@Component
public class PDFGenerator {

    public static final float SEPARATOR_BORDER_WIDTH = 0.1f;
    public static final float SEPARATOR_HEIGHT = 5F;

    public void generateFromJavaObject() throws IOException, DocumentException, URISyntaxException {
        Document document = new Document();
        PdfWriter.getInstance(document, new FileOutputStream("E:/iTextHelloWorld.pdf"));
        document.open();

        PdfPTable invoiceSection = createFirstSection();
        PdfPTable consumerAndSellerSection = createConsumerAndSellerSection();
        PdfPTable detailsSection = createDetailsSection();


        document.add(invoiceSection);
        document.add(consumerAndSellerSection);
        document.add(detailsSection);
        document.close();
    }

    private PdfPTable createFirstSection() {
        PdfPTable table = new PdfPTable(2);
        table.setHorizontalAlignment(Element.ALIGN_RIGHT);
        table.setWidthPercentage(60);

        PdfPCell header = new PdfPCell();
        header.setHorizontalAlignment(Element.ALIGN_CENTER);
        Font headerFont = FontFactory.getFont("/fonts/arial.ttf",
                BaseFont.IDENTITY_H, BaseFont.EMBEDDED, 16, Font.BOLD, BaseColor.BLACK);
        header.setPhrase(new Phrase("Commercial Invoice", headerFont));
        header.setColspan(2);
        table.addCell(header);

        Font font = FontFactory.getFont("/fonts/arial.ttf",
                BaseFont.IDENTITY_H, BaseFont.EMBEDDED, 10, Font.BOLD, BaseColor.BLACK);

        table.addCell(createCell("Consignment Number:", font, Element.ALIGN_CENTER));
        table.addCell(createCell("text", font, Element.ALIGN_CENTER));
        addSeparator(table, 2);

        table.addCell(createCell("Invoice Number:", font, Element.ALIGN_CENTER));
        table.addCell(createCell("text", font, Element.ALIGN_CENTER));
        addSeparator(table, 2);

        table.addCell(createCell("Shipping Date:", font, Element.ALIGN_CENTER));
        table.addCell(createCell("text", font, Element.ALIGN_CENTER));
        addSeparator(table, 2);

        table.addCell(createCell("Reason for Exportation: (sale/return/non comercial operarion)", font, Element.ALIGN_CENTER));
        table.addCell(createCell("text", font, Element.ALIGN_CENTER));
        addSeparator(table, 2);

        table.addCell(createCell("Invoice Currency:", font, Element.ALIGN_CENTER));
        table.addCell(createCell("text", font, Element.ALIGN_CENTER));
        addSeparator(table, 2);
        return table;
    }

    private PdfPTable createConsumerAndSellerSection() {
        PdfPTable consumerAndSellerSection = new PdfPTable(2);
        consumerAndSellerSection.setWidthPercentage(100);

        Font headerFont = FontFactory.getFont("/fonts/arial.ttf",
                BaseFont.IDENTITY_H, BaseFont.EMBEDDED, 11, Font.BOLD, BaseColor.BLACK);

        Font font = FontFactory.getFont("/fonts/arial.ttf",
                BaseFont.IDENTITY_H, BaseFont.EMBEDDED, 11, Font.NORMAL, BaseColor.BLACK);

        consumerAndSellerSection.addCell(createCell("SELLER (full name and adress)", headerFont, Element.ALIGN_CENTER));
        consumerAndSellerSection.addCell(createCell(" CONSUMER (full name and adress)", headerFont, Element.ALIGN_CENTER));

        consumerAndSellerSection.addCell(createCell("seller", font, Element.ALIGN_LEFT));
        consumerAndSellerSection.addCell(createCell("consumer", font, Element.ALIGN_LEFT));

        consumerAndSellerSection.addCell(createCell("seller", font, Element.ALIGN_LEFT));
        consumerAndSellerSection.addCell(createCell("consumer", font, Element.ALIGN_LEFT));

        consumerAndSellerSection.addCell(createCell("seller", font, Element.ALIGN_LEFT));
        consumerAndSellerSection.addCell(createCell("consumer", font, Element.ALIGN_LEFT));

        consumerAndSellerSection.addCell(createCell("seller", font, Element.ALIGN_LEFT));
        consumerAndSellerSection.addCell(createCell("consumer", font, Element.ALIGN_LEFT));
        addSeparator(consumerAndSellerSection, 2);
        return consumerAndSellerSection;
    }


    private PdfPTable createDetailsSection() {
        int tableSize = 15;
        PdfPTable detailsSection = new PdfPTable(tableSize);
        detailsSection.setWidthPercentage(100);

        Font headerFont = FontFactory.getFont("/fonts/arial.ttf",
                BaseFont.IDENTITY_H, BaseFont.EMBEDDED, 10, Font.BOLD, BaseColor.BLACK);

