/*
 * Image from URL:
 * Read image data from a URL and place it in a PDF document
 * 
 * Read an image from the URL and store in a PDFlib virtual file (PVF). 
 * Then load the image data from the PVF file and place it on the page.
 *
 * Required software: PDFlib/PDFlib+PDI/PPS 10
 * Required data: none
 */
package com.pdflib.cookbook.pdflib.images;

import java.io.*;
import java.net.*;
import com.pdflib.pdflib;
import com.pdflib.PDFlibException;

public class image_from_url {
    public static void main(String argv[]) {
        /* This is where the data files are. Adjust as necessary. */
        String searchpath = "../input";
        String outfile = "image_from_url.pdf";
        String title = "Image from URL";

        pdflib p = null;
        int exitcode = 0;
        final String image_url = "https://www.pdflib.com/fileadmin/cookbooks/PDFlib/PDFlib-Cookbook/input/kraxi_logo.tif";

        try {
            p = new pdflib();
            
            p.set_option("searchpath={" + searchpath + "}");

            /* This means we must check return values of load_image() etc. */
            p.set_option("errorpolicy=return");

            if (p.begin_document(outfile, "") == -1)
                throw new Exception("Error: " + p.get_errmsg());

            p.set_info("Creator", "PDFlib Cookbook");
            p.set_info("Title", title);
            
            // Download image data from URL and store it in a PVF file
            if (p.download("/pvf/image", "createpvf source={url=" + image_url + "}") == -1)
            	throw new Exception("Error: " + p.get_errmsg());

            // Load the image from the PVF
            int image = p.load_image("auto", "/pvf/image", "");
            if (image == -1)
                throw new Exception("Error: " + p.get_errmsg());

            // Start a page, place the image, and finish the page
            p.begin_page_ext(400, 200, "");
            p.fit_image(image, 50, 100, "");
            p.end_page_ext("");

            /* Delete the virtual file to free the allocated memory */
            p.delete_pvf("/pvf/image");

            p.end_document("");

        } catch (PDFlibException e) {
            System.err.println("PDFlib exception occurred:");
            System.err.println("[" + e.get_errnum() + "] " + e.get_apiname() +
                ": " + e.get_errmsg());
            exitcode = 1;
        } catch (Exception e) {
            System.err.println(e);
            exitcode = 1;
        } finally {
            if (p != null) {
                p.delete();
            }
            System.exit(exitcode);
        }
    }
}