generate a macos notification using usernotifications.frameworks in swift

To generate a macOS notification using UserNotifications.frameworks, you can follow these steps:

1. First, you need to import the UserNotifications framework at the beginning of your Swift file:

   main.swift
   import UserNotifications
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2. Then, you need to request authorization from the user to show notifications. You can add the following code to your applicationDidFinishLaunching method in AppDelegate.swift:

   main.swift
   let center = UNUserNotificationCenter.current()
   center.requestAuthorization(options: [.alert, .badge, .sound]) { granted, error in
       if let error = error {
           // Handle the error here.
           print(error.localizedDescription)
       } else if granted {
           // Authorization granted.
           print("Authorization granted for notifications.")
       } else {
           // Authorization denied.
           print("Authorization denied for notifications.")
       }
   }
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3. Once you have authorization, you can create and schedule a notification. You can use the following code as an example:

   main.swift
   let content = UNMutableNotificationContent()
   content.title = NSString.localizedUserNotificationString(forKey: "Title", arguments: nil)
   content.subtitle = NSString.localizedUserNotificationString(forKey: "Subtitle", arguments: nil)
   content.body = NSString.localizedUserNotificationString(forKey: "Body", arguments: nil)
   content.sound = UNNotificationSound.default
   
   // Add an attachment
   if let url = Bundle.main.url(forResource: "Image", withExtension: "png") {
       if let attachment = try? UNNotificationAttachment(identifier: "Image", url: url, options: nil) {
           content.attachments = [attachment]
       }
   }
   
   // Configure the request
   let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 5, repeats: false)
   let request = UNNotificationRequest(identifier: "Notification", content: content, trigger: trigger)
   
   // Schedule the notification
   let center = UNUserNotificationCenter.current()
   center.add(request) { error in
       if let error = error {
           // Handle the error here.
           print(error.localizedDescription)
       } else {
           // Notification scheduled successfully.
           print("Notification scheduled.")
       }
   }
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   This code will create a notification with a title, subtitle, body, and an attached image. The notification will be scheduled to appear after 5 seconds.

4. Finally, you can handle user interaction with the notification by implementing the userNotificationCenter(_:didReceive:withCompletionHandler:) method in AppDelegate.swift:

   main.swift
   // Handle user interaction with notification
   func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
       // Perform the custom action associated with the notification.
       print("Handle notification here.")
       completionHandler()
   }
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That's it! You have successfully generated a macOS notification using UserNotifications.framework.