function postPutPurchase() {
    loader = $('#overlay, #loader').css('z-index', 1060);
    isValid = true;

    var Remarks = document.getElementById('requestorRemarks').value;
    var ProjectCodeId = document.getElementById('projectCodeId').value;

    const selectedItems = Object.values(selectedProductsMap);
    if (selectedItems.length === 0) {
        showToast('warning', 'Please select items first!', 'Approval failed', 4000);
        return;
    }

    const requestData = selectedItems.map(item => {
        const row = itemTable.rows().nodes().toArray().find(row => {
            const rowData = itemTable.row(row).data();
            return rowData.itemNo === item.itemNo;
        });

        const updatedQty = row
            ? parseFloat($(row).find('.editable-qty').val()) || item.qty
            : item.qty;

        return {
            ItemCartId: item.itemCartId,
            ItemNo: item.itemNo,
            Qty: updatedQty  
        };
    });

    var DateNeeded = document.getElementById('dateNeeded').value;

    if (!DateNeeded) {
        showToast('warning', 'Please choose date needed!', 'P.R. submission failed', 4000);
        confirmUpdateListener = false;
        return;
    }

    if (RequestTypeId == 3) {
        updateDepartmentId();
        var ChargeTo = document.getElementById('departmentId').value;
        if (!ChargeTo) {
            showToast('warning', 'Please choose a department to be in charge of!', 'P.R. submission failed', 4000);
            confirmUpdateListener = false;
            return;
        }
    }

    showConfirmation({
        title: 'Purchasing Requisition',
        message: 'Are you sure you want to proceed? This action cannot be undone.',
        type: 'warning',
        confirmText: 'Yes',
        cancelText: 'No'
    }).then((confirmed) => {
        if (confirmed) {

            var formData = new FormData();

            var fileInput = document.getElementById('fileAttachment');
            if (fileInput.files.length > 0) {
                formData.append('file', fileInput.files[0]);
            }

            formData.append('DateNeeded', DateNeeded);
            formData.append('RequestTypeId', RequestTypeId);
            formData.append('ChargeTo', ChargeTo || '');
            formData.append('Remarks', Remarks || '');
            formData.append('ProjectCodeId', ProjectCodeId || 0);

            formData.append('ItemCartIds', JSON.stringify(requestData));

            $.ajax({
                url: '/ItemMgmt/PostPurchRequest',
                type: 'POST',
                data: formData,
                processData: false,  
                contentType: false,  
                success: function (response) {
                    if (response.success) {
                        itemTable.ajax.reload();
                        $('#addDateNeeded').modal('hide');
                        showToast('success', 'P.R. Successfully Created!', 'Success', 4000);
                        var totalSelectedLabel = $('#totalSelected');
                        totalSelectedLabel.text('');

                        clearFormData();
                    } else {
                        itemTable.ajax.reload();
                        showToast('error', response.response, 'P.R. submission failed', 4000);
                    }
                },
                error: errorHandler,
                beforeSend: function () {
                    loader.show();
                },
                complete: function () {
                    loader.hide();
                }
            });
        }
    });
}
function putItemDetails() {
    loader = $('#overlay, #loader');
    const itemPictureImageInput = document.getElementById("itemPictureImageInput");

    if (itemPictureImageInput && itemPictureImageInput.files.length > 0) {
        const file = itemPictureImageInput.files[0];

        const allowedExtensions = ['.jpg', '.jpeg', '.png'];

        const fileExtension = '.' + file.name.split('.').pop().toLowerCase();
        if (!allowedExtensions.includes(fileExtension)) {
            showToast('error', 'Only .jpg, .jpeg, and .png files are allowed.', 'Invalid File Type', 4000);
            return;
        }

        const maxSizeInBytes = 2 * 1024 * 1024;
        if (file.size > maxSizeInBytes) {
            const fileSizeInMB = (file.size / (1024 * 1024)).toFixed(2);
            showToast('error', `File size (${fileSizeInMB} MB) exceeds the 2MB limit. Please choose a smaller image.`, 'File Too Large', 4000);

