<PropertyGroup>
    <TargetFramework>netcoreapp1.1</TargetFramework>
    <TypeScriptCompileBlocked>true</TypeScriptCompileBlocked>
  </PropertyGroup>

  <ItemGroup>
    <Folder Include="Controllers\" />
    <Folder Include="wwwroot\" />
  </ItemGroup>
 
  <ItemGroup>
    <Compile Remove="node_modules\**" />
    <Content Remove="node_modules\**" />
    <EmbeddedResource Remove="node_modules\**" />
    <None Remove="node_modules\**" />
  </ItemGroup>
 
  <ItemGroup>
    <Compile Remove="src\**" />
    <Content Remove="src\**" />
    <EmbeddedResource Remove="src\**" />    
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore" Version="1.1.1" />
    <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.1.2" />
    <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.1.1" />
  </ItemGroup>
 
  <ItemGroup>
    <DotNetCliToolReference Include="Microsoft.DotNet.Watcher.Tools" Version="1.0.0" />
  </ItemGroup>
 
  <ItemGroup>
    <!-- extends watching group to include *.js files -->
    <Watch Include="**\*.js" Exclude="node_modules\**\*;**\*.js.map;obj\**\*;bin\**\*" />
  </ItemGroup>

using System.Collections.Generic;
using Microsoft.AspNetCore.Mvc;
 
namespace ASPNETCoreIntegrationWithAngularCLI.Controllers
{
  [Route("api/[controller]")]
  public class ValuesController : Controller
  {
    // GET: api/values
    [HttpGet]
    [ResponseCache(NoStore = true, Location = ResponseCacheLocation.None)]
    public IEnumerable<string> Get()
    {
      return new string[] { "Hello", "DNT" };
    }
  }
}

using System;
using System.IO;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
 
namespace ASPNETCoreIntegrationWithAngularCLI
{
    public class Startup
    {
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc();
        }
 
        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            loggerFactory.AddConsole();
 
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
 
            app.Use(async (context, next) => {
                await next();
                if (context.Response.StatusCode == 404 &&
                    !Path.HasExtension(context.Request.Path.Value) &&
                    !context.Request.Path.Value.StartsWith("/api/", StringComparison.OrdinalIgnoreCase))
                {
                    context.Request.Path = "/index.html";
                    await next();
                }
            });
 
            app.UseMvcWithDefaultRoute();
            app.UseDefaultFiles();
            app.UseStaticFiles();
        }
    }
}

 >ng new ClientApp --routing --skip-install --skip-git --skip-commit

"apps": [
    {
      "root": "src",
      "outDir": "wwwroot",

import { Component, OnInit } from '@angular/core';
import { Http } from '@angular/http'; 
 
@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit {
  constructor(private _httpService: Http) { }
 
  apiValues: string[] = [];
 
  ngOnInit() {
    this._httpService.get('/api/values').subscribe(values => {
      this.apiValues = values.json() as string[];
    });
  }
}

<h1>Application says:</h1>
<ul *ngFor="let value of apiValues">
  <li>{{value}}</li>
</ul>
<router-outlet></router-outlet>

 > ng build --watch

<Target Name="AngularBuild" AfterTargets="Build">
    <Exec Command="ng build" />
</Target>

> dotnet watch run

>dotnet watch run
[90mwatch : [39mStarted
Hosting environment: Production
Now listening on: http://localhost:5000
Application started. Press Ctrl+C to shut down.

{
  "/api": {
    "target": "http://localhost:5000",
    "secure": false
  }
}

 >ng serve --proxy-config proxy.config.json -o

        public void ConfigureServices(IServiceCollection services)
        {
            services.Configure<BearerTokensOptions>(options => Configuration.GetSection("BearerTokens").Bind(options));

