package solution;

import serialization.GameState;

import java.io.*;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.nio.file.StandardOpenOption;

import java.time.LocalDateTime;

import java.util.*;

public class ScoreManager {

public static void main(String[] args) {

Path path = Paths.get("scores.ser");

List<Score> scores;

if (Files.exists(path)) {

scores = loadScores(path);

} else {

scores = new ArrayList<>();

}

Random numberGenerator = new Random();

scores.add(new Score("Mary", numberGenerator.nextInt(50000), LocalDateTime.now()));

System.out.println("All scores:");

scores.forEach(s -> System.out.println(s));

saveScores(path, scores);

System.out.println("Sorted scores (highest on top):");

Comparator<Score> byScoreDescending =

Collections.reverseOrder(Comparator.comparing(s -> s.score));

scores.stream()

.sorted(byScoreDescending)

.forEach(s -> System.out.println(s));

}

// Serialize scores into a file

private static void saveScores(Path path, List<Score> gameScores) {

try (ObjectOutputStream whereToWrite = new ObjectOutputStream(

Files.newOutputStream(path, StandardOpenOption.CREATE))){

whereToWrite.writeObject(gameScores);

} catch (IOException ioe) {

System.out.println("Can't serialize scores: " + ioe.getMessage());

}

}

// Deserialize the scores from a file

private static List<Score> loadScores(Path path){

List<Score> loadedScores= null;

try (ObjectInputStream whereToReadFrom =

new ObjectInputStream(Files.newInputStream(path))){

loadedScores= (List<Score>) whereToReadFrom.readObject();

} catch (ClassNotFoundException cnfe) {

System.out.println("Can't find the declaration of Score: " + cnfe.getMessage());

} catch (IOException ioe) {

System.out.println("Can't deserialize file: " + ioe.getMessage());

}

return loadedScores;

}

}