            return;
        }

        const reader = new FileReader();
        reader.onload = function (event) {
            sendUpdateRequest({ itemAttachPath: event.target.result }, loader);
        };
        reader.readAsDataURL(file);
    } else {
        sendUpdateRequest({ itemAttachPath: null }, loader);
    }
}
function sendUpdateRequest(data, loader) {
    const formElements = {
        itemNo: document.getElementById('itemNo').value,
        itemAttachId: document.getElementById('itemAttachId').value,
        uomId: document.getElementById('uomId').value,
        itemName: document.getElementById('itemName'),
        itemDescription: document.getElementById('itemDescription'),
        itemLocalName: document.getElementById('itemLocalName'),
        uomName: document.getElementById('uomName'),
        itemQty: document.getElementById('itemQty'),
        itemClassId: document.getElementById('itemClassId').value,
        packagingTypeId: document.getElementById('packagingTypeId').value,
        prTypeId: document.getElementById('prTypeId').value,
        itemColorId: document.getElementById('itemColorId').value,
        itemLocalId: document.getElementById('itemLocalId').value,
        isCommon: document.getElementById('isCommon').value === "true",
        requestTypeId: document.getElementById('requestTypeId')
    };

    ['itemName', 'itemDescription', 'itemLocalName', 'uomName', 'itemQty', 'requestTypeId'].forEach(id => {
        formElements[id].addEventListener('input', removeErrorClass);
    });

    const requiredFields = [
        { element: formElements.itemName, value: formElements.itemName.value },
        { element: formElements.itemDescription, value: formElements.itemDescription.value },
        { element: formElements.itemLocalName, value: formElements.itemLocalName.value },
        { element: formElements.itemQty, value: formElements.itemQty.value, condition: value => value != 0 },
        { element: formElements.uomName, value: formElements.uomName.value },
        { element: formElements.requestTypeId, value: formElements.requestTypeId.value }
    ];

    const isValid = requiredFields.every(field => {
        const isFieldValid = field.condition ? field.condition(field.value) : !!field.value;
        if (!isFieldValid) {
            field.element.classList.add('error-input');
        }
        return isFieldValid;
    });

    if (!isValid) {
        showToast('warning', 'Please fill the required fields!', 'Update item failed', 4000);
        return;
    }

    const itemCategoryId = $('#ItemCategory2Id').val();
    const isMDLD = document.getElementById("mdld").checked;

    const submitData = {
        ItemNo: formElements.itemNo,
        ItemCodeId: ItemCodeId, 
        ItemName: formElements.itemName.value,
        ItemDescription: formElements.itemDescription.value,
        ItemCategoryId: itemCategoryId,
        ItemLocalId: formElements.itemLocalId,
        IsMDLD: isMDLD,
        ItemClassId: formElements.itemClassId,
        PackagingTypeId: formElements.packagingTypeId,
        PRTypeId: formElements.prTypeId,
        UOMId: formElements.uomId,
        ItemColorId: formElements.itemColorId,
        Qty: formElements.itemQty.value,
        ItemAttachPath: data.itemAttachPath,
        ItemAttachId: formElements.itemAttachId,
        IsCommon: formElements.isCommon,
        RequestTypeId: formElements.requestTypeId.value
    };
    showConfirmation({
        title: 'Update Item Details',
        message: 'Are you sure you want to update this item? This action cannot be undone.',
        type: 'warning',
        confirmText: 'Yes, Update',
        cancelText: 'Keep Item'
    }).then((confirmed) => {
        if (confirmed) {
            $.ajax({
                url: '/ItemMgmt/PutItemDetail',
                type: 'POST',
                data: submitData,
                success: function (response) {
                    if (response.success) {
                        clearTextModal();
                        fetchAndRefreshTable();
                        document.getElementById("itemPictureImageInput").value = '';
                        document.getElementById('btnAddToCart').style.display = 'block';
                        showToast('success', 'Updated successfully!', 'Success', 4000);
                    } else {
                        loader.hide();
                        isFullFilled();
                        showToast('error', response.response, title + ' failed', 4000);
                    }
                },
                beforeSend: function () {
                    loader.show();
                },
                complete: function () {
                    loader.hide();
                }
            });
        }
    });
}
function AddToCart(isUpdated) {
    var loader = $('#overlay, #loader');
    var ItemNo = $('#itemNo').val();
    var ItemCategoryId = $('#ItemCategory2Id').val();
    var ItemColorId = $('#itemColorId').val();
    var PackagingTypeId = $('#packagingTypeId').val();
    var ItemAttachId = $('#itemAttachId').val();
    var UOMId = $('#uomId').val();
    var ItemLocalId = $('#itemLocalId').val();

