public async Task <ResultOrError <ExpenseModel> > Handle(AddExpenseParameters input)
{
if (!await _context.DoesExist <User>(input.UserId))
{
return(CommonErrors.UserNotExist);
}
if (input.ExpenseTypeId.HasValue && !await _context.DoesExist <ExpenseType>(input.ExpenseTypeId.Value))
{
return(ExpenseTypeNotExist);
}
Expense newExpense;
var aggregateId = input.AggregateId;
if (aggregateId.HasValue)
{
if (!await _context.ExpensesAggregates.AnyAsync(x => x.Id == input.AggregateId.Value))
{
return(CommonErrors.ExpenseAggregateNotFound);
}
}
else
{
var aggregate = ExpensesAggregate.Create(input.UserId, input.Name, input.AddedDate, isDraft: false);
await _context.ExpensesAggregates.AddAsync(aggregate);
aggregateId = aggregate.Id;
}
newExpense = Expense.Create(input.Name, input.Amount, aggregateId.Value, input.ExpenseTypeId);
await _context.Expenses.AddAsync(newExpense);
await _context.SaveChangesAsync();
return(newExpense.ToModel());
}