-service",
         "version": "1.0.0",
+        "stripe_configured": stripe_configured,
+        "webhook_configured": webhook_configured,
+    }
+
+
+@app.get("/config/stripe")
+async def get_stripe_config():
+    """Get Stripe publishable key for frontend use"""
+    import os
+
+    publishable_key = os.getenv("STRIPE_PUBLISHABLE_KEY")
+
+    return {
+        "publishable_key": publishable_key,
+        "test_mode": publishable_key.startswith("pk_test_")
+        if publishable_key
+        else False,
     }