//
//  AppDelegate.swift
//  copinism
//
//  Created by 黄仕杰 on 2024/6/7.
//

import UIKit
import UserNotifications

class AppDelegate: UIResponder, UIApplicationDelegate {
    
    //当应用程序启动后，可能需要进行其他逻辑处理时调用的方法
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // 请求推送通知权限
        UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge, .sound]) { granted, error in
            if granted {
                DispatchQueue.main.async {
                    application.registerForRemoteNotifications()
                }
            }
        }
        return true
    }

    /// 当设备成功注册推送通知时调用。用来获取设备令牌并发送到服务器
    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        // 获取 deviceToken
        let tokenParts = deviceToken.map { data in String(format: "%02.2hhx", data) }
        let token = tokenParts.joined()
        print("Device Token: \(token)")
        
        // 将 deviceToken 发送到服务器
        sendDeviceTokenToServer(token: token)
    }
    
    // 当设备未能注册推送通知时调用。用来处理和记录错误信息
    func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
        print("Failed to register: \(error)")
    }

    private func sendDeviceTokenToServer(token: String) {
        // 服务器的 API URL
        let url = URL(string: "https://yourserver.com/api/deviceToken")!
        
        // 设备信息
        let parameters: [String: Any] = [
            "deviceToken": token,
            "deviceType": "iOS"
        ]

        // 使用 URLSession 发送请求
        var request = URLRequest(url: url)
        request.httpMethod = "POST"
        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
        request.httpBody = try? JSONSerialization.data(withJSONObject: parameters)

        let task = URLSession.shared.dataTask(with: request) { data, response, error in
            if let error = error {
                print("Error sending device token: \(error)")
                return
            }
            print("Device token sent successfully")
        }
        task.resume()
    }
}