public async Task <Result> Handle(CreateBusinessCommand command, CancellationToken cancellationToken)
=> await _repository.FetchUserAggregate(command.OwnerEmail)
.FailureIf("User not found.")
.AndThen(user => user.UpdateRole(Role.Owner))
.AndThen(_ => _mapper.Map <Business>(command))
.Validate(_validator)
.Finally(business => _repository.AddAndSave(business));
public async Task <Result> Handle(GenerateTimeSlotsCommand command, CancellationToken cancellationToken)
=> await _repository.FetchUserAggregate(command.OwnerEmail)
.FailureIf("User not found.")
.Ensure(user => user.GetTimeSlotByDate(command.BusinessId, command.Start) == null,
"Time slots already generated for this date.", HttpCode.Conflict)
.AndThen(user => user.GetBusiness(command.BusinessId)?.GenerateTimeSlots(command.Start))
.Finally(timeSlots => _repository.AddAndSave(timeSlots.ToArray()));
public async Task <Result <TokenResponse> > Handle(RegisterCommand command, CancellationToken cancellationToken)
=> await _repository.FetchUserAggregate(command.Email)
.ToResult()
.Ensure(user => user == null, $"The email '{command.Email}' is already in use.")
.AndThen(_ => _mapper.Map <User>(command))
.Validate(_validator)
.AndThenF(async newUser => await _repository.AddAndSave(newUser))
.Finally(_mapper.Map <TokenResponse>);
public async Task <Result> Handle(CreateEmployeeCommand command, CancellationToken cancellationToken)
=> await _repository.FetchUserAggregate(command.OwnerEmail)
.FailureIf("Owner not found.")
.Ensure(user => user.Role != Role.Owner, "Owner cannot be employee.", HttpCode.Conflict)
.FailureIf(async _ => await _repository.FetchUserAggregate(command.UserId), "User not found.")
.AndThen(user => user.UpdateRole(Role.Employee))
.AndThen(_ => _mapper.Map <Employee>(command))
.Validate(_validator)
.Finally(employee => _repository.AddAndSave(employee));
public async Task <Result> Handle(CreateBookingCommand command, CancellationToken cancellationToken)
=> await _repository.FetchUserAggregate(command.UserId)
.FailureIf("User not found.")
.Ensure(user => !user.BookingExists(command.TimeSlotId),
"You already have a booking for this time slot.")
.FailureIf(async _ => await _repository.FetchTimeSlot(command.TimeSlotId), "Time Slot does not exist.")
.Ensure(timeSlot => timeSlot.Bookings.Count() < timeSlot.Capacity, "This time slot is full.")
.AndThen(_ => _mapper.Map <Booking>(command))
.Validate(_validator)
.Finally(booking => _repository.AddAndSave(booking));
public async Task <Result> Handle(SendMessageCommand command, CancellationToken cancellationToken)
=> await _repository.FetchUserAggregate(command.SenderId)
.ToResult()
.AndThen(async user =>
{
var business = await _repository.FetchBusiness(command.SenderId);
return(new { business, user });
})
.Ensure(entry => entry.user != null || entry.business != null, "Invalid sender.")
.AndThen(async _ =>
{
var user = await _repository.FetchUserAggregate(command.ReceiverId);
var business = await _repository.FetchBusiness(command.ReceiverId);
return(new { business, user });
})
.Ensure(entry => entry.user != null || entry.business != null, "Invalid receiver.")
.AndThen(_ => _mapper.Map <Message>(command))
.Validate(_validator)
.Finally(message => _repository.AddAndSave(message));