const messages = {
  default: 'Please fill in this field.',
  required: 'This field is required.',
  prepositions: {
    and: ' and ',
    or: ' or '
  },

  // Numbers, Sizes
  less: 'The value needs to be less than {val}.',
  less_equal: 'The value needs to be less than or equal to {val}.',
  bigger: 'The value needs to be bigger than {val}.',
  bigger_equal: 'The value needs to be less than or equal to {val}.',
  between: 'The value must be between {val}',
  number: 'Please enter a valid number.',


  // Strings
  exact: 'Must contain the following characters: {val}',
  extensions: 'Please upload a file with the following extensions: {val}.',
  contains: 'Must contain the following value: {val}.',
  minlength: 'Must be at least {val} characters long.',
  maxlength: 'Must be less than {val} characters long.',
  starts: 'This field should start with "{val}".',
  ends: 'This field should end with "{val}".',

  // Booleans
  boolean: 'This field needs to be "true" or "false".',

  // Regex
  email: 'Please provide a valid email address. (ex: user@gmail.com)',
  url: 'Please provide a valid URL address with http:// or https://',
  https: 'Your URL must start with https://',
  credit_card: 'Please enter a valid credit card number.',
  ip_v4: 'Please enter a valid IPV4 address. (ex: 172.16.254.1)',
  ip_v6: 'Please enter a valid IPV6 address. (ex: 3ffe:1900:4545:3:200:f8ff:fe21:67cf)',
  alpha: 'Only letters are allowed.',
  alpha_numeric: 'No special characters allowed, just numbers and letters.',
};

let transformedData = Boss.transform(yourData, {
  name: ['trim', 'uppercase'], // array of filters
  key: ['trim', 'base64_encode'],
  html: ['html_escape']
});

// or...

Boss.validate(yourData, rules, transforms)
  .then(data => {
    console.log(data.transformed); // Filtered data
    console.log(data.source); // Original data
  });

let fields = {
  ip: {
    value: '192.168.0.1'
  }
};
// or
let fields = {
  ip: '192.168.0.1'
};

let rules = {
  ip: {
    ip_v4: true
  }
};

Boss.validate(fields, rules);

let form = document.querySelector('#contact-form');

let rules = {
  email: {
    required: true,
    email: {
      value: true,
      message: 'Introduzca una dirección de correo electrónico válida.'
    }
  },
  cep: {
    required: {
      value: true,
      message: 'Por favor, este campo é obrigatório.'
    },
    regex: {
      value: /^\d{2}\.\d{3}-\d{3}$/,
      message: 'O CEP deve ser preenchido no seguinte formato: 00.000-00.'
    }
  }
};

Boss.validate(form, rules);

// Default values
Boss.configure({
  errorElement: 'label',
  apeendErrors: true // Append the error after the input
});

Boss.configureMessages({
  default: 'You shall not pass!',
  required: 'Dude, please!',
  my_custom_validator: 'Your name is not <strong>Gandalf</strong>.'
});

import { ja } from 'boss-validator/js/languages/all';

Boss.loadLanguage(ja);

// or

import { it } from 'boss-validator/js/languages/all';

Boss.loadLanguage(it);

Boss.addValidator({
  name: 'my_custom_validator',
  validator: function (el, value, rule) {
    return el.value === 'Gandalf';
  }
});

Boss.validate(form, {
  nickname: {
    my_custom_validator: true
  }
});

Boss.addValidator({
  name: 'long_name',
  validator: function (el) {
    return el.value.length >= 50;
  },
  message: 'Your name is not long!'
});

Boss.validate(form, {
  fullname: {
    validator: true
  }
});

Boss.setErrorClass('error__field');

router.get('/install', (req, res) => {
  res.render('admin/install');
});

router.post('/install', async (req, res) => {
  try {
    var data = await boss.validate(req.body, {
      database_name: { required: true, email: true },
      database_username: { required: true },
      database_password: { required: true },
      database_port: { required: true }
    });

    res.send(data);
  } catch (e) {
    res.send(e);
  }
});