@page "/registration"

@inject IClientAuthenticationService AuthenticationService
@inject NavigationManager NavigationManager


<EditForm Model="UserForRegistration" OnValidSubmit="RegisterUser" class="pt-4">
    <DataAnnotationsValidator />
    <div class="py-4">
        <div class=" row form-group ">
            <div class="col-6 offset-3 ">
                <div class="card border">
                    <div class="card-body px-lg-5 pt-4">
                        <h3 class="col-12 text-success text-center py-2">
                            <strong>Sign Up</strong>
                        </h3>
                        @if (ShowRegistrationErrors)
                        {
                            <div>
                                @foreach (var error in Errors)
                                {
                                    <p class="text-danger text-center">@error</p>
                                }
                            </div>
                        }
                        <hr style="background-color:aliceblue" />
                        <div class="py-2">
                            <InputText @bind-Value="UserForRegistration.Name" class="form-control" placeholder="Name..." />
                            <ValidationMessage For="(()=>UserForRegistration.Name)" />
                        </div>
                        <div class="py-2">
                            <InputText @bind-Value="UserForRegistration.Email" class="form-control" placeholder="Email..." />
                            <ValidationMessage For="(()=>UserForRegistration.Email)" />
                        </div>
                        <div class="py-2 input-group">
                            <div class="input-group-prepend">
                                <span class="input-group-text"> +1</span>
                            </div>
                            <InputText @bind-Value="UserForRegistration.PhoneNo" class="form-control" placeholder="Phone number..." />
                            <ValidationMessage For="(()=>UserForRegistration.PhoneNo)" />
                        </div>
                        <div class="form-row py-2">
                            <div class="col">
                                <InputText @bind-Value="UserForRegistration.Password" type="password" id="password" placeholder="Password..." class="form-control" />
                                <ValidationMessage For="(()=>UserForRegistration.Password)" />
                            </div>
                            <div class="col">
                                <InputText @bind-Value="UserForRegistration.ConfirmPassword" type="password" id="confirm" class="form-control" placeholder="Confirm Password..." />
                                <ValidationMessage For="(()=>UserForRegistration.ConfirmPassword)" />
                            </div>
                        </div>
                        <hr style="background-color:aliceblue" />
                        <div class="py-2">
                            @if (IsProcessing)
                            {
                                <button type="submit" class="btn btn-success btn-block disabled"><i class="fas fa-sign-in-alt"></i> Please Wait...</button>
                            }
                            else
                            {
                                <button type="submit" class="btn btn-success btn-block"><i class="fas fa-sign-in-alt"></i> Register</button>
                            }
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</EditForm>

@code{
    UserRequestDTO UserForRegistration = new UserRequestDTO();
    bool IsProcessing;
    bool ShowRegistrationErrors;
    IEnumerable<string> Errors;

    private async Task RegisterUser()
    {
        ShowRegistrationErrors = false;
        IsProcessing = true;
        var result = await AuthenticationService.RegisterUserAsync(UserForRegistration);
        if (result.IsRegistrationSuccessful)
        {
            IsProcessing = false;
            NavigationManager.NavigateTo("/login");
        }
        else
        {
            IsProcessing = false;
            Errors = result.Errors;
            ShowRegistrationErrors = true;
        }
    }
}

@page "/login"

@inject IClientAuthenticationService AuthenticationService
@inject NavigationManager NavigationManager

<div id="logreg-forms">
    <h1 class="h3 mb-3 pt-3 font-weight-normal text-primary" style="text-align:center;">Sign In</h1>
    <EditForm Model="UserForAuthentication" OnValidSubmit="LoginUser">
        <DataAnnotationsValidator />
        @if (ShowAuthenticationErrors)
        {
            <p class="text-center text-danger">@Errors</p>
        }
        <InputText @bind-Value="UserForAuthentication.UserName" id="email" placeholder="Email..." class="form-control mb-2" />
        <ValidationMessage For="(()=>UserForAuthentication.UserName)"></ValidationMessage>
        <InputText @bind-Value="UserForAuthentication.Password" type="password" placeholder="Password..." id="password" class="form-control mb-2" />
        <ValidationMessage For="(()=>UserForAuthentication.Password)"></ValidationMessage>
        @if (IsProcessing)
        {
            <button type="submit" class="btn btn-success btn-block disabled"><i class="fas fa-sign-in-alt"></i> Please Wait...</button>
        }
        else
        {
            <button type="submit" class="btn btn-success btn-block"><i class="fas fa-sign-in-alt"></i> Sign in</button>
        }
        <a href="/registration" class="btn btn-primary text-white mt-3"><i class="fas fa-user-plus"></i> Register as a new user</a>
    </EditForm>
</div>
@code
{
    AuthenticationDTO UserForAuthentication = new AuthenticationDTO();
    bool IsProcessing = false;
    bool ShowAuthenticationErrors;
    string Errors;
    string ReturnUrl;

