Started adding support for downloading online files

src/main/java/eu/crushedpixel/replaymod/registry/DownloadedFileHandler.java

@@ -0,0 +1,43 @@
+package eu.crushedpixel.replaymod.registry;
+
+import eu.crushedpixel.replaymod.ReplayMod;
+import eu.crushedpixel.replaymod.recording.ConnectionEventHandler;
+import org.apache.commons.io.FilenameUtils;
+
+import java.io.File;
+import java.util.HashMap;
+
+public class DownloadedFileHandler {
+
+    private HashMap<Integer, File> downloadedFiles = new HashMap<Integer, File>();
+
+    private File downloadFolder;
+
+    public DownloadedFileHandler() {
+        downloadFolder = new File(ReplayMod.replaySettings.getDownloadPath());
+        downloadFolder.mkdirs();
+
+        for(File f : downloadFolder.listFiles()) {
+            try {
+                Integer i = Integer.valueOf(FilenameUtils.getBaseName(f.getAbsolutePath()));
+                if(i != null) {
+                    downloadedFiles.put(i, f);
+                }
+            } catch(Exception e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    public void addToIndex(int id) {
+        try {
+            File f = new File(downloadFolder, id+"."+ConnectionEventHandler.ZIP_FILE_EXTENSION);
+        } catch(Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public File getFileForID(int id) {
+        return downloadedFiles.get(id);
+    }
+}