using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Authorization;
using Microsoft.Extensions.Configuration;
using MP.AppAuth.Models;
using MP.AppAuth.Services;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace MP.Land.Shared
{
    public partial class NavMenu
    {
        #region Public Properties

        [Parameter]
        public EventCallback<bool> EC_compressUpdated { get; set; }

        #endregion Public Properties

        #region Protected Properties

        [Inject]
        protected AuthenticationStateProvider AuthStateProvider { get; set; } = null!;

        [Inject]
        protected AppAuthService DataService { get; set; }

        protected string hideText { get => showText ? "" : "invisible"; }

        protected bool IsSuperAdmin
        {
            get => HasRight(AppAuthService.RoleSuperAdmin);
        }

        [Inject]
        protected NavigationManager NavManager { get; set; } = null!;

        protected string pageName
        {
            get
            {
                string pName = NavManager.ToBaseRelativePath(NavManager.Uri).ToLower();
                if (pName.Contains("?"))
                {
                    pName = pName.Substring(0, pName.IndexOf("?"));
                }
                return pName;
            }
        }

        protected bool showText { get; set; } = true;

        protected List<PermessiModel> UserPerm { get; set; } = new List<PermessiModel>();

        protected List<UserDirittiModel> UserRight { get; set; } = new List<UserDirittiModel>();

        #endregion Protected Properties

        #region Protected Methods

        protected bool HasRight(string codFunz)
        {
            bool answ = false;
            if (UserRight != null && UserRight.Count > 0)
            {
                answ = UserRight
                        .Where(x => x.Funzione.Equals(codFunz, System.StringComparison.InvariantCultureIgnoreCase))
                        .Count() > 0;
            }
            return answ;
        }

        protected override async Task OnInitializedAsync()
        {
            await ReloadData();
        }

        protected void ToggleCompress()
        {
            showText = !showText;
            EC_compressUpdated.InvokeAsync(showText);
        }

        #endregion Protected Methods

        #region Private Fields

        private bool collapseNavMenu = true;

        private bool onlyIcon = false;
        private string SafePages = "";
        private string userName = "";

        #endregion Private Fields

        #region Private Properties

        [Inject]
        private IConfiguration ConfMan { get; set; } = null!;

        private bool isLoading { get; set; } = false;
        private string NavMenuCssClass => collapseNavMenu ? "collapse" : null;

        private string? TextCss => onlyIcon ? "d-none" : "";

        #endregion Private Properties

        #region Private Methods

        private void checkAuth()
        {
            // verifico pagina tra i permessi, se manca --> rimando a pagina unauth... se contiene
            // index --> salto
            if (!pageName.Contains("index"))
            {
                bool isAuth = false;
                if (UserPerm != null)
                {
                    isAuth = UserPerm.Where(x => x.Url.ToLower() == pageName).Count() > 0;
                    bool pageIsSafe = SafePages.ToLower().Contains($"|{pageName.ToLower()}|");
                    if (!pageIsSafe && !isAuth)
                    {
                        NavManager.NavigateTo("Unauthorized", true);
                    }
                }
            }
        }

        private async Task ReloadData()
        {
            isLoading = true;
            // sistemo elenco pagine safe...
            SafePages = ConfMan.GetValue<string>("Application:SafePages").ToLower();
            var authState = await AuthStateProvider.GetAuthenticationStateAsync();
            var user = authState.User;
            if (user.Identity != null && user.Identity.IsAuthenticated)
            {
                userName = $"{user.Identity.Name}";
            }
            else
            {
                userName = "N.A.";
            }
            // carico diritti...
            var domUser = userName.Split("\\");
            if (domUser.Length > 0)
            {
                string dominio = domUser[0];
                string uName = domUser[1];
                UserRight = await DataService.DirittiGetByUser(uName);
                UserPerm = await DataService.PermessiGetByUser(uName);
            }
            checkAuth();
            await Task.Delay(1);
            isLoading = false;
            await Task.Delay(1);
        }

        private void ToggleNavMenu()
        {
            collapseNavMenu = !collapseNavMenu;
        }

        #endregion Private Methods
    }
}