using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace TIAMWebApp.Shared.Application.Utility
{
    public class PageHistoryState
    {
        private readonly List<string> _previousPages = [];

        public PageHistoryState()
        { }

        public void AddPageToHistory(string pageUrl)
        {
            if (_previousPages.Count > 0 && _previousPages[^1] == pageUrl) return;

            _previousPages.Add(pageUrl);
        }

        public string GetGoBackPage()
        {
            if (_previousPages.Count == 0) return string.Empty;

            _previousPages.RemoveAt(_previousPages.Count - 1);

            return _previousPages.Count > 0 ? _previousPages[^1] : string.Empty;
        }

        public bool CanGoBack()
        {
            return _previousPages.Count > 1;
        }
    }
}