src/game/java/com/mojang/realmsclient/util/RealmsPersistence.java

package com.mojang.realmsclient.util;

import com.google.gson.annotations.SerializedName;
import com.mojang.logging.LogUtils;
import com.mojang.realmsclient.dto.GuardedSerializer;
import com.mojang.realmsclient.dto.ReflectionBasedSerialization;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.NoSuchFileException;
import java.nio.file.Path;
import net.minecraft.client.Minecraft;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;
import org.slf4j.Logger;

@OnlyIn(Dist.CLIENT)
public class RealmsPersistence {
    private static final String FILE_NAME = "realms_persistence.json";
    private static final GuardedSerializer GSON = new GuardedSerializer();
    private static final Logger LOGGER = LogUtils.getLogger();

    public RealmsPersistence.RealmsPersistenceData read() {
        return readFile();
    }

    public void save(RealmsPersistence.RealmsPersistenceData p_167617_) {
        writeFile(p_167617_);
    }

    public static RealmsPersistence.RealmsPersistenceData readFile() {
        Path path = getPathToData();

        try {
            String s = Files.readString(path, StandardCharsets.UTF_8);
            RealmsPersistence.RealmsPersistenceData realmspersistence$realmspersistencedata = GSON.fromJson(
                s, RealmsPersistence.RealmsPersistenceData.class
            );
            if (realmspersistence$realmspersistencedata != null) {
                return realmspersistence$realmspersistencedata;
            }
        } catch (NoSuchFileException nosuchfileexception) {
        } catch (Exception exception) {
            LOGGER.warn("Failed to read Realms storage {}", path, exception);
        }

        return new RealmsPersistence.RealmsPersistenceData();
    }

    public static void writeFile(RealmsPersistence.RealmsPersistenceData p_90173_) {
        Path path = getPathToData();

        try {
            Files.writeString(path, GSON.toJson(p_90173_), StandardCharsets.UTF_8);
        } catch (Exception exception) {
        }
    }

    private static Path getPathToData() {
        return Minecraft.getInstance().gameDirectory.toPath().resolve("realms_persistence.json");
    }

    @OnlyIn(Dist.CLIENT)
    public static class RealmsPersistenceData implements ReflectionBasedSerialization {
        @SerializedName("newsLink")
        public String newsLink;
        @SerializedName("hasUnreadNews")
        public boolean hasUnreadNews;
    }
}