feat: added an error window when the update failed

Kit/helpers.swift

@@ -1372,3 +1372,14 @@ public func iconFromSymbol(name: String, scale: NSImage.SymbolScale) -> NSImage?
     }
     return nil
 }
+
+public func showAlert(_ message: String, _ information: String? = nil, _ style: NSAlert.Style = .informational) {
+    let alert = NSAlert()
+    alert.messageText = message
+    if let information = information {
+        alert.informativeText = information
+    }
+    alert.addButton(withTitle: "OK")
+    alert.alertStyle = style
+    alert.runModal()
+}

Kit/plugins/Updater.swift

@@ -165,7 +165,7 @@ public class Updater {
         downloadTask.resume()
     }
     
-    public func install(path: String) {
+    public func install(path: String, completion: @escaping (_ error: String?) -> Void) {
         let pwd = Bundle.main.bundleURL.absoluteString
             .replacingOccurrences(of: "file://", with: "")
             .replacingOccurrences(of: "Stats.app", with: "")
@@ -173,13 +173,13 @@ public class Updater {
         let dmg = path.replacingOccurrences(of: "file://", with: "")
         
         if !FileManager.default.isWritableFile(atPath: pwd) {
-            print("has no write permission on \(pwd)")
+            completion("has no write permission on \(pwd)")
             return
         }
         
         let diff = (Int(Date().timeIntervalSince1970) - self.lastInstallTS) / 60
         if diff <= 3 {
-            print("last install was \(diff) minutes ago, stopping...")
+            completion("last install was \(diff) minutes ago, stopping...")
             return
         }
         

Stats/AppDelegate.swift

@@ -103,7 +103,11 @@ class AppDelegate: NSObject, NSApplicationDelegate, UNUserNotificationCenterDele
             debug("Downloading new version of app...")
             if let url = URL(string: uri) {
                 updater.download(url, completion: { path in
-                    updater.install(path: path)
+                    updater.install(path: path) { error in
+                        if let error {
+                            showAlert("Error update Stats", error, .critical)
+                        }
+                    }
                 })
             }
         }

Stats/Views/Update.swift

@@ -284,6 +284,10 @@ private class UpdateView: NSView {
     }
     
     @objc private func install(_ sender: Any) {
-        updater.install(path: self.path)
+        updater.install(path: self.path) { error in
+            if let error {
+                showAlert("Error update Stats", error, .critical)
+            }
+        }
     }
 }

Stats/helpers.swift

@@ -159,7 +159,11 @@ extension AppDelegate {
             if silent {
                 if let url = URL(string: version.url) {
                     updater.download(url, completion: { path in
-                        updater.install(path: path)
+                        updater.install(path: path) { error in
+                            if let error {
+                                showAlert("Error update Stats", error, .critical)
+                            }
+                        }
                     })
                 }
                 return