    private async Task LoginUser()
    {
        ShowAuthenticationErrors = false;
        IsProcessing = true;
        var result = await AuthenticationService.LoginAsync(UserForAuthentication);
        if (result.IsAuthSuccessful)
        {
            IsProcessing = false;
            var absoluteUri = new Uri(NavigationManager.Uri);
            var queryParam = HttpUtility.ParseQueryString(absoluteUri.Query);
            ReturnUrl = queryParam["returnUrl"];
            if (string.IsNullOrEmpty(ReturnUrl))
            {
                NavigationManager.NavigateTo("/");
            }
            else
            {
                NavigationManager.NavigateTo("/" + ReturnUrl);
            }
        }
        else
        {
            IsProcessing = false;
            Errors = result.ErrorMessage;
            ShowAuthenticationErrors = true;
        }
    }
}

<AuthorizeView>
    <Authorized>
        <li class="nav-item p-0">
          <NavLink class="nav-link" href="#">
             <span class="p-2">
                Hello, @context.User.Identity.Name!
             </span>
          </NavLink>
        </li>
        <li class="nav-item p-0">
          <NavLink class="nav-link" href="logout">
             <span class="p-2">
                Logout
             </span>
          </NavLink>
        </li>
    </Authorized>
    <NotAuthorized>
        <li class="nav-item p-0">
          <NavLink class="nav-link" href="registration">
            <span class="p-2">
               Register
            </span>
          </NavLink>
        </li>
        <li class="nav-item p-0">
          <NavLink class="nav-link" href="login">
            <span class="p-2">
              Login
            </span>
          </NavLink>
        </li>
    </NotAuthorized>
</AuthorizeView>

@page "/logout"

@inject IClientAuthenticationService AuthenticationService
@inject NavigationManager NavigationManager

@code
{
    protected async override Task OnInitializedAsync()
    {
        await AuthenticationService.LogoutAsync();
        NavigationManager.NavigateTo("/");
    }
}

namespace BlazorWasm.Client.Services
{
    public class AuthStateProvider : AuthenticationStateProvider
    {
        // ...

        public void NotifyUserLoggedIn(string token)
        {
            var authenticatedUser = new ClaimsPrincipal(
                                        new ClaimsIdentity(JwtParser.ParseClaimsFromJwt(token), "jwtAuthType")
                                    );
            var authState = Task.FromResult(new AuthenticationState(authenticatedUser));
            base.NotifyAuthenticationStateChanged(authState);
        }

        public void NotifyUserLogout()
        {
            var authState = Task.FromResult(new AuthenticationState(new ClaimsPrincipal(new ClaimsIdentity())));
            base.NotifyAuthenticationStateChanged(authState);
        }
    }
}

namespace BlazorWasm.Client.Services
{
    public class ClientAuthenticationService : IClientAuthenticationService
    {
        private readonly HttpClient _client;
        private readonly ILocalStorageService _localStorage;
        private readonly AuthenticationStateProvider _authStateProvider;

        public ClientAuthenticationService(
            HttpClient client,
            ILocalStorageService localStorage,
            AuthenticationStateProvider authStateProvider)
        {
            _client = client;
            _localStorage = localStorage;
            _authStateProvider = authStateProvider;
        }

        public async Task<AuthenticationResponseDTO> LoginAsync(AuthenticationDTO userFromAuthentication)
        {
            // ...
            if (response.IsSuccessStatusCode)
            {
                //...
                ((AuthStateProvider)_authStateProvider).NotifyUserLoggedIn(result.Token);

                return new AuthenticationResponseDTO { IsAuthSuccessful = true };
            }
            //...
        }

        public async Task LogoutAsync()
        {
            //...
            ((AuthStateProvider)_authStateProvider).NotifyUserLogout();
        }
    }
}

@attribute [Authorize(Roles = ‍ConstantRoles.Customer)]

@using Microsoft.AspNetCore.Authorization

@page "/hotel-room-details/{Id:int}"

// ...

