using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
using UnityEngine;

public class SaveLoadController : MonoBehaviour
{
    public static SaveLoadController Instance;

    private const string DIR_PATH = "/game_save/players/";
    private const string FILE_PATH = "players.txt";

    private void Awake()
    {
        transform.parent = null;

        if (Instance == null)
        {
            Instance = this;
            DontDestroyOnLoad(gameObject);
        }
        else if (Instance == this)
        {
            Destroy(gameObject);
        }
    }

    public void Save<T>(T so) where T: ScriptableObject
    {
        string fullDirPath = Application.persistentDataPath + DIR_PATH;
        string fullFilePath = Application.persistentDataPath + DIR_PATH + FILE_PATH;

        if (!Directory.Exists(fullDirPath))
        {
            Directory.CreateDirectory(fullDirPath);
        }

        BinaryFormatter bf = new BinaryFormatter();
        FileStream fs = File.Create(fullFilePath);
        var json = JsonUtility.ToJson(so);
        bf.Serialize(fs, json);
        fs.Close();
    }

    public void Load<T>(ref T so) where T: ScriptableObject
    {
        string fullDirPath = Application.persistentDataPath + DIR_PATH;
        string fullFilePath =  Application.persistentDataPath + DIR_PATH + FILE_PATH;

        Debug.Log(fullFilePath);
        Debug.Log(fullDirPath);

        if (!Directory.Exists(fullDirPath))
        {
            Directory.CreateDirectory(fullDirPath);
        }

        BinaryFormatter bf = new BinaryFormatter();

        if (File.Exists(fullFilePath))
        {
            FileStream fs = File.Open(fullFilePath, FileMode.Open);
            so = ScriptableObject.CreateInstance<T>();
            JsonUtility.FromJsonOverwrite((string)bf.Deserialize(fs), so);
            
            fs.Close();
        }
        else
        {
            so = ScriptableObject.CreateInstance<T>();
        }
    }
}