function selectSupportConcept(cb2ScOid) {
    showSpinner();
    $("#CostBearer2SupportConceptOid").val(cb2ScOid);
    $("#selectSupportConceptForm").submit();
}

function setSelectedEmployee() {
    var employeeOid = parseInt($("#employeesDropDown").find(":selected").val());

    if (isNaN(employeeOid)) {
        return;
    }

    $.get(getSetServiceRecordEmployeeUrl(), { employeeOid: employeeOid });
}

function loadServiceDescriptions() {
    var selectedCategoryOid = $("#category-select").find(":selected").val();

    if (selectedCategoryOid === null || selectedCategoryOid === undefined) {
        return;
    }

    $.get(getLoadServiceCategoriesUrl(), { pServiceCategoryOid: selectedCategoryOid })
        .done(function (data) {
            var serviceDescriptions = $.parseJSON(data);
            var serviceDescriptionsSelect = $("#leistung-select");

            serviceDescriptionsSelect.empty();
            serviceDescriptionsSelect.val("");

            $.each(serviceDescriptions, function (index, serviceDescription) {
                serviceDescriptionsSelect.append('<option value="' + serviceDescription.ServiceDescriptionOid + '">' + serviceDescription.Name + "</option>");
            });

            var serviceDescriptionToEdit = getServiceDescriptionToEdit();

            var selectedOid = 0;

            if (serviceDescriptionToEdit > 0) {
                $("#leistung-select > option").each(function() {
                    var val = $(this).val();

                    if (serviceDescriptionToEdit == val) {
                        serviceDescriptionsSelect.val(val);
                        selectedOid = val;
                    }
                });
            } else {
                if(serviceDescriptions[0] !== undefined) {
                    serviceDescriptionsSelect.val(serviceDescriptions[0].ServiceDescriptionOid);
                    selectedOid = serviceDescriptions[0].ServiceDescriptionOid;
                }
            }

            if (selectedOid > 0) {
                $.get(getSetServiceDescriptionUrl(), { pServiceDescriptionOid: selectedOid });
            }

            $.get(getLoadTextbausteineForServiceCategoryUrl(), { pServiceCategoryOid: selectedCategoryOid }).done(function(result) {
                if(result.length <= 2) {
                    $("#textmodule-container").hide();

                    return;
                }

                $("#textmodule-container").show();

                $("#tree").html(result);

                //$("#tree").treeview({
                //    data: result,
                //    onNodeSelected: function (event, data) {
                //        var tags = data.tags;

                //        if (tags === undefined || tags === null || tags.length === 0) {
                //            return;
                //        }

                //        var textbausteinOid = parseInt(tags[0], 10);
                //        var focusedDokuFeld;

                //        $.get(getLoadCompleteTextbausteinByOidUrl(), { pTextbausteinOid: textbausteinOid }).done(function (textModuleText) {
                //            if ($("#dokufeld").length > 0) {
                //                focusedDokuFeld = $("#dokufeld");
                //            } else {
                //                var numberOfDokutypes = getNumberOfDokutypes();

                //                for (var i = 0; i < numberOfDokutypes; i++) {
                //                    var currentElement = $("#doku_" + i);

                //                    if (currentElement.css("display") !== "none") {
                //                        focusedDokuFeld = $("#doku-textarea-" + i);
                //                        break;
                //                    }
                //                }
                //            }

                //            var cursorPosition = focusedDokuFeld.prop("selectionStart");
                //            var v = focusedDokuFeld.val();
                //            var textBefore = v.substring(0, cursorPosition);
                //            var textAfter = v.substring(cursorPosition, v.length);

                //            focusedDokuFeld.val(textBefore + textModuleText + textAfter);

                //            $("#textbausteine-popup").modal("hide");
                //        });
                //    }
                //});
            });
        });
}

function checkJson(str)
{
    try {
        JSON.parse(str);
    } catch (error) {
        return false;
    }

    return true;
}

function serviceDescriptionSelectOnReset() {
    setTimeout(function () {
        loadServiceDescriptions();
    }, 100);
}

function showAlertMessage(message) {
    $("#form-alert").html(message);
    $("#form-alert").show();
}

function calculateDuration(isInvocatedByHoursMinutesButton) {
    logInfo("calculateDuration");
    var startTime = $("#start-time").val();
    var endTime = $("#end-time").val();
    var duration = $("#duration").val();
    var hoursMinutesDropdownButton = $("#hours-minutes-dropdown-btn");

