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

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

    public bool Save<T>(T so, string filename) where T : ScriptableObject
    {
        string fullDirPath = Application.persistentDataPath + DIR_PATH;
        string fullFilePath = Application.persistentDataPath + DIR_PATH + $"{filename}.txt";

        Debug.Log($"SAVE:{fullFilePath}");
        if (!Directory.Exists(fullDirPath))
        {
            Directory.CreateDirectory(fullDirPath);
        }

        using (FileStream fs = File.Create(fullFilePath))
        {
            var json = JsonUtility.ToJson(so);
            byte[] info = new System.Text.UTF8Encoding(true).GetBytes(json);
            fs.Write(info, 0, info.Length);
            fs.Close();
        }

        Debug.Log($"SAVE:SUCCESS");
        return true;
    }

    public T Load<T>(ref T so, string filename) where T : ScriptableObject
    {
        string fullDirPath = Application.persistentDataPath + DIR_PATH;
        string fullFilePath = Application.persistentDataPath + DIR_PATH + $"{filename}.txt";

        Debug.Log($"LOAD:{fullFilePath}");

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

        if (File.Exists(fullFilePath))
        {
            using (FileStream fs = File.Open(fullFilePath, FileMode.Open))
            {
                using (StreamReader reader = new StreamReader(fs))
                {
                    var file = reader.ReadToEnd();
                    so = ScriptableObject.CreateInstance<T>();
                    JsonUtility.FromJsonOverwrite(file, so);
                    fs.Close();
                }
            }
        }

        Debug.Log($"LOAD:SUCCESS");
        return default;
    }

    public bool LoadOld<T>(ref T so, string filename) where T : ScriptableObject
    {
        string fullDirPath = Application.persistentDataPath + DIR_PATH;
        string fullFilePath = Application.persistentDataPath + DIR_PATH + $"{filename}.txt";

        Debug.Log($"LOAD:{fullFilePath}");

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

        BinaryFormatter bf = new BinaryFormatter();

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

        Debug.Log($"LOAD:SUCCESS");
        return true;
    }
}