Synchronize all access on packs

[xudocci.git] / src / main / java / net / pterodactylus / xdcc / data / Download.java

diff --git a/src/main/java/net/pterodactylus/xdcc/data/Download.java b/src/main/java/net/pterodactylus/xdcc/data/Download.java
index 12b0129..9664f7c 100644 (file)
--- a/src/main/java/net/pterodactylus/xdcc/data/Download.java
+++ b/src/main/java/net/pterodactylus/xdcc/data/Download.java
@@ -21,11 +21,14 @@ import static com.google.common.base.Preconditions.checkNotNull;
 
 import java.io.OutputStream;
 import java.net.InetAddress;
+import java.util.Comparator;
 import java.util.concurrent.atomic.AtomicLong;
 import java.util.concurrent.atomic.AtomicReference;
 
 import net.pterodactylus.irc.DccReceiver;
 
+import com.google.common.base.Function;
+import com.google.common.base.Optional;
 import com.google.common.base.Predicate;
 
 /**
@@ -44,6 +47,40 @@ public class Download {
                }
        };
 
+       /** {@link Comparator} that sorts downloads by their name. */
+       public static final Comparator<Download> BY_NAME = new Comparator<Download>() {
+
+               @Override
+               public int compare(Download leftDownload, Download rightDownload) {
+                       return leftDownload.pack().name().compareToIgnoreCase(rightDownload.pack().name());
+               }
+       };
+
+       /**  {@link Comparator} that sorts running downloads first. */
+       public static final Comparator<Download> BY_RUNNING = new Comparator<Download>() {
+
+               @Override
+               public int compare(Download leftDownload, Download rightDownload) {
+                       return (leftDownload.dccReceiver() != null) ? -1 : (rightDownload.dccReceiver() != null) ? 1 : 0;
+               }
+       };
+
+       /**
+        * Converts a download into the number of seconds left in the transfer at the
+        * current rate.
+        */
+       public static final Function<Download, Optional<Long>> SECONDS_LEFT = new Function<Download, Optional<Long>>() {
+               @Override
+               public Optional<Long> apply(Download download) {
+                       DccReceiver dccReceiver = download.dccReceiver();
+                       if ((dccReceiver == null) || (dccReceiver.size() == -1) || (dccReceiver.currentRate() == 0)) {
+                               return Optional.absent();
+                       }
+                       long secondsLeft = (dccReceiver.size() - dccReceiver.progress()) / dccReceiver.currentRate();
+                       return Optional.of(secondsLeft);
+               }
+       };
+
        /** The bot that is being downloaded from. */
        private final Bot bot;