/* global PassField */

/* eslint-disable
    max-len
*/
import App from '../base'
import 'libs/passfield'
App.directive('complexPassword', () => ({
  require: ['^asyncForm', 'ngModel'],

  link(scope, element, attrs, ctrl) {
    PassField.Config.blackList = []
    const defaultPasswordOpts = {
      pattern: '',
      length: {
        min: 6,
        max: 72
      },
      allowEmpty: false,
      allowAnyChars: false,
      isMasked: true,
      showToggle: false,
      showGenerate: false,
      showTip: false,
      showWarn: false,
      checkMode: PassField.CheckModes.STRICT,
      chars: {
        digits: '1234567890',
        letters: 'abcdefghijklmnopqrstuvwxyz',
        letters_up: 'ABCDEFGHIJKLMNOPQRSTUVWXYZ',
        symbols: '@#$%^&*()-_=+[]{};:<>/?!£€.,'
      }
    }

    const opts = _.defaults(
      window.passwordStrengthOptions || {},
      defaultPasswordOpts
    )

    if (opts.length.min === 1) {
      // this allows basically anything to be a valid password
      opts.acceptRate = 0
    }

    if (opts.length.max > 72) {
      // there is a hard limit of 71 characters in the password at the backend
      opts.length.max = 72
    }

    if (opts.length.max > 0) {
      // PassField's notion of 'max' is non-inclusive
      opts.length.max += 1
    }

    const passField = new PassField.Field('passwordField', opts)
    const [asyncFormCtrl, ngModelCtrl] = Array.from(ctrl)

    ngModelCtrl.$parsers.unshift(function(modelValue) {
      let isValid = passField.validatePass()
      const email = asyncFormCtrl.getEmail() || window.usersEmail

      if (!isValid) {
        scope.complexPasswordErrorMessage = passField.getPassValidationMessage()
      } else if (typeof email === 'string' && email !== '') {
        const startOfEmail = email.split('@')[0]
        if (
          modelValue.indexOf(email) !== -1 ||
          modelValue.indexOf(startOfEmail) !== -1
        ) {
          isValid = false
          scope.complexPasswordErrorMessage =
            'Password can not contain email address'
        }
      }
      if (opts.length.max != null && modelValue.length >= opts.length.max) {
        isValid = false
        scope.complexPasswordErrorMessage = `Maximum password length ${opts
          .length.max - 1} exceeded`
      }
      if (opts.length.min != null && modelValue.length < opts.length.min) {
        isValid = false
        scope.complexPasswordErrorMessage = `Password too short, minimum ${
          opts.length.min
        }`
      }
      ngModelCtrl.$setValidity('complexPassword', isValid)
      return modelValue
    })
  }
}))