refactor: optimize structure, stability and runtime performance

routes/admin_api/security.py

@@ -62,6 +62,19 @@ def _parse_bool(value: Any) -> bool:
     return text in {"1", "true", "yes", "y", "on"}
 
 
+def _parse_int(value: Any, *, default: int | None = None, min_value: int | None = None) -> int | None:
+    try:
+        parsed = int(value)
+    except Exception:
+        parsed = default
+
+    if parsed is None:
+        return None
+    if min_value is not None:
+        parsed = max(int(min_value), parsed)
+    return parsed
+
+
 def _sanitize_threat_event(event: dict) -> dict:
     return {
         "id": event.get("id"),
@@ -199,10 +212,7 @@ def ban_ip():
     if not reason:
         return jsonify({"error": "reason不能为空"}), 400
 
-    try:
-        duration_hours = max(1, int(duration_hours_raw))
-    except Exception:
-        duration_hours = 24
+    duration_hours = _parse_int(duration_hours_raw, default=24, min_value=1) or 24
 
     ok = blacklist.ban_ip(ip, reason, duration_hours=duration_hours, permanent=permanent)
     if not ok:
@@ -235,20 +245,14 @@ def ban_user():
     duration_hours_raw = data.get("duration_hours", 24)
     permanent = _parse_bool(data.get("permanent", False))
 
-    try:
-        user_id = int(user_id_raw)
-    except Exception:
-        user_id = None
+    user_id = _parse_int(user_id_raw)
 
     if user_id is None:
         return jsonify({"error": "user_id不能为空"}), 400
     if not reason:
         return jsonify({"error": "reason不能为空"}), 400
 
-    try:
-        duration_hours = max(1, int(duration_hours_raw))
-    except Exception:
-        duration_hours = 24
+    duration_hours = _parse_int(duration_hours_raw, default=24, min_value=1) or 24
 
     ok = blacklist._ban_user_internal(user_id, reason=reason, duration_hours=duration_hours, permanent=permanent)
     if not ok:
@@ -262,10 +266,7 @@ def unban_user():
     """解除用户封禁"""
     data = _parse_json()
     user_id_raw = data.get("user_id")
-    try:
-        user_id = int(user_id_raw)
-    except Exception:
-        user_id = None
+    user_id = _parse_int(user_id_raw)
 
     if user_id is None:
         return jsonify({"error": "user_id不能为空"}), 400