    logInfo(`startTime: ${startTime}; 
endTime: ${endTime}
duration: ${duration}
hoursMInutesDropdownButton: ${hoursMinutesDropdownButton}`);

    var startTimeCondition = startTime !== undefined && startTime !== null && startTime.length > 0;
    var endTimeCondition = endTime !== undefined && endTime !== null && endTime.length > 0;
    var durationNumber = hoursMinutesDropdownButton.length && hoursMinutesDropdownButton.text() === "Stunden" ? parseFloat(duration.replace(",", ".")) : parseInt(duration, 10);
    var durationCondition = !isNaN(durationNumber);
    var startDateString = $("#start-date-picker").datetimepicker("date");
    var endDate = moment(new Date());
    var startDate = moment(new Date());
    
    if(startDateString.length !== 0) {
        startDate = moment(startDateString);
        endDate = startDate.clone();
    }

    if ($("#end-date-picker").length !== 0) {
        var endDateString = $("#end-date-picker").datetimepicker("date");

        if (endDateString.length !== 0) {
            endDate = moment(endDateString);
        }
    }
    
    var newDurationValue = 0;

    if(startTimeCondition && endTimeCondition && isInvocatedByHoursMinutesButton === false) {
        var startHHmm = parseTimeInputToIntegerArray(startTime);
        var endHHmm = parseTimeInputToIntegerArray(endTime);
        
        startDate.hours(startHHmm[0]);
        startDate.minutes(startHHmm[1]);
        endDate.hours(endHHmm[0]);
        endDate.minutes(endHHmm[1]);

        var momentDuration = moment.duration(endDate.diff(startDate));

        if (hoursMinutesDropdownButton.length && hoursMinutesDropdownButton.text() === "Stunden") {
            newDurationValue = momentDuration.asHours();
        } else {
            newDurationValue = momentDuration.asMinutes();
        }

        $("#duration").val(newDurationValue);
    } else if(startTimeCondition && durationCondition) {
        if(hoursMinutesDropdownButton.length && hoursMinutesDropdownButton.text() === "Stunden") {
            durationNumber *= 60;
        }

        calculateTimeWithDuration(startTime, $("#end-time"), startDate, durationNumber);
    } else if(endTimeCondition && durationCondition) {
        if(hoursMinutesDropdownButton.length && hoursMinutesDropdownButton.text() === "Stunden") {
            durationNumber *= 60;
        }

        calculateTimeWithDuration(endTime, $("#start-time"), startDate, durationNumber * -1);
    }
}

function onDurationChange() {
    var startTime = $("#start-time").val();
    var endTime = $("#end-time").val();
    var duration = $("#duration").val();

    var hoursMinutesDropdownButton = $("#hours-minutes-dropdown-btn");
    var startTimeCondition = startTime !== undefined && startTime !== null && startTime.length > 0;
    var endTimeCondition = endTime !== undefined && endTime !== null && endTime.length > 0;
    var durationNumber = hoursMinutesDropdownButton.length && hoursMinutesDropdownButton.text() === "Stunden" ? parseFloat(duration.replace(",", ".")) : parseInt(duration, 10);
    var durationCondition = !isNaN(durationNumber);

    if((false === startTimeCondition && false === endTimeCondition) || durationCondition === false) {
        return;
    }

    var startDateString = $("#start-date-picker").datetimepicker("date");
    var endDate = moment(new Date());
    var startDate = moment(new Date());

    if (startDateString.length !== 0) {
        startDate = moment(startDateString);
        endDate = startDate.clone();
    }

    if ($("#end-date-picker").length !== 0) {
        var endDateString = $("#end-date-picker").datetimepicker("date");
        endDate = moment(endDateString);
    }

    var h2m = [0, 0];

    if(hoursMinutesDropdownButton.length && hoursMinutesDropdownButton.text() === "Stunden") {
        durationNumber *= 60;
    }

    if (startTimeCondition === true) {
        h2m = parseTimeInputToIntegerArray(startTime);

        startDate.hours(h2m[0]).minutes(h2m[1]).add(durationNumber, "m");
        $("#end-time").val(startDate.format("HH:mm"));
    } else {
        h2m = parseTimeInputToIntegerArray(endTime);

        endDate.hours(h2m[0]).minutes(h2m[1]).add(durationNumber * -1, "m");

