using System;
using System.Collections.Generic;
using UnityEngine;
/*where T : Task*/
public abstract class SceneBaseDataManager<T> : MonoBehaviour
{
    protected virtual string OBJECT_FOLDER_NAME => "";
    protected virtual string OBJECT_LIST_NAME => "";

    protected bool IsNewGame = true;  // change to use global "gateway"

    protected DataListManager<T> StaticDataList;
    protected DataListManager<T> DynamicDataList;

    protected SceneBaseDataLoader<T> DataLoader { get; set; }

    public static SceneBaseDataManager<T> Instance; // { get; private set; }

    public virtual void Awake()
    {

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

    protected static SceneBaseDataManager<T> GetObjectType()
    {
        return GameObject.FindObjectOfType<SceneBaseDataManager<T>>();
    }

    protected static SceneBaseDataManager<T> CreateInstance()
    {
        var managerGameObject = HandleManagerOnScene();

        if (!managerGameObject)
            throw new Exception("Game object to srote Managers scripts not found on scene!!!");

        return managerGameObject.AddComponent<SceneBaseDataManager<T>>();
    }

    /// <summary>
    /// Function to handel GLOBAL manager object from scene
    /// </summary>
    /// <returns></returns>
    protected static GameObject HandleManagerOnScene()
    {
        return GameObject.FindGameObjectWithTag("Manager").transform.Find("DataManger").gameObject;
    }

    protected virtual bool LoadData(SceneElementTypeEnum type, ref DataListManager<T> dataListManager)
    {        
        try 
        {
            dataListManager.SetList(
                DataLoader.LoadData(type) as List<T>
            );
            
            return true;
        }
        catch (Exception e) {
            Debug.LogWarning(e.Message);
        }

        return false;
    }

    protected virtual bool SaveData(List<T> _elements, SceneElementTypeEnum type)
    {
        try
        {
            Debug.Log("SaveData");
            Debug.Log(DataLoader);
            DataLoader.SaveData(_elements, type);

            return true;
        }
        catch (Exception e) {
            Debug.LogError(e.Message);
        }

        return false;
    }

    /// <summary>
    /// Part of static list CURD methods
    /// </summary>
    public bool LoadStaticData()
    {
        return LoadData(SceneElementTypeEnum.Static, ref StaticDataList);
    }
    
    protected virtual void AddElementToStaticList(T _element)
    {
        StaticDataList.AddElementToList(_element);
    }

    protected virtual void RemoveElementFromStaticList(T _element)
    {
        StaticDataList.RemoveElementFromList(_element);
    }
    
    public bool SaveStaticData()
    {
        // TODO 
        // how to get list
        // 1. List in UI manager should be synchronized with list in this manager

        // approach:
        // 1. get from outside, update local list && us it
        // 2. Handle list synchronized all the time & pass local list

        Debug.Log("SaveStaticData");
        return SaveData(StaticDataList.GetList(), SceneElementTypeEnum.Static);
    }


    /// <summary>
    /// Part of dynamic list CURD methods
    /// </summary>
    public bool LoadDynamicData()
    {
        return LoadData(SceneElementTypeEnum.Dynamic, ref DynamicDataList);
    }

    protected virtual void AddElementToDynamicList(T _element)
    {
        DynamicDataList.AddElementToList(_element);
    }

    protected virtual void RemoveElementFromDynamicList(T _element)
    {
        DynamicDataList.RemoveElementFromList(_element);
    }
    
    public bool SaveDynamicData()
    {
        // TODO 
        // how to get list
        // 1. List in UI manager should be synchronized with list in this manager

        // approach:
        // 1. get from outside, update local list && us it
        // 2. Handle list synchronized all the time & pass local list
        Debug.Log("SaveDynamicData");

        return SaveData(DynamicDataList.GetList(), SceneElementTypeEnum.Dynamic);
    }
}