/**
 * Title:        The SWORD Project<p>
 * Description:  <p>
 * Copyright:    Copyright (c) CrossWire Java Development Team<p>
 * Company:      CrossWire Bible Society<p>
 * @author CrossWire Java Development Team
 * @version 1.0
 */
package org.crosswire.sword.web;

import org.crosswire.sword.mgr.SWMgr;
import org.crosswire.sword.mgr.SWConfig;
import java.util.zip.*;
import java.util.Enumeration;
import java.io.OutputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FilenameFilter;
import com.objectspace.jgl.HashMap;
import java.util.Vector;

public class PackageMod {

  public PackageMod() {
  }

  public static void copyFileToZip(ZipOutputStream zos, String sourceDir,
                                   String fileName, String prefix) {
    try {
      if ( (prefix.length() > 0) && (!prefix.endsWith("/"))) {
        prefix += "/";
      }
      zos.putNextEntry(new ZipEntry(prefix + fileName));
      fileName = sourceDir + ( (sourceDir.endsWith("/")) ? "" : "/") + fileName;
      FileInputStream fin = new FileInputStream(fileName);
      byte[] buffer = new byte[20000];
      int len;
      while ( (len = fin.read(buffer)) > 0) {
        zos.write(buffer, 0, len);
      }
      fin.close();
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }

  public static long getLastModFile(SWMgr mgr, String sourceDir, String modName) {
    String entry = null;
    Enumeration fileList = null;
    Vector files = new Vector();
    long lastModFile = 0;

    if (!sourceDir.endsWith("/")) {
      sourceDir += "/";
    }

    try {
      if (mgr.config.contains(modName)) {
        /*
                        fileList = section.keys("File");
                        if (fileList.hasMoreElements()) {	// copy each file
                            while (fileList.hasMoreElements()) {
                                files.add((String)fileList.nextElement());
                            }

                        }
                        else {	//copy all files in DataPath directory
         */
        String modDir;
        String modFile;
        String sourceOrig = sourceDir;

        modDir = mgr.config.getProperty(modName, "DataPath");
        if (modDir != null) {
          entry = mgr.config.getProperty(modName, "ModDrv");
          if (entry != null) {
            if (entry.equals("RawLD")
                || entry.equals("RawLD4")
                || entry.equals("zLD")
                || entry.equals("RawGenBook")) {
              modDir = modDir.substring(0, modDir.lastIndexOf('/'));
            }
          }
          if (modDir.startsWith("./")) {
            modDir = modDir.substring(2);
          }

          sourceDir += modDir;
          File dataDir = new File(sourceDir);
          String names[] = dataDir.list();

          for (int i = 0; i < names.length; i++) {
            if ( (!names[i].equals(".")) && (!names[i].equals(".."))) {
              File testFile = new File(dataDir, names[i]);
              if (testFile.canRead()) {
                if (testFile.lastModified() > lastModFile) {
                  lastModFile = testFile.lastModified();
                }
              }
            }
          }
        }
        sourceDir = sourceOrig;
        sourceDir += "mods.d/";

        File dataDir = new File(sourceDir);
        String names[] = dataDir.list(
            new FilenameFilter() {
          public boolean accept(File dir, String name) {
            return name.endsWith(".conf");
          }
        });

        for (int i = 0; i < names.length; i++) {
          if ( (!names[i].equals(".")) && (!names[i].equals(".."))) {
            modFile = sourceDir;
            modFile += names[i];
            SWConfig config = new SWConfig(modFile);
            if (config.contains(modName)) {
              File testFile = new File(dataDir, names[i]);
              if (testFile.canRead()) {
                if (testFile.lastModified() > lastModFile) {
                  lastModFile = testFile.lastModified();
                }
              }
            }
          }
        }
//				}
      }
    }
    catch (Exception e1) {
      e1.printStackTrace();
    }
    return lastModFile;
  }

  public static void addFileNames(Vector target, File directory, String prefix) {
    String []names = directory.list();
    for (int i = 0; i < names.length; i++) {
      if ((!names[i].equals(".")) && (!names[i].equals(".."))) {
        File child = new File(directory, names[i]);
        if (child.isDirectory()) {
          addFileNames(target, child, prefix+names[i]+"/");
        }
        else {
          target.add(prefix+names[i]);
        }
      }
    }
  }

  public static void sendToZipStream(OutputStream os, SWMgr mgr,
                                     String sourceDir, String modName,
                                     boolean triggerInstall, String internalZipSubdir) {
    ZipOutputStream zstream = new ZipOutputStream(os);
    HashMap section = null;
    String entry = null;
    Enumeration fileList = null;

    if (!sourceDir.endsWith("/")) {
      sourceDir += "/";
    }

    try {
      section = (HashMap) mgr.config.sections.get(modName);

      if (section != null) {

        fileList = section.keys("File");
        if (fileList.hasMoreElements()) { // copy each file
          while (fileList.hasMoreElements()) {
            copyFileToZip(zstream, sourceDir, (String) fileList.nextElement(),
                          internalZipSubdir);
          }
        }
        else { //copy all files in DataPath directory
          String modDir;
          String modFile;
          String sourceOrig = sourceDir;

          modDir = (String) section.get("DataPath");
          if (modDir != null) {
            entry = (String) section.get("ModDrv");
            if (entry != null) {
              if (entry.equals("RawLD")
                  || entry.equals("RawLD4")
                  || entry.equals("zLD")
                  || entry.equals("RawGenBook")) {
                modDir = modDir.substring(0, modDir.lastIndexOf('/'));
              }
            }
            if (modDir.startsWith("./")) {
              modDir = modDir.substring(2);
            }

            sourceDir += modDir;
            File dataDir = new File(sourceDir);

            Vector names = new Vector();
            addFileNames(names, dataDir, "");

            for (int i = 0; i < names.size(); i++) {
              modFile = modDir;
              if (!modFile.endsWith("/")) {
                modFile += "/";
              }
              modFile += names.get(i);
              copyFileToZip(zstream, sourceOrig, modFile, internalZipSubdir);
              }
            }
            sourceDir = sourceOrig;
            sourceDir += "mods.d/";

          File dataDir = new File(sourceDir);
          String names[] = dataDir.list(
              new FilenameFilter() {
            public boolean accept(File dir, String name) {
              return name.endsWith(".conf");
            }
          });

          for (int i = 0; i < names.length; i++) {
            if ( (!names[i].equals(".")) && (!names[i].equals(".."))) {
              modFile = sourceDir;
              modFile += names[i];
              SWConfig config = new SWConfig(modFile);
              if (config.sections.get(modName) != null) {
                if (triggerInstall) {
                  String dir = (internalZipSubdir.length() > 0) ? (internalZipSubdir + "/newmods/") : "newmods/";
                  copyFileToZip(zstream, sourceOrig + "mods.d/", names[i], dir);
                }
                else {
                  copyFileToZip(zstream, sourceOrig, "mods.d/" + names[i], internalZipSubdir);
                }
              }
            }
          }
        }
        zstream.flush();
        zstream.close();
      }
    }
    catch (Exception e1) {
      e1.printStackTrace();
    }
  }
}