using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using UnityEngine;

public class ODUnityObjectMapper : MonoBehaviour
{
    #region Define

    public const string MapperResourcePath = "ODUnityExtension/ObjectMapping/ObjectMapper";

    #endregion

    private static ODUnityObjectMapper s_objectMapper;
    public static ODUnityObjectMapper ObjectMapper
    {
        get
        {
            if (s_objectMapper != null)
            {
                return s_objectMapper;
            }

            s_objectMapper = Resources.Load<GameObject>(MapperResourcePath).GetComponent<ODUnityObjectMapper>();
            if (s_objectMapper == null)
            {
                Debug.LogError($"ObjectMapper not found at {MapperResourcePath}. GameplayMachines need this to save UnityObjects properly.");
            }

            return s_objectMapper;
        }
    }

    public List<string> WhiteListPath = new List<string>()
    {
        
    };

    public List<UnityEngine.Object> AllUnityObjects;
    public List<string> AllUnityObjectGUIDs;

    private Dictionary<UnityEngine.Object, string> m_dict;
    private Dictionary<string, UnityEngine.Object> m_reverseDict;
    private void EnsureDict()
    {
        if (m_dict == null || m_reverseDict == null)
        {
            m_dict = new Dictionary<Object, string>();
            m_reverseDict = new Dictionary<string, Object>();
            int count = AllUnityObjects.Count;
            for (int i = 0; i < count; i++)
            {
                m_dict.Add(AllUnityObjects[i], AllUnityObjectGUIDs[i]);
                m_reverseDict.Add(AllUnityObjectGUIDs[i], AllUnityObjects[i]);
            }
        }
    }

    public string GetObjectGUID(UnityEngine.Object obj)
    {
        EnsureDict();

        string result;
        if (!m_dict.TryGetValue(obj, out result))
        {
            return null;
        }

        return result;
    }

    public UnityEngine.Object GetObject(string guid)
    {
        EnsureDict();

        UnityEngine.Object result;
        if (!m_reverseDict.TryGetValue(guid, out result))
        {
            return null;
        }

        return result;
    }
}