added 2 api keys

utils.py

@@ -19,16 +19,31 @@ def capture_output():
     finally:
         sys.stdout, sys.stderr = old_out, old_err
 
-
 def _execute_with_onecompiler(code: str, stdin: str, language: str, filename: str) -> Tuple[str, str, str]:
+    keys = [os.environ["ONECOMPILER_API_KEY"], os.environ["ONECOMPILER_API_KEY1"]]
+    first_key = random.choice(keys)
+
+    result = _call_onecompiler_api(first_key, code, stdin, language, filename)
+    
+    if _is_quota_or_invalid(result):
+        # Fallback: try all keys one-by-one until one works
+        for key in keys:
+            if key == first_key:
+                continue  # Already tried this one
+            result = _call_onecompiler_api(key, code, stdin, language, filename)
+            if not _is_quota_or_invalid(result):
+                return result
+    
+    return result  # Either success, or last failed response
+
+
+def _call_onecompiler_api(key: str, code: str, stdin: str, language: str, filename: str) -> Tuple[str, str, str]:
     url = "https://onecompiler-apis.p.rapidapi.com/api/v1/run"
     headers = {
         "Content-Type": "application/json",
         "x-rapidapi-host": "onecompiler-apis.p.rapidapi.com",
-        "x-rapidapi-key": os.environ["ONECOMPILER_API_KEY"]  # Secure access
+        "x-rapidapi-key": key
     }
-
-
     payload = {
         "language": language.lower(),
         "stdin": stdin,
@@ -52,11 +67,16 @@ def _execute_with_onecompiler(code: str, stdin: str, language: str, filename: st
             data.get("stderr", "") or "",
             data.get("exception", "")
         )
-
     except Exception as e:
         return "", "", str(e)
 
 
+def _is_quota_or_invalid(result: Tuple[str, str, str]) -> bool:
+    _, _, error = result
+    if not error:
+        return False
+    return any(token in error.lower() for token in ["quota", "e002", "e003", "invalid", "exhausted"])
+
 def execute_code(code: str, stdin: str = "", language: str = "cpp") -> Tuple[str, str, str]:
     try:
         if language == "Python":