using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Linq;

namespace FindDuplicateServices.Utils
{
    public static class DuplicateServicesFinder
    {
        private static List<(Type ServiceType, int RegistrationTimes)> _duplicateServices;

        public static IHostBuilder CountDuplicateServices(this IHostBuilder hostBuilder)
        {
            hostBuilder.ConfigureServices(services =>
            {
                _duplicateServices = services.Where(
                        serviceDescriptor => !serviceDescriptor.ServiceType.Assembly.FullName.Contains("Microsoft"))
                                        .GroupBy(serviceDescriptor => serviceDescriptor.ServiceType)
                                        .Where(g => g.Count() > 1)
                                        .Select(g => (g.Key, g.Count()))
                                        .ToList();
            });
            return hostBuilder;
        }

        public static IHost ReportDuplicateServices(this IHost host)
        {
            var logger = host.Services.GetRequiredService<ILogger<Program>>();
            _duplicateServices.ForEach(item =>
                logger.LogWarning($"Service Type: `{item.ServiceType}` -> Registration times: {item.RegistrationTimes}"));
            return host;
        }

        public static void RemoveService(this IServiceCollection services, Type serviceType)
        {
            var serviceDescriptor = services.FirstOrDefault(descriptor => descriptor.ServiceType == serviceType);
            if (serviceDescriptor != null)
            {
                services.Remove(serviceDescriptor);
            }
        }
    }
}

using FindDuplicateServices.Utils;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Hosting;

namespace FindDuplicateServices
{
    public class Program
    {
        public static void Main(string[] args)
        {
            CreateHostBuilder(args).Build().ReportDuplicateServices().Run();
        }

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>();
                })
                .CountDuplicateServices();
    }
}

namespace FindDuplicateServices
{
    public class Startup
    {
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddControllers();
            services.AddScoped<IWeatherForecastService, WeatherForecastService>();
            services.AddScoped<IWeatherForecastService, WeatherForecastService>();
        }

using System.ComponentModel.DataAnnotations.Schema;

namespace BlazorServer.Entities
{
    public class HotelRoomImage
    {
        public int Id { get; set; }

        public string RoomImageUrl { get; set; }

        [ForeignKey("RoomId")]
        public virtual HotelRoom HotelRoom { get; set; }
        public int RoomId { get; set; }
    }
}

namespace BlazorServer.Entities
{
    public class HotelRoom
    {
        // ...
        public virtual ICollection<HotelRoomImage> HotelRoomImages { get; set; }
    }
}

namespace BlazorServer.DataAccess
{
    public class ApplicationDbContext : DbContext
    {
        public DbSet<HotelRoomImage> HotelRoomImages { get; set; }

        // ...
    }
}

dotnet tool update --global dotnet-ef --version 5.0.3
dotnet build
dotnet ef migrations --startup-project ../BlazorServer.App/ add Init --context ApplicationDbContext
dotnet ef --startup-project ../BlazorServer.App/ database update --context ApplicationDbContext

namespace BlazorServer.Models
{
    public class HotelRoomImageDTO
    {
        public int Id { get; set; }

        public int RoomId { get; set; }

        public string RoomImageUrl { get; set; }
    }
}

using AutoMapper;
using BlazorServer.Entities;

namespace BlazorServer.Models.Mappings
{
    public class MappingProfile : Profile
    {
        public MappingProfile()
        {
            // ...
            CreateMap<HotelRoomImageDTO, HotelRoomImage>().ReverseMap(); // two-way mapping
        }
    }
}

namespace BlazorServer.Services
{
    public interface IHotelRoomImageService
    {
        Task<int> CreateHotelRoomImageAsync(HotelRoomImageDTO imageDTO);

        Task<int> DeleteHotelRoomImageByImageIdAsync(int imageId);

        Task<int> DeleteHotelRoomImageByRoomIdAsync(int roomId);

