Reimplement basic statistics

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

@@ -6,8 +6,8 @@ import lombok.extern.log4j.Log4j2;
 @Log4j2
 @Getter
 public class AttributeConfig {
-    private String audioLanguage;
-    private String subtitleLanguage;
+    private final String audioLanguage;
+    private final String subtitleLanguage;
 
     public AttributeConfig(String audioLanguage, String subtitleLanguage) {
         this.audioLanguage = audioLanguage;

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

@@ -9,7 +9,7 @@ public enum ConfigProperty {
     SAFE_MODE("safe-mode"),
     HELP("help");
 
-    private String property;
+    private final String property;
 
     ConfigProperty(String property) {
         this.property = property;

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

@@ -1,4 +1,53 @@
 package at.pcgamingfreaks.mkvaudiosubtitlechanger.model;
 
+import lombok.AccessLevel;
+import lombok.Getter;
+
+import java.io.File;
+
+@Getter
 public class ResultStatistic {
+    private static final String result = "Files should change: %s%n" +
+            "Files successfully changed: %s%n" +
+            "Files failed changing: %s%n" +
+            "Files already fitting config: %s%n" +
+            "Runtime: %ss";
+
+    private int filesShouldChange = 0;
+    private int filesSuccessfullyChanged = 0;
+    private int filesFailed = 0;
+    private int filesAlreadyFit = 0;
+    @Getter(AccessLevel.NONE)
+    private long startTime = 0;
+    private long runtime = 0;
+
+    public void shouldChange(File file, FileInfoDto fileInfo) {
+        filesShouldChange++;
+    }
+
+    public void success(File file, FileInfoDto fileInfo) {
+        filesSuccessfullyChanged++;
+    }
+
+    public void failure(File file, FileInfoDto fileInfo) {
+        filesFailed++;
+    }
+
+    public void fits(File file, FileInfoDto fileInfo) {
+        filesAlreadyFit++;
+    }
+
+    public void startTimer() {
+        startTime = System.currentTimeMillis();
+    }
+
+    public void stopTimer() {
+        runtime = System.currentTimeMillis() - startTime;
+    }
+
+    @Override
+    public String toString() {
+        return String.format(result, filesShouldChange, filesSuccessfullyChanged, filesFailed, filesAlreadyFit,
+                runtime / 1000);
+    }
 }