feat: Add OpenAI and Azure AI API endpoints with connection testing functionality

app/api/openai.py

@@ -0,0 +1,75 @@
+"""
+OpenAI API endpoints
+"""
+from fastapi import APIRouter, Request, HTTPException, status
+import logging
+import os
+import requests
+
+from app.auth import require_login
+from app.config import settings
+
+# Set up logging
+logger = logging.getLogger(__name__)
+
+router = APIRouter()
+
+@router.get("/openai/test")
+@require_login
+async def test_openai_connection(request: Request):
+    """
+    Test if the configured OpenAI API key is valid.
+    """
+    try:
+        import openai
+        
+        logger.info("Testing OpenAI API key validity")
+        
+        # Check if API key is configured
+        if not settings.openai_api_key:
+            logger.warning("No OpenAI API key configured")
+            return {
+                "status": "error",
+                "message": "No OpenAI API key is configured"
+            }
+        
+        # Configure the client
+        client = openai.OpenAI(api_key=settings.openai_api_key)
+        
+        # Try to make a simple request to validate the key
+        try:
+            # Use a models list endpoint as a simple validation
+            models = client.models.list()
+            
+            # If we got here, the key is valid
+            logger.info("OpenAI API key is valid")
+            return {
+                "status": "success",
+                "message": "OpenAI API key is valid",
+                "models_available": len(models.data) if hasattr(models, "data") else "Unknown"
+            }
+        except Exception as e:
+            error_msg = str(e)
+            logger.error(f"OpenAI API key test failed: {error_msg}")
+            
+            # Determine if this is an authentication error
+            is_auth_error = "auth" in error_msg.lower() or "api key" in error_msg.lower()
+            
+            return {
+                "status": "error",
+                "message": f"API key validation failed: {error_msg}",
+                "is_auth_error": is_auth_error
+            }
+    
+    except ImportError:
+        logger.exception("OpenAI package not installed")
+        return {
+            "status": "error",
+            "message": "OpenAI package not installed"
+        }
+    except Exception as e:
+        logger.exception("Unexpected error testing OpenAI connection")
+        return {
+            "status": "error",
+            "message": f"Unexpected error: {str(e)}"
+        }