/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package Controller;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import java.io.File;
import javax.servlet.ServletContext;
import java.io.IOException;
import java.util.List;

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

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import java.util.UUID;
import javax.servlet.http.HttpSession;

/**
 *
 * @author 986137
 */
public class UploadFile extends HttpServlet {

    private static final long serialVersionUID = 1L;
    private final String UPLOAD_DIRECTORY = "C:/Files";
    private String uploadPathMain;
    private String uploadPath;

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet UploadFile</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet UploadFile at " + request.getContextPath () + "</h1>");
            out.println("</body>");
            out.println("</html>");
             */
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        boolean isMultipart = ServletFileUpload.isMultipartContent(request);

        HttpSession session = request.getSession(false);
        String uuid = UUID.randomUUID().toString();
        String lastPhotoName ="";
        // process only if it is multipart content
        ServletContext servletContext = getServletContext();
        //uploadPathMain = servletContext.getRealPath(File.separator);
        uploadPath = uploadPathMain + "/" + "UploadedFiles";
        File destinationDir = new File(uploadPath);

        if (!destinationDir.exists()) {
            destinationDir.mkdir();
        }
        if (isMultipart) {
            // Create a factory for disk-based file items
            FileItemFactory factory = new DiskFileItemFactory();

            // Create a new file upload handler
            ServletFileUpload upload = new ServletFileUpload(factory);
            try {
                // Parse the request
                List<FileItem> multiparts = upload.parseRequest(request);

                for (FileItem item : multiparts) {
                    if (!item.isFormField()) {
                        String name = new File(uuid).getName();
                        name +=".jpg";
                        lastPhotoName = name;
                        item.write(new File(uploadPath + File.separator + name));
                    }
                }
            } catch (Exception e) {
               // e.printStackTrace();
               System.out.println("Error occurred during processing.");
           
            } finally {
                System.out.println("Processing done.");
            }
        }
        session.setAttribute("lastPhotoName", lastPhotoName);
    }

    /**
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
