using System.Diagnostics.CodeAnalysis;
using UnityEngine;

namespace Borodar.FarlandSkies.Core.Helpers
{
    public class Singleton<T> : MonoBehaviour where T : Component
    {
        private static T _instance;

        [SuppressMessage("ReSharper", "InvertIf")]
        public static T Instance
        {
            get
            {
                if (_instance == null)
                {
                    var instances = FindObjectsByType<T>(FindObjectsSortMode.None);

                    if (instances.Length == 1)
                    {
                        _instance = instances[0];
                    }
                    else if (instances.Length > 1)
                    {
                        Debug.LogError(typeof(T) + ": There is more than 1 instance in the scene.");
                    }
                    else
                    {
                        Debug.LogError(typeof(T) + ": Instance doesn't exist in the scene.");
                    }
                }

                return _instance;
            }
        }
    
    }
}