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namespace IOL.GreatOffice.Api.Services;
public class PasswordResetService
{
private readonly MainAppDatabase _database;
private readonly MailService _mailService;
private readonly ILogger<PasswordResetService> _logger;
private readonly IStringLocalizer<SharedResources> _localizer;
public PasswordResetService(
MainAppDatabase database,
ILogger<PasswordResetService> logger,
MailService mailService, IStringLocalizer<SharedResources> localizer)
{
_database = database;
_logger = logger;
_mailService = mailService;
_localizer = localizer;
}
public async Task<PasswordResetRequest> GetRequestAsync(Guid id, CancellationToken cancellationToken = default)
{
var request = await _database.PasswordResetRequests
.Include(c => c.User)
.FirstOrDefaultAsync(c => c.Id == id, cancellationToken);
if (request == default)
{
return default;
}
_logger.LogInformation($"Found password reset request for user: {request.User.Username}, expires at {request.ExpirationDate} (in {request.ExpirationDate.Subtract(AppDateTime.UtcNow).Minutes} minutes).");
return request;
}
public async Task<FulfillPasswordResetRequestResult> FulfillRequestAsync(Guid id, string newPassword, CancellationToken cancellationToken = default)
{
var request = await GetRequestAsync(id, cancellationToken);
if (request == default) return FulfillPasswordResetRequestResult.REQUEST_NOT_FOUND;
var user = _database.Users.FirstOrDefault(c => c.Id == request.User.Id);
if (user == default) return FulfillPasswordResetRequestResult.USER_NOT_FOUND;
user.HashAndSetPassword(newPassword);
_database.Users.Update(user);
await _database.SaveChangesAsync(cancellationToken);
_logger.LogInformation($"Fullfilled password reset request for user: {request.User.Username}");
await DeleteRequestsForUserAsync(user.Id, cancellationToken);
return FulfillPasswordResetRequestResult.FULFILLED;
}
public async Task AddRequestAsync(User user, TimeZoneInfo requestTz, CancellationToken cancellationToken = default)
{
await DeleteRequestsForUserAsync(user.Id, cancellationToken);
var request = new PasswordResetRequest(user);
_database.PasswordResetRequests.Add(request);
await _database.SaveChangesAsync(cancellationToken);
var zonedExpirationDate = TimeZoneInfo.ConvertTimeBySystemTimeZoneId(request.ExpirationDate, requestTz.Id);
var message = new MailService.PostmarkEmail()
{
To = request.User.Username,
Subject = _localizer["Reset password - Greatoffice"],
TextBody = _localizer["""
Hi {0},
Go to the following link to set a new password.
{1}/reset-password/{2}
The link expires at {3}.
If you did not request a password reset, no action is required.
""", user.DisplayName(true), Program.AppConfiguration.CANONICAL_FRONTEND_URL, request.Id, zonedExpirationDate.ToString("yyyy-MM-dd hh:mm")]
};
await Task.Run(() =>
{
_mailService.SendMailAsync(message).ConfigureAwait(false);
_logger.LogInformation($"Added password reset request for user: {request.User.Username}, expires in {request.ExpirationDate.Subtract(AppDateTime.UtcNow)}.");
},
cancellationToken).ConfigureAwait(false);
}
public async Task DeleteRequestsForUserAsync(Guid userId, CancellationToken cancellationToken = default)
{
var requestsToRemove = _database.PasswordResetRequests.Where(c => c.UserId == userId).ToList();
if (!requestsToRemove.Any()) return;
_database.PasswordResetRequests.RemoveRange(requestsToRemove);
await _database.SaveChangesAsync(cancellationToken);
_logger.LogInformation($"Deleted {requestsToRemove.Count} password reset requests for user: {userId}.");
}
public async Task DeleteStaleRequestsAsync(CancellationToken cancellationToken = default)
{
var deleteCount = 0;
foreach (var request in _database.PasswordResetRequests.Where(c => c.IsExpired))
{
if (!request.IsExpired)
{
continue;
}
_database.PasswordResetRequests.Remove(request);
deleteCount++;
_logger.LogInformation($"Marking password reset request with id: {request.Id} for deletion, expiration date was {request.ExpirationDate}.");
}
await _database.SaveChangesAsync(cancellationToken);
_logger.LogInformation($"Deleted {deleteCount} stale password reset requests.");
}
}
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