CapersProject/Assets/02.Scripts/Tycoon/CustomerTableController.cs

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

namespace BlueWater.Tycoons
{
    public class CustomerTableController : MonoBehaviour
    {
        [SerializeField]
        private List<CustomerTable> _customerTables;

        private Random _random = new();
        
        public void RegisterTable(CustomerTable table)
        {
            Utils.RegisterList(_customerTables, table);
        }

        public void UnregisterTable(CustomerTable table)
        {
            Utils.UnregisterList(_customerTables, table);
        }
        
        public TableSeat FindEmptySeat()
        {
            var tableCount = _customerTables.Count;
            var indices = new List<int>(Enumerable.Range(0, tableCount));

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

                var emptySeat = _customerTables[tableIndex].FindEmptySeat();
                if (emptySeat != null)
                {
                    return emptySeat;
                }
            }
            return null;
        }
    }
}