package at.gv.egiz.pdfas.web.helper;

import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;

import at.gv.egiz.pdfas.common.utils.StreamUtils;
import at.gv.egiz.pdfas.web.exception.PdfAsWebException;

public class RemotePDFFetcher {

	public static byte[] fetchPdfFile(String pdfURL) throws PdfAsWebException {
		URL url;
		try {
			url = new URL(pdfURL);
		} catch (MalformedURLException e) {
			throw new PdfAsWebException("Not a valid URL!", e);
		}
		if(url.getProtocol().equals("http") || url.getProtocol().equals("https")) {
			try {
				InputStream is = url.openStream();
				return StreamUtils.inputStreamToByteArray(is);
			} catch (Exception e) {
				throw new PdfAsWebException("Failed to fetch pdf document!", e);
			}
		} else {
			throw new PdfAsWebException("Failed to fetch pdf document protocol " + url.getProtocol() + " is not supported");
		}
	}
}