Scriptum/Assets/Scripts/REFACTORING/Application/Panel/Task/SaveTaskManager.cs

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

public class SaveTaskDataManager : SaveModelSystem<Task>
{
    public override bool SaveModelItem(Task model)
    {
        return base.SaveModelItem(model);
    }

    public override bool SaveModelList(List<Task> list)
    {
        BinaryFormatter formatter = new BinaryFormatter();

        Debug.Log("Saved Quest at " + Path);
        
        if (!Directory.Exists(Path)) Directory.CreateDirectory(Path);
        
        FileStream stream = new FileStream(
            Path  + GetFileName(ObjectListName), 
            FileMode.Create
        );

        formatter.Serialize(stream, list);
        stream.Close();

        return true;
    }

    public override Task LoadModelItem()
    {
        return base.LoadModelItem();
    }

    public override List<Task> LoadModelList()
    {
        string path = Path + GetFileName(ObjectListName);

        if(File.Exists(path))
        {
            BinaryFormatter formatter = new BinaryFormatter();
            FileStream stream = new FileStream(path, FileMode.Open);

            List<Task> questsList = formatter.Deserialize(stream) as List<Task>;
            stream.Close();

            return questsList;
        } else {
            Debug.Log("Save file not found in " + path);
        }

        return new List<Task>();
    }
}