Add /api/test-supabase debug endpoint

backend/app/api/debug.py

@@ -0,0 +1,68 @@
+from fastapi import APIRouter
+import os
+import json
+from datetime import datetime
+from supabase import create_client, Client
+
+router = APIRouter()
+
+@router.get("/test-supabase", summary="Debug Supabase Connection")
+async def test_supabase():
+    """
+    Debug endpoint to test Supabase connection and insertion.
+    WARNING: Public endpoint for debugging only. Remove after use.
+    """
+    results = {
+        "timestamp": datetime.now().isoformat(),
+        "env_vars": {},
+        "connection": "pending",
+        "insert": "pending",
+        "error": None
+    }
+
+    # 1. Check Env Vars
+    url = os.getenv("SUPABASE_URL")
+    key = os.getenv("SUPABASE_ANON_KEY") or os.getenv("SUPABASE_SERVICE_ROLE_KEY")
+    enable_metrics = os.getenv("ENABLE_METRICS_LOGGING", "false").lower() == "true"
+
+    results["env_vars"] = {
+        "SUPABASE_URL_SET": bool(url),
+        "SUPABASE_KEY_SET": bool(key),
+        "ENABLE_METRICS_LOGGING": enable_metrics,
+        "ENABLE_METRICS_LOGGING_RAW": os.getenv("ENABLE_METRICS_LOGGING")
+    }
+
+    if not url or not key:
+        results["connection"] = "failed"
+        results["error"] = "Missing SUPABASE_URL or SUPABASE_KEY env vars"
+        return results
+
+    # 2. Connect
+    try:
+        supabase: Client = create_client(url, key)
+        results["connection"] = "success"
+    except Exception as e:
+        results["connection"] = "failed"
+        results["error"] = f"Client init failed: {str(e)}"
+        return results
+
+    # 3. Test Insert
+    payload = {
+        "question": "DEBUG_ENDPOINT_PROBE",
+        "answer": "This is a test row from /api/test-supabase",
+        "provenance": "debug_endpoint",
+        "user_id": "debug_user"
+    }
+    
+    try:
+        response = supabase.table("metrics_chat_answers").insert(payload).execute()
+        results["insert"] = "success"
+        results["data"] = response.data
+    except Exception as e:
+        results["insert"] = "failed"
+        results["error"] = f"Insert failed: {str(e)}"
+        # Add hint about RLS
+        if "policy" in str(e).lower() or "permission" in str(e).lower():
+            results["hint"] = "Check Row Level Security (RLS) policies for 'metrics_chat_answers' table."
+
+    return results

backend/app/main.py

@@ -1,7 +1,7 @@
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 from .api.router import api_router
-
+from .api.debug import router as debug_router
 
 def get_application() -> FastAPI:
     app = FastAPI(
@@ -24,6 +24,7 @@ def get_application() -> FastAPI:
     )
 
     app.include_router(api_router, prefix="/api")
+    app.include_router(debug_router, prefix="/api")
 
     # Serve static files (Frontend)
     import os