using PashaBibko.Pacore.Attributes;
using UnityEngine.SceneManagement;
using System.Collections;
using System.Diagnostics;
using UnityEngine;
using System;

using Debug = UnityEngine.Debug;

namespace Fruitomation.Game
{
    [CreateInstanceOnStart] public class SceneController : MonoBehaviour
    {
        private static SceneController Instance;

        private void Awake()
        {
            if (Instance is not null)
            {
                Debug.LogError($"Multiple instances of [{nameof(SceneController)}] cannot exist.");
                return;
            }

            Instance = this;
        }

        private IEnumerator StartLoadInternal(string scene)
        {
            Stopwatch sw = Stopwatch.StartNew();
            AsyncOperation operation = SceneManager.LoadSceneAsync(scene);
            if (operation == null)
            {
                string error = $"Unknown scene [{scene}]";
                throw new ArgumentException(error);
            }

            operation.allowSceneActivation = false;
            operation.completed += _ =>
            {
                sw.Stop();
                Debug.Log($"Scene finished loading [Took {sw.ElapsedMilliseconds}ms]");
            };

            yield return new WaitForSeconds(5f);
            operation.allowSceneActivation = true;
        }

        public static void StartLoadOf(string scene) => Instance.StartCoroutine(Instance.StartLoadInternal(scene));
    }
}