const PERSIAN_DIGITS = '۰۱۲۳۴۵۶۷۸۹'
const ARABIC_DIGITS = '٠١٢٣٤٥٦٧٨٩'

export const MOBILE_CHANGE_FINAL_CONFIRMATION = 'تغییر شماره'

const toEnglishDigits = (value: string) =>
  value.replace(/[۰-۹٠-٩]/g, (digit) => {
    const persianIndex = PERSIAN_DIGITS.indexOf(digit)

    return String(persianIndex >= 0 ? persianIndex : ARABIC_DIGITS.indexOf(digit))
  })

export const normalizeAdminMobile = (raw: string): string | null => {
  let value = toEnglishDigits(raw).trim().replace(/[\s-]/g, '')

  if (value.startsWith('+')) value = value.slice(1)
  else if (value.startsWith('00')) value = value.slice(2)

  if (value.startsWith('0') && value.length === 11) value = `98${value.slice(1)}`
  else if (value.startsWith('9') && value.length === 10) value = `98${value}`

  return /^989\d{9}$/.test(value) ? value : null
}

export const confirmsCurrentMobile = (confirmation: string, currentMobile: string) => normalizeAdminMobile(confirmation) === currentMobile

export const confirmsFinalMobileChange = (confirmation: string) => confirmation.trim() === MOBILE_CHANGE_FINAL_CONFIRMATION