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https://github.com/morbalint/kemkas-backend.git
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initial
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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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#nullable disable
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using System;
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using System.Collections.Generic;
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using System.ComponentModel.DataAnnotations;
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using System.Linq;
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using System.Text;
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using System.Text.Encodings.Web;
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using System.Threading;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Authentication;
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using Microsoft.AspNetCore.Authorization;
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using Kemkas.Web.Db.Models;
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using Microsoft.AspNetCore.Identity;
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using Microsoft.AspNetCore.Identity.UI.Services;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.AspNetCore.Mvc.RazorPages;
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using Microsoft.AspNetCore.WebUtilities;
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using Microsoft.Extensions.Logging;
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namespace Kemkas.Web.Areas.Identity.Pages.Account
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{
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public class RegisterModel : PageModel
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{
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private readonly SignInManager<ApplicationUser> _signInManager;
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private readonly UserManager<ApplicationUser> _userManager;
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private readonly IUserStore<ApplicationUser> _userStore;
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private readonly IUserEmailStore<ApplicationUser> _emailStore;
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private readonly ILogger<RegisterModel> _logger;
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private readonly IEmailSender _emailSender;
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private readonly IWebHostEnvironment _environment;
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public RegisterModel(
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UserManager<ApplicationUser> userManager,
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IUserStore<ApplicationUser> userStore,
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SignInManager<ApplicationUser> signInManager,
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ILogger<RegisterModel> logger,
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IEmailSender emailSender,
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IWebHostEnvironment environment)
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{
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_userManager = userManager;
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_userStore = userStore;
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_emailStore = GetEmailStore();
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_signInManager = signInManager;
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_logger = logger;
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_emailSender = emailSender;
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_environment = environment;
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}
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/// <summary>
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/// This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
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/// directly from your code. This API may change or be removed in future releases.
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/// </summary>
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[BindProperty]
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public InputModel Input { get; set; }
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/// <summary>
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/// This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
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/// directly from your code. This API may change or be removed in future releases.
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/// </summary>
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public string ReturnUrl { get; set; }
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/// <summary>
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/// This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
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/// directly from your code. This API may change or be removed in future releases.
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/// </summary>
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public IList<AuthenticationScheme> ExternalLogins { get; set; }
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/// <summary>
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/// This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
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/// directly from your code. This API may change or be removed in future releases.
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/// </summary>
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public class InputModel
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{
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/// <summary>
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/// This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
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/// directly from your code. This API may change or be removed in future releases.
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/// </summary>
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[Required]
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[EmailAddress]
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[Display(Name = "Email")]
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public string Email { get; set; }
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/// <summary>
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/// This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
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/// directly from your code. This API may change or be removed in future releases.
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/// </summary>
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[Required]
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[StringLength(100, ErrorMessage = "The {0} must be at least {2} and at max {1} characters long.", MinimumLength = 6)]
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[DataType(DataType.Password)]
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[Display(Name = "Password")]
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public string Password { get; set; }
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/// <summary>
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/// This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
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/// directly from your code. This API may change or be removed in future releases.
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/// </summary>
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[DataType(DataType.Password)]
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[Display(Name = "Confirm password")]
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[Compare("Password", ErrorMessage = "The password and confirmation password do not match.")]
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public string ConfirmPassword { get; set; }
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}
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public async Task OnGetAsync(string returnUrl = null)
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{
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ReturnUrl = returnUrl;
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ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
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// Disable not yet approved external login providers in production
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if (!_environment.IsDevelopment())
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{
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ExternalLogins = ExternalLogins.Where(el => el.Name == "Discord").ToList();
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}
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}
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public async Task<IActionResult> OnPostAsync(string returnUrl = null)
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{
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returnUrl ??= Url.Content("~/");
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ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
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// Disable not yet approved external login providers in production
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if (!_environment.IsDevelopment())
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{
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ExternalLogins = ExternalLogins.Where(el => el.Name == "Discord").ToList();
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}
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if (!ModelState.IsValid)
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{
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return Page();
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}
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var user = CreateUser();
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await _userStore.SetUserNameAsync(user, Input.Email, CancellationToken.None);
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await _emailStore.SetEmailAsync(user, Input.Email, CancellationToken.None);
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var result = await _userManager.CreateAsync(user, Input.Password);
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if (!result.Succeeded)
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{
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foreach (var error in result.Errors)
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{
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ModelState.AddModelError(string.Empty, error.Description);
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}
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return Page();
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}
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_logger.LogInformation("User created a new account with password.");
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var userId = await _userManager.GetUserIdAsync(user);
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var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
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code = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
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var callbackUrl = Url.Page(
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"/Account/ConfirmEmail",
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pageHandler: null,
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values: new { area = "Identity", userId = userId, code = code, returnUrl = returnUrl },
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protocol: Request.Scheme);
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try
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{
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await _emailSender.SendEmailAsync(Input.Email, "Confirm your email",
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$"Please confirm your account by <a href='{HtmlEncoder.Default.Encode(callbackUrl)}'>clicking here</a>.");
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}
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catch
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{
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await _userManager.DeleteAsync(user); // Delete user to free up the email address for a second registration.
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ModelState.AddModelError("Input.Email", "Failed to send account confirmation email!");
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return Page();
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}
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if (_userManager.Options.SignIn.RequireConfirmedAccount)
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{
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return RedirectToPage("RegisterConfirmation",
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new { email = Input.Email, returnUrl = returnUrl });
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}
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await _signInManager.SignInAsync(user, isPersistent: false);
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return LocalRedirect(returnUrl);
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}
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private ApplicationUser CreateUser()
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{
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try
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{
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return Activator.CreateInstance<ApplicationUser>();
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}
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catch
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{
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throw new InvalidOperationException($"Can't create an instance of '{nameof(ApplicationUser)}'. " +
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$"Ensure that '{nameof(ApplicationUser)}' is not an abstract class and has a parameterless constructor, or alternatively " +
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$"override the register page in /Areas/Identity/Pages/Account/Register.cshtml");
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}
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}
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private IUserEmailStore<ApplicationUser> GetEmailStore()
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{
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if (!_userManager.SupportsUserEmail)
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{
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throw new NotSupportedException("The default UI requires a user store with email support.");
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}
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return (IUserEmailStore<ApplicationUser>)_userStore;
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}
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}
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}
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