package com.instantbank.collections.commonQueuing.web;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import javax.ejb.FinderException;
import com.instantbank.collections.commonQueuing.ejb.QueueServices;
import com.instantbank.collections.commonQueuing.ejb.QueueServicesHome;
import com.instantbank.collections.util.FilterChain;
import com.instantbank.collections.util.InstantbankException;
import com.instantbank.collections.util.ServiceLocator;
import com.instantbank.collections.util.StringFormat;

public class DownloadController extends HttpServlet {
  private String debug = "";
  private QueueServices services;
  private HttpSession session;


  public void init(ServletConfig config) throws ServletException {
    super.init(config);
    try {
      QueueServicesHome home = (QueueServicesHome)ServiceLocator.instance().createEJB("QueueServicesHome", QueueServicesHome.class, false);
      services = home.create();
    }
    catch(Exception e) {}
  }


  public void dispatch(HttpServletRequest request, HttpServletResponse response, String action) throws ServletException, IOException, FinderException {
    String useCase = "";

    if(action.equals("preview")) {
      useCase = "PreviewDownload";
    }
    else if(action.equals("generate")) {
      useCase = "GenerateDownloadAdHoc";
    }
    else if(action.equals("distribute")) {
      useCase = "DistributeDownloadAdHoc";
    }
    ServletContext sc = getServletConfig().getServletContext();
    RequestDispatcher rd = sc.getRequestDispatcher("/commonQueuing_web/CommonQueuingDispatcher.jsp?useCase=" + useCase);
    rd.forward(request, response);
  }


  public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    doPost(request, response);
  }


  public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    String action = "";
    com.instantbank.collections.util.FilterChain chain;

    try {
      action = request.getParameter("action");
      session = request.getSession(false);
      session.setAttribute("hasException", "0");
      try {
        chain = new com.instantbank.collections.util.FilterChain(true, getServletConfig().getServletContext());
        if(chain.processFilter(request, response)) {
          return;
        }
        if(action.equals("initialize")) {
          initialize(request, response);
        }
        else if(action.equals("getList")) {
          getList(request, response);
        }
        else if(action.equals("save")) {
          save(request, response);
        }
        else if(action.equals("preview")) {
          dispatch(request, response, action);
        }
        else if(action.equals("generate")) {
          dispatch(request, response, action);
        }
        else if(action.equals("distribute")) {
          dispatch(request, response, action);
        }
        else {
          throw new InstantbankException("112001", "Action " + action + " not supported");
        }
      }
      catch(Exception e) {
        throw new InstantbankException(e, "112002", "Failed to execute controller action " + action + " (" + debug + ")");
      }
    }
    catch(InstantbankException e) {
      session.setAttribute("hasException", "1");
      session.setAttribute("Exception", e);
      if(response.isCommitted()) {
        return;
      }
      response.sendRedirect("../main_web/ControllerError.jsp?showTechnical=0");
    }
  }


  public void getList(HttpServletRequest request, HttpServletResponse response) throws ServletException, InstantbankException, IOException, FinderException {
    String responseXml = "";

    String category = request.getParameter("category");
    Long queueType = new Long(request.getParameter("typeId"));
    String queueName = request.getParameter("name");
    Long rowNum = new Long(request.getParameter("rownum"));
    Long companyId = (Long)session.getAttribute("companyId");
    String objectType = (String)request.getParameter("objectType");
    responseXml = services.getDownloads(companyId, objectType, category, queueType, queueName, rowNum.longValue(), 10);
    responseXml = StringFormat.cleanXml(responseXml);
    response.setContentType("text/html");
    OutputStreamWriter osw = new OutputStreamWriter(response.getOutputStream());
    PrintWriter out = new PrintWriter(osw);
    out.println("<script>");
    out.print("top.xml='");
    out.print(responseXml);
    out.println("';");
    out.println("top.showDownloads();");
    out.println("</script>");
    out.close();
  }


  private void initialize(HttpServletRequest request, HttpServletResponse response) throws ServletException, InstantbankException, IOException, FinderException {
    Long companyId = (Long)session.getAttribute("companyId");
    Long downloadId;
    String xml = null;

    downloadId = new Long(request.getParameter("downloadId"));
    if(downloadId.longValue() == 0) {
      xml = services.newDownload();
    }
    else {
      xml = services.getDownload(downloadId, companyId);
    }
    request.setAttribute("data", xml);
    ServletContext sc = getServletConfig().getServletContext();
    RequestDispatcher rd = sc.getRequestDispatcher("/commonQueuing_web/DownloadView.jsp?useCase=SetUpDownload&title=Set Up Downloads");
    rd.forward(request, response);
  }


  public void save(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, FinderException {
    Long companyId = (Long)session.getAttribute("companyId");
    String data = request.getParameter("data");
    Long downloadId = new Long(0);
    String objectType = (String)request.getParameter("objectType");
    Long userId = (Long)session.getAttribute("userId");
    Long validDownloadId = new Long(0);
    String xml = "";

    try {
      downloadId = services.saveDownload(companyId, userId, data);
      xml = services.getDownload(downloadId, companyId);
      request.setAttribute("data", xml);
      validDownloadId = downloadId;
    }
    catch(Exception e) {
      session.setAttribute("hasException", "1");
      session.setAttribute("Exception", e);
      request.setAttribute("data", data);
    }
    finally {
      ServletContext sc = getServletConfig().getServletContext();
      RequestDispatcher rd = sc.getRequestDispatcher("/commonQueuing_web/DownloadView.jsp?useCase=SetUpDownload&title=Set Up Downloads");
      request.setAttribute("Reset", "DownloadController?action=initialize&objectType=" + objectType + "&downloadId=" + validDownloadId);
      rd.forward(request, response);
    }
  }


  public String getServletInfo() {
    return "com.instantbank.collections.commonQueuing.web.DownloadController Information";
  }
}