limanapp/LiMan.UI/Components/CmpTop.razor.cs

using LiMan.DB.DBModels;
using LiMan.UI.Data;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Authorization;
using Org.BouncyCastle.Bcpg;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace LiMan.UI.Components
{
    // Vedere anche:
    // https://docs.microsoft.com/en-us/aspnet/core/blazor/security/?view=aspnetcore-5.0#:~:text=Blazor%20uses%20the%20existing%20ASP.NET%20Core%20authentication%20mechanisms,all%20client-side%20code%20can%20be%20modified%20by%20users https://docs.microsoft.com/en-us/aspnet/core/blazor/security/?view=aspnetcore-5.0
    public partial class CmpTop
    {
        #region Public Methods

        public void Dispose()
        {
            MServ.EA_PageUpdated -= OnPageUpdate;
        }

        public void OnPageUpdate()
        {
            PageName = MServ.PageName;
            PageIcon = MServ.PageIcon;
            InvokeAsync(() =>
            {
                StateHasChanged();
            });
        }

        #endregion Public Methods

        #region Protected Properties

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

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

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

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

        #endregion Protected Properties

        #region Protected Methods

        protected override void OnInitialized()
        {
            MServ.EA_PageUpdated += OnPageUpdate;
        }

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

        #endregion Protected Methods

        #region Private Properties

        [CascadingParameter]
        private Task<AuthenticationState> AuthenticationStateTask { get; set; }

        private string PageIcon { get; set; } = "";

        private string PageName { get; set; } = "";

        [CascadingParameter(Name = "ShowSearch")]
        private bool ShowSearch { get; set; }

        private string userName
        {
            get => MServ.UserName;
            set => MServ.UserName = value;
        }

        #endregion Private Properties

        #region Private Methods

        private async Task checkAuthUser()
        {
            // verifico user su DB
            var listUser = await DataService.AuthUserGetFilt(userName);
            // se nullo --> creo!
            if (listUser == null || listUser.Count == 0)
            {
                string adDomain = "Domain";
                string adUser = "User";
                if (userName.Contains("\\"))
                {
                    var adInfo = userName.Split("\\");
                    adDomain = adInfo[0];
                    adUser = adInfo[1];
                }
                // creo record
                AuthUserModel newRec = new AuthUserModel()
                {
                    AD_Domain = adDomain,
                    AD_User = adUser,
                    Username = userName
                };
                // faccio upsert!
                bool userOk = await DataService.AuthUserUpsert(newRec);
                if (userOk)
                {
                    // rileggo!
                    listUser = await DataService.AuthUserGetFilt(userName);
                }
            }
            // recupero UserID...
            userId = (listUser == null || listUser.Count == 0) ? 0 : listUser.FirstOrDefault().UserID;

            // carico Claims utente da DB per averli in cache redis...
            listClaims = await DataService.AuthClaimByUserName(userName);
            // se fosse nulla --> aggiungo USER base!
            if (listClaims == null || listClaims.Count == 0 && userId > 0)
            {
                // recupero user...
                AuthClaimModel newClaim = new AuthClaimModel()
                {
                    ClaimID = 0,
                    DtIns = DateTime.Now,
                    DtMod = DateTime.Now,
                    RoleID = 1,
                    UserID = userId
                };
                bool claimOk = await DataService.AuthClaimUpsert(newClaim);
                if (claimOk)
                {
                    listClaims = await DataService.AuthClaimByUserName(userName);
                }
            }
        }

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

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

            if (user.Identity.IsAuthenticated)
            {
                userName = $"{user.Identity.Name}";
                await checkAuthUser();
            }
            else
            {
                userName = "N.A.";
            }
        }

        #endregion Private Methods
    }
}