public async Task <Guid> HandleAsync(CreateMenu command)
{
var id = Guid.NewGuid();
// TODO: Check if the user owns the resource before any operation
// if(command.User.TenantId != menu.TenantId)
// {
// throw NotAuthorizedException()
// }
var newMenu = new Menu(
id: id,
name: command.Name,
tenantId: command.TenantId,
description: command.Description,
categories: null,
enabled: command.Enabled
);
await repository.SaveAsync(newMenu);
await applicationEventPublisher.PublishAsync(new MenuCreated(command, id));
return(id);
}
public async Task <bool> HandleAsync(DeleteMenu command)
{
var menu = await repository.GetByIdAsync(command.MenuId);
if (menu == null)
{
MenuDoesNotExistException.Raise(command, command.MenuId);
}
// TODO: Check if the user owns the resource before any operation
// if(command.User.TenantId != menu.TenantId)
// {
// throw NotAuthorizedException()
// }
var successful = await repository.DeleteAsync(command.MenuId);
if (!successful)
{
OperationFailedException.Raise(command, command.MenuId, "Unable to delete menu");
}
await applicationEventPublisher.PublishAsync(
new MenuDeleted(command, command.MenuId)
);
return(successful);
}
public async Task <ForgotPasswordCommandResult> Handle(ForgotPasswordCommand request,
CancellationToken cancellationToken)
{
var user = await _userManager.FindByEmailAsync(request.Email);
if (user == null)
{
return new ForgotPasswordCommandResult
{
IsSuccess = false,
Message = $"User {request.Email} not found."
}
}
;
var token = await _userManager.GeneratePasswordResetTokenAsync(user);
var encodedToken = Base64UrlEncoder.Encode(token);
_urlBuilder
.Create(_interactionOptions.UserInteractionEndpoints.BaseUrl)
.Path(_interactionOptions.UserInteractionEndpoints.ResetPassword)
.AddQuery("userId", user.Id)
.AddQuery("token", encodedToken)
.AddQuery("returnUrl", request.ReturnUrl);
var forgotPasswordRequestedEvent = new ForgotPasswordRequestedEvent
{
UserId = user.Id,
Url = _urlBuilder.ToString()
};
await _eventPublisher.PublishAsync(forgotPasswordRequestedEvent);
return(new ForgotPasswordCommandResult
{
Token = token,
IsSuccess = true
});
}
}
public async Task <RegisterUserCommandResult> Handle(RegisterUserCommand request,
CancellationToken cancellationToken)
{
if (!string.IsNullOrWhiteSpace(request.Token))
{
var validationResult = await _tokenValidator.ValidateAccessTokenAsync(request.Token);
if (validationResult.IsError)
{
throw new DomainException(validationResult.Error);
}
if (!validationResult.Client?.RedirectUris.Any(url =>
url.Equals(request.ReturnUrl, StringComparison.OrdinalIgnoreCase)) ?? true)
{
throw new DomainException($"Invalid return url: {request.ReturnUrl}");
}
}
else if (!string.IsNullOrWhiteSpace(request.ReturnUrl))
{
var context = await _interactionService.GetAuthorizationContextAsync(request.ReturnUrl);
if (context == null)
{
throw new DomainException("Invalid context");
}
}
var user = await _userService.GetByUsername(request.Email, cancellationToken);
if (user != null)
{
return new RegisterUserCommandResult
{
IsSuccess = false,
Errors = new List <string>
{
$"Email {request.Email} already exists."
}
}
}
;
user = new ApplicationUser
{
Id = Guid.NewGuid().ToString(),
Email = request.Email,
UserName = request.Email,
EmailConfirmed = !_options.RequireConfirmedEmail
};
var password = !string.IsNullOrWhiteSpace(request.PlainTextPassword)
? request.PlainTextPassword
: Guid.NewGuid().ToString().ToSha256();
var result = await _userManager.CreateAsync(user, password);
var token = await _userManager.GenerateEmailConfirmationTokenAsync(user);
var encodedToken = Base64UrlEncoder.Encode(token);
var response = new RegisterUserCommandResult
{
Id = result.Succeeded ? user.Id : string.Empty,
IsSuccess = result.Succeeded,
Errors = result.Errors.Select(e => e.Description)
};
if (!result.Succeeded)
{
return(response);
}
_urlBuilder
.Create(_interactionOptions.UserInteractionEndpoints.BaseUrl)
.Path(_interactionOptions.UserInteractionEndpoints.ConfirmUser)
.AddQuery("userId", user.Id)
.AddQuery("token", encodedToken)
.AddQuery("returnUrl", request.ReturnUrl);
var userRegisteredEvent = new UserRegisteredEvent
{
UserId = user.Id,
Url = _urlBuilder.ToString()
};
await _eventPublisher.PublishAsync(userRegisteredEvent);
return(response);
}
}
public async Task <TResult> HandleAsync(TCommand command)
{
TResult result = default(TResult);
var menu = await repository.GetByIdAsync(command.MenuId);
if (menu == null)
{
MenuDoesNotExistException.Raise(command, command.MenuId);
}
// TODO: Check if the user owns the resource before any operation
// if(command.User.TenantId != menu.TenantId)
// {
// throw NotAuthorizedException()
// }
try
{
result = await HandleCommandAsync(menu, command);
var issuccessful = await repository.SaveAsync(menu);
if (!issuccessful)
{
OperationFailedException.Raise(command, command.MenuId,
$"Unable to handle command {typeof(ICommand).Name}");
}
foreach (var appEvent in RaiseApplicationEvents(menu, command))
{
await applicationEventPublisher.PublishAsync(appEvent);
}
}
catch (DomainExceptionBase ex)
{
DomainRuleViolationException.Raise(command, command.MenuId, ex);
}
catch (ApplicationExceptionBase)
{
// TODO: handle applicaiton exception handling
// possible failures is missing data or information, validations, and so on
throw;
}
catch (InfrastructureExceptionBase)
{
//TODO: handle infrastructure exception handling
//possible failures is calling database, queue or any other dependency
throw;
}
catch (Exception ex)
{
//TODO: Enrich the exception details with context information to track in the logs
ex.Data["OperationCode"] = command.OperationCode;
ex.Data["CorrelationId"] = command.CorrelationId;
ex.Data["MenuId"] = command.MenuId;
throw;
}
return(result);
}