using LiMan.UI.Data;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Identity;
using Microsoft.Extensions.Configuration;
using System.Collections.Generic;
using System.Linq;
using System.Security.Claims;
using System.Threading.Tasks;
using System;
using LiMan.DB.DBModels;
using Microsoft.JSInterop;
using StackExchange.Redis;
using Microsoft.AspNetCore.Components.Authorization;
using System.Data;
using NLog.LayoutRenderers;
using NLog.Filters;

namespace LiMan.UI.Components
{
    public partial class UserMan : IDisposable
    {
        #region Public Methods

        public void Dispose()
        {
            AppMService.EA_SearchUpdated -= AppMService_EA_SearchUpdated;
        }

        public string ShowRoles(List<AuthClaimModel> ClaimList)
        {
            string answ = "";
            foreach (var item in ClaimList)
            {
                answ += $"{item.RoleNav.Ruolo}, ";
            }
            if (answ.Length > 2)
            {
                answ = answ.Substring(0, answ.Length - 2);
            }
            return answ;
        }

        #endregion Public Methods

        #region Protected Properties

        [Inject]
        protected MessageService AppMService { get; set; } = null!;

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

        [Inject]
        protected LiManDataService DataService { get; set; } = null!;

        [Inject]
        protected IJSRuntime JSRuntime { get; set; } = null!;

        protected int totalCount { get; set; } = 0;

        protected List<AuthClaimModel> UserClaims { get; set; } = new List<AuthClaimModel>();

        #endregion Protected Properties

        #region Protected Methods

        /// <summary>
        /// Recupera elenco utenti
        /// </summary>
        protected async Task GetUsers()
        {
            // clear any error messages
            strError = "";

            UsersAll = await DataService.AuthUserAll();

            // filtro visualizzazione x tipo SE richeisto
            if (FiltUserRole > 0)
            {
                UsersAll = UsersAll.Where(x => x.Claims.Any(c => c.RoleID == FiltUserRole)).ToList();
            }
            // se c'č search,,,
            if (!string.IsNullOrEmpty(currSearch))
            {
                UsersAll = UsersAll
                        .Where(x => x.Cognome.Contains(currSearch, StringComparison.CurrentCultureIgnoreCase)
                        || x.Nome.Contains(currSearch, StringComparison.CurrentCultureIgnoreCase)
                        || x.Username.Contains(currSearch, StringComparison.CurrentCultureIgnoreCase))
                        .ToList();
            }

            totalCount = UsersAll.Count;

            UsersList = UsersAll
                        .Skip(numRecord * (currPage - 1)).Take(numRecord)
                        .ToList();
        }

        protected override async Task OnInitializedAsync()
        {
            currSearch = "";
            string rawConf = Configuration["RuntimeOpt:MultiRoleEnab"];
            if (rawConf != null)
            {
                bool.TryParse(rawConf, out MultiRoleEnab);
            }
            AppMService.EA_SearchUpdated += AppMService_EA_SearchUpdated;
            // lettura dati
            await GetUsers();
            await refreshLists();
            await GetUserClaims();
        }

        protected async Task SetNumRec(int newNum)
        {
            currPage = 1;
            numRecord = newNum;
            currPage = 1;
            await InvokeAsync(ReloadData);
        }

        protected async Task SetPage(int newNum)
        {
            currPage = newNum;
            EditUser(null);
            await InvokeAsync(ReloadData);
        }

        protected bool UserHasClaim(string ruolo)
        {
            bool answ = false;
            if (UserClaims != null && UserClaims.Count > 0)
            {
                answ = UserClaims.Where(x => x.RoleNav.Ruolo == ruolo).Any();
            }
            return answ;
        }

        #endregion Protected Methods

        #region Private Fields

        private const string ADMIN_ROLE = "Admin";

        private const string UNDEF_ROLE = "Undef";

        private string currSearch = "";

        /// <summary>
        /// User corrente
        /// </summary>
        private AuthUserModel? currUser = null;

        /// <summary>
        /// Abilitazione gestione ROLES multipli
        /// </summary>
        private bool MultiRoleEnab = true;

        private string qrCodeVal = "";

        /// <summary>
        /// Elenco ROLES da mostrare in dropdown durante editing (usare DB?)
        /// </summary>
        private List<AuthRoleModel> RolesList = new List<AuthRoleModel>();

        // To enable showing the Popup
        private bool ShowPopup = false;

        // To hold any possible errors
        private string strError = "";

        private string userName = "";

        /// <summary>
        /// Collezione utenti (totale)
        /// </summary>
        private List<AuthUserModel> UsersAll = new List<AuthUserModel>();

