Optimize: Only add auto group when has more than one proxies .

ClashX/General/ConfigFileFactory.swift

@@ -22,6 +22,11 @@ class ConfigFileFactory {
         
         sampleConfigStr = sampleConfigStr?.replacingOccurrences(of: "{{ProxyPlaceHolder}}", with: proxyStr)
         sampleConfigStr = sampleConfigStr?.replacingOccurrences(of: "{{ProxyGroupPlaceHolder}}", with: proxyGroupStr)
+        
+        if proxies.count > 1 {
+            let autoGroupStr = "ProxyAuto = url-test, \(proxyGroupStr), http://www.google.com/generate_204, 300"
+            sampleConfigStr = sampleConfigStr?.replacingOccurrences(of: "{{ProxyAutoGroupPlaceHolder}}", with: autoGroupStr)
+        }
 
         return sampleConfigStr!
     }

ClashX/Support Files/sampleConfig.ini

@@ -13,7 +13,7 @@ Proxy = select, {{ProxyGroupPlaceHolder}}
 # url-test select which proxy will be used by benchmarking speed to a URL.
 # name = url-test, [proxys], url, interval(second)
 
-ProxyAuto = url-test, {{ProxyGroupPlaceHolder}}, http://www.google.com/generate_204, 300
+{{ProxyAutoGroupPlaceHolder}}
 
 
 [Rule]

ClashX/ViewControllers/PreferencesWindowController.swift

@@ -132,8 +132,26 @@ class PreferencesWindowController: NSWindowController
             shakeWindows()
             return
         }
+        var vaild = true
+        var remarkSet = Set<String>()
+        remarkSet.insert("Proxy")
+        remarkSet.insert("ProxyAuto")
+        for config in serverConfigs {
+            if remarkSet.contains(config.remark) || !config.isValid() {
+                vaild = false
+                break
+            } else {
+                remarkSet.insert(config.remark)
+            }
+        }
+        
+        if (!vaild) {
+            self.shakeWindows()
+            return
+        }
+        
         let str = ConfigFileFactory.configFile(proxies: serverConfigs)
-        ConfigFileFactory.saveToClashConfigFile(str)
+        ConfigFileFactory.saveToClashConfigFile(str: str)
         window?.performClose(nil)
 
     }