package NET.worlds.network;

import NET.worlds.core.IniFile;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URLConnection;
import java.util.Hashtable;

public class DirTimeStamp {
   private static Hashtable<URL, DirTimeStamp> _tsEntries = new Hashtable<URL, DirTimeStamp>();
   private URL _name;
   private long _mtime;
   private boolean _loaded = false;

   private DirTimeStamp(URL url) {
      this._name = url;

      assert url.isRemote();
   }

   private static synchronized DirTimeStamp lookup(URL url) {
      DirTimeStamp t = _tsEntries.get(url);
      if (t == null) {
         t = new DirTimeStamp(url);
         _tsEntries.put(url, t);
      }

      return t;
   }

   private void getMTime() {
      this._mtime = 0L;

      try {
         int r = (int)(Math.random() * 1000000.0);
         int retryCount = IniFile.gamma().getIniInt("NetCacheRetries", 1);
         boolean offline = CacheEntry.getOffline();
         if (offline) {
            this._loaded = true;
            return;
         }

         if (offline) {
            retryCount = 1;
         }

         java.net.URL u = DNSLookup.lookup(new java.net.URL(this._name.unalias() + "?" + r));

         while (true) {
            try {
               URLConnection uc = u.openConnection();
               this._mtime = uc.getLastModified();
               break;
            } catch (IOException var7) {
               if (--retryCount <= 0 || var7 instanceof FileNotFoundException) {
                  throw var7;
               }

               System.out.println("Exception " + var7 + " querying " + this._name + ", retrying...");
            }
         }

         this._loaded = true;
      } catch (FileNotFoundException var8) {
         System.out.println("Warning: timestamp " + this._name + " not found.");
         this._loaded = true;
      } catch (Exception var9) {
         System.out.println("Timestamp query error: " + var9 + " accessing " + this._name);
         this._loaded = true;
      }
   }

   public static long request(URL url) {
      URL tsURL = URL.make(url, "timestamp.dir");
      String u = url.getInternal();
      int i = u.lastIndexOf(47);
      if (i > 0) {
         int j = u.lastIndexOf(47, i - 1) + 1;
         if (j > 11) {
            String par = u.substring(j, i);
            if (url.endsWith("upgrades.lst")) {
               if (!par.equals("gdkup") && !par.equals("newup") && !par.equals("3DCDup")) {
                  tsURL = URL.make(u.substring(0, j) + "timestamp.upgrades");
               } else {
                  tsURL = URL.make(url, "timestamp.upgrades");
               }
            } else if (par.equals("cgi-bin")) {
               return 0L;
            }
         }
      }

      DirTimeStamp t = lookup(tsURL);
      synchronized (t) {
         if (!t._loaded) {
            t.getMTime();
         }
      }

      return t._mtime;
   }
}