        Task<List<HotelRoomImageDTO>> GetHotelRoomImagesAsync(int roomId);
    }
}

namespace BlazorServer.Services
{
    public class HotelRoomImageService : IHotelRoomImageService
    {
        private readonly ApplicationDbContext _dbContext;
        private readonly IMapper _mapper;
        private readonly IConfigurationProvider _mapperConfiguration;

        public HotelRoomImageService(ApplicationDbContext dbContext, IMapper mapper)
        {
            _dbContext = dbContext ?? throw new ArgumentNullException(nameof(dbContext));
            _mapper = mapper ?? throw new ArgumentNullException(nameof(mapper));
            _mapperConfiguration = mapper.ConfigurationProvider;
        }

        public async Task<int> CreateHotelRoomImageAsync(HotelRoomImageDTO imageDTO)
        {
            var image = _mapper.Map<HotelRoomImage>(imageDTO);
            await _dbContext.HotelRoomImages.AddAsync(image);
            return await _dbContext.SaveChangesAsync();
        }

        public async Task<int> DeleteHotelRoomImageByImageIdAsync(int imageId)
        {
            var image = await _dbContext.HotelRoomImages.FindAsync(imageId);
            _dbContext.HotelRoomImages.Remove(image);
            return await _dbContext.SaveChangesAsync();
        }

        public async Task<int> DeleteHotelRoomImageByRoomIdAsync(int roomId)
        {
            var imageList = await _dbContext.HotelRoomImages.Where(x => x.RoomId == roomId).ToListAsync();
            _dbContext.HotelRoomImages.RemoveRange(imageList);
            return await _dbContext.SaveChangesAsync();
        }

        public Task<List<HotelRoomImageDTO>> GetHotelRoomImagesAsync(int roomId)
        {
            return _dbContext.HotelRoomImages
                            .Where(x => x.RoomId == roomId)
                            .ProjectTo<HotelRoomImageDTO>(_mapperConfiguration)
                            .ToListAsync();
        }
    }
}

namespace BlazorServer.App
{
    public class Startup
    {
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddScoped<IHotelRoomImageService, HotelRoomImageService>();
            // ...

using Microsoft.AspNetCore.Components.Forms;
using System.Threading.Tasks;

namespace BlazorServer.Services
{
    public interface IFileUploadService
    {
        void DeleteFile(string fileName, string webRootPath, string uploadFolder);
        Task<string> UploadFileAsync(IBrowserFile inputFile, string webRootPath, string uploadFolder);
    }
}

using Microsoft.AspNetCore.Components.Forms;
using System;
using System.IO;
using System.Threading.Tasks;

namespace BlazorServer.Services
{
    public class FileUploadService : IFileUploadService
    {
        private const int MaxBufferSize = 0x10000;

        public void DeleteFile(string fileName, string webRootPath, string uploadFolder)
        {
            var path = Path.Combine(webRootPath, uploadFolder, fileName);
            if (File.Exists(path))
            {
                File.Delete(path);
            }
        }

        public async Task<string> UploadFileAsync(IBrowserFile inputFile, string webRootPath, string uploadFolder)
        {
            createUploadDir(webRootPath, uploadFolder);
            var (fileName, imageFilePath) = getOutputFileInfo(inputFile, webRootPath, uploadFolder);

            using (var outputFileStream = new FileStream(
                        imageFilePath, FileMode.Create, FileAccess.Write,
                        FileShare.None, MaxBufferSize, useAsync: true))
            {
                using var inputStream = inputFile.OpenReadStream();
                await inputStream.CopyToAsync(outputFileStream);
            }

            return $"{uploadFolder}/{fileName}";
        }

        private static (string FileName, string FilePath) getOutputFileInfo(
                    IBrowserFile inputFile, string webRootPath, string uploadFolder)
        {
            var fileName = Path.GetFileName(inputFile.Name);
            var imageFilePath = Path.Combine(webRootPath, uploadFolder, fileName);
            if (File.Exists(imageFilePath))
            {
                var fileNameWithoutExtension = Path.GetFileNameWithoutExtension(fileName);
                var fileExtension = Path.GetExtension(fileName);
                fileName = $"{fileNameWithoutExtension}-{Guid.NewGuid()}{fileExtension}";
                imageFilePath = Path.Combine(webRootPath, uploadFolder, fileName);
            }
            return (fileName, imageFilePath);
        }

        private static void createUploadDir(string webRootPath, string uploadFolder)
        {
            var folderDirectory = Path.Combine(webRootPath, uploadFolder);
            if (!Directory.Exists(folderDirectory))
            {
                Directory.CreateDirectory(folderDirectory);
            }
        }
    }
}

<Project Sdk="Microsoft.NET.Sdk">
  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.Components.Web" Version="5.0.3" />
  </ItemGroup>
</Project>

namespace BlazorServer.App
{
    public class Startup
    {
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddScoped<IFileUploadService, FileUploadService>();
            // ...