    const message = (ItemCategoryId == 29)
        ? 'This item requires a <strong style="color:red;">PNP permit</strong>. Please coordinate with our <strong style="background-color:yellow;">Security Department</strong> once the PR has been created.'
        : 'Do you want to add this item to your cart? Please note that this action cannot be undone.';

    showConfirmation({
        title: 'Item Cart',
        message: message,
        type: 'warning',
        confirmText: 'Yes',
        cancelText: 'No'
    }).then((confirmed) => {
        if (confirmed) {
        $.ajax({
            url: '/ItemMgmt/PostPutItemCart',
            type: 'POST',
            data: { ItemNo, ItemCategoryId, ItemColorId, PackagingTypeId, ItemAttachId, UOMId, ItemLocalId },
            beforeSend: function () {
                loader.show(); 
            },
            success: function (response) {
                if (response.success) {
                    $('#viewItemDetails').modal('hide');
                    clearTextModal();
                    fetchAndRefreshTable();
                    if (response.cartCount !== undefined) {
                        const cartCountElement = document.getElementById("cartCount");
                        if (cartCountElement) {
                            cartCountElement.textContent = response.cartCount > 0 ? response.cartCount : "0";
                        }
                    }
                    showToast('success', 'The item has been added to your cart successfully.', 'Success', 4000);
                } else {
                    showToast('error', response.response, title + ' failed', 4000);
                }
            },
            error: errorHandler,
            complete: function () {
                loader.hide(); 
            }
        });
        }
    });
}
function postItem(isUpdated) {
    loader = $('#overlay, #loader');

    const itemNameInput = document.getElementById('ItemName');
    const itemDescriptionInput = document.getElementById('ItemDescription');
    const itemCategoryIdInput = document.getElementById('ItemCategoryId');
    const itemCategoryInput = document.getElementById('ItemCategory');

    itemNameInput.addEventListener('input', removeErrorClass);
    itemDescriptionInput.addEventListener('input', removeErrorClass);
    itemCategoryIdInput.addEventListener('input', removeErrorClass);
    itemCategoryInput.addEventListener('input', removeErrorClass);

    const ItemName = itemNameInput.value;
    const ItemDescription = itemDescriptionInput.value;
    const ItemCategoryId = itemCategoryIdInput.value;
    if (!ItemName || !ItemDescription || !ItemCategoryId) {
        showToast('warning', 'Please fill the required fields!', 'Item creation failed', 4000);
        if (!ItemName) {
            itemNameInput.classList.add('error-input');
        }
        if (!ItemDescription) {
            itemDescriptionInput.classList.add('error-input'); 
        }
        if (!ItemCategoryId) {
            itemCategoryInput.classList.add('error-input');
        }
        return; 
    }
    showConfirmation({
        title: 'Item Creation',
        message: 'Are you sure you want to proceed? This action cannot be undone.',
        type: 'warning',
        confirmText: 'Yes',
        cancelText: 'No'
    }).then((confirmed) => {
        if (confirmed) {
            $.ajax({
                url: '/ItemMgmt/PostPutItem',
                type: 'POST',
                data: { ItemName, ItemDescription, ItemCategoryId },
                success: function (response) {
                    if (response.success) {
                        $('#addNewItem').modal('hide');
                        if (!isUpdated == 0) {
                            var data = [];
                            data.itemCodeId = response.itemCodeId;
                            viewItem(data);
                            clearTextModal();
                            fetchAndRefreshTable();
                            showToast('success', 'Update successfully!', 'Success', 4000);
                        } else {
                            clearTextModal();
                            fetchAndRefreshTable();
                            showToast('success', 'Item added successfully!', 'Success', 4000);
                        }
                    } else {
                        loader.hide();
                        showToast('error', response.response, title + ' failed', 4000);
                    }
                },
                beforeSend: function () {
                    loader.show();
                },
                complete: function () {
                    loader.hide();
                }
            });
        }
    })
}
function fetchAndRefreshTable() {
    $.ajax({
        url: '/ItemMgmt/GetItemList',
        type: 'GET',
        success: function (newResponse) {
            if (newResponse && newResponse.data) {
                fetchedData = newResponse.data; 
                itemTable.clear().rows.add(fetchedData).draw();
            } else {
                console.log('No data returned from server.');
            }
        },
        error: function (xhr, error) {
            console.log('Error fetching updated data:', error);
        }
    });
}