/*
 * #%L
 * synat-portal-webapp Maven Webapp
 * %%
 * Copyright (C) 2010 - 2013 ICM, Warsaw University
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */

function initializeDateInput(dateInput, buttonImage, parentInputRangeClass) {
    dateInput.each(function () {
        if ($(this).hasClass('with-datepicker')) {
            if ($(this).hasClass('from')) {
                $(this).datepicker({
                    showOn: "button",
                    buttonImage: buttonImage,
                    buttonImageOnly: true,
                    dateFormat: "yy-mm-dd",
                    onClose: function(selectedDate) {
                        $(this).closest('.' + parentInputRangeClass).find('.with-datepicker.to').datepicker('option', 'minDate', selectedDate );
                    }
                });
                $(this).inputmask("yyyy-mm-dd", {
                    "showMaskOnHover": false, 
                    "onincomplete": function(){
                        function getLastDayOfMonth(year, month) {
                            if (month == 2) {
                                return ((year%4 == 0 && year%100 != 0) || year%400 == 0) ? '29' : '28';
                            } else if (month <= 7) {
                                return (month%2 == 0) ? '30' : '31'; 
                            } else {
                                return (month%2 == 0) ? '31' : '30';
                            }
                        }
            
                        incompleteVal = $(this).val();
                        inputYear = incompleteVal.substr(0,4);
                        if (inputYear.indexOf('_') == -1) { // complete year
                            inputMonth = incompleteVal.substr(5,2);
                            inputDay = incompleteVal.substr(8.2);
                            isMonthComplete = inputMonth.indexOf('_') == -1;
                            isDayComplete = inputDay.indexOf('_') == -1;
                            if (!isMonthComplete && !isDayComplete) {
                                $(this).val(inputYear + '-01-01');
                            } else if (isMonthComplete && !isDayComplete) {
                                $(this).val(inputYear + '-' + inputMonth + '-01');
                            } else {
                                $(this).val('');
                            }
                        } else {
                            $(this).val('');
                        }
                    }
                });
            } else if ($(this).hasClass('to')) {
                $(this).datepicker({
                    showOn: "button",
                    buttonImage: buttonImage,
                    buttonImageOnly: true,
                    dateFormat: "yy-mm-dd",
                    onClose: function(selectedDate) {
                        $(this).closest('.' + parentInputRangeClass).find('.with-datepicker.from').datepicker('option', 'maxDate', selectedDate );
                    }
                });
                $(this).inputmask("yyyy-mm-dd", {
                    "showMaskOnHover": false, 
                    "onincomplete": function(){
                        function getLastDayOfMonth(year, month) {
                            if (month == 2) {
                                return ((year%4 == 0 && year%100 != 0) || year%400 == 0) ? '29' : '28';
                            } else if (month <= 7) {
                                return (month%2 == 0) ? '30' : '31'; 
                            } else {
                                return (month%2 == 0) ? '31' : '30';
                            }
                        }
            
                        incompleteVal = $(this).val();
                        inputYear = incompleteVal.substr(0,4);
                        if (inputYear.indexOf('_') == -1) { // complete year
                            inputMonth = incompleteVal.substr(5,2);
                            inputDay = incompleteVal.substr(8.2);
                            isMonthComplete = inputMonth.indexOf('_') == -1;
                            isDayComplete = inputDay.indexOf('_') == -1;
                            if (!isMonthComplete && !isDayComplete) {
                                $(this).val(inputYear + '-12-31');
                            } else if (isMonthComplete && !isDayComplete) {
                                $(this).val(inputYear + '-' + inputMonth + '-' + getLastDayOfMonth(parseInt(inputYear), parseInt(inputMonth)));
                            } else {
                                $(this).val('');
                            }
                        } else {
                            $(this).val('');
                        }
                    }
                });
            }
        }
    });
    
}