Implement send notification

Library/Network/ExtensionPlatformInterface.swift

@@ -1,6 +1,7 @@
 import Foundation
 import Libbox
 import NetworkExtension
+import UserNotifications
 #if canImport(CoreWLAN)
     import CoreWLAN
 #endif
@@ -338,4 +339,28 @@ public class ExtensionPlatformInterface: NSObject, LibboxPlatformInterfaceProtoc
     func reset() {
         networkSettings = nil
     }
+
+    public func send(_ notification: LibboxNotification?) throws {
+        #if !os(tvOS)
+            guard let notification else {
+                return
+            }
+            let center = UNUserNotificationCenter.current()
+            let content = UNMutableNotificationContent()
+
+            content.title = notification.title
+            content.subtitle = notification.subtitle
+            content.body = notification.body
+            if !notification.openURL.isEmpty {
+                content.userInfo["OPEN_URL"] = notification.openURL
+                content.categoryIdentifier = "OPEN_URL"
+            }
+            content.interruptionLevel = .active
+            let request = UNNotificationRequest(identifier: notification.identifier, content: content, trigger: nil)
+            try runBlocking {
+                try await center.requestAuthorization(options: [.alert])
+                try await center.add(request)
+            }
+        #endif
+    }
 }