oslo_boating_project/boat-reservation-logic/src/main/java/pl/sudra/service/PdfServiceImpl.java

package pl.sudra.service;

import com.itextpdf.text.Chunk;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Service;
import pl.sudra.domain.User;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;

@Service
public class PdfServiceImpl implements PdfService{
    @Override
    public OutputStream generatePDF(User user, HttpServletResponse response) {
        try{
            OutputStream o = response.getOutputStream();
            response.setCharacterEncoding("UTF-8");
            response.setContentType("application/pdf");
            response.setHeader("Content-Disposition", "inline; filename=" + user.getUsername() + ".pdf");
            Document pdf = new Document();
            PdfWriter.getInstance(pdf, o);
            pdf.open();
            pdf.add(new Paragraph("Pdf example - Spring Framework & iText library"));
            pdf.add(new Paragraph(Chunk.NEWLINE));
            PdfPTable table = new PdfPTable(2);
            table.addCell("FirsName");
            table.addCell("appUser.getFirstName()");
            table.addCell("LastName");
            table.addCell("appUser.getLastName()");
            table.addCell("PESEL");
            table.addCell("appUser.getPesel().getPESEL()");
            table.addCell("Login");
            table.addCell("appUser.getLogin()");
            table.addCell("Email");
            table.addCell("appUser.getEmail()");
            table.addCell("Active");
            table.addCell("String.valueOf(appUser.isEnabled())");
            pdf.add(table);
            pdf.close();
            o.close();
            return o;
        }
        catch (IOException| DocumentException e){
            e.printStackTrace();
        }
        return null;
    }
    @Override
    public ByteArrayOutputStream generatePDF(User user) {
        try{
            ByteArrayOutputStream o = new ByteArrayOutputStream();
            Document pdf = new Document();
            PdfWriter.getInstance(pdf, o);
            pdf.open();
            pdf.add(new Paragraph("Pdf example - Spring Framework & iText library"));
            pdf.add(new Paragraph(Chunk.NEWLINE));
            PdfPTable table = new PdfPTable(2);
            table.addCell("FirsName");
            table.addCell("appUser.getFirstName()");
            table.addCell("LastName");
            table.addCell("appUser.getLastName()");
            table.addCell("PESEL");
            table.addCell("appUser.getPesel().getPESEL()");
            table.addCell("Login");
            table.addCell("appUser.getLogin()");
            table.addCell("Email");
            table.addCell("appUser.getEmail()");
            table.addCell("Active");
            table.addCell("String.valueOf(appUser.isEnabled())");
            pdf.add(table);
            pdf.close();
            o.close();
            return o;
        }
        catch (IOException| DocumentException e){
            e.printStackTrace();
        }
        return null;
    }
}