using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Sirenix.OdinInspector;
using KairoEngine.Core;

namespace KairoEngine.CharacterSystem
{
    /// <summary>
    /// Singleton that stores serialized data from scenes.
    /// </summary>
    public class DataManager : SerializedMonoBehaviour
    {
        #region Singleton
        private static DataManager dataManager;
        public static DataManager instance
        {
            get {
                if(!dataManager)
                {
                    dataManager = FindObjectOfType (typeof(DataManager)) as DataManager;
                    if(!dataManager)
                    {
                        //Debug.LogError("There need to one active DataManager script on the scene.");
                        return null;
                    }
                }
                return dataManager;
            }
        }
        #endregion

        public List<DataScene> scenesData = new List<DataScene>();
        public DataScene currentSceneData;

        void Awake()
        {
            //DontDestroyOnLoad(gameObject);
        }

        void OnEnable()
        {
            TransitionEvents.OnLocationName += ChangeCurrentSceneData;
        }
        
        void Ondisable()
        {
            TransitionEvents.OnLocationName += ChangeCurrentSceneData;
        }

        /// <summary>
        /// Function executed after OnLocation event, for changing the current sceneData object
        /// </summary>
        /// <param name="locationName">The name of the new location</param>
        private void ChangeCurrentSceneData(string locationName)
        {
            currentSceneData = GetSceneDataByname(locationName);
            if(currentSceneData == null)
            {
                currentSceneData = new DataScene();
                currentSceneData.locationName = locationName;
                scenesData.Add(currentSceneData);
            }
            currentSceneData.visited += 1;
        }

        /// <summary>
        /// Find a DataScene with using a location name.
        /// </summary>
        /// <param name="locationName">The name of the location to be searched</param>
        /// <returns>Requested DataScene object</returns>
        public DataScene GetSceneDataByname(string locationName)
        {
            DataScene dataScene = null;
            for (int i = 0; i < scenesData.Count; i++)
            {
                if(scenesData[i].locationName == locationName)
                {
                    dataScene = scenesData[i];
                    break;
                }
            }
            return dataScene;
        }
    }
}