    /// <summary>
    /// حساب بانکی
    /// </summary>
    public class Account
    {
        /// <summary>
        /// مشتری
        /// </summary>
        public string Customer { get; set; }
        /// <summary>
        /// موجودی حساب
        /// </summary>
        public float Balance { get; set; }
        /// <summary>
        /// وضعیت
        /// </summary>
        public bool Active { get; set; }

        public Account(string customer, float balance)
        {
            Customer = customer;
            Balance = balance;
            Active = true;
        }
        /// <summary>
        /// افزایش موجودی / واریز به حساب
        /// </summary>
        /// <param name="amount">مبلغ واریز</param>
        public void Credit(float amount)
        {
            if (!Active)
                throw new Exception("این حساب مسدود است.");
            if (amount < 0)
                throw new ArgumentOutOfRangeException("amount");
            Balance += amount;
        }
        /// <summary>
        /// کاهش موجودی / برداشت از حساب
        /// </summary>
        /// <param name="amount">مبلغ برداشت</param>
        public void Debit(float amount)
        {
            if (!Active)
                throw new Exception("این حساب مسدود است.");
            if (amount < 0)
                throw new ArgumentOutOfRangeException("amount");
            if (Balance < amount)
                throw new ArgumentOutOfRangeException("amount");
            Balance -= amount;
        }
        /// <summary>
        /// انسداد / رفع انسداد
        /// </summary>
        public void ChangeStateAccount()
        {
            Active = !Active;
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            var account = new Account("Ali",1000);

            account.Credit(4000);
            account.Debit(2000);
            Console.WriteLine("Current balance is ${0}", account.Balance);
            Console.ReadKey();
        }
    }

    [TestClass]
    public class UnitTest
    {
        /// <summary>
        /// تعریف حساب جدید و بررسی تمامی فرآیند‌های معمول روی حساب
        /// </summary>
        [TestMethod]
        public void Create_New_Account_And_Check_The_Process()
        {
            //Arrange
            var account = new Account("Hassan", 4000);
            var account2 = new Account("Ali", 10000);
            //Act
            account.Credit(5000);
            account2.Debit(3000);
            account.ChangeStateAccount();
            account2.Active = false;
            account2.ChangeStateAccount();
            //Assert
            Assert.AreEqual(account.Balance,9000);
            Assert.AreEqual(account2.Balance,7000);
            Assert.IsTrue(account2.Active);
            Assert.AreEqual(account.Active,false);
        }

        /// <summary>
        /// زمانی که کاربر بخواهد به یک حساب مسدود واریز کند باید جلوی آن گرفته شود.
        /// </summary>
        [TestMethod]
        [ExpectedException(typeof (Exception))]
        public void When_Deactive_Account_Wants_To_add_Credit_Should_Throw_Exception()
        {
            //Arrange
            var account = new Account("Hassan", 4000) {Active = false};
            //Act
            account.Credit(4000);
            //Assert
            //Assert is handled with ExpectedException
        }

        [TestMethod]
        [ExpectedException(typeof (ArgumentOutOfRangeException))]
        public void When_Customer_Wants_To_Debit_More_Than_Balance_Should_Throw_ArgumentOutOfRangeException()
        {
            //Arrange
            var account = new Account("Hassan", 4000);
            //Act
            account.Debit(5000);
            //Assert
            //Assert is handled with ArgumentOutOfRangeException
        }

  public class OrganizationalService : ICommandHandler<CreateUnitTypeCommand>,
                                         ICommandHandler<DeleteUnitTypeCommand>,                                    
    {
        private readonly IUnitOfWork _unitOfWork;
        private readonly IUnitTypeRepository _unitTypeRepository;
        private readonly IOrganizationUnitRepository _organizationUnitRepository;
        private readonly IOrganizationUnitDomainService _organizationUnitDomainService;

        public OrganizationalService(IUnitOfWork unitOfWork, IUnitTypeRepository unitTypeRepository, IOrganizationUnitRepository organizationUnitRepository, IOrganizationUnitDomainService organizationUnitDomainService)
        {
            _unitOfWork = unitOfWork;
            _unitTypeRepository = unitTypeRepository;
            _organizationUnitRepository = organizationUnitRepository;
            _organizationUnitDomainService = organizationUnitDomainService;
        }