            services
                .AddAuthentication(options =>
                {
                    options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
                    options.DefaultSignInScheme = JwtBearerDefaults.AuthenticationScheme;
                    options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
                })
                .AddJwtBearer(cfg =>
                {
                    cfg.RequireHttpsMetadata = false;
                    cfg.SaveToken = true;
                    cfg.TokenValidationParameters = new TokenValidationParameters
                    {
                        ValidIssuer = Configuration["BearerTokens:Issuer"],
                        ValidAudience = Configuration["BearerTokens:Audience"],
                        IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(Configuration["BearerTokens:Key"])),
                        ValidateIssuerSigningKey = true,
                        ValidateLifetime = true,
                        ClockSkew = TimeSpan.Zero
                    };
                    cfg.Events = new JwtBearerEvents
                    {
                        OnAuthenticationFailed = context =>
                        {
                            var logger = context.HttpContext.RequestServices.GetRequiredService<ILoggerFactory>().CreateLogger(nameof(JwtBearerEvents));
                            logger.LogError("Authentication failed.", context.Exception);
                            return Task.CompletedTask;
                        },
                        OnTokenValidated = context =>
                        {
                            var tokenValidatorService = context.HttpContext.RequestServices.GetRequiredService<ITokenValidatorService>();
                            return tokenValidatorService.ValidateAsync(context);
                        },
                        OnMessageReceived = context =>
                         {
                             return Task.CompletedTask;
                         },
                        OnChallenge = context =>
                        {
                            var logger = context.HttpContext.RequestServices.GetRequiredService<ILoggerFactory>().CreateLogger(nameof(JwtBearerEvents));
                            logger.LogError("OnChallenge error", context.Error, context.ErrorDescription);
                            return Task.CompletedTask;
                        }
                    };
                });

{
  "BearerTokens": {
    "Key": "This is my shared key, not so secret, secret!",
    "Issuer": "http://localhost/",
    "Audience": "Any",
    "AccessTokenExpirationMinutes": 2,
    "RefreshTokenExpirationMinutes": 60
  }
}

[Authorize(AuthenticationSchemes = JwtBearerDefaults.AuthenticationScheme)]

$.ajax({
     headers: { 'Authorization': 'Bearer ' + jwtToken },

const string tokenKey = "my.custom.jwt.token.key";
if (context.HttpContext.Items.ContainsKey(tokenKey))
{
    context.Token = (string)context.HttpContext.Items[tokenKey];
}

OnTokenValidated = context =>
{
      var tokenValidatorService = context.HttpContext.RequestServices.GetRequiredService<ITokenValidatorService>();
      return tokenValidatorService.ValidateAsync(context);
},

    public class TokenValidatorService : ITokenValidatorService
    {
        private readonly IUsersService _usersService;
        private readonly ITokenStoreService _tokenStoreService;

        public TokenValidatorService(IUsersService usersService, ITokenStoreService tokenStoreService)
        {
            _usersService = usersService;
            _usersService.CheckArgumentIsNull(nameof(usersService));

            _tokenStoreService = tokenStoreService;
            _tokenStoreService.CheckArgumentIsNull(nameof(_tokenStoreService));
        }

        public async Task ValidateAsync(TokenValidatedContext context)
        {
            var userPrincipal = context.Principal;

            var claimsIdentity = context.Principal.Identity as ClaimsIdentity;
            if (claimsIdentity?.Claims == null || !claimsIdentity.Claims.Any())
            {
                context.Fail("This is not our issued token. It has no claims.");
                return;
            }

            var serialNumberClaim = claimsIdentity.FindFirst(ClaimTypes.SerialNumber);
            if (serialNumberClaim == null)
            {
                context.Fail("This is not our issued token. It has no serial.");
                return;
            }

            var userIdString = claimsIdentity.FindFirst(ClaimTypes.UserData).Value;
            if (!int.TryParse(userIdString, out int userId))
            {
                context.Fail("This is not our issued token. It has no user-id.");
                return;
            }

            var user = await _usersService.FindUserAsync(userId).ConfigureAwait(false);
            if (user == null || user.SerialNumber != serialNumberClaim.Value || !user.IsActive)
            {
                // user has changed his/her password/roles/stat/IsActive
                context.Fail("This token is expired. Please login again.");
            }

            var accessToken = context.SecurityToken as JwtSecurityToken;
            if (accessToken == null || string.IsNullOrWhiteSpace(accessToken.RawData) ||
                !await _tokenStoreService.IsValidTokenAsync(accessToken.RawData, userId).ConfigureAwait(false))
            {
                context.Fail("This token is not in our database.");
                return;
            }

            await _usersService.UpdateUserLastActivityDateAsync(userId).ConfigureAwait(false);
        }
    }

    public class UserToken
    {
        public int Id { get; set; }

        public string AccessTokenHash { get; set; }

        public DateTimeOffset AccessTokenExpiresDateTime { get; set; }

        public string RefreshTokenIdHash { get; set; }

        public DateTimeOffset RefreshTokenExpiresDateTime { get; set; }

        public int UserId { get; set; } // one-to-one association
        public virtual User User { get; set; }
    }