        /// <summary>
        /// Collezione utenti
        /// </summary>
        private List<AuthUserModel> UsersList = new List<AuthUserModel>();

        #endregion Private Fields

        #region Private Properties

        private int _filtUserRole { get; set; } = 0;

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

        /// <summary>
        /// Ruolo di default (User!!!)
        /// </summary>
        private string CurrentUserRole { get; set; } = "User";

        private int currPage { get; set; } = 1;

        /// <summary>
        /// Ruoli correnti utente
        /// </summary>
        private string[] CurrUserRoles { get; set; } = new string[] { "User" };

        /// <summary>
        /// Gestione filtraggio dati
        /// </summary>
        private int FiltUserRole
        {
            get
            {
                return _filtUserRole;
            }
            set
            {
                if (_filtUserRole != value)
                {
                    _filtUserRole = value;
                    var pUpd = Task.Run(async () => await ReloadData());
                    pUpd.Wait();
                }
            }
        }

        private bool isLoading { get; set; } = false;

        private int NewRoleId { get; set; } = 0;

        private int numRecord { get; set; } = 10;

        private List<AuthRoleModel> Roles2Add
        {
            get
            {
                List<AuthRoleModel> currRoles = new List<AuthRoleModel>();
                foreach (var item in RolesList)
                {
                    // solo se l'utente corrente lo possiede...
                    if (UserClaims.Where(x => x.RoleID == item.RoleID).Any())
                    {
                        // verifico no ci sia giā...
                        if (!currUser.Claims.Where(x => x.RoleID == item.RoleID).Any())
                        {
                            currRoles.Add(item);
                        }
                    }
                }
                return currRoles;
            }
        }

        #endregion Private Properties

        #region Private Methods

        private async Task AddSelRole()
        {
            if (NewRoleId > 0)
            {
                int userId = currUser.UserID;
                // creo nuovo ruolo...
                AuthClaimModel newClaim = new AuthClaimModel()
                {
                    ClaimID = 0,
                    UserID = currUser.UserID,
                    RoleID = NewRoleId,
                    DtIns = DateTime.Now,
                    DtMod = DateTime.Now
                };
                await DataService.AuthClaimUpsert(newClaim);
                // Refresh Users
                await ReloadData();
                currUser = UsersAll.Find(x => x.UserID == userId);
            }
        }

        private async void AppMService_EA_SearchUpdated()
        {
            currSearch = AppMService.SearchVal;
            await ReloadData();
        }

        private async Task ClosePopup()
        {
            // Close the Popup
            ShowPopup = false;
            // Refresh Users
            await GetUsers();
        }

        private async Task DeleteRole(AuthClaimModel currClaim)
        {
            if (!await JSRuntime.InvokeAsync<bool>("confirm", "Sicuro di voler eliminare il Ruolo utente selezionato?"))
                return;

            int userId = currUser.UserID;
            await DataService.AuthClaimRemove(currClaim);
            // Refresh Users
            await ReloadData();
            currUser = UsersAll.Find(x => x.UserID == userId);
        }

        private async Task DeleteUser(AuthUserModel _currRec)
        {
            if (!await JSRuntime.InvokeAsync<bool>("confirm", "Sicuro di voler eliminare i Ruoli per l'utente selezionato? Il record rimarrā ma inattivo."))
                return;

            await DataService.AuthRoleResetUser(_currRec.UserID);

            // Close the Popup
            ShowPopup = false;
            // Refresh Users
            await ReloadData();
        }

        private void EditUser(AuthUserModel _currRec)
        {
            // Open the Popup
            currUser = _currRec;
            NewRoleId = 0;
            ShowPopup = true;
        }

        private async Task GetUserClaims()
        {
            var authState = await AutheStateProvider.GetAuthenticationStateAsync();
            var user = authState.User;

            if (user.Identity.IsAuthenticated)
            {
                userName = $"{user.Identity.Name}";
            }
            UserClaims = await DataService.AuthClaimByUserName(userName);
        }

        private async Task refreshLists()
        {
            RolesList = await DataService.AuthRolesGetAll();
        }

        private async Task ReloadData()
        {
            isLoading = true;
            await GetUsers();
            isLoading = false;
        }

        private async Task SaveUser()
        {
            try
            {
                // chiamo update!
                await DataService.AuthUserUpsert(currUser);
                ShowPopup = false;
                // Refresh Users
                await GetUsers();
            }
            catch (Exception ex)
            {
                strError = ex.GetBaseException().Message;
            }
        }

        #endregion Private Methods
    }
}