const PasswordStrength = Object.freeze({
  WEAK: '弱',
  MEDIUM: '中',
  STRONG: '强'
})

function trimSpaces(value) {
  if (typeof value !== 'string') {
    return ''
  }
  return value.trim()
}
function validatePhone(value) {
  if (!value || typeof value !== 'string') {
    return false
  }
  const phoneRegex = /^1[3-9]\d{9}$/
  return phoneRegex.test(value.trim())
}
function validateTelPhone(value) {
  if (!value || typeof value !== 'string') {
    return false
  }
  const telRegex = /^0\d{2,3}-?\d{7,8}$/
  return telRegex.test(value.trim().replace(/\s+/g, ''))
}
function validateAccount(value) {
  if (!value || typeof value !== 'string') {
    return false
  }
  const accountRegex = /^[a-zA-Z][a-zA-Z0-9_]{4,19}$/
  return accountRegex.test(value.trim())
}
function validatePassword(value) {
  if (!value || typeof value !== 'string') {
    return false
  }
  const trimmedValue = value.trim()
  if (trimmedValue.length < 6 || trimmedValue.length > 20) {
    return false
  }
  const hasLetter = /[a-zA-Z]/.test(trimmedValue)
  const hasNumber = /\d/.test(trimmedValue)
  return hasLetter && hasNumber
}
function validateStrongPassword(value) {
  if (!value || typeof value !== 'string') {
    return false
  }
  const trimmedValue = value.trim()
  if (trimmedValue.length < 8 || trimmedValue.length > 20) {
    return false
  }
  const hasUpperCase = /[A-Z]/.test(trimmedValue)
  const hasLowerCase = /[a-z]/.test(trimmedValue)
  const hasNumber = /\d/.test(trimmedValue)
  const hasSpecialChar = /[!@#$%^&*()_+\-=[\]{};':"\\|,.<>/?]/.test(trimmedValue)
  return hasUpperCase && hasLowerCase && hasNumber && hasSpecialChar
}
function getPasswordStrength(value) {
  if (!value || typeof value !== 'string') {
    return '弱'
  }
  const trimmedValue = value.trim()
  if (trimmedValue.length < 6) {
    return '弱'
  }
  const hasUpperCase = /[A-Z]/.test(trimmedValue)
  const hasLowerCase = /[a-z]/.test(trimmedValue)
  const hasNumber = /\d/.test(trimmedValue)
  const hasSpecialChar = /[!@#$%^&*()_+\-=[\]{};':"\\|,.<>/?]/.test(trimmedValue)
  const typeCount = [hasUpperCase, hasLowerCase, hasNumber, hasSpecialChar].filter(Boolean).length
  if (typeCount >= 3) {
    return '强'
  } else if (typeCount >= 2) {
    return '中'
  } else {
    return '弱'
  }
}
function validateIPv4Address(value) {
  if (!value || typeof value !== 'string') {
    return false
  }
  const trimmedValue = value.trim()
  const ipRegex = /^((25[0-5]|2[0-4]\d|[01]?\d{1,2})\.){3}(25[0-5]|2[0-4]\d|[01]?\d{1,2})$/
  if (!ipRegex.test(trimmedValue)) {
    return false
  }
  const segments = trimmedValue.split('.')
  return segments.every((segment) => {
    const num = parseInt(segment, 10)
    return num >= 0 && num <= 255
  })
}
function validateEmail(value) {
  if (!value || typeof value !== 'string') {
    return false
  }
  const trimmedValue = value.trim()
  const emailRegex =
    /^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/
  return emailRegex.test(trimmedValue) && trimmedValue.length <= 254
}
function validateURL(value) {
  if (!value || typeof value !== 'string') {
    return false
  }
  try {
    new URL(value.trim())
    return true
  } catch {
    return false
  }
}
function validateChineseIDCard(value) {
  if (!value || typeof value !== 'string') {
    return false
  }
  const trimmedValue = value.trim()
  const idCardRegex =
    /^[1-9]\d{5}(18|19|20)\d{2}((0[1-9])|(1[0-2]))(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$/
  if (!idCardRegex.test(trimmedValue)) {
    return false
  }
  const weights = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2]
  const checkCodes = ['1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2']
  let sum = 0
  for (let i = 0; i < 17; i++) {
    sum += parseInt(trimmedValue[i]) * weights[i]
  }
  const checkCode = checkCodes[sum % 11]
  return trimmedValue[17].toUpperCase() === checkCode
}
function validateBankCard(value) {
  if (!value || typeof value !== 'string') {
    return false
  }
  const trimmedValue = value.trim().replace(/\s+/g, '')
  if (!/^\d{13,19}$/.test(trimmedValue)) {
    return false
  }
  let sum = 0
  let shouldDouble = false
  for (let i = trimmedValue.length - 1; i >= 0; i--) {
    let digit = parseInt(trimmedValue[i])
    if (shouldDouble) {
      digit *= 2
      if (digit > 9) {
        digit = (digit % 10) + 1
      }
    }
    sum += digit
    shouldDouble = !shouldDouble
  }
  return sum % 10 === 0
}
export {
  PasswordStrength,
  getPasswordStrength,
  trimSpaces,
  validateAccount,
  validateBankCard,
  validateChineseIDCard,
  validateEmail,
  validateIPv4Address,
  validatePassword,
  validatePhone,
  validateStrongPassword,
  validateTelPhone,
  validateURL
}