    public interface ITokenStoreService
    {
        Task AddUserTokenAsync(UserToken userToken);
        Task AddUserTokenAsync(
                User user, string refreshToken, string accessToken,
                DateTimeOffset refreshTokenExpiresDateTime, DateTimeOffset accessTokenExpiresDateTime);
        Task<bool> IsValidTokenAsync(string accessToken, int userId);
        Task DeleteExpiredTokensAsync();
        Task<UserToken> FindTokenAsync(string refreshToken);
        Task DeleteTokenAsync(string refreshToken);
        Task InvalidateUserTokensAsync(int userId);
        Task<(string accessToken, string refreshToken)> CreateJwtTokens(User user);
    }

        private async Task<string> createAccessTokenAsync(User user, DateTime expires)
        {
            var claims = new List<Claim>
            {
                // Unique Id for all Jwt tokes
                new Claim(JwtRegisteredClaimNames.Jti, Guid.NewGuid().ToString()),
                // Issuer
                new Claim(JwtRegisteredClaimNames.Iss, _configuration.Value.Issuer),
                // Issued at
                new Claim(JwtRegisteredClaimNames.Iat, DateTime.UtcNow.ToUnixEpochDate().ToString(), ClaimValueTypes.Integer64),
                new Claim(ClaimTypes.NameIdentifier, user.Id.ToString()),
                new Claim(ClaimTypes.Name, user.Username),
                new Claim("DisplayName", user.DisplayName),
                // to invalidate the cookie
                new Claim(ClaimTypes.SerialNumber, user.SerialNumber),
                // custom data
                new Claim(ClaimTypes.UserData, user.Id.ToString())
            };

            // add roles
            var roles = await _rolesService.FindUserRolesAsync(user.Id).ConfigureAwait(false);
            foreach (var role in roles)
            {
                claims.Add(new Claim(ClaimTypes.Role, role.Name));
            }

            var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_configuration.Value.Key));
            var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);
            var token = new JwtSecurityToken(
                issuer: _configuration.Value.Issuer,
                audience: _configuration.Value.Audience,
                claims: claims,
                notBefore: DateTime.UtcNow,
                expires: expires,
                signingCredentials: creds);
            return new JwtSecurityTokenHandler().WriteToken(token);
        }

<ItemGroup>
   <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="2.0.0" />
</ItemGroup>

        public async Task<(string accessToken, string refreshToken)> CreateJwtTokens(User user)
        {
            var now = DateTimeOffset.UtcNow;
            var accessTokenExpiresDateTime = now.AddMinutes(_configuration.Value.AccessTokenExpirationMinutes);
            var refreshTokenExpiresDateTime = now.AddMinutes(_configuration.Value.RefreshTokenExpirationMinutes);
            var accessToken = await createAccessTokenAsync(user, accessTokenExpiresDateTime.UtcDateTime).ConfigureAwait(false);
            var refreshToken = Guid.NewGuid().ToString().Replace("-", "");

            await AddUserTokenAsync(user, refreshToken, accessToken, refreshTokenExpiresDateTime, accessTokenExpiresDateTime).ConfigureAwait(false);
            await _uow.SaveChangesAsync().ConfigureAwait(false);

            return (accessToken, refreshToken);
        }

        [AllowAnonymous]
        [HttpPost("[action]")]
        public async Task<IActionResult> Login([FromBody]  User loginUser)
        {
            if (loginUser == null)
            {
                return BadRequest("user is not set.");
            }

            var user = await _usersService.FindUserAsync(loginUser.Username, loginUser.Password).ConfigureAwait(false);
            if (user == null || !user.IsActive)
            {
                return Unauthorized();
            }

            var (accessToken, refreshToken) = await _tokenStoreService.CreateJwtTokens(user).ConfigureAwait(false);
            return Ok(new { access_token = accessToken, refresh_token = refreshToken });
        }

