/*
 * Example written by Bruno Lowagie in answer to
 * http://stackoverflow.com/questions/36523371
 */
package sandbox.acroforms;

import com.itextpdf.text.DocumentException;
import com.itextpdf.text.pdf.AcroFields;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfStamper;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * @author Bruno Lowagie (iText Software)
 */
public class FillForm {
    
    public static final String SRC = "resources/pdfs/CertificateOfExcellence.pdf";
    public static final String DEST = "results/acroforms/certificate.pdf";
    
    public static void main(String[] args) throws DocumentException, IOException {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new FillForm().manipulatePdf(SRC, DEST);
    }
    public void manipulatePdf(String src, String dest) throws DocumentException, IOException {
        PdfReader reader = new PdfReader(src);
        PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
        AcroFields form = stamper.getAcroFields();
        form.setField("course", "Copying and Pasting from StackOverflow");
        form.setField("name", "Some dude on StackOverflow");
        form.setField("date", "April 10, 2016");
        form.setField("description",
            "In this course, people consistently ignore the existing documentation completely. "
            + "They are encouraged to do no effort whatsoever, but instead post their questions "
            + "on StackOverflow. It would be a mistake to refer to people completing this course "
            + "as developers. A better designation for them would be copy/paste artist. "
            + "Only in very rare cases do these people know what they are actually doing. "
            + "Not a single student has ever learned anything substantial during this course.");
        stamper.setFormFlattening(true);
        stamper.close();
    }
    
}