    [TestClass]
    public class OrganizationServiceTest
    {
        private static OrganizationalService _organizationalService;
        private static Mock<IUnitTypeRepository> _mockUnitTypeRepository;
        private static Mock<IUnitOfWork> _mockUnitOfWork;
        private static Mock<IOrganizationUnitRepository> _mockOrganizationUnitRepository;
        private static Mock<IOrganizationUnitDomainService> _mockOrganizationUnitDomainService;

        [ClassInitialize]
        public static void ClassInit(TestContext context)
        {
            TestBootstrapper.ConfigureDependencies();
            _mockUnitOfWork = new Mock<IUnitOfWork>();
            _mockUnitTypeRepository = new Mock<IUnitTypeRepository>();
            _mockOrganizationUnitRepository = new Mock<IOrganizationUnitRepository>();
            _mockOrganizationUnitDomainService=new Mock<IOrganizationUnitDomainService>();
            _organizationalService = new OrganizationalService(_mockUnitOfWork.Object, _mockUnitTypeRepository.Object,  _mockOrganizationUnitRepository.Object,_mockOrganizationUnitDomainService.Object);
        }

        /// <summary>
        /// یک نوع واحد سازمانی را حذف مینماید
        /// </summary>
        /// <param name="command"></param>
        public void Handle(DeleteUnitTypeCommand command)
        {
            var unitType = _unitTypeRepository.FindBy(command.UnitTypeId);
            if (unitType == null)
                throw new DeleteEntityNotFoundException();

            ICanDeleteUnitTypeSpecification canDeleteUnitType = new CanDeleteUnitTypeSpecification(_organizationUnitRepository);
            if (canDeleteUnitType.IsSatisfiedBy(unitType))
                throw new UnitTypeIsUnderUsingException(unitType.Title);
            _unitTypeRepository.Remove(unitType);
        }

        /// <summary>
        /// کامند حذف نوع واحد سازمانی باید به درستی حذف کند.
        /// </summary>
        [TestMethod]
        public void DeleteUnitTypeCommand_Should_Delete_UnitType()
        {
            //Arrange
            var unitTypeId=new Guid();
            var deleteUnitTypeCommand = new DeleteUnitTypeCommand { UnitTypeId = unitTypeId };
            var unitType = new UnitType("خوشه");
            var org = new List<OrganizationUnit>();
            _mockUnitTypeRepository.Setup(d => d.FindBy(deleteUnitTypeCommand.UnitTypeId)).Returns(unitType);
            _mockUnitTypeRepository.Setup(x => x.Remove(unitType));
            _mockOrganizationUnitRepository.Setup(z => z.FindBy(unitType)).Returns(org);
            try
            {
                //Act
                _organizationalService.Handle(deleteUnitTypeCommand);
            }
            catch (Exception ex)
            {
                //Assert
                Assert.Fail(ex.Message);
            }
        }

        /// <summary>
        /// کامند حذف یک نوع واحد سازمانی باید پیش از حذف بررسی کند که این شناسه داده شده برای حذف موجود باشد.
        /// </summary>
        [TestMethod]
        [ExpectedException(typeof(DeleteEntityNotFoundException))]
        public void DeleteUnitTypeCommand_ShouldNot_Delete_When_UnitTypeId_NotExist()
        {
            //Arrange
            var unitTypeId = new Guid();
            var deleteUnitTypeCommand = new DeleteUnitTypeCommand();
            var unitType = new UnitType("خوشه");
            var org = new List<OrganizationUnit>();
            _mockUnitTypeRepository.Setup(d => d.FindBy(unitTypeId)).Returns(unitType);
            _mockUnitTypeRepository.Setup(x => x.Remove(unitType));
            _mockOrganizationUnitRepository.Setup(z => z.FindBy(unitType)).Returns(org);

            //Act
            _organizationalService.Handle(deleteUnitTypeCommand);
        }

        /// <summary>
        /// کامند حذف یک نوع واحد سازمانی نباید اجرا شود وقتی که نوع واحد برای تعریف واحد‌های سازمان استفاده شده است.
        /// </summary>
        [TestMethod]
        [ExpectedException(typeof(UnitTypeIsUnderUsingException))]
        public void DeleteUnitTypeCommand_ShouldNot_Delete_When_UnitType_Exist_but_UsedForDefineOrganizationUnit()
        {
            //Arrange
            var unitTypeId = new Guid();
            var deleteUnitTypeCommand = new DeleteUnitTypeCommand { UnitTypeId = unitTypeId };
            var unitType = new UnitType("خوشه");
            var org = new List<OrganizationUnit>()
            {
                new OrganizationUnit("مدیریت یک", unitType, null),
                new OrganizationUnit("مدیریت دو", unitType, null)
            };
            _mockUnitTypeRepository.Setup(d => d.FindBy(deleteUnitTypeCommand.UnitTypeId)).Returns(unitType);
            _mockUnitTypeRepository.Setup(x => x.Remove(unitType));
            _mockOrganizationUnitRepository.Setup(z => z.FindBy(unitType)).Returns(org);

