package at.gv.egiz.simpleSigning;

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

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.io.FileUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import at.gv.egiz.simpleSigning.helper.SessionHelper;

public class FinishSignature extends HttpServlet {

	/**
	 * 
	 */
	private static final long serialVersionUID = 7338000172211889255L;

	private static final String PARAM_PDFURL = "pdfurl";

	private static final Logger logger = LoggerFactory
			.getLogger(FinishSignature.class);

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		this.doProcess(req, resp);
	}

	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		this.doProcess(req, resp);
	}

	protected void doProcess(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		try {
			logger.info("[" + req.getSession().getId()
					+ "]: finishing Signature");

			String pdfUrl = req.getParameter(PARAM_PDFURL);

			logger.info("[" + req.getSession().getId() + "]: EventID {}",
					SessionHelper.getEventID(req));
			logger.info("[" + req.getSession().getId() + "]: PDFURL: {}",
					pdfUrl);
			logger.info("[" + req.getSession().getId() + "]: TargetURL: {}",
					SessionHelper.getTargetURL(req));

			// Generate JS Code to postMessage to EventId with Success

			String success = FileUtils.readFileToString(FileUtils
					.toFile(PDFASJsServlet.class
							.getResource("/js/success_response.js")));

			success = success.replace("##REPLACE##EVENTID##",
					SessionHelper.getEventID(req));
			success = success.replace("##REPLACE##URL##", pdfUrl);
			success = success.replace("##REPLACE##TARGETURL##",
					SessionHelper.getTargetURL(req));

			String postman = FileUtils
					.readFileToString(FileUtils.toFile(PDFASJsServlet.class
							.getResource("/js/postman.js")));

			String combined = postman + success;

			String html = FileUtils.readFileToString(FileUtils
					.toFile(PDFASJsServlet.class
							.getResource("/html/script_exec.html")));

			html = html.replace("##REPLACE##SCRIPT##", combined);

			SessionHelper.killSession(req);

			resp.setContentType("text/html");
			OutputStream os = resp.getOutputStream();
			os.write(html.getBytes());
			os.close();
		} catch (Throwable e) {
			logger.error("[" + req.getSession().getId()
					+ "]: failed to finish signature", e);
			throw new ServletException("Generic Exception");
		}
	}
}