import $ from 'jquery';

//import 'bootstrap-select/dist/js/bootstrap-select';
//$.fn.selectpicker.Constructor.BootstrapVersion = '4';
import 'select2/dist/js/select2.js';

import select2 from 'jquery.inputmask/dist/jquery.inputmask.bundle';

import Events from "../_events";
import SpinnerUI from './_ui.spinner';
import FormFieldUI from './_ui.form.fields';

const FormBasics = (($) => {
  // Constants
  const NAME = 'jsFormBasics';
  const DATA_KEY = NAME;
  const $Html = $('html, body');
  const W = window;
  const D = document;

  class FormBasics {

    constructor(el) {
      const ui = this;
      const $el = $(el);

      ui._el = el;
      $el.data(DATA_KEY, this);

      $('[data-inputmask]').inputmask();

      const $fields = $el.find(Events.FORM_FIELDS);
      // init fields ui
      $fields.each((i, el) => {
        // skip some fields here
        new FormFieldUI(el);
      });

      const $selectFields = $el.find('select:not([readonly])');
      const $radioOptions = $el.find('input[type="radio"]');

      $selectFields.each((i, el) => {
        $(el).select2();
      });

      $fields.each((e, el) => {
        const $el = $(el);

        if ($el.hasClass('required') || $el.attr('aria-required')) {
          $el.closest('.field').addClass('required');
        }
      });

      $radioOptions.each((e, el) => {
        const $el = $(el);

        if ($el.is(':checked')) {
          $el.parents('.radio').addClass('checked');
        }
      });

      $radioOptions.on('change', (e) => {
        const $el = $(e.currentTarget);
        const $parent = $el.parents('.radio');

        $parent.siblings('.radio').each((i, el) => {
          const $el = $(el);

          if (!$el.find('input').is(':checked')) {
            $el.removeClass('checked');
          }
        });

        if ($el.is(':checked')) {
          $parent.addClass('checked');
        }
      });

      $el.on('submit', (e) => {
        SpinnerUI.show();
      });

      $el.addClass(`${NAME}-active`);
      $el.trigger(Events.FORM_INIT_BASICS);
    }

    // Public methods
    dispose() {
      const $el = $(this._el);

      const $selectFields = $el.find('select:not([readonly])');
      $selectFields.each((i, el) => {
        $(el).select2('destroy');
      });

      $el.removeClass(`${NAME}-active`);
      $.removeData(this._el, DATA_KEY);
      this._el = null;
    }

    static _jQueryInterface() {
      return this.each(() => {
        // attach functionality to el
        const $el = $(this);
        let data = $el.data(DATA_KEY);

        if (!data) {
          data = new FormBasics(this);
          $el.data(DATA_KEY, data);
        }
      });
    }
  }

  // jQuery interface
  $.fn[NAME] = FormBasics._jQueryInterface;
  $.fn[NAME].Constructor = FormBasics;
  $.fn[NAME].noConflict = function() {
    $.fn[NAME] = JQUERY_NO_CONFLICT;
    return FormBasics._jQueryInterface;
  };

  const init = () => {
    $('form').jsFormBasics();
  };

  // auto-apply
  $(W).on(`${Events.AJAX} ${Events.LOADED}`, () => {
    init();
  });

  return FormBasics;
})($);

export default FormBasics;