[IMPL] MkvFileCollector + FileCollector interface + new structure

src/main/java/at/pcgamingfreaks/mkvaudiosubtitlechanger/model/FileAttribute.java

@@ -0,0 +1,57 @@
+package at.pcgamingfreaks.mkvaudiosubtitlechanger.model;
+
+import lombok.Getter;
+import lombok.extern.log4j.Log4j2;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+@Log4j2
+@Getter
+public class FileAttribute {
+    private int id;
+    private String language;
+    private String trackName;
+    private boolean defaultTrack;
+    private boolean forcedTrack;
+    private String type;
+
+    public FileAttribute(int id, String language, String trackName, boolean defaultTrack, boolean forcedTrack, String type) {
+        this.id = id;
+        this.language = language;
+        this.trackName = trackName;
+        this.defaultTrack = defaultTrack;
+        this.forcedTrack = forcedTrack;
+        this.type = type;
+    }
+
+    public static boolean pathIsValid(String path) {
+        File file = new File(path);
+        if(file.isFile()){
+            return file.getAbsolutePath().endsWith(".mkv");
+        }
+        if(file.isDirectory()){
+            try(Stream<Path> paths = Files.walk(Paths.get(path))){
+                List<String> allPaths = paths
+                        .filter(Files::isRegularFile)
+                        .map(f -> f.toAbsolutePath().toString())
+                        .collect(Collectors.toList());
+                for(String filePath : allPaths){
+                    if(! filePath.endsWith(".mkv")){
+                        return false;
+                    }
+                }
+            }catch(IOException e){
+                log.error("Couldn't find file or directory!", e);
+            }
+            return true;
+        }
+        return false;
+    }
+}