import type { UserModule } from '~/types'
import { App } from '@capacitor/app'
import { Capacitor } from '@capacitor/core'
import { isSpoofed, useConsole } from '~/services/console'

export const install: UserModule = () => {
  if (!Capacitor.isNativePlatform())
    return
  // The notifications plugin is native-only; keep it out of the web entry chunk.
  const notifications = import('~/services/nativeNotifications')
  notifications
    .then(({ setupNativeNotifications }) => setupNativeNotifications())
    .catch(error => console.error('Cannot set up native notifications', error))

  let userId: string | null = null
  const registerWhenActive = async () => {
    // A silent push can launch the app in the background; wait for the user to
    // open it so the permission prompt is never requested off-screen.
    if (!userId || !(await App.getState().catch(() => ({ isActive: false }))).isActive)
      return
    try {
      const { registerNativeNotifications } = await notifications
      await registerNativeNotifications(userId)
    }
    catch (error) {
      console.error('Cannot register native notifications', error)
    }
  }

  void App.addListener('appStateChange', ({ isActive }) => {
    if (isActive)
      void registerWhenActive()
  })

  useConsole().auth.onAuthStateChange((event, session) => {
    // Never bind an admin's device to the customer they are logged in as.
    // Defer: calling the auth client from inside its own callback must not re-enter it,
    // and the spoof marker is written only after setSession resolves.
    setTimeout(() => {
      const previousUserId = userId
      userId = session?.user?.id && !isSpoofed() ? session.user.id : null
      if (event === 'SIGNED_OUT' || (previousUserId && previousUserId !== userId)) {
        notifications
          .then(({ unregisterNativeNotifications }) => unregisterNativeNotifications(event === 'SIGNED_OUT'))
          .then(() => registerWhenActive())
          .catch(error => console.error('Cannot refresh native notification registration', error))
      }
      else {
        void registerWhenActive()
      }
    }, 0)
  })
}