            //Act
            _organizationalService.Handle(deleteUnitTypeCommand);
        }

 let dialogRef = dialog.open(UserProfileComponent,  { height: '400px’,  width: '600px’  });

dialogRef.afterClosed().subscribe(result => {
   console.log(`Dialog result: ${result}`);
});
dialogRef.close('value');

@Component({/* ... */})
export class YourDialog {

   constructor(public dialogRef: MatDialogRef<YourDialog>) { }

   closeDialog() {
      this.dialogRef.close('Value….!’);
   }
}

<h2 mat-dialog-title>Delete all</h2>
<mat-dialog-content>Are you sure?</mat-dialog-content>
<mat-dialog-actions>
    <button mat-button mat-dialog-close>No</button>
    <!-- Can optionally provide a result for the closing dialog. -->
    <button mat-button [mat-dialog-close]="true">Yes</button>
</mat-dialog-actions>

<mat-toolbar color="primary">
  <button mat-button fxHide fxHide.xs="false" (click)="toggleSidenav.emit()">
    <mat-icon>menu</mat-icon>
  </button>

  <span>Contact Manager</span>

  <span fxFlex="1 1 auto"></span>
  <button mat-button [matMenuTriggerFor]="menu">
    <mat-icon>more_vert</mat-icon>
  </button>
  <mat-menu #menu="matMenu">
    <button mat-menu-item>New Contact</button>
  </mat-menu>
</mat-toolbar>

 <button mat-menu-item (click)="openAddContactDialog()">New Contact</button>

 ng g c contact-manager/components/new-contact-dialog --no-spec

import { NewContactDialogComponent } from "./components/new-contact-dialog/new-contact-dialog.component";

@NgModule({
  declarations: [
    NewContactDialogComponent],
  entryComponents: [
    NewContactDialogComponent
  ]
})
export class ContactManagerModule { }

import { Component, EventEmitter, OnInit, Output } from "@angular/core";
import { MatDialog } from "@angular/material";

import { NewContactDialogComponent } from "../new-contact-dialog/new-contact-dialog.component";

@Component({
  selector: "app-toolbar",
  templateUrl: "./toolbar.component.html",
  styleUrls: ["./toolbar.component.css"]
})
export class ToolbarComponent implements OnInit {

  @Output() toggleSidenav = new EventEmitter<void>();

  constructor(private dialog: MatDialog) { }

  ngOnInit() { }

  openAddContactDialog(): void {
    const dialogRef = this.dialog.open(NewContactDialogComponent, { width: "450px" });
    dialogRef.afterClosed().subscribe(result => {
      console.log("The dialog was closed", result);
    });
  }
}

<h2 mat-dialog-title>Add new contact</h2>
<mat-dialog-content>
  <div fxLayout="column">

  </div>
</mat-dialog-content>
<mat-dialog-actions>
  <button mat-button color="primary" (click)="save()">
    <mat-icon>save</mat-icon> Save
  </button>
  <button mat-button color="primary" (click)="dismiss()">
    <mat-icon>cancel</mat-icon> Cancel
  </button>
</mat-dialog-actions>

import { Component, OnInit } from "@angular/core";
import { MatDialogRef } from "@angular/material";

@Component()
export class NewContactDialogComponent implements OnInit {

  constructor(
    private dialogRef: MatDialogRef<NewContactDialogComponent>
  ) { }

  ngOnInit() {
  }

  save() {
  }

  dismiss() {
    this.dialogRef.close(null);
  }
}

import { User } from "../../models/user";

@Component()
export class NewContactDialogComponent implements OnInit {

  avatars = ["user1", "user2", "user3", "user4", "user5", "user6", "user7", "user8"];
  user: User = { id: 0, birthDate: new Date(), name: "", avatar: "", bio: "", userNotes: null };

