import AVFAudio
import CallKit
import Flutter
import PushKit
import UIKit
import UserNotifications
import YandexLoginSDK
import flutter_callkit_incoming
import flutter_foreground_task

@main
@objc class AppDelegate: FlutterAppDelegate, PKPushRegistryDelegate, CallkitIncomingAppDelegate {
  private var voipRegistry: PKPushRegistry?

  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    GeneratedPluginRegistrant.register(with: self)
    SwiftFlutterForegroundTaskPlugin.setPluginRegistrantCallback { registry in
      GeneratedPluginRegistrant.register(with: registry)
    }

    let mainQueue = DispatchQueue.main
    voipRegistry = PKPushRegistry(queue: mainQueue)
    voipRegistry?.delegate = self
    voipRegistry?.desiredPushTypes = [PKPushType.voIP]

    if #available(iOS 10.0, *) {
      UNUserNotificationCenter.current().delegate = self
    }

    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }

  @available(iOS 8.0, *)
  override func application(
    _ application: UIApplication,
    continue userActivity: NSUserActivity,
    restorationHandler: @escaping ([UIUserActivityRestoring]?) -> Void
  ) -> Bool {
    if YXLSdk.shared.processUserActivity(userActivity) {
      return true
    }
    return super.application(
      application,
      continue: userActivity,
      restorationHandler: restorationHandler
    )
  }

  override public func application(
    _ app: UIApplication,
    open url: URL,
    options: [UIApplication.OpenURLOptionsKey: Any] = [:]
  ) -> Bool {
    return YXLSdk.shared.handleOpen(
      url,
      sourceApplication: options[UIApplication.OpenURLOptionsKey.sourceApplication] as? String
    )
  }

  private func conversationUuid(fromActionUrl actionUrl: String?) -> String? {
    guard
      let actionUrl = actionUrl,
      let components = URLComponents(string: actionUrl)
    else {
      return nil
    }

    let queryItems = components.queryItems ?? []
    for key in ["uuid", "conversationUuid", "conversation_uuid"] {
      if let value = queryItems.first(where: { $0.name == key })?.value,
        !value.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty
      {
        return value.trimmingCharacters(in: .whitespacesAndNewlines)
      }
    }

    let segments = components.path.split(separator: "/").map(String.init)
    for index in segments.indices where segments[index] == "video-call" {
      let nextIndex = segments.index(after: index)
      if segments.indices.contains(nextIndex), !segments[nextIndex].isEmpty {
        return segments[nextIndex]
      }
    }

    return nil
  }


  func pushRegistry(
    _ registry: PKPushRegistry,
    didUpdate credentials: PKPushCredentials,
    for type: PKPushType
  ) {
    let deviceToken = credentials.token.map { String(format: "%02x", $0) }.joined()
    SwiftFlutterCallkitIncomingPlugin.sharedInstance?.setDevicePushTokenVoIP(deviceToken)
  }

  func pushRegistry(_ registry: PKPushRegistry, didInvalidatePushTokenFor type: PKPushType) {
    SwiftFlutterCallkitIncomingPlugin.sharedInstance?.setDevicePushTokenVoIP("")
  }

  func pushRegistry(
    _ registry: PKPushRegistry,
    didReceiveIncomingPushWith payload: PKPushPayload,
    for type: PKPushType,
    completion: @escaping () -> Void
  ) {
    guard type == .voIP else {
      completion()
      return
    }

    let dict = payload.dictionaryPayload
    let pushMarkers = [
      dict["type"] as? String,
      dict["notification_type"] as? String,
      dict["event"] as? String,
      dict["action"] as? String,
      dict["push_type"] as? String,
      dict["call_type"] as? String,
    ]
      .compactMap { $0?.lowercased().replacingOccurrences(of: "-", with: "_") }

    if pushMarkers.contains(where: { $0.contains("video_call") })
      && pushMarkers.contains(where: { $0.contains("end") || $0.contains("cancel") }) {
      SwiftFlutterCallkitIncomingPlugin.sharedInstance?.endAllCalls()
      completion()
      return
    }

    let nameCaller = (dict["nameCaller"] as? String)
      ?? (dict["counterpartName"] as? String)
      ?? (dict["counterpart_name"] as? String)
      ?? (dict["caller_name"] as? String)
      ?? (dict["callerName"] as? String)
      ?? (dict["caller"] as? String)
      ?? ""
    let conversationUuid = (dict["conversation_uuid"] as? String)
      ?? (dict["conversationUuid"] as? String)
      ?? (dict["conversation_id"] as? String)
      ?? (dict["chat_uuid"] as? String)
      ?? (dict["uuid"] as? String)
      ?? conversationUuid(fromActionUrl: dict["action_url"] as? String)
      ?? (dict["handle"] as? String)
      ?? ""
    let id = [
      conversationUuid,
      dict["call_id"] as? String,
      dict["id"] as? String,
      dict["message_id"] as? String,
    ]
      .compactMap { $0?.trimmingCharacters(in: .whitespacesAndNewlines) }
      .first { !$0.isEmpty && UUID(uuidString: $0) != nil }
      ?? UUID().uuidString
    let isVideo = (dict["isVideo"] as? Bool)
      ?? (dict["is_video"] as? Bool)
      ?? true

    var extra: [String: Any] = [:]
    if !conversationUuid.isEmpty {
      extra["conversationUuid"] = conversationUuid
    }
    if let avatar = dict["caller_avatar"] as? String ?? dict["avatar"] as? String
      ?? dict["avatarUrl"] as? String
      ?? dict["avatar_url"] as? String
      ?? dict["counterpartAvatarUrl"] as? String
      ?? dict["counterpart_avatar_url"] as? String
    {
      extra["counterpartAvatarUrl"] = avatar
    }
    if let messageId = dict["message_id"] as? String {
      extra["messageId"] = messageId
    }
    if let roomName = dict["room_name"] as? String {
      extra["roomName"] = roomName
    }
    if let localName = dict["localParticipantName"] as? String
      ?? dict["local_participant_name"] as? String
    {
      extra["localParticipantName"] = localName
    }
    if let counterpartName = dict["counterpartName"] as? String {
      extra["counterpartName"] = counterpartName
    } else if let counterpartName = dict["counterpart_name"] as? String {
      extra["counterpartName"] = counterpartName
    } else if !nameCaller.isEmpty {
      extra["counterpartName"] = nameCaller
    }

    let data = flutter_callkit_incoming.Data(
      id: id,
      nameCaller: nameCaller,
      handle: conversationUuid.isEmpty ? nameCaller : conversationUuid,
      type: 0
    )
    data.appName = "Итвио"
    data.duration = 45000
    data.handleType = "generic"
    data.supportsVideo = isVideo
    data.ringtonePath = "system_ringtone_default"
    data.configureAudioSession = false
    data.includesCallsInRecents = false
    data.extra = extra as NSDictionary

    SwiftFlutterCallkitIncomingPlugin.sharedInstance?.showCallkitIncoming(
      data,
      fromPushKit: true
    ) {
      completion()
    }
  }


  func onAccept(_ call: Call, _ action: CXAnswerCallAction) {
    action.fulfill()
  }

  func onDecline(_ call: Call, _ action: CXEndCallAction) {
    action.fulfill()
  }

  func onEnd(_ call: Call, _ action: CXEndCallAction) {
    action.fulfill()
  }

  func onTimeOut(_ call: Call) {}

  func didActivateAudioSession(_ audioSession: AVAudioSession) {}

  func didDeactivateAudioSession(_ audioSession: AVAudioSession) {}

  func providerDidReset() {}
}