import { MAX_VAR_KEY_LENGHT, VAR_ITEM_TEMPLATE, getMaxVarNameLength } from '@/config'
const otherAllowedRegex = /^[a-zA-Z0-9_]+$/

export const getNewVar = (key: string) => {
  return {
    ...VAR_ITEM_TEMPLATE,
    key,
    name: key.slice(0, getMaxVarNameLength(key)),
  }
}

const checkKey = (key: string, canBeEmpty?: boolean) => {
  if (key.length === 0 && !canBeEmpty)
    return 'canNoBeEmpty'

  if (canBeEmpty && key === '')
    return true

  if (key.length > MAX_VAR_KEY_LENGHT)
    return 'tooLong'

  if (otherAllowedRegex.test(key)) {
    if (/[0-9]/.test(key[0]))
      return 'notStartWithNumber'

    return true
  }
  return 'notValid'
}

export const checkKeys = (keys: string[], canBeEmpty?: boolean) => {
  let isValid = true
  let errorKey = ''
  let errorMessageKey = ''
  keys.forEach((key) => {
    if (!isValid)
      return

    const res = checkKey(key, canBeEmpty)
    if (res !== true) {
      isValid = false
      errorKey = key
      errorMessageKey = res
    }
  })
  return { isValid, errorKey, errorMessageKey }
}