AI implementation for openai and claude.

backend/app/main.py

@@ -0,0 +1,51 @@
+import logging
+
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.responses import JSONResponse
+
+from .api import chat
+from .config import settings
+from .services.provider_manager import provider_manager
+
+# Setup logging
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
+
+app = FastAPI(
+    title="DevDen API", description="AI chat backend for DevDen", version="1.0.0"
+)
+
+# CORS Configuration
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=[settings.FRONTEND_URL, "http://localhost:3000"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# Include routers
+app.include_router(chat.router)
+
+
+@app.get("/health")
+async def health_check():
+    """Health check endpoint"""
+    return JSONResponse(
+        content={
+            "status": "healthy",
+            "providers": provider_manager.get_available_providers(),
+        }
+    )
+
+
+@app.on_event("startup")
+async def startup_event():
+    logger.info("DevDen API starting up...")
+    logger.info(f"Available providers: {provider_manager.get_available_providers()}")
+
+
+@app.on_event("shutdown")
+async def shutdown_event():
+    logger.info("DevDen API shutting down...")