        [AllowAnonymous]
        [HttpPost("[action]")]
        public async Task<IActionResult> RefreshToken([FromBody]JToken jsonBody)
        {
            var refreshToken = jsonBody.Value<string>("refreshToken");
            if (string.IsNullOrWhiteSpace(refreshToken))
            {
                return BadRequest("refreshToken is not set.");
            }

            var token = await _tokenStoreService.FindTokenAsync(refreshToken);
            if (token == null)
            {
                return Unauthorized();
            }

            var (accessToken, newRefreshToken) = await _tokenStoreService.CreateJwtTokens(token.User).ConfigureAwait(false);
            return Ok(new { access_token = accessToken, refresh_token = newRefreshToken });
        }

        [AllowAnonymous]
        [HttpGet("[action]"), HttpPost("[action]")]
        public async Task<bool> Logout()
        {
            var claimsIdentity = this.User.Identity as ClaimsIdentity;
            var userIdValue = claimsIdentity.FindFirst(ClaimTypes.UserData)?.Value;

            // The Jwt implementation does not support "revoke OAuth token" (logout) by design.
            // Delete the user's tokens from the database (revoke its bearer token)
            if (!string.IsNullOrWhiteSpace(userIdValue) && int.TryParse(userIdValue, out int userId))
            {
                await _tokenStoreService.InvalidateUserTokensAsync(userId).ConfigureAwait(false);
            }
            await _tokenStoreService.DeleteExpiredTokensAsync().ConfigureAwait(false);
            await _uow.SaveChangesAsync().ConfigureAwait(false);

            return true;
        }

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import { action, observable, computed } from 'mobx';

class PizzaCalculator {
  @observable numberOfPeople = 0;
  @observable slicesPerPerson = 2;
  @observable slicesPerPie = 8;

  @computed get slicesNeeded() {
    console.log('Getting slices needed');
    return this.numberOfPeople * this.slicesPerPerson;
   }

  @computed get piesNeeded() {
    console.log('Getting pies needed');
    return Math.ceil(this.slicesNeeded / this.slicesPerPie);
   }

   @action addGuest() {
     this.numberOfPeople!++;
   }
}

const extendObservable = (target, source) => {
  source.keys().forEach(key => {
    const wrappedInObservable = observable(source[key]);
    Object.defineProperty(target, key, {
      set: value.set.
      get: value.get
    });
  });
};

 > npm install --save mobx mobx-react

import { observer } from "mobx-react";

@observer class Counter extends Component {

const Counter = observer(({ count }) => {
  return (
   // ...
  );
});

class ContainerComponent extends Component () {
   componentDidMount() {
     this.stopListening = autorun(() => this.render());
   }

   componentWillUnmount() {
     this.stopListening();
   }

   render() { … }
}

import { Provider } from 'mobx-react';

import ItemStore from './store/ItemStore';
import Application from './components/Application';

const itemStore = new ItemStore();

ReactDOM.render(
   <Provider itemStore={itemStore}>
     <Application />
   </Provider>,
   document.getElementById('root'),
);

@inject('itemStore')
class NewItem extends Component {
// ...

const UnpackedItems = inject('itemStore')(
    observer(({ itemStore }) => (
    // ...
  )),
);

> create-react-app state-management-with-mobx-part2
> cd state-management-with-mobx-part2
> npm start

> npm install --save mobx mobx-react bootstrap

import "bootstrap/dist/css/bootstrap.css";

import "./index.css";
import "bootstrap/dist/css/bootstrap.css";

import { autorun, decorate, observable } from "mobx";
import React from "react";
import ReactDOM from "react-dom";

import Counter from "./components/Counter";
import * as serviceWorker from "./serviceWorker";

class Count {
  value = 0;

  increment = () => {
    this.value++;
  };

  decrement = () => {
    this.value--;
  };
}

decorate(Count, { value: observable });

const count = (window.count = new Count());
autorun(() => console.log("The count changed!", count.value));

ReactDOM.render(
  <main className="container">
    <Counter count={count} />
  </main>,
  document.getElementById("root")
);

serviceWorker.unregister();

import { observer } from "mobx-react";
import React from "react";

const Counter = observer(({ count }) => {
  return (
    <section className="card mt-5">
      <div className="card-body text-center">
        <span className="badge m-2 badge-primary">{count.value}</span>
      </div>
      <div className="card-footer">
        <div className="d-flex justify-content-center align-items-center">
          <button
            className="btn btn-secondary btn-sm"
            onClick={count.increment}
          >
            +
          </button>
          <button
            className="btn btn-secondary btn-sm m-2"
            onClick={count.decrement}
          >
            -
          </button>
        </div>
      </div>
    </section>
  );
});

export default Counter;