import { NativeModules, NativeEventEmitter, Platform } from 'react-native'

interface XuqmPushModuleInterface {
  detectVendor: () => Promise<string>
  registerPush: () => Promise<boolean>
}

const _native = NativeModules.XuqmPushModule as XuqmPushModuleInterface | undefined
const _eventEmitter = _native ? new NativeEventEmitter(_native as any) : null

export function isNativePushAvailable(): boolean {
  return !!_native
}

export async function detectVendorNative(): Promise<string> {
  if (!_native?.detectVendor) return Platform.OS === 'ios' ? 'APNS' : 'FCM'
  return _native.detectVendor()
}

export async function registerPushNative(): Promise<void> {
  if (!_native?.registerPush) return
  await _native.registerPush()
}

export function addPushTokenListener(
  callback: (event: { token: string; vendor: string }) => void,
): () => void {
  if (!_eventEmitter) {
    return () => {}
  }
  const subscription = _eventEmitter.addListener('XuqmPushToken', callback)
  return () => subscription.remove()
}