import { isString } from 'exotic'
import isValidLength from './isValidLength'

const matchPhone = /^(?=.*?[1-9])[0-9 ()-.+]+$/
const matchAlphabets = /^[a-zA-Z]*$/
// {9,9}
const matchPhoneLoose = /^[1-9][0-9-().\s]$/
const matchSpaceDashSpace = /[\(\)\-\.\+\s]+/gm
const matchPhoneLoosest = /^(?:(?:\+?1\s*(?:[.-]\s*)?)?(?:\(\s*([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9])\s*\)|([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))\s*(?:[.-]\s*)?)?([2-9]1[02-9]|[2-9][02-9]1|[2-9][02-9]{2})\s*(?:[.-]\s*)?([0-9]{4})(?:\s*(?:#|x\.?|ext\.?|extension)\s*(\d+))?$/

// eppPhone match extensible provisioning protocol format
// const eppPhone = /^\+[0-9]{1,3}\.[0-9]{4,14}(?:x.+)?$/
// nanpPhone match north american number plan format
// const nanpPhone = /^\(?([0-9]{3})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})$/

function sanitizeTelephone(value: string): string {
  return isString(value) ? value.replace(matchSpaceDashSpace, '') : value
}

/**
 * @see https://en.wikipedia.org/wiki/Telephone_numbers_in_the_Solomon_Islands
 * @see https://stackoverflow.com/questions/14894899/what-is-the-minimum-length-of-a-valid-international-phone-number
 * @see https://en.wikipedia.org/wiki/Telephone_numbering_plan
 *
 * 5-15 digits
 *
 * @see isValidLength
 * @param {Number | String} value
 * @return {Boolean}
 */
function isTelephone(value: string): boolean {
  if (isString(value)) {
    const strippedValue = sanitizeTelephone(value)

    // 5-15
    if (isValidLength(strippedValue, 4, 16)) {
      return (
        matchPhone.test(strippedValue) || matchPhoneLoose.test(strippedValue)
      )
    } else {
      return false
    }
  } else {
    return false
  }
}

export { sanitizeTelephone }
export { isTelephone as isValidTelephone }
export { isTelephone }
export default isTelephone