        $("#start-time").val(endDate.format("HH:mm"));
    }
}

function calculateTimeWithDuration(timeInputValue, timeElement, startDate, duration) {
    var hoursToMinutes = parseTimeInputToIntegerArray(timeInputValue);
    var hours = parseInt(hoursToMinutes[0]);
    var minutes = parseInt(hoursToMinutes[1]);
    console.log("duration: " + duration);
    startDate.hours(hours);
    startDate.minutes(minutes);

    startDate.add(duration, "m");

    timeInputValue = startDate.format("HH:mm");

    timeElement.val(timeInputValue);
}

function resetCreateForm() {
    $("#serviceRecordCreationForm").trigger("reset");
}

function resetSingleBookingForm() {
    $("#singleBookingForm").trigger("reset");
}

function submitSingleBookingForm() {
    showSpinner();

    validateForm($("#singleBookingForm"));
}

function submitCreateForm() {
    showSpinner();

    validateForm($("#serviceRecordCreationForm"));
}

function submitEditForm() {
    showSpinner();

    validateForm($("#serviceRecordEditForm"));
}

function resetGroupBookingForm() {
    $("#groupBookingCreationForm").trigger("reset");
}

function submitGroupBookingForm() {
    showSpinner();

    validateForm($("#groupBookingCreationForm"));
}

function submitGroupBookingEditForm() {
    showSpinner();

    validateForm($("#groupBookingEditingForm"));
}

function deactivateGroupBookingForm() {
    $("#employees-button, #category-select, #leistung-select, #start-date, #end-date, #start-time, #end-time, #duration, #distance, textarea, #reset-button, #create-button, #textbausteine-button").prop("disabled", true);
}

function activateGroupBookingForm() {
    $("#employees-button, #category-select, #leistung-select, #start-date, #end-date, #start-time, #end-time, #duration, #distance, textarea, #reset-button, #create-button, #textbausteine-button").prop("disabled", false);
}

function deleteServiceRecord(serviceRecordOid) {

    showMessagePopupWithCallback("Eintrag löschen", "Sind Sie sicher, dass Sie den Eintrag löschen möchten?",
        function() {
            var url = getValidateServiceRecordDeletionUrl();

            $.get(url, { serviceRecordOidString: serviceRecordOid }).done(function(result) {
                if (result === "Error") {
                    showAlertMessageBox("Fehler", "Es ist ein Fehler aufgetreten", null, false);
                    return;
                }

                var form = $("#deletion-form");

                if(result.length === 0) {
                    if(form.length !== 0) {
                        logDebug("Sollte nicht mehr eintreffen; serviceRecordOid: " + serviceRecordOid);
                        $("#oidHolder").val(serviceRecordOid);

                        showSpinner();
                        form.submit();
                    }
                } else { // Meldungen
                    hideSpinner();
                    var validationResult = $.parseJSON(result);

                    if(validationResult.Message === null) {
                        logDebug("Is valid; serviceRecordOid: " + serviceRecordOid);
                        $("#oidHolder").val(serviceRecordOid);

                        showSpinner();
                        form.submit();
                        return;
                    }

                    var kannTrotzdemGespeichertWerden = message.KannTrotzdemGespeichertWerden;

                    var validationCallback = function() {
                        $("#messagePopup .modal-body").html();
                        if(kannTrotzdemGespeichertWerden) {
                            showSpinner();
                            form.submit();
                        }
                    };

                    if(kannTrotzdemGespeichertWerden) {
                        showWarningMessageBox("Fehler", message.Message, validationCallback, false);
                    } else {
                        showAlertMessageBox("Fehler", message.Message, validationCallback, false);
                    }
                }
            });
        }, false);
}

function validateForm(form) {
    if (form === undefined || form === null) {
        hideSpinner();
        return;
    }
    
    var errorMessage = "";
    var isNoticeMandatory = getIsDocumentationMandatory();
    var numberOfNoticeTextareas = getNumberOfDokutypes();

    var isValid = true;

    if (isNoticeMandatory) {
        if (numberOfNoticeTextareas === 0) {
            var doku = $("#dokufeld").val();

            isValid = doku.length > 0;
        } else {
            for (var i = 0; i < numberOfNoticeTextareas; i++) {
                var d = $("#doku-textarea-" + i).val();

                isValid = d.length > 0;

                if (isValid) {
                    break;
                }
            }
        }

        if (isValid === false) {
            errorMessage = "Bitte füllen Sie " + (numberOfNoticeTextareas > 1 ? "mindestens ein" : "das") + " Dokumentationsfeld aus.<br/>";
        }
    }
    
