Add better error handling for custom endpoint

- Add detailed error logging for fetch failures
- Catch and report connection errors
- Show HTTP status codes and error messages
- Log endpoint URL for debugging

app/api/ask-ai/route.ts

@@ -146,14 +146,21 @@ export async function POST(request: NextRequest) {
             headers["Authorization"] = `Bearer ${customApiKey}`;
           }
 
+          console.log("Fetching from custom endpoint:", customEndpoint);
+
           const apiResponse = await fetch(`${customEndpoint}/chat/completions`, {
             method: "POST",
             headers,
             body: JSON.stringify(requestBody),
+          }).catch((err) => {
+            console.error("Fetch error:", err);
+            throw new Error(`Failed to connect to custom endpoint: ${err.message}`);
           });
 
           if (!apiResponse.ok) {
-            throw new Error(`Custom endpoint error: ${apiResponse.statusText}`);
+            const errorText = await apiResponse.text().catch(() => "Unknown error");
+            console.error("API response error:", apiResponse.status, errorText);
+            throw new Error(`Custom endpoint returned ${apiResponse.status}: ${errorText}`);
           }
 
           const reader = apiResponse.body?.getReader();
@@ -414,14 +421,21 @@ export async function PUT(request: NextRequest) {
         headers["Authorization"] = `Bearer ${customApiKey}`;
       }
 
+      console.log("Fetching from custom endpoint (PUT):", customEndpoint);
+
       const apiResponse = await fetch(`${customEndpoint}/chat/completions`, {
         method: "POST",
         headers,
         body: JSON.stringify(requestBody),
+      }).catch((err) => {
+        console.error("Fetch error (PUT):", err);
+        throw new Error(`Failed to connect to custom endpoint: ${err.message}`);
       });
 
       if (!apiResponse.ok) {
-        throw new Error(`Custom endpoint error: ${apiResponse.statusText}`);
+        const errorText = await apiResponse.text().catch(() => "Unknown error");
+        console.error("API response error (PUT):", apiResponse.status, errorText);
+        throw new Error(`Custom endpoint returned ${apiResponse.status}: ${errorText}`);
       }
 
       const data = await apiResponse.json();