@code {
     // ...

    protected override async Task OnInitializedAsync()
    {
        try
        {
            HotelBooking.OrderDetails = new RoomOrderDetailsDTO();
            if (Id != null)
            {
                // ...

                if (await LocalStorage.GetItemAsync<UserDTO>(ConstantKeys.LocalUserDetails) != null)
                {
                    var userInfo = await LocalStorage.GetItemAsync<UserDTO>(ConstantKeys.LocalUserDetails);
                    HotelBooking.OrderDetails.UserId = userInfo.Id;
                    HotelBooking.OrderDetails.Name = userInfo.Name;
                    HotelBooking.OrderDetails.Email = userInfo.Email;
                    HotelBooking.OrderDetails.Phone = userInfo.PhoneNo;
                }
            }
        }
        catch (Exception e)
        {
            await JsRuntime.ToastrError(e.Message);
        }
    }

public async Task<RoomOrderDetailsDTO> SaveRoomOrderDetailsAsync(RoomOrderDetailsDTO details)
{
   // details.UserId = "unknown user!";

<head>
    <title>@ViewBag.Title</title>
    <link href="@Url.Content("~/Content/TagIt/jquery-ui-1.8.23.custom.css")" rel="stylesheet" type="text/css" />
    <link href="@Url.Content("~/Content/TagIt/tagit-simple-blue.css")" rel="stylesheet" type="text/css" />
    <link href="@Url.Content("Content/Site.css")" rel="stylesheet" type="text/css" />
    <script src="@Url.Content("~/Scripts/jquery-1.9.1.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/jquery.unobtrusive-ajax.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Content/TagIt/jquery-ui-1.8.23.custom.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Content/TagIt/tagit.js")" type="text/javascript"></script>
    @RenderSection("JavaScript", required: false)
</head>

using System.ComponentModel;
using System.ComponentModel.DataAnnotations;

namespace jQueryMvcSample04.Models
{
    public class BlogPostViewModel
    {
        [DisplayName("عنوان"), Required(ErrorMessage = "*")]
        public string Title { set; get; }

        [DisplayName("متن"), Required(ErrorMessage = "*")]
        public string Body { set; get; }

        /// <summary>
        /// آرایه‌ای محدود از برچسب‌های این مطلب خاص به صورت جی‌سون که پیشتر ثبت شده است
        /// هدف استفاده در حین ویرایش مطلب
        /// </summary>
        public string InitialTags { set; get; }

        /// <summary>
        /// آرایه‌ای جی‌سونی از تمام برچسب‌های موجود در سیستم
        /// هدف نمایش منوی انتخاب برچسب‌ها از لیست
        /// </summary>
        public string TagsSource { set; get; }

        /// <summary>
        /// آرایه‌ای از برچسب‌های وارد شده توسط کاربر در حین ثبت مطلب
        /// </summary>
        [DisplayName("برچسب‌ها"), Required(ErrorMessage = "*")]
        public string[] Tags { set; get; }

        public int? Id { set; get; }
    }
}

using System.Web.Mvc;
using jQueryMvcSample04.Extensions;
using jQueryMvcSample04.Models;

namespace jQueryMvcSample04.Controllers
{
    public class HomeController : Controller
    {
        [HttpGet]
        public ActionResult Index(int? id)
        {
            //در ابتدای کار تمام تگ‌های موجود در سیستم از بانک اطلاعاتی دریافت خواهند شد
            //از این تگ‌ها برای تشکیل منوی انتخاب برچسب‌ها استفاده می‌شود
            var tagsSource = new[] { "C#", "C++", "C", "ASP.NET", "MVC" }.ToJson();

            //همچنین صرفا برچسب‌های مطلب جاری که پیشتر ثبت شده‌اند نیز باید از بانک اطلاعاتی دریافت گردند
            //از این برچسب‌ها برای ویرایش یک مطلب موجود استفاده خواهد شد
            var init = new[] { "ASP.NET" }.ToJson();

            var model = new BlogPostViewModel
            {
                TagsSource = tagsSource,
                InitialTags = init,
                Id = id
            };
            return View(model);
        }

        [HttpPost]
        public ActionResult Index(BlogPostViewModel data)
        {
            if (this.ModelState.IsValid)
            {
                //todo: save data
                // ...
                return RedirectToAction(actionName: "index", controllerName: "home");
            }

            //در صورت بروز خطا مجددا اطلاعات موجود نمایش داده خواهند شد
            data.TagsSource = new[] { "C#", "C++", "C", "ASP.NET", "MVC" }.ToJson();
            data.InitialTags = data.Tags.ToJson();
            return View(data);
        }
    }
}

using System.Linq;
using System.Web.Script.Serialization;

namespace jQueryMvcSample04.Extensions
{
    public static class JsonExt
    {
        public static string ToJson(this string[] initialTags)
        {            
            if (initialTags == null || !initialTags.Any())
                return "[]";
            else
                return new JavaScriptSerializer().Serialize(initialTags);
        }
    }
}

@model jQueryMvcSample04.Models.BlogPostViewModel
@{
    ViewBag.Title = "Index";
}
@using (Html.BeginForm())
{
    @Html.ValidationSummary(true)

