Migration of Advanced Parameters -> Import (Step 2)

admin-dev/themes/new-theme/js/pages/import-data/EntityFieldsValidator.js

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+/**
+ * 2007-2018 PrestaShop.
+ *
+ * NOTICE OF LICENSE
+ *
+ * This source file is subject to the Open Software License (OSL 3.0)
+ * that is bundled with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * https://opensource.org/licenses/OSL-3.0
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@prestashop.com so we can send you a copy immediately.
+ *
+ * DISCLAIMER
+ *
+ * Do not edit or add to this file if you wish to upgrade PrestaShop to newer
+ * versions in the future. If you wish to customize PrestaShop for your
+ * needs please refer to http://www.prestashop.com for more information.
+ *
+ * @author    PrestaShop SA <contact@prestashop.com>
+ * @copyright 2007-2018 PrestaShop SA
+ * @license   https://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
+ * International Registered Trademark & Property of PrestaShop SA
+ */
+
+const $ = window.$;
+
+export default class EntityFieldsValidator {
+  /**
+   * Validates entity fields
+   *
+   * @returns {boolean}
+   */
+  static validate() {
+    $('.js-validation-error').addClass('d-none');
+
+    return this._checkDuplicateSelectedValues() && this._checkRequiredFields();
+  }
+
+  /**
+   * Checks if there are no duplicate selected values.
+   *
+   * @returns {boolean}
+   * @private
+   */
+  static _checkDuplicateSelectedValues() {
+    const uniqueFields = [];
+    let valid = true;
+
+    $('.js-entity-field select').each(function () {
+      let value = $(this).val();
+
+      if (value === 'no') {
+        return;
+      }
+
+      if ($.inArray(value, uniqueFields) !== -1) {
+        valid = false;
+        $('.js-duplicate-columns-warning').removeClass('d-none');
+        return;
+      }
+
+      uniqueFields.push(value);
+    });
+
+    return valid;
+  }
+
+  /**
+   * Checks if all required fields are selected.
+   *
+   * @returns {boolean}
+   * @private
+   */
+  static _checkRequiredFields() {
+    let requiredImportFields = $('.js-import-data-table').data('required-fields');
+
+    for (let key in requiredImportFields) {
+      if (0 === $(`option[value="${requiredImportFields[key]}"]:selected`).length) {
+        $('.js-missing-column-warning').removeClass('d-none');
+        $('.js-missing-column').text($(`option[value="${requiredImportFields[key]}"]:first`).text());
+
+        return false;
+      }
+    }
+    return true;
+  }
+}