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

namespace BlueWater.Tycoons
{
    public class CustomerTable : MonoBehaviour
    {
        [SerializeField]
        private List<TableSeat> _tableSeats;
        
        private TableSeat _tableSeat;
        private Random _random = new();
        private TycoonManager _tycoonManager;

        private void OnEnable()
        {
            _tycoonManager = TycoonManager.Instance;
            _tycoonManager.CustomerTableController.RegisterTable(this);
        }

        private void OnDisable()
        {
            _tycoonManager.CustomerTableController.UnregisterTable(this);
        }

        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;
        }
    }
}