// AppDelegate.swift
import TalkPlus
import KlatUIKit

func application(_ application: UIApplication, 
   didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool 
{
   // KLAT SDK (채팅 SDK) 초기화, 앱 실행 후 최초 1회 실행
   let KLAT_APP_ID = "<YOUR_APP_ID>"
   TalkPlus.sharedInstance().initWithAppId(KLAT_APP_ID)
   return true
}

import TalkPlus
import KlatUIKit
               
// 익명 로그인
func signIn() {
   let signInParams = TPLoginParams(loginType: TPLoginType.anonymous, userId: "<USER_ID>")
   signInParams?.userName = "<NICK_NAME>"
   
   TalkPlus.sharedInstance()?.login(signInParams, success: { [weak self] tpUser in
       guard let self = self else { return }
       ///showChannelListViewController()
       ///showChatMessageViewController(channelId: "<CHANNEL_ID>")
   }, failure: { [weak self] (errorCode, error) in

   })
}

import TalkPlus
import KlatUIKit
               
// 토큰 로그인
func signIn() {
   let signInParams = TPLoginParams(loginType: TPLoginType.token, userId: "<USER_ID>")
   signInParams?.userName = "<NICK_NAME>"
   signInParams?.userName = "<USER_TOKEN>"
   
   TalkPlus.sharedInstance()?.login(signInParams, success: { [weak self] tpUser in
       guard let self = self else { return }
       ///showChannelListViewController()
       ///showChatMessageViewController(channelId: "<CHANNEL_ID>")
   }, failure: { [weak self] (errorCode, error) in

   })
}

import TalkPlus
import KlatUIKit
                
// 로그인 성공 후, 채팅 목록 화면으로 이동하기
func showChannelListViewController() {
    let bundle = Bundle(for: KlatChannelListViewController.self)
    let nibName = String(describing: KlatChannelListViewController.self)
    let klatUIKitVC = KlatChannelListViewController(nibName: nibName, bundle: bundle)
    showViewController(viewController: klatUIKitVC)
}

// 채널 식별자 값으로 채널 객체 (TPChannel) 가져오기
func getChannel(channelID:String) async -> (Bool, Error?, TPChannel?) {
    return await withCheckedContinuation { continuation in
        TalkPlus.sharedInstance()?.getChannel(channelID, success: { channel in
            continuation.resume(returning: (true, nil, channel))
        }, failure: { (errorCode, error) in
            continuation.resume(returning: (false, error, nil))
        })
    }
}

// 채팅 목록 화면 노출
func showViewController(viewController:UIViewController) {
    if let scene = UIApplication.shared.connectedScenes.first as? UIWindowScene,
       let windowScene = scene.delegate as? UIWindowSceneDelegate,
       let window = windowScene.window
    {
        guard let window = window else { return }
        UIView.transition(with: window, duration: 0.5, 
                          options: .transitionCrossDissolve, animations: {
            window.rootViewController = UINavigationController(rootViewController: viewController)
        }, completion: nil)
    }
}

import TalkPlus
import KlatUIKit
                
// 로그인 성공 후, 채팅 화면으로 이동하기 (채널이 이미 생성되어 채널 식별자 값이 있는 경우)
func showChatMessageViewController(channelId:String) {
    Task {
        let result = await getChannel(channelID: channelId)
        guard let channel = result.2 else { return }
        let bundle = Bundle(for: KlatChatMessageViewController.self)
        let nibName = String(describing: KlatChatMessageViewController.self)
        let klatUIKitVC = KlatChatMessageViewController(nibName: nibName, bundle: bundle)
        klatUIKitVC.chatChannel = channel
        await MainActor.run {
            showViewController(viewController: klatUIKitVC)
        }
    }
}

// 채널 식별자 값으로 채널 객체 (TPChannel) 가져오기
func getChannel(channelID:String) async -> (Bool, Error?, TPChannel?) {
    return await withCheckedContinuation { continuation in
        TalkPlus.sharedInstance()?.getChannel(channelID, success: { channel in
            continuation.resume(returning: (true, nil, channel))
        }, failure: { (errorCode, error) in
            continuation.resume(returning: (false, error, nil))
        })
    }
}

// 채팅 화면 노출
func showViewController(viewController:UIViewController) {
    if let scene = UIApplication.shared.connectedScenes.first as? UIWindowScene,
       let windowScene = scene.delegate as? UIWindowSceneDelegate,
       let window = windowScene.window
    {
        guard let window = window else { return }
        UIView.transition(with: window, duration: 0.5, 
                          options: .transitionCrossDissolve, animations: {
            window.rootViewController = UINavigationController(rootViewController: viewController)
        }, completion: nil)
    }
}