    var startAndEndDates = getStartAndEndDate();

    if (startAndEndDates === null && isValid) {
        isValid = false;
        errorMessage += "Die Datums- und / oder Zeitangaben sind nicht korrekt.<br/>";
    }

    var isInEditingMode = getIsInEditingMode();
    
    if(isValid === false) {
        hideSpinner();

        showAlertMessageBox("Fehler",
            errorMessage,
            function() {
                $("#messagePopup .modal-body").html();
            },
            true);

        return;
    }

    if(startAndEndDates !== null && isValid) {
        var start = startAndEndDates[0];
        var end = startAndEndDates[1];

        console.log("%c" + start.format("DD.MM.YYYY") + " bis " + end.format("DD.MM.YYYY") + "; isInEditingMode: " + isInEditingMode + "; dateString: " + start.format("DD.MM.YYYY") + "; startString: " + start.format("HH:mm") + "; endString" + end.format("HH:mm"), "color: purple;font-size:12px;font-weight:bold;");

        $.get(getCheckRightsUrl(), { von: start.format("DD.MM.YYYY"), bis: end.format("DD.MM.YYYY"), inEditMode: isInEditingMode, dateString: start.format("DD.MM.YYYY"), startString: start.format("HH:mm"), endString: end.format("HH:mm") }).done(function(result) {
            var message = $.parseJSON(result);

            if(message.Message === null) {
                form.submit();
            } else {
                hideSpinner();

                var kannTrotzdemGespeichertWerden = message.KannTrotzdemGespeichertWerden;
                
                var testCallback = function() {
                    $("#messagePopup .modal-body").html();
                    if(kannTrotzdemGespeichertWerden) {
                        showSpinner();
                        form.submit();
                    }
                };

                if (kannTrotzdemGespeichertWerden) {
                    showWarningMessageBox("Fehler", message.Message, testCallback, false);
                } else {
                    showAlertMessageBox("Fehler", message.Message, testCallback, false);
                }
            }
        });
    }
}

var treeHtml = "";

function buildGoalsTree(treeData) {
    var container = $("#goals-container");

    container.empty();
    treeHtml = "";

    $.each(treeData, function(index) {
        buildGoaldTreeBranch(treeData[index]);
    });

    container.append(treeHtml);
}

function buildGoaldTreeBranch(goalItem) {
    var goalOid = goalItem.ValueListEntryOid;
    var goalHeader = goalItem.Header;
    var isChecked = getSelectedGoalOids() !== null && isInArray(goalOid, getSelectedGoalOids()) ? "checked" : "";

    if(!goalItem.IsLeaf) {
        treeHtml +=
            '<div class="card w-100 mb-3" id="c-' + goalOid + '">' +
                '<div class="card-header px-1">' +
                    '<div class="custom-control custom-checkbox">' +
                        '<input type="checkbox" class="custom-control-input" id="' + goalOid + '" ' + isChecked + ' onclick="checkChildNodes(' + goalOid + ')" onchange="updateSelectedGoals()">' +
                        '<label class="custom-control-label" for="' + goalOid + '">' + goalHeader + "</label>" +
                    "</div>" +
                "</div>" +
            '<div class="card-body px-1 py-1">';

        $.each(goalItem.Children, function(index) {
            buildGoaldTreeBranch(goalItem.Children[index]);
        });

        treeHtml += "</div>";
    } else {
        treeHtml +=
            '<div class="custom-control custom-checkbox">' +
                '<input type="checkbox" class="custom-control-input" id="' + goalOid + '" ' + isChecked + ' onchange="updateSelectedGoals()">' +
                '<label class="custom-control-label" for="' + goalOid + '">' + goalHeader + "</label>" +
            "</div>";
    }
}

function checkChildNodes(parentOid) {
    var rootElement = $("#c-" + parentOid);
    var checkboxes = rootElement.find("input");

    var isChecked = $("#" + parentOid).prop("checked") === true;

    $.each(checkboxes, function(index, checkbox) {
        var box = $(checkbox);
        var id = box.attr("id");

        if(!id !== parentOid) {
            box.prop("checked", isChecked);
        }
    });
}

function getCheckedGoals() {
    var rootElement = $("#goals-container");
    var checkboxes = rootElement.find("input");

    var selectedGoals = "";

