package SwordMod;

import org.crosswire.sword.web.PackageMod;
import org.crosswire.sword.mgr.SWMgr;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import java.io.File;
import java.io.FileOutputStream;
import java.util.Date;
import com.objectspace.jgl.HashMap;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class Verify
    extends HttpServlet {
  static Object packageBuildSemephore = new Object();

  //Initialize global variables
  public void init(ServletConfig config) throws ServletException {
    super.init(config);
  }

  public void service(javax.servlet.http.HttpServletRequest request,
                      javax.servlet.http.HttpServletResponse response) throws
      javax.servlet.ServletException, java.io.IOException {

	String sections[] = new String[] { "attic", "avattic", "av", "beta", "experimental", "exp", "wycliffe" };
	String spsection = "";
	for (String s : sections) {
		String sparam = request.getParameter(s);
		if (sparam != null && !sparam.equals("")) {
			spsection = s;
			break;
		}
	}
	if ("exp".equals(spsection)) spsection = "experimental";	// handle old "exp" param for backward compat

    String modName = null;
    String pkgType = null;
    String mgrDir = "/home/ftp/pub/sword/"+spsection+"raw/";
    response.setContentType("text/html");
    try {
      boolean rebuild = true;

      modName = request.getParameterValues("modName")[0];
      pkgType = request.getParameterValues("pkgType")[0];

      // assert we have a valid module name request
      if (SWMgr.getInstance(mgrDir).config.sections.get(modName) == null) {
        return;
      }

      // assert we have a valid type
      String [] validTypes = new String [] { "raw", "rawzip", "win", "mac" };
      java.util.Arrays.sort(validTypes);
      if (java.util.Arrays.binarySearch(validTypes, pkgType) < 0) {
        return;
      }

      // must be for some backward compat, or old links from external sites.  Remove sometime in the future.
      if ("raw".equals(pkgType)) {
        pkgType = "rawzip";
      }
      // -----

      File dest = new File("/home/ftp/pub/sword/" + spsection + "packages/" + pkgType + "/" + modName + ".zip");
      if (dest.canRead()) {
        long timeMade = dest.lastModified();
        if (PackageMod.getLastModFile(SWMgr.getInstance(mgrDir), mgrDir + "/",
                                      modName) < timeMade) {
          rebuild = false;
        }
      }
      if (rebuild) {
        dest.delete();
        FileOutputStream outFile = new FileOutputStream(dest);
        if (pkgType.equals("win")) {
          ZipOutputStream zstream = new ZipOutputStream(outFile);
          File dataDir = new File("/home/sword/winmodinst/");
          String names[] = dataDir.list();
          for (int i = 0; i < names.length; i++) {
            if ( (!names[i].equals(".")) && (!names[i].equals(".."))) {
              PackageMod.copyFileToZip(zstream, "/home/sword/winmodinst/",
                                       names[i], "");
            }
          }
          zstream.putNextEntry(new ZipEntry("data.zip"));
          PackageMod.sendToZipStream(zstream, SWMgr.getInstance(mgrDir),
                                     mgrDir + "/", modName, true, "");
          zstream.close();
        }
        else if ("mac".equals(pkgType)) {
          PackageMod.sendToZipStream(outFile, SWMgr.getInstance(mgrDir),
                                     mgrDir + "/", modName, false, modName+".swd");
        }
        else {    // raw
          PackageMod.sendToZipStream(outFile, SWMgr.getInstance(mgrDir),
                                     mgrDir + "/", modName, false, "");
        }
        outFile.flush();
        outFile.close();
      }
    }
    catch (Exception e) {
      e.printStackTrace();
    }
    finally {
      try {
        String url = "/ftpmirror/pub/sword/" + spsection + "packages/" + pkgType + "/" + modName + ".zip";
        synchronized (packageBuildSemephore) {
          FileOutputStream log = new FileOutputStream(
              "/var/log/httpd/pkgDownloads", true);
          log.write(new String(pkgType + "|" + modName +
                               "|" + new Date() + "\n").getBytes());
          log.close();
        }
        response.getOutputStream().println(
            "<HTML><HEAD><META HTTP-EQUIV=\"Refresh\" CONTENT=\"0;URL=" + url +
            "\"></HEAD><BODY><A HREF=" + url +
            ">Click here to download if it doesn't start automatically</A>");
        HashMap section = (HashMap) SWMgr.getInstance(mgrDir).config.sections.
            get(modName);
        String about = (String) section.get("About");
        String desc = (String) section.get("Description");
        if (about != null) {
          response.getOutputStream().println("<br /><br /> <h2>About: " + desc +
                                             "</h2><br />");

          about = about.replaceAll("\\\\pard", "");
          about = about.replaceAll("\\\\par", "<br />");
          about = about.replaceAll("\\\\\\w+", "");
          response.getOutputStream().println(about);
        }

        response.getOutputStream().println("</BODY></HTML>");
        response.getOutputStream().close();
      }
      catch (Exception e1) {
        e1.printStackTrace();
      }
    }
  }
}