/* eslint-disable consistent-return */
import { createReadStream } from 'fs'
import readline from 'readline'

import { AuthKeys } from '../../types'

export async function ServerUtils_GetAuthKeys(path: string): Promise<AuthKeys> {
  try {
    const fileStream = createReadStream(path)

    const rl = readline.createInterface({
      input: fileStream,
      crlfDelay: Infinity,
    })
    // Note: we use the crlfDelay option to recognize all instances of CR LF
    const keys: string[] = []
    // eslint-disable-next-line no-restricted-syntax
    for await (const line of rl) {
      keys.push(line)
    }

    return { current: keys[0], previous: keys[1] }
  } catch (err) {
    console.error(err)
    return {
      current: '',
      previous: '',
    }
  }
}