import { unregisterCurrentDevice } from '../features/devices/device-service'
import { detachPushRegistrationForLogout } from '../features/notifications/notification-service'
import { getMobileRuntimeConfig } from './native-config'
import { signOutWithLocalFallback, type LocalLogoutResult } from './logout'

export interface AccountLogoutInput {
  userId: string | null
  deviceId: string | null
  purgeLocalSession: () => Promise<void>
}

export interface AccountLogoutOperations {
  detachPush: (userId: string, deviceId: string | null) => Promise<void>
  unregisterDevice: (userId: string, installationId: string) => Promise<unknown>
  installationId: () => string
  signOut: (purgeLocalSession: () => Promise<void>) => Promise<LocalLogoutResult>
}

const accountLogoutOperations: AccountLogoutOperations = {
  detachPush: detachPushRegistrationForLogout,
  unregisterDevice: unregisterCurrentDevice,
  installationId: () => getMobileRuntimeConfig().installationId,
  signOut: signOutWithLocalFallback,
}

/** Keeps authenticated server detach operations ahead of local session loss. */
export async function performAccountLogout(
  input: AccountLogoutInput,
  operations: AccountLogoutOperations = accountLogoutOperations,
): Promise<LocalLogoutResult> {
  if (input.userId !== null) {
    await operations.detachPush(input.userId, input.deviceId)
    try {
      await operations.unregisterDevice(input.userId, operations.installationId())
    } catch {
      // Device unregister is best effort after push detach; local privacy and
      // refresh-token deletion must still proceed while offline.
    }
  }
  return operations.signOut(input.purgeLocalSession)
}