如何使用Swift中的条件触发Firebase中的通知？

import Firebase
import FirebaseMessaging

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    FirebaseApp.configure()
    return true
}

extension AppDelegate: MessagingDelegate {
    func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String?) {
        // 在这里处理接收到的设备令牌
    }

    func messaging(_ messaging: Messaging, didReceive remoteMessage: MessagingRemoteMessage) {
        // 在这里处理接收到的远程通知
    }
}

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    // 注册通知权限
    UNUserNotificationCenter.current().delegate = self
    UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge, .sound]) { (granted, error) in
        if granted {
            DispatchQueue.main.async {
                UIApplication.shared.registerForRemoteNotifications()
            }
        }
    }
    return true
}

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    // 获取设备令牌
    let token = deviceToken.map { String(format: "%02.2hhx", $0) }.joined()
    Messaging.messaging().apnsToken = deviceToken
    Messaging.messaging().setAPNSToken(deviceToken, type: .prod)
}

func sendNotification() {
    let message = [
        "notification": [
            "title": "Notification Title",
            "body": "Notification Body"
        ],
        "to": "DEVICE_TOKEN"
    ]
    
    let urlString = "https://fcm.googleapis.com/fcm/send"
    guard let url = URL(string: urlString) else { return }
    
    var request = URLRequest(url: url)
    request.httpMethod = "POST"
    request.setValue("application/json", forHTTPHeaderField: "Content-Type")
    request.setValue("key=YOUR_SERVER_KEY", forHTTPHeaderField: "Authorization")
    
    guard let httpBody = try? JSONSerialization.data(withJSONObject: message, options: []) else { return }
    request.httpBody = httpBody
    
    let session = URLSession.shared
    session.dataTask(with: request) { (data, response, error) in
        if let error = error {
            print("Error sending notification: \(error.localizedDescription)")
        }
    }.resume()
}