    <mat-form-field>
      <mat-select placeholder="Avatar" [(ngModel)]="user.avatar">
        <mat-select-trigger>
          <mat-icon svgIcon="{{user.avatar}}"></mat-icon> {{ user.avatar }}
        </mat-select-trigger>
        <mat-option *ngFor="let avatar of avatars" [value]="avatar">
          <mat-icon svgIcon="{{avatar}}"></mat-icon> {{ avatar }}
        </mat-option>
      </mat-select>
    </mat-form-field>

    <mat-form-field>
      <input matInput placeholder="Name" #name="ngModel" [(ngModel)]="user.name" required>
      <mat-error *ngIf="name.invalid && name.touched">You must enter a name</mat-error>
    </mat-form-field>

    <mat-form-field>
      <input matInput [matDatepicker]="picker" placeholder="Born" [(ngModel)]="user.birthDate">
      <mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
      <mat-datepicker #picker></mat-datepicker>
    </mat-form-field>

    <mat-form-field>
      <textarea matInput placeholder="Bio" [(ngModel)]="user.bio"></textarea>
    </mat-form-field>

<mat-dialog-content>
  <div fxLayout="column">

  </div>
</mat-dialog-content>

namespace MaterialAspNetCoreBackend.WebApp.Controllers
{
    [Route("api/[controller]")]
    public class UsersController : Controller
    {
        private readonly IUsersService _usersService;

        public UsersController(IUsersService usersService)
        {
            _usersService = usersService ?? throw new ArgumentNullException(nameof(usersService));
        }

        [HttpPost]
        public async Task<IActionResult> Post([FromBody] User user)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }
            await _usersService.AddUserAsync(user);
            return Created("", user);
        }
    }
}

@Injectable({
  providedIn: "root"
})
export class UserService {

  private usersSource = new BehaviorSubject<User>(null);
  usersSourceChanges$ = this.usersSource.asObservable();

  constructor(private http: HttpClient) { }

  addUser(user: User): Observable<User> {
    const headers = new HttpHeaders({ "Content-Type": "application/json" });
    return this.http
      .post<User>("/api/users", user, { headers: headers }).pipe(
        map(response => {
          const addedUser = response || {} as User;
          this.notifyUsersSourceHasChanged(addedUser);
          return addedUser;
        }),
        catchError((error: HttpErrorResponse) => throwError(error))
      );
  }

  notifyUsersSourceHasChanged(user: User) {
    this.usersSource.next(user);
  }
}

 return Created("", user);

import { UserService } from "../../services/user.service";

@Component()
export class NewContactDialogComponent {

  user: User = { id: 0, birthDate: new Date(), name: "", avatar: "", bio: "", userNotes: null };

  constructor(
    private dialogRef: MatDialogRef<NewContactDialogComponent>,
    private userService: UserService
  ) { }

  save() {
    this.userService.addUser(this.user).subscribe(data => {
      console.log("Saved user", data);
      this.dialogRef.close(data);
    });
  }
}

import { UserService } from "../../services/user.service";

@Component()
export class SidenavComponent implements OnInit, OnDestroy {

  users: User[] = [];
  subscription: Subscription | null = null;

  constructor(
    private userService: UserService) { }

  ngOnInit() {
    this.subscription = this.userService.usersSourceChanges$.subscribe(user => {
      if (user) {
        this.users.push(user);
      }
    });
  }

  ngOnDestroy() {
    if (this.subscription) {
      this.subscription.unsubscribe();
    }
  }
}

  save() {
    this.userService.addUser(this.user).subscribe(data => {
      console.log("Saved user", data);
      this.dialogRef.close(data);
    });

  openAddContactDialog(): void {
    const dialogRef = this.dialog.open(NewContactDialogComponent, { width: "450px" });
    dialogRef.afterClosed().subscribe(result => {
      console.log("The dialog was closed", result);
    });
  }

