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package com.groupdocs.ui;

import java.io.IOException;
import java.io.InputStream;

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

import com.groupdocs.viewer.domain.options.PdfFileOptions;
import com.groupdocs.viewer.handler.ViewerHtmlHandler;

@WebServlet("/download/pdf")
public class DownloadPdfServlet
        extends HttpServlet {
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        response.setContentType("application/pdf");
        String filename = request.getParameter("file");
        ViewerHtmlHandler handler = Utils.createViewerHtmlHandler();
        
        PdfFileOptions o = new PdfFileOptions();
        String watermarkText = request.getParameter("watermarkText");
        if(watermarkText!=null && watermarkText.length()>0)
        	o.setWatermark(Utils.getWatermark(watermarkText,request.getParameter("watermarkColor"),
        			request.getParameter("watermarkPosition"),request.getParameter("watermarkWidth")));
        
        InputStream pdf = null;
        try {
            pdf = handler.getPdfFile(filename,o).getStream();
        } catch (Exception x) {
            throw new RuntimeException(x);
        }

        Utils.writeToResponse(pdf, response);
    }
}