public LoanViewModel NewLoan(int?tomeId)
{
if (tomeId == null)
{
return(null);
}
Tome tome = _context.Tomes
.Include(l => l.Book)
.Include(l => l.Loans)
.FirstOrDefault(l => l.Id == tomeId);
LoanViewModel loan = new LoanViewModel {
Tome = tome
};
loan.LoanFirstDay = DateTime.Today;
loan.LoanLastDay = loan.LoanFirstDay + TimeSpan.FromDays(7);
return(loan);
}
public async Task <Boolean> SaveLoanAsync(int?tomeId, string userName, LoanViewModel loan)
{
if (tomeId == null || loan == null)
{
return(false);
}
if (!Validator.TryValidateObject(loan, new ValidationContext(loan, null, null), null))
{
return(false);
}
if (_loanDateValidator.Validate(loan.LoanFirstDay, loan.LoanLastDay, tomeId.Value) != LoanDateError.None)
{
return(false);
}
Guest guest = await _userManager.FindByNameAsync(userName);
if (guest == null)
{
return(false);
}
_context.Loans.Add(new Loan
{
TomeId = loan.Tome.Id,
UserId = guest.Id,
FirstDay = loan.LoanFirstDay,
LastDay = loan.LoanLastDay,
IsActive = false //a kölcsönzést egy könyvtárosnak kell aktívvá tennie
});
//Debug.WriteLine("tomeid: " + tomeId);
//Debug.WriteLine("numberofloans: " + _context.Books.Include(b => b.Tomes).FirstOrDefault(b => b.Id == loan.Tome.BookId).NumberOfLoans);
/*foreach(var tome in _context.Tomes)
* {
* if (tome.Id == loan.Tome.Id) //ha erre a kötetre volt a kölcsönzés
* {
* var book = _context.Books.FirstOrDefault(b => b.Id == tome.BookId);
* book.NumberOfLoans += 1;
* }
* }*/
var book = _context.Books.FirstOrDefault(b => b.Id == loan.Tome.BookId);
book.NumberOfLoans += 1;
//Debug.WriteLine("numberofloans: " + _context.Books.FirstOrDefault(b => b.Id == loan.Tome.Id).NumberOfLoans);
try
{
_context.SaveChanges();
}
catch (Exception)
{
return(false);
}
return(true);
}
