Babushka/scripts/CSharp/Common/Savegame/SavegameService.cs

using Godot;
using Godot.Collections;
using FileAccess = Godot.FileAccess;

namespace Babushka.scripts.CSharp.Common.Savegame;

public static class SavegameService
{
    public static readonly string SavePath = "res://savegame/savegame.json";

    public static Dictionary<string, Variant> SaveDatas = new ();

    public static void AppendSave(SaveData saveData)
    {
        string key = string.Concat(saveData.SceneName, "_", saveData.Id);

        if (SaveDatas.TryGetValue(key, out var value))
        {
            SaveDatas[key] = saveData.JsonPayload;
        }
        else
        {
            SaveDatas.Add(key, saveData.JsonPayload);
        }
    }

    public static void Save()
    {
        string json = Json.Stringify(SaveDatas, indent: "\t");
        using var file = FileAccess.Open(SavePath, FileAccess.ModeFlags.Write);
        file.StoreString(json);
        GD.Print($"Game saved to {file}");
    }
}