feature(domain): Verwaltung der Highscores und der Durchschnittszeiten

Implementierung des HighscoreManagers, der die erzielten Highscores und die Durschnittszeit ausliest und in der entsprechenden Highscore-Datei speichert.

src/main/java/de/deversmann/domain/HighscoreManager.java

@@ -4,17 +4,99 @@ import java.io.*;
 import java.util.*;
 
 public class HighscoreManager {
-    private List<Integer> highscores
+
+    private Map<String, List<HighscoreEntry>> highscoreMap;
 
     public HighscoreManager() {
-        this.highscores = new ArrayList<>();
+        this.highscoreMap = new HashMap<>();
     }
 
-    public void addHighscore(int score) {
-        highscores.add(score);
+    public void addHighscore(String puzzleName, String playerName, long timeSeconds, int errorCount) {
+        highscoreMap.putIfAbsent(puzzleName, new ArrayList<>());
+        highscoreMap.get(puzzleName).add(new HighscoreEntry(playerName, timeSeconds, errorCount));
     }
 
-    public List<Integer> getHighscores() {
-        return new ArrayList<>(highscores);
+    public List<HighscoreEntry> getHighscores(String puzzleName) {
+        return highscoreMap.getOrDefault(puzzleName, Collections.emptyList());
+    }
+
+    public double getAverageTime(String puzzleName) {
+        List<HighscoreEntry> entries = highscoreMap.get(puzzleName);
+        if (entries == null || entries.isEmpty()) {
+            return -1;
+        }
+        long sum = 0;
+        for (HighscoreEntry e : entries) {
+            sum += e.getTimeSeconds();
+        }
+        return (double) sum / entries.size();
+    }
+
+    public void saveSinglePuzzle(String puzzleName, String filename) throws IOException {
+        List<HighscoreEntry> entries = getHighscores(puzzleName);
+
+        entries.sort(Comparator
+                .comparingInt(HighscoreEntry::getErrorCount)
+                .thenComparingLong(HighscoreEntry::getTimeSeconds));
+
+        double avgTime = getAverageTime(puzzleName);
+
+        try (BufferedWriter writer = new BufferedWriter(new FileWriter(filename))) {
+            if (avgTime < 0) {
+                writer.write("Durchschnittszeit: Keine Einträge");
+            } else {
+                writer.write(String.format("Durchschnittszeit: %.2f s", avgTime));
+            }
+            writer.newLine();
+            writer.newLine();
+
+            writer.write(String.format("%-6s | %-5s | %-6s | %-15s",
+                    "Platz", "Zeit", "Fehler", "Name"));
+            writer.newLine();
+            writer.write("------------------------------------------------------------");
+            writer.newLine();
+
+            int place = 1;
+            for (HighscoreEntry e : entries) {
+                writer.write(String.format("%-6s | %-5d | %-6d | %-15s",
+                        place + ".",
+                        e.getTimeSeconds(),
+                        e.getErrorCount(),
+                        e.getPlayerName()));
+                writer.newLine();
+                place++;
+            }
+        }
+    }
+
+    public void loadSinglePuzzle(String puzzleName, String filename) throws IOException {
+        File file = new File(filename);
+        if (!file.exists()) {
+            System.out.println("Highscore-Datei " + filename + " existiert nicht; wird neu erstellt.");
+            return;
+        }
+
+        try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
+            // Durchschnittszeit und Header überspringen
+            reader.readLine();
+            reader.readLine();
+            reader.readLine();
+            reader.readLine();
+
+            String line;
+            while ((line = reader.readLine()) != null) {
+                String[] parts = line.split("\\|");
+                if (parts.length < 4) continue;
+
+                String timeStr = parts[1].trim();
+                String errorStr = parts[2].trim();
+                String nameStr = parts[3].trim();
+
+                long timeSeconds = Long.parseLong(timeStr);
+                int errorCount = Integer.parseInt(errorStr);
+
+                addHighscore(puzzleName, nameStr, timeSeconds, errorCount);
+            }
+        }
     }
 }