/* --------------------------------------------------------------
 specials_date.js 2018-12-05
 Gambio GmbH
 http://www.gambio.de
 Copyright (c) 2015 Gambio GmbH
 Released under the GNU General Public License (Version 2)
 [http://www.gnu.org/licenses/gpl-2.0.html]
 --------------------------------------------------------------
 */

/**
 * ## specials_date
 *
 * Updates hidden date input fields if the user changes the date via the datepicker
 *
 * @module Compatibility/specials_date
 */
gx.compatibility.module(
    'specials_date',

    [],

    /**  @lends module:Compatibility/specials_date */

    function (data) {

        'use strict';

        // ------------------------------------------------------------------------
        // VARIABLES DEFINITION
        // ------------------------------------------------------------------------

        var
            /**
             * Module Selector
             *
             * @var {jQuery}
             */
            $this = $(this),

            /**
             * Input Selector
             *
             * @var {jQuery}
             */
            $input = $this.find('#special-date'),

            /**
             * Input Selector
             *
             * @var {jQuery}
             */
            $input_begins = $this.find('#special-begins-date'),

            /**
             * Default Options
             *
             * @type {object}
             */
            defaults = {},

            /**
             * Final Options
             *
             * @var {object}
             */
            options = $.extend(true, {}, defaults, data),

            /**
             * Module Object
             *
             * @type {object}
             */
            module = {};

        // ------------------------------------------------------------------------
        // EVENT HANDLERS
        // ------------------------------------------------------------------------

        /**
         * @description Retrieves the value from input field returns a formated
         * object with splitted date values.
         * @param {string} separator = '.' value date separator.
         * @param {string[]} format value date parts format array in order.
         * @returns {object}
         */
        var _getFormattedValue = function (separator, format) {
            var date, date_begins, result;

            // Separator
            separator = separator || '.';

            // Format
            format = format || ['dd', 'mm', 'yyyy'];

            // Input value
            date = $input.val().split(separator);
            date_begins = $input_begins.val().split(separator);

            // Result
            result = {
                day: '',
                month: '',
                year: '',
                day_begins: '',
                month_begins: '',
                year_begins: ''
            };

            // Fill result object
            for (var i = 0; i < format.length; i++) {
                if (format[i] === 'dd') {
                    result.day = date[i];
                    result.day_begins = date_begins[i];
                } else if (format[i] === 'mm') {
                    result.month = date[i];
                    result.month_begins = date_begins[i];
                } else if (format[i] === 'yyyy') {
                    result.year = date[i];
                    result.year_begins = date_begins[i];
                }
            }

            // Returns filled result object
            return result;
        };

        /**
         * @description Updates the hidden fields.
         * @param {object} date contains date part values.
         * @param {string} date.day Day value.
         * @param {string} date.month Month value.
         * @param {string} date.year Year value.
         */
        var _updateDateFields = function (date) {
            date = $.extend({
                day: '',
                month: '',
                year: '',
                day_begins: '',
                month_begins: '',
                year_begins: ''
            }, date);

            $('input[name="day"]').val(date.day);
            $('input[name="month"]').val(date.month);
            $('input[name="year"]').val(date.year);
            $('input[name="begins_day"]').val(date.day_begins);
            $('input[name="begins_month"]').val(date.month_begins);
            $('input[name="begins_year"]').val(date.year_begins);
        };

        // ------------------------------------------------------------------------
        // INITIALIZATION
        // ------------------------------------------------------------------------

        module.init = function (done) {
            $('form[name="new_special"]').on('submit', function () {
                _updateDateFields(_getFormattedValue());
            });

            done();
        };

        return module;
    });