        Font font = FontFactory.getFont("/fonts/arial.ttf",
                BaseFont.IDENTITY_H, BaseFont.EMBEDDED, 10, Font.NORMAL, BaseColor.BLACK);


        detailsSection.addCell(createCell("Description", headerFont, Element.ALIGN_CENTER, 6));
        detailsSection.addCell(createCell("Quantity", headerFont, Element.ALIGN_CENTER));
        detailsSection.addCell(createCell("Weight per unit", headerFont, Element.ALIGN_CENTER));
        detailsSection.addCell(createCell("Total Weight (kg)", headerFont, Element.ALIGN_CENTER));
        detailsSection.addCell(createCell("UNSPSC Code", headerFont, Element.ALIGN_CENTER, 2));
        detailsSection.addCell(createCell("Country of origin", headerFont, Element.ALIGN_CENTER, 2));
        detailsSection.addCell(createCell("Unit price", headerFont, Element.ALIGN_CENTER));
        detailsSection.addCell(createCell("Total Value", headerFont, Element.ALIGN_CENTER));

        detailsSection.addCell(createCell("text", font, Element.ALIGN_CENTER, 6));
        detailsSection.addCell(createCell("text", font, Element.ALIGN_CENTER));
        detailsSection.addCell(createCell("text", font, Element.ALIGN_CENTER));
        detailsSection.addCell(createCell("text", font, Element.ALIGN_CENTER));
        detailsSection.addCell(createCell("text", font, Element.ALIGN_CENTER, 2));
        detailsSection.addCell(createCell("text", font, Element.ALIGN_CENTER, 2));
        detailsSection.addCell(createCell("text", font, Element.ALIGN_CENTER));
        detailsSection.addCell(createCell("text", font, Element.ALIGN_CENTER));

        addSeparator(detailsSection, tableSize);
        detailsSection.addCell(createCell("Number of places:", headerFont, Element.ALIGN_CENTER, 3));
        detailsSection.addCell(createCell("text", headerFont, Element.ALIGN_CENTER, 3));
        detailsSection.addCell(createCellSeparator(9));

        addSeparator(detailsSection, tableSize);
        detailsSection.addCell(createCell("Tipe of packing:", headerFont, Element.ALIGN_CENTER, 3));
        detailsSection.addCell(createCell("text", headerFont, Element.ALIGN_CENTER, 3));
        detailsSection.addCell(createCellSeparator(9));

        addSeparator(detailsSection, tableSize);
        detailsSection.addCell(createCell("Gross weight:", headerFont, Element.ALIGN_CENTER, 3));
        detailsSection.addCell(createCell("text", headerFont, Element.ALIGN_CENTER, 4));
        detailsSection.addCell(createCell("кг/kg", headerFont, Element.ALIGN_CENTER));
        detailsSection.addCell(createCell("Delivery cost", headerFont, Element.ALIGN_CENTER, 4));
        detailsSection.addCell(createCell("", headerFont, Element.ALIGN_CENTER, 4));

        detailsSection.addCell(createCellSeparator(8));
        detailsSection.addCell(createCell("Insurance", headerFont, Element.ALIGN_CENTER, 4));
        detailsSection.addCell(createCell("", headerFont, Element.ALIGN_CENTER, 4));

        detailsSection.addCell(createCellSeparator(8));
        detailsSection.addCell(createCell("Other expenses", headerFont, Element.ALIGN_CENTER, 4));
        detailsSection.addCell(createCell("", headerFont, Element.ALIGN_CENTER, 4));

        detailsSection.addCell(createCellSeparator(8));
        detailsSection.addCell(createCell("Total cost", headerFont, Element.ALIGN_CENTER, 4));
        detailsSection.addCell(createCell("", headerFont, Element.ALIGN_CENTER, 4));

        addSeparator(detailsSection, tableSize);
        detailsSection.addCell(createCell("Delivery terms INCOTERMS:", headerFont, Element.ALIGN_CENTER, 3));
        detailsSection.addCell(createCell("", headerFont, Element.ALIGN_CENTER, 3));
        detailsSection.addCell(createCellSeparator(9));

        addSeparator(detailsSection, tableSize);
        detailsSection.addCell(createCell("I'm confirming that information in invoice is exact and correct", headerFont, Element.ALIGN_LEFT, tableSize));
        addSeparator(detailsSection, tableSize);

        detailsSection.addCell(createCell("Sender", headerFont, Element.ALIGN_LEFT, 10));
        detailsSection.addCell(createCell("Sender signature", headerFont, Element.ALIGN_LEFT, 3));
        detailsSection.addCell(createCell("Date", headerFont, Element.ALIGN_LEFT, 2));

        detailsSection.addCell(createCell("text", font, Element.ALIGN_LEFT, 10));
        detailsSection.addCell(createCell("text", font, Element.ALIGN_LEFT, 3));
        detailsSection.addCell(createCell("text", font, Element.ALIGN_LEFT, 2));

        return detailsSection;
    }

    private PdfPCell createCell(String text, Font font, int alignment) {
        PdfPCell cell = new PdfPCell();
        cell.setHorizontalAlignment(alignment);
        Phrase phrase = new Phrase(text, font);
        cell.setPhrase(phrase);
        return cell;
    }

    private PdfPCell createCell(String text, Font font, int alignment, int colspan) {
        PdfPCell cell = new PdfPCell();
        cell.setHorizontalAlignment(alignment);
        cell.setColspan(colspan);
        Phrase phrase = new Phrase(text, font);
        cell.setPhrase(phrase);
        return cell;
    }

    private PdfPCell createCellSeparator(int colspan) {
        PdfPCell cell = new PdfPCell();
        cell.setColspan(colspan);
        cell.setBorderWidthTop(0);
        cell.setBorderWidthBottom(0);
        return cell;
    }

    private void addSeparator(PdfPTable table, int colspan) {
        PdfPCell cell = createCellSeparator(colspan);
        cell.setFixedHeight(SEPARATOR_HEIGHT);
        cell.setBorderWidthLeft(SEPARATOR_BORDER_WIDTH);
        cell.setBorderWidthRight(SEPARATOR_BORDER_WIDTH);
        table.addCell(cell);
    }