Handle submit API response safely and avoid 500 crash

jd-webgui/app.py

@@ -1168,6 +1168,7 @@ def index():
 
 @app.post("/submit")
 def submit(url: str = Form(...), package_name: str = Form(""), library: str = Form("auto")):
+    try:
         ensure_env()
         url = url.strip()
         package_name = (package_name or "").strip() or "WebGUI"
@@ -1189,9 +1190,18 @@ def submit(url: str = Form(...), package_name: str = Form(""), library: str = Fo
             "packageName": package_name,
         }])
 
-    jobid = str(resp.get("id", ""))
+        jobid = ""
+        if isinstance(resp, dict):
+            jobid = str(resp.get("id", "")).strip()
+        elif isinstance(resp, (str, int)):
+            jobid = str(resp).strip()
+        elif isinstance(resp, list) and resp and isinstance(resp[0], dict):
+            jobid = str(resp[0].get("id", "")).strip()
+
         if not jobid:
-        return HTMLResponse(render_page(f"Unerwartete Antwort von add_links: {resp}"), status_code=500)
+            msg = f"Unerwartete Antwort von add_links (kein Job-ID): {resp!r}"
+            log_connection(msg)
+            return HTMLResponse(render_page(msg), status_code=502)
 
         with lock:
             jobs[jobid] = Job(
@@ -1208,6 +1218,9 @@ def submit(url: str = Form(...), package_name: str = Form(""), library: str = Fo
         t.start()
 
         return RedirectResponse(url="/", status_code=303)
+    except Exception as e:
+        log_connection(f"Submit-Fehler: {e}")
+        return HTMLResponse(render_page(f"Interner Fehler beim Absenden: {e}"), status_code=500)
 
 @app.post("/cancel/{jobid}")
 def cancel(jobid: str):