// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Identity.ExternalClaims.Data;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.Extensions.Logging;
 
namespace Identity.ExternalClaims.Pages.Account.Manage;
 
public class Disable2faModel : PageModel
{
    private readonly UserManager<ApplicationUser> _userManager;
    private readonly ILogger<Disable2faModel> _logger;
 
    public Disable2faModel(
        UserManager<ApplicationUser> userManager,
        ILogger<Disable2faModel> logger)
    {
        _userManager = userManager;
        _logger = logger;
    }
 
    public async Task<IActionResult> OnGet()
    {
        var user = await _userManager.GetUserAsync(User);
        if (user == null)
        {
            throw new ApplicationException($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
        }
 
        if (!await _userManager.GetTwoFactorEnabledAsync(user))
        {
            throw new ApplicationException($"Cannot disable 2FA for user with ID '{_userManager.GetUserId(User)}' as it's not currently enabled.");
        }
 
        return Page();
    }
 
    public async Task<IActionResult> OnPostAsync()
    {
        var user = await _userManager.GetUserAsync(User);
        if (user == null)
        {
            throw new ApplicationException($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
        }
 
        var disable2faResult = await _userManager.SetTwoFactorEnabledAsync(user, false);
        if (!disable2faResult.Succeeded)
        {
            throw new ApplicationException($"Unexpected error occurred disabling 2FA for user with ID '{_userManager.GetUserId(User)}'.");
        }
 
        _logger.LogInformation("User with ID '{UserId}' has disabled 2fa.", _userManager.GetUserId(User));
 
        return RedirectToPage("./TwoFactorAuthentication");
    }
}