package de.swingbe.pdfbox;

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDPageContentStream;
import org.apache.pdfbox.pdmodel.font.PDFont;
import org.apache.pdfbox.pdmodel.font.PDType0Font;

import java.io.File;
import java.io.IOException;

/**
 * Creates a "Hello World" PDF using the built-in Helvetica font.
 * <p>
 * The example is taken from the PDF file format specification.
 */
public class HelloWorldTTF implements Runnable {

    private final String fileOutput;
    private final String msg;
    private final String ttfPath;

    public HelloWorldTTF(String fileOutput, String msg, String ttfPath) {
        this.fileOutput = fileOutput;
        this.msg = msg;
        this.ttfPath = ttfPath;
    }

    @Override
    public void run() {
        System.out.println("inside : " + Thread.currentThread().getName());

        if (fileOutput == null || msg == null) {
            System.err.println("usage: " + HelloWorldTTF.class.getName() + " <output-file> <Message>");
            System.exit(1);
        }

        // Create a document and add a page to it
        PDDocument document = new PDDocument();
        PDPage page = new PDPage();
        document.addPage(page);

        // Create a new font object selecting one of the PDF base fonts
        PDFont font = null;
        try {
            font = PDType0Font.load(document, new File(ttfPath));
        } catch (IOException e) {
            e.printStackTrace();
        }

        if (font != null) {
            // Start a new content stream which will "hold" the to be created content
            PDPageContentStream contentStream = null;
            try {
                contentStream = new PDPageContentStream(document, page);
                // Define a text content stream using the selected font, moving the cursor and drawing the msg
                contentStream.beginText();
                contentStream.setFont(font, 12);
                contentStream.newLineAtOffset(100, 700);
                contentStream.showText(msg);
                contentStream.endText();

                // Make sure that the content stream is closed:
                contentStream.close();

                // Save the results and ensure that the document is properly closed:
                document.save(fileOutput);
                document.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        } else {
            System.err.println("font NOT available");
            System.exit(1);
        }
    }
}