Migrate CachedFileProcessor to proxy pattern

src/main/java/at/pcgamingfreaks/mkvaudiosubtitlechanger/Main.java

@@ -1,10 +1,11 @@
 package at.pcgamingfreaks.mkvaudiosubtitlechanger;
 
 import at.pcgamingfreaks.mkvaudiosubtitlechanger.impl.FileFilter;
+import at.pcgamingfreaks.mkvaudiosubtitlechanger.impl.processors.FileProcessor;
 import at.pcgamingfreaks.mkvaudiosubtitlechanger.impl.processors.MkvFileProcessor;
 import at.pcgamingfreaks.mkvaudiosubtitlechanger.model.InputConfig;
 import at.pcgamingfreaks.mkvaudiosubtitlechanger.impl.validation.ValidationExecutionStrategy;
-import at.pcgamingfreaks.mkvaudiosubtitlechanger.impl.processors.CachedMkvFileProcessor;
+import at.pcgamingfreaks.mkvaudiosubtitlechanger.impl.processors.CachedFileProcessor;
 import at.pcgamingfreaks.mkvaudiosubtitlechanger.impl.kernel.AttributeUpdaterKernel;
 import at.pcgamingfreaks.mkvaudiosubtitlechanger.impl.kernel.CoherentAttributeUpdaterKernel;
 import at.pcgamingfreaks.mkvaudiosubtitlechanger.impl.kernel.DefaultAttributeUpdaterKernel;
@@ -53,7 +54,7 @@ public class Main implements Runnable {
         }
 
         FileFilter fileFilter = new FileFilter(config.getExcluded(), config.getIncludePattern(), config.getFilterDate());
-        MkvFileProcessor fileProcessor = new CachedMkvFileProcessor(config.getMkvToolNix(), fileFilter);
+        FileProcessor fileProcessor = new CachedFileProcessor(new MkvFileProcessor(config.getMkvToolNix(), fileFilter));
 
         AttributeUpdaterKernel kernel = config.getCoherent() != null
                 ? new CoherentAttributeUpdaterKernel(config, fileProcessor)

src/main/java/at/pcgamingfreaks/mkvaudiosubtitlechanger/impl/processors/CachedFileProcessor.java

@@ -0,0 +1,42 @@
+package at.pcgamingfreaks.mkvaudiosubtitlechanger.impl.processors;
+
+import at.pcgamingfreaks.mkvaudiosubtitlechanger.exceptions.MkvToolNixException;
+import at.pcgamingfreaks.mkvaudiosubtitlechanger.impl.Cache;
+import at.pcgamingfreaks.mkvaudiosubtitlechanger.model.FileInfo;
+import org.apache.commons.lang3.tuple.Pair;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.List;
+
+public class CachedFileProcessor implements FileProcessor {
+    private final FileProcessor processor;
+    Cache<String, List<File>> fileCache = new Cache<>();
+    Cache<Pair<String, Integer>, List<File>> directoryCache = new Cache<>();
+    Cache<File, FileInfo> attributeCache = new Cache<>();
+
+    public CachedFileProcessor(FileProcessor processor) {
+        this.processor = processor;
+    }
+
+    @Override
+    public List<File> loadFiles(String path) {
+        return fileCache.retrieve(path, processor::loadFiles);
+    }
+
+    @Override
+    public List<File> loadDirectories(String path, int depth) {
+        return directoryCache.retrieve(Pair.of(path, depth), key -> processor.loadDirectories(key.getLeft(), key.getRight()));
+    }
+
+    @Override
+    public FileInfo readAttributes(File file) {
+        return attributeCache.retrieve(file, processor::readAttributes);
+    }
+
+    @Override
+    public void update(FileInfo fileInfo) throws IOException, MkvToolNixException {
+        processor.update(fileInfo);
+    }
+
+}

src/main/java/at/pcgamingfreaks/mkvaudiosubtitlechanger/impl/processors/CachedMkvFileProcessor.java

@@ -1,20 +0,0 @@
-package at.pcgamingfreaks.mkvaudiosubtitlechanger.impl.processors;
-
-import at.pcgamingfreaks.mkvaudiosubtitlechanger.impl.Cache;
-import at.pcgamingfreaks.mkvaudiosubtitlechanger.impl.FileFilter;
-import at.pcgamingfreaks.mkvaudiosubtitlechanger.model.FileInfo;
-
-import java.io.File;
-
-public class CachedMkvFileProcessor extends MkvFileProcessor {
-    Cache<File, FileInfo> cache = new Cache<>();
-
-    public CachedMkvFileProcessor(File mkvToolNixInstallation, FileFilter fileFilter) {
-        super(mkvToolNixInstallation, fileFilter);
-    }
-
-    @Override
-    public FileInfo readAttributes(File file) {
-        return cache.retrieve(file, super::readAttributes);
-    }
-}