@Component()
export class ToolbarComponent {

  @Output() toggleSidenav = new EventEmitter<void>();

  constructor(private dialog: MatDialog, private snackBar: MatSnackBar,  private router: Router) { }

  openAddContactDialog(): void {
    const dialogRef = this.dialog.open(NewContactDialogComponent, { width: "450px" });
    dialogRef.afterClosed().subscribe((result: User) => {
      console.log("The dialog was closed", result);
      if (result) {
        this.openSnackBar(`${result.name} contact has been added.`, "Navigate").onAction().subscribe(() => {
          this.router.navigate(["/contactmanager", result.id]);
        });
      }
    });
  }

  openSnackBar(message: string, action: string): MatSnackBarRef<SimpleSnackBar> {
    return this.snackBar.open(message, action, {
      duration: 5000,
    });
  }
}

import { InjectionToken } from "@angular/core";

export let APP_CONFIG = new InjectionToken<string>("app.config");

export interface IAppConfig {
  apiEndpoint: string;
  loginPath: string;
  logoutPath: string;
  refreshTokenPath: string;
  accessTokenObjectKey: string;
  refreshTokenObjectKey: string;
}

export const AppConfig: IAppConfig = {
  apiEndpoint: "http://localhost:5000/api",
  loginPath: "account/login",
  logoutPath: "account/logout",
  refreshTokenPath: "account/RefreshToken",
  accessTokenObjectKey: "access_token",
  refreshTokenObjectKey: "refresh_token"
};

import { AppConfig, APP_CONFIG } from "./app.config";

@NgModule({
  providers: [
    { provide: APP_CONFIG, useValue: AppConfig }
  ]
})
export class CoreModule {}

 ng g s Core/services/Auth

   create src/app/Core/services/auth.service.ts (110 bytes)

import { AuthService } from "./services/auth.service";

@NgModule({
  providers: [
    // global singleton services of the whole app will be listed here.
    BrowserStorageService,
    AuthService,
    { provide: APP_CONFIG, useValue: AppConfig }
  ]
})
export class CoreModule {}

import { BehaviorSubject } from "rxjs/BehaviorSubject";

@Injectable()
export class AuthService {

  private authStatusSource = new BehaviorSubject<boolean>(false);
  authStatus$ = this.authStatusSource.asObservable();

  constructor() {
    this.updateStatusOnPageRefresh();
  }

  private updateStatusOnPageRefresh(): void {
    this.authStatusSource.next(this.isLoggedIn());
  }

export enum AuthTokenType {
   AccessToken,
   RefreshToken
}

import { BrowserStorageService } from "./browser-storage.service";

export enum AuthTokenType {
  AccessToken,
  RefreshToken
}

@Injectable()
export class AuthService {

  private rememberMeToken = "rememberMe_token";

  constructor(private browserStorageService: BrowserStorageService) {  }

  rememberMe(): boolean {
    return this.browserStorageService.getLocal(this.rememberMeToken) === true;
  }

  getRawAuthToken(tokenType: AuthTokenType): string {
    if (this.rememberMe()) {
      return this.browserStorageService.getLocal(AuthTokenType[tokenType]);
    } else {
      return this.browserStorageService.getSession(AuthTokenType[tokenType]);
    }
  }

  deleteAuthTokens() {
    if (this.rememberMe()) {
      this.browserStorageService.removeLocal(AuthTokenType[AuthTokenType.AccessToken]);
      this.browserStorageService.removeLocal(AuthTokenType[AuthTokenType.RefreshToken]);
    } else {
      this.browserStorageService.removeSession(AuthTokenType[AuthTokenType.AccessToken]);
      this.browserStorageService.removeSession(AuthTokenType[AuthTokenType.RefreshToken]);
    }
    this.browserStorageService.removeLocal(this.rememberMeToken);
  }

  private setLoginSession(response: any): void {
    this.setToken(AuthTokenType.AccessToken, response[this.appConfig.accessTokenObjectKey]);
    this.setToken(AuthTokenType.RefreshToken, response[this.appConfig.refreshTokenObjectKey]);
  }

  private setToken(tokenType: AuthTokenType, tokenValue: string): void {
    if (this.rememberMe()) {
      this.browserStorageService.setLocal(AuthTokenType[tokenType], tokenValue);
    } else {
      this.browserStorageService.setSession(AuthTokenType[tokenType], tokenValue);
    }
  }
}

 {"access_token":"...","refresh_token":"..."}

export interface Credentials {
   username: string;
   password: string;
   rememberMe: boolean;
}