    $.each(checkboxes, function(index, checkbox) {
        var box = $(checkbox);
        var id = box.attr("id");

        if (box.prop("checked") === true && !id.includes("goal")) {
            selectedGoals += id + ";";
        }
    });

    return selectedGoals.substr(0, selectedGoals.length - 1);
}

function updateSelectedGoals() {
    var selectedGoals = getCheckedGoals();

    $.get(getUpdateGoalsUrl(), { pGoalOids: selectedGoals });
}

function validateDistanceInput() {
    checkNumberInput("distance");
}

function checkNumberInput(inputId) {
    var input = $("#" + inputId).val();

    var isNum = /^\d+$/.test(input);

    return isNum;
}

function getStartAndEndDate() {
    var startTimePicker = $("#start-time-picker");
    var endTimePicker = $("#end-time-picker");
    var startDatePicker = $("#start-date-picker");
    var endDatePicker = $("#end-date-picker");

    // Bei leeren Start- und Endfeldern. Muss ein Dummydate zurückgeben, 
    // damit das Speichern ohne Angabe der Start- und Endzeit möglich ist.
    if($("#start-time").val().length === 0 || $("#end-time").val().length === 0) {
        var dummyDate = moment(new Date());

        return [dummyDate, dummyDate];
    }

    startTimePicker.datetimepicker("show");
    startTimePicker.datetimepicker("hide");

    startDatePicker.datetimepicker("show");
    startDatePicker.datetimepicker("hide");

    endTimePicker.datetimepicker("show");
    endTimePicker.datetimepicker("hide");

    endDatePicker.datetimepicker("show");
    endDatePicker.datetimepicker("hide");
    
    var startTime = startTimePicker.datetimepicker("date");
    var endTime = endTimePicker.datetimepicker("date");
    var startDate = startDatePicker.datetimepicker("date");
    var endDate = endDatePicker.datetimepicker("date");
    
    var a = startDate === undefined || startDate === null || !startDate.isValid();
    var b = endDatePicker.length === 0 ? false : endDate === undefined || endDate === null || !endDate.isValid();
    var c = startTime === undefined || startTime === null || !startTime.isValid();
    var d = endTime === undefined || endTime === null || !endTime.isValid();
    
    if(a || b || c || d) {
        return null;
    }

    if(endDatePicker.length === 0 || endDate.isValid() === false) {
        endDate = startDate.clone();
    }

    startDate = startDate.hours(startTime.hours());
    startDate = startDate.minutes(startTime.minutes());

    endDate = endDate.hours(endTime.hours());
    endDate = endDate.minutes(endTime.minutes());

    if(endDate.isBefore(startDate)) {
        return null;
    }

    return [startDate, endDate];
}

function toggleHoursMinutesDropdownButton(element) {
    var hoursMinutesDropdownButton = $("#hours-minutes-dropdown-btn");

    var buttonText = $(element).text();
    hoursMinutesDropdownButton.text(buttonText);

    setInputFilter();

    calculateDuration(true);
}

function textCategoryOnClick(categoryId) {
    var childrenContainer = $("#" + categoryId + "-children-container");
    var iconSpan = $("#" + categoryId + "-icon-span");

    var displayValue = childrenContainer.css("display");

    var classToRemove = displayValue === "block" ? "fa-angle-down" : "fa-angle-up";
    var classToAdd = displayValue === "block" ? "fa-angle-up" : "fa-angle-down";

    iconSpan.removeClass(classToRemove);
    iconSpan.addClass(classToAdd);

    childrenContainer.toggle();
}

function textModuleOnClick(textModuleOid) {
    var focusedDokuFeld;

    $.get(getLoadCompleteTextbausteinByOidUrl(), { pTextbausteinOid: textModuleOid }).done(function(textModuleText) {
        if ($("#dokufeld").length > 0) {
            focusedDokuFeld = $("#dokufeld");
        } else {
            var numberOfDokutypes = getNumberOfDokutypes();

            for (var i = 0; i < numberOfDokutypes; i++) {
                var currentElement = $("#doku_" + i);

                if (currentElement.css("display") !== "none") {
                    focusedDokuFeld = $("#doku-textarea-" + i);
                    break;
                }
            }
        }

        var cursorPosition = focusedDokuFeld.prop("selectionStart");
        var v = focusedDokuFeld.val();
        var textBefore = v.substring(0, cursorPosition);
        var textAfter = v.substring(cursorPosition, v.length);

        focusedDokuFeld.val(textBefore + textModuleText + textAfter);

        $("#textbausteine-popup").modal("hide");
    });
}