//  Copyright © 2024 650 Industries. All rights reserved.

import ExpoModulesCore
import UIKit
import MachO

let onDevicePushTokenEventName = "onDevicePushToken"

public class PushTokenModule: Module, NotificationDelegate {
  var promiseNotYetResolved: Promise?

  public func definition() -> ModuleDefinition {
    Name("ExpoPushTokenManager")

    Events([onDevicePushTokenEventName])

    OnCreate {
      NotificationCenterManager.shared.addDelegate(self)
    }

    OnDestroy {
      NotificationCenterManager.shared.removeDelegate(self)
    }

    AsyncFunction("getDevicePushTokenAsync") { (promise: Promise) in
      if let existingPromise = promiseNotYetResolved {
        let message = """
A newer async call to getDevicePushTokenAsync() was started.
To obtain the push token, await the result of the newer call.
"""
        existingPromise.reject("E_PROMISE_REPLACED", message)
      }

      #if targetEnvironment(simulator)
      // Log warning only for iOS 26.0 simulator due to known issue
      let os = ProcessInfo.processInfo.operatingSystemVersion
      if os.majorVersion == 26 && os.minorVersion == 0 {
        if let appContext = appContext {
          appContext.jsLogger.warn("expo-notifications: obtaining a push token may not reliably work on the iOS 26.0 simulator due to an iOS issue. To obtain a push token, use a real device. Read more: https://developer.apple.com/forums/thread/795433")
        }
      }
      #endif
      promiseNotYetResolved = promise
      UIApplication.shared.registerForRemoteNotifications()
    }
    .runOnQueue(.main)

    AsyncFunction("unregisterForNotificationsAsync") { () in
      UIApplication.shared.unregisterForRemoteNotifications()
    }
    .runOnQueue(.main)
  }

  public func didRegister(_ deviceToken: String) {
    promiseNotYetResolved?.resolve(deviceToken)
    promiseNotYetResolved = nil
    self.sendEvent(onDevicePushTokenEventName, ["devicePushToken": deviceToken])
  }

  public func didFailRegistration(_ error: any Error) {
    promiseNotYetResolved?.reject(error)
    promiseNotYetResolved = nil
  }
}