@Injectable()
export class AuthService {
  constructor(
    @Inject(APP_CONFIG) private appConfig: IAppConfig,
    private http: HttpClient,
    private browserStorageService: BrowserStorageService   
  ) {
    this.updateStatusOnPageRefresh();
  }

  login(credentials: Credentials): Observable<boolean> {
    const headers = new HttpHeaders({ "Content-Type": "application/json" });
    return this.http
      .post(`${this.appConfig.apiEndpoint}/${this.appConfig.loginPath}`, credentials, { headers: headers })
      .map((response: any) => {
        this.browserStorageService.setLocal(this.rememberMeToken, credentials.rememberMe);
        if (!response) {
          this.authStatusSource.next(false);
          return false;
        }
        this.setLoginSession(response);
        this.authStatusSource.next(true);
        return true;
      })
      .catch((error: HttpErrorResponse) => Observable.throw(error));
  }
}

@Injectable()
export class AuthService {

  constructor(
    @Inject(APP_CONFIG) private appConfig: IAppConfig,
    private http: HttpClient,
    private router: Router
  ) {
    this.updateStatusOnPageRefresh();
  }

  logout(navigateToHome: boolean): void {
    this.http
      .get(`${this.appConfig.apiEndpoint}/${this.appConfig.logoutPath}`)
      .finally(() => {
        this.deleteAuthTokens();
        this.unscheduleRefreshToken();
        this.authStatusSource.next(false);
        if (navigateToHome) {
          this.router.navigate(["/"]);
        }
      })
      .map(response => response || {})
      .catch((error: HttpErrorResponse) => Observable.throw(error))
      .subscribe(result => {
        console.log("logout", result);
      });
  }
}

 > npm install jwt-decode --save

 import * as jwt_decode from "jwt-decode";

  getDecodedAccessToken(): any {
    return jwt_decode(this.getRawAuthToken(AuthTokenType.AccessToken));
  }

{
  "jti": "d1272eb5-1061-45bd-9209-3ccbc6ddcf0a",
  "iss": "http://localhost/",
  "iat": 1513070340,
  "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier": "1",
  "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name": "Vahid",
  "DisplayName": "وحید",
  "http://schemas.microsoft.com/ws/2008/06/identity/claims/serialnumber": "709b64868a1d4d108ee58369f5c3c1f3",
  "http://schemas.microsoft.com/ws/2008/06/identity/claims/userdata": "1",
  "http://schemas.microsoft.com/ws/2008/06/identity/claims/role": [
    "Admin",
    "User"
  ],
  "nbf": 1513070340,
  "exp": 1513070460,
  "aud": "Any"
}

  getDisplayName(): string {
    return this.getDecodedAccessToken().DisplayName;
  }

  getAccessTokenExpirationDateUtc(): Date {
    const decoded = this.getDecodedAccessToken();
    if (decoded.exp === undefined) {
      return null;
    }
    const date = new Date(0); // The 0 sets the date to the epoch
    date.setUTCSeconds(decoded.exp);
    return date;
  }

  isAccessTokenTokenExpired(): boolean {
    const expirationDateUtc = this.getAccessTokenExpirationDateUtc();
    if (!expirationDateUtc) {
      return true;
    }
    return !(expirationDateUtc.valueOf() > new Date().valueOf());
  }

  isLoggedIn(): boolean {
    const accessToken = this.getRawAuthToken(AuthTokenType.AccessToken);
    const refreshToken = this.getRawAuthToken(AuthTokenType.RefreshToken);
    const hasTokens = !this.isEmptyString(accessToken) && !this.isEmptyString(refreshToken);
    return hasTokens && !this.isAccessTokenTokenExpired();
  }

  private isEmptyString(value: string): boolean {
    return !value || 0 === value.length;
  }

برای پابلیش پروژه نیز می‌توانید از آموزش‌های بر روی وب استفاده کنید که شامل ارائه برنامه به استفاده کنندگان با یا بدون Microsoft Store است که از فرمت نه چندان جالب appxbundle استفاده می‌کند و ما از این آموزش عبور می‌کنیم و به ذکر این نکته بسنده می‌کنیم که نسخه بعدی Visual Studio 2017 یعنی 15.9 قابلیت ساختن msix یا Windows installer را نیز دارد که از هر چیزی بهتر است و برای پابلیش بهتر است تا ارائه نسخه Stable بعدی ویژوال استودیو که احتمالا در طی کمتر از یک ماه دیگر ارائه می‌شود، صبر کنید. دقت کنید علاوه بر کامپیوتر، لپ تاپ و تبلت‌های ویندوزی، برنامه‌ی شما بر روی XBox نیز می‌تواند کار کند.

در قسمت بعدی، همین پروژه را بر روی Android نیز اجرا می‌کنیم.