UseAlphaCore warning.

ClashX/AppDelegate.swift

@@ -1089,6 +1089,22 @@ extension AppDelegate {
     }
 
     @IBAction func useAlphaMeta(_ sender: NSMenuItem) {
+        if UserDefaults.standard.object(forKey: "useAlphaCore") as? Bool == nil {
+            let alert = NSAlert()
+            alert.messageText = """
+If you don't know what you're doing, never turn this switch on.
+如果你不知道你在做什么, 请绝对不要打开这个开关.
+Running Meta Core without any authentication under sudo privileges can have devastating consequences.
+在sudo 权限下运行未经验证的 Meta 核心, 可能造成严重后果.
+"""
+            alert.alertStyle = .warning
+            alert.addButton(withTitle: NSLocalizedString("Continue", comment: ""))
+            alert.addButton(withTitle: NSLocalizedString("Cancel", comment: ""))
+            if alert.runModal() != .alertFirstButtonReturn {
+                return
+            }
+        }
+
         let use = sender.state != .on
         MenuItemFactory.useAlphaCore = use
         sender.state = use ? .on : .off