using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using Random = System.Random;

namespace BlueWater.Tycoons
{
    public class CustomerTable : InteractionFurniture
    {
        [SerializeField]
        private List<TableSeat> _tableSeats;
        
        private TycoonManager _tycoonManager;
        private TableSeat _tableSeat;
        private Random _random = new();
        private bool _isCleaning;
        
        protected override void OnEnable()
        {
            base.OnEnable();

            _tycoonManager = TycoonManager.Instance;
            _tycoonManager.CustomerTableController.RegisterTable(this);
        }

        protected override void OnDisable()
        {
            base.OnDisable();
                
            _tycoonManager.CustomerTableController.UnregisterTable(this);
        }

        public override void Interaction()
        {
            StartCoroutine(CleanUpTable(_tableSeat));
        }

        public override bool CanInteraction()
        {
            if (_isCleaning) return false;

            _tableSeat = _tableSeats.Find(table => !table.IsOccupied && !table.IsCleaned);
            if (_tableSeat == null) return false;

            return true;
        }

        public TableSeat FindEmptySeat()
        {
            var seatCount = _tableSeats.Count;
            var indices = new List<int>(Enumerable.Range(0, seatCount));

            while (indices.Count > 0)
            {
                var randomIndex = _random.Next(indices.Count);
                var seatIndex = indices[randomIndex];
                indices.RemoveAt(randomIndex);

                var tableSeat = _tableSeats[seatIndex];
                if (!tableSeat.IsReserved && !tableSeat.IsOccupied && tableSeat.IsCleaned)
                {
                    return tableSeat;
                }
            }
            return null;
        }
        
        private IEnumerator CleanUpTable(TableSeat tableSeat)
        {
            // TODO : n초간 테이블 청소 애니메이션 (청소 중에 키 작동 금지)
            _isCleaning = true;
            PlayerInputKeyManager.Instance.DisableCurrentPlayerInput();

            var elapsedTime = 0f;
            while (elapsedTime <= 2f)
            {
                elapsedTime += Time.deltaTime;
                yield return null;
            }
            
            tableSeat.CleanUpFood();
            PlayerInputKeyManager.Instance.EnableCurrentPlayerInput();
            _isCleaning = false;
        }
    }
}