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package net.sowgro.npehero.levelapi;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.time.LocalDate;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class Leaderboard {
public final ObservableList<LeaderboardEntry> entries = FXCollections.observableArrayList();
private final Gson json = new GsonBuilder().serializeNulls().setPrettyPrinting().create();
private final File file;
public Leaderboard(File file) throws IOException{
this.file = file;
read();
}
/**
* Adds new leaderboardEntry to list and updates json file
* @param name: The players name
* @param score The players score
* @throws IOException If there is a problem updating the leaderboard file.
*/
public void add(String name, int score) throws IOException {
entries.add(new LeaderboardEntry(name, score, LocalDate.now().toString()));
save();
}
/**
* Writes leaderboard to json file
* @throws IOException If there are problems writing to the file.
*/
public void save() throws IOException {
file.createNewFile();
List<Map<String, Object>> data = json.fromJson(new FileReader(file), List.class);
for (LeaderboardEntry cur : entries) {
Map<String, Object> obj = new HashMap<>();
obj.put("name", cur.name);
obj.put("score", cur.score);
obj.put("date", cur.date);
data.add(obj);
}
FileWriter fileWriter = new FileWriter(file);
json.toJson(data, fileWriter);
fileWriter.close();
}
/**
* Reads in json leaderboard and assigns populates list with leaderboardEntries
* @throws IOException If there are problems reading the file
*/
public void read() throws IOException {
if (!file.exists()) {
return;
}
List<Map<String, Object>> data = json.fromJson(new FileReader(file), List.class);
if (data == null) {
return;
}
for (Map<String, Object> cur: data) {
String name = (String) cur.getOrDefault("name", null);
int score = (int) (double) cur.getOrDefault("score", -1);
String date = (String) cur.getOrDefault("date", null);
if (name == null || score == -1 || date == null) {
System.out.println("dbg: bad entry skipped");
continue; // discard invalid entries
}
entries.add(new LeaderboardEntry(name, score, date));
}
}
}
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