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Commit 9b17de4

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‎.gitignore

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# Logs
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logs
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*.log
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npm-debug.log*
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# Runtime data
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pids
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*.pid
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*.seed
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# Directory for instrumented libs generated by jscoverage/JSCover
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lib-cov
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# Coverage directory used by tools like istanbul
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coverage
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# nyc test coverage
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.nyc_output
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# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
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.grunt
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# node-waf configuration
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.lock-wscript
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# Compiled binary addons (http://nodejs.org/api/addons.html)
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build/Release
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# Dependency directories
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node_modules
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jspm_packages
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typings
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# Optional npm cache directory
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.npm
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# Optional REPL history
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.node_repl_history
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# Generated files
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client/app/**/*.js
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client/app/**/*.js.map
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# .NET compiled files
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bin
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obj

‎.vscode/launch.json

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{
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// Use IntelliSense to find out which attributes exist for C# debugging
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// Use hover for the description of the existing attributes
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// For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md
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"version": "0.2.0",
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"configurations": [
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{
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"name": ".NET Core Launch (web)",
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"type": "coreclr",
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"request": "launch",
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"preLaunchTask": "build",
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// If you have changed target frameworks, make sure to update the program path.
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"program": "${workspaceRoot}/bin/Debug/netcoreapp2.1/WebApi.dll",
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"args": [],
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"cwd": "${workspaceRoot}",
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"stopAtEntry": false,
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"internalConsoleOptions": "openOnSessionStart",
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"env": {
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"ASPNETCORE_ENVIRONMENT": "Development"
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},
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"sourceFileMap": {
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"/Views": "${workspaceRoot}/Views"
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}
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},
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{
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"name": ".NET Core Attach",
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"type": "coreclr",
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"request": "attach",
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"processId": "${command:pickProcess}"
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}
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]
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}

‎.vscode/tasks.json

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{
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"version": "0.1.0",
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"command": "dotnet",
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"isShellCommand": true,
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"args": [],
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"tasks": [
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{
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"taskName": "build",
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"args": [
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"${workspaceRoot}/WebApi.csproj"
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],
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"isBuildCommand": true,
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"problemMatcher": "$msCompile"
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}
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]
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}

‎Controllers/UsersController.cs

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using Microsoft.AspNetCore.Mvc;
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using Microsoft.AspNetCore.Authorization;
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using WebApi.Services;
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using WebApi.Entities;
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namespace WebApi.Controllers
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{
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[Authorize]
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[ApiController]
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[Route("[controller]")]
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public class UsersController : ControllerBase
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{
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private IUserService _userService;
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public UsersController(IUserService userService)
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{
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_userService = userService;
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}
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[AllowAnonymous]
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[HttpPost("authenticate")]
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public IActionResult Authenticate([FromBody]User userParam)
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{
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var user = _userService.Authenticate(userParam.Username, userParam.Password);
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if (user == null)
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return BadRequest(new { message = "Username or password is incorrect" });
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return Ok(user);
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}
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[HttpGet]
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public IActionResult GetAll()
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{
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var users = _userService.GetAll();
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return Ok(users);
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}
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}
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}

‎Entities/User.cs

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namespace WebApi.Entities
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{
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public class User
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{
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public int Id { get; set; }
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public string FirstName { get; set; }
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public string LastName { get; set; }
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public string Username { get; set; }
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public string Password { get; set; }
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public string Token { get; set; }
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}
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}

‎Helpers/AppSettings.cs

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namespace WebApi.Helpers
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{
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public class AppSettings
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{
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public string Secret { get; set; }
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}
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}

‎LICENSE

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The MIT License (MIT)
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Copyright (c) 2018 Jason Watmore
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.

‎Program.cs

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using System.IO;
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using Microsoft.AspNetCore;
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using Microsoft.AspNetCore.Hosting;
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namespace WebApi
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{
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public class Program
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{
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public static void Main(string[] args)
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{
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BuildWebHost(args).Run();
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}
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public static IWebHost BuildWebHost(string[] args) =>
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WebHost.CreateDefaultBuilder(args)
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.UseStartup<Startup>()
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.UseUrls("http://localhost:4000")
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.Build();
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}
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}

‎README.md

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# aspnet-core-jwt-authentication-api
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ASP.NET Core 2.1 - JWT Authentication API

‎Services/UserService.cs

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using System;
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using System.Collections.Generic;
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using System.IdentityModel.Tokens.Jwt;
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using System.Linq;
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using System.Security.Claims;
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using System.Text;
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using Microsoft.Extensions.Options;
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using Microsoft.IdentityModel.Tokens;
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using WebApi.Entities;
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using WebApi.Helpers;
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namespace WebApi.Services
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{
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public interface IUserService
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{
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User Authenticate(string username, string password);
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IEnumerable<User> GetAll();
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}
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public class UserService : IUserService
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{
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// users hardcoded for simplicity, store in a db with hashed passwords in production applications
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private List<User> _users = new List<User>
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{
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new User { Id = 1, FirstName = "Test", LastName = "User", Username = "test", Password = "test" }
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};
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private readonly AppSettings _appSettings;
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public UserService(IOptions<AppSettings> appSettings)
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{
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_appSettings = appSettings.Value;
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}
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public User Authenticate(string username, string password)
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{
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var user = _users.SingleOrDefault(x => x.Username == username && x.Password == password);
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// return null if user not found
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if (user == null)
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return null;
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// authentication successful so generate jwt token
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var tokenHandler = new JwtSecurityTokenHandler();
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var key = Encoding.ASCII.GetBytes(_appSettings.Secret);
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var tokenDescriptor = new SecurityTokenDescriptor
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{
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Subject = new ClaimsIdentity(new Claim[]
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{
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new Claim(ClaimTypes.Name, user.Id.ToString())
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}),
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Expires = DateTime.UtcNow.AddDays(7),
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SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(key), SecurityAlgorithms.HmacSha256Signature)
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};
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var token = tokenHandler.CreateToken(tokenDescriptor);
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user.Token = tokenHandler.WriteToken(token);
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// remove password before returning
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user.Password = null;
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return user;
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}
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public IEnumerable<User> GetAll()
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{
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// return users without passwords
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return _users.Select(x => {
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x.Password = null;
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return x;
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});
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}
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}
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}

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