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namespace IOL.GreatOffice.Api.Services;
public class EmailValidationService
{
private readonly IStringLocalizer<SharedResources> _localizer;
private readonly MainAppDatabase _database;
private readonly MailService _mailService;
private readonly ILogger<EmailValidationService> _logger;
private readonly string EmailValidationUrl;
public EmailValidationService(IStringLocalizer<SharedResources> localizer, MainAppDatabase database, MailService mailService, ILogger<EmailValidationService> logger)
{
_localizer = localizer;
_database = database;
_mailService = mailService;
_logger = logger;
EmailValidationUrl = Program.AppConfiguration.CANONICAL_BACKEND_URL + "/_/validate";
}
public bool FulfillEmailValidationRequest(Guid id, Guid userId)
{
var item = _database.ValidationEmails.FirstOrDefault(c => c.Id == id);
if (item == default)
{
_logger.LogDebug("Did not find email validation request with id: {requestId}", id);
return false;
}
if (item.UserId != userId)
{
_logger.LogInformation("An unknown user tried to validate the email validation request {requestId}", id);
return false;
}
var user = _database.Users.FirstOrDefault(c => c.Id == item.UserId);
if (user == default)
{
_database.ValidationEmails.Remove(item);
_database.SaveChanges();
_logger.LogInformation("Deleting request {requestId} because user does not exist anymore", id);
return false;
}
user.EmailLastValidated = AppDateTime.UtcNow;
_database.ValidationEmails.Remove(item);
_database.Users.Update(user);
_database.SaveChanges();
_logger.LogInformation("Successfully validated the email for user {userId}", user.Id);
return true;
}
public async Task SendValidationEmailAsync(User user)
{
var queueItem = new ValidationEmail()
{
UserId = user.Id,
Id = Guid.NewGuid()
};
var email = new MailService.PostmarkEmail()
{
To = user.Username,
Subject = _localizer["Greatoffice Email Validation"],
TextBody = _localizer["""
Hello {0},
Validate your email address by opening this link in a browser {1}
""", user.DisplayName(true), EmailValidationUrl + "?id=" + queueItem.Id]
};
queueItem.EmailSentAt = AppDateTime.UtcNow;
_database.ValidationEmails.Add(queueItem);
await _database.SaveChangesAsync();
await Task.Run(async () => await _mailService.SendMailAsync(email));
}
}
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