    <fieldset>
        <legend>ثبت مطلب جدید</legend>
        @Html.HiddenFor(model => model.Id)
        <div class="editor-label">
            @Html.LabelFor(model => model.Title)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Title)
            @Html.ValidationMessageFor(model => model.Title)
        </div>
        <div class="editor-label">
            @Html.LabelFor(model => model.Body)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Body)
            @Html.ValidationMessageFor(model => model.Body)
        </div>
        <div class="editor-label">
            @Html.LabelFor(model => model.Tags)
        </div>
        <div class="editor-field">
            <ul id="tagsList" dir="ltr" name="Tags">
            </ul>
            @Html.ValidationMessageFor(model => model.Tags)
        </div>
        <p>
            <input type="submit" value="Create" />
        </p>
    </fieldset>
}
@section JavaScript
{
    <script type="text/javascript">
    $(document).ready(function () {
            var tagsSource = @Html.Raw(Model.TagsSource);
            $('#tagsList').tagit({
                 tagSource: tagsSource, 
                 select: true, 
                 triggerKeys: ['enter', 'comma', 'tab'],
                 initialTags:  @Html.Raw(Model.InitialTags) 
              });
});
    </script>
}

public void ConfigureServices(IServiceCollection services) 
{ 
    // Add service and create Policy with options 
    services.AddCors(options => 
    { 
        options.AddPolicy("CorsPolicy", 
            builder => builder.AllowAnyOrigin() 
            .AllowAnyMethod() 
            .AllowAnyHeader() 
            .AllowCredentials() ); 
    }); 
     
    // Make sure MVC is added AFTER CORS 
    services.AddMvc(); 
}

services.AddCors(options =>
{
    options.AddPolicy("AllowOrigin",
            builder => builder.WithOrigins("http://localhost:55294")
                              .WithMethods("GET", "POST", "HEAD"));
});

public void Configure(IApplicationBuilder app) 
{ 
    // ... 
 
    app.UseCors("CorsPolicy"); 
     
    // ... 
     
    app.UseMvc(routes => 
    { 
        routes.MapRoute( 
            name: "default", 
            template: "{controller=Home}/{action=Index}/{id?}"); 
    }); 
}

[EnableCors("CorsPolicy")]
public class MyApiController : Controller

public void ConfigureServices(IServiceCollection services)
{
      services.AddCors();
      services.AddMvc();
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }
 
    app.UseCors(policyBuilder =>
    {
        string[] origins = new string[] { "http://localhost:2000", "http://localhost:2001" };
 
        policyBuilder
            .AllowAnyHeader()
            .AllowAnyMethod()
            .WithOrigins(origins);
    });
 
    app.UseMvc();
}

public void ConfigureServices(IServiceCollection services)
{
    services.AddCors(options =>
    {
        options.AddDefaultPolicy(
            builder =>
            {
            builder
                .AllowAnyOrigin()
                .AllowAnyMethod()
                .AllowAnyHeader();
            });
          options.AddPolicy("MyCORSPolicy",
            builder =>
            {
                builder.WithOrigins("http://localhost:49373")
                                    .AllowAnyHeader()
                                    .AllowAnyMethod();
            });
     });
    services.AddMvc().AddNewtonsoftJson();
}

Access to XMLHttpRequest at 'http://localhost:22135/chat/negotiate?jwt=<removed the jwt key>' 
from origin 'http://localhost:53150' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: 
The value of the 'Access-Control-Allow-Origin' header in the response must not be the wildcard '*' when the request's credentials mode is 'include'. 
The credentials mode of requests initiated by the XMLHttpRequest is controlled by the withCredentials attribute.

services.AddCors(options =>
{
     options.AddPolicy("AllowAllOrigins",
         builder =>
          {
              builder
                 .AllowAnyOrigin()
                 .AllowAnyHeader()
                 .AllowAnyMethod()
                 .AllowCredentials();
          });
    });

var xhr = new XMLHttpRequest();
xhr.open('get', 'http://www.example.com/api/test');
xhr.withCredentials = true;

//In jQuery:
$.ajax({
  type: 'get',
  url: 'http://www.example.com/home',
  xhrFields: {
    withCredentials: true
}

//ES6 fetch API:
fetch(
   'http://remote-url.com/users',
   {
     'PUT',
     headers: {
          'Accept': 'application/json',
          'Content-Type': 'application/json'
     },
     mode: 'cors',
     credentials: 'include',
     body: JSON.stringify(body)
   }
)
.then((response) => response.json())
.then((response) => console.log(response))
.catch((error) => console.error(error));

[EnableCors(origins: "http://MyWebsite.com", headers: "*", methods: "*")]
//is not the same as this:
[EnableCors(origins:"http://mywebsite.com", headers: "*", methods: "*")]