public static int BorrowExtendsCount(BorrowedBook borrowedBook)
{
string command = "SELECT ilosc_przedluzen FROM zamowienia WHERE id_zamowienia = " + borrowedBook.Id;
int count = Convert.ToInt32(DoScalar(command));
return(count);
}
private void BtnExtendEvent(object sender, RoutedEventArgs e)
{
MainWindow mainWindow = Window.GetWindow(this) as MainWindow;
if (DatabaseManager.user == null)
{
mainWindow.ShowLoginPage();
return;
}
BorrowedBook borrowedBook = ((FrameworkElement)sender).DataContext as BorrowedBook;
if (!DatabaseManager.IsBorrowAccepted(borrowedBook))
{
return;
}
if (DatabaseManager.IsBorrowReturned(borrowedBook))
{
return;
}
if (DatabaseManager.BorrowExtendsCount(borrowedBook) >= 2)
{
return;
}
DatabaseManager.ExtendBorrow(borrowedBook);
UpdateBorrows();
}
public static bool IsBorrowReturned(BorrowedBook borrowedBook)
{
string command = "SELECT termin_oddania FROM zamowienia WHERE id_zamowienia = " + borrowedBook.Id;
Nullable <DateTime> dataOddania = DoScalar(command) as Nullable <DateTime>;
return(dataOddania != null);
}
public static void ExtendBorrow(BorrowedBook borrowedBook)
{
List <string> commands = new List <string>();
String date = DateTime.Now.ToString("yy-MM-dd");
commands.Add(
"UPDATE zamowienia SET ilosc_przedluzen = ilosc_przedluzen + 1 WHERE id_zamowienia = " + borrowedBook.Id
);
commands.Add(
"INSERT INTO logi (id_uzytkownik, operacja, data_wykonania)" +
" VALUES (" + borrowedBook.IdUser + ", 'przedluzenie id_zamowienia = " + borrowedBook.Id + "', '" + date + "')"
);
DoTransaction(commands);
}
public static void AcceptBorrow(BorrowedBook borrowedBook)
{
List <string> commands = new List <string>();
String date = DateTime.Now.ToString("yy-MM-dd");
commands.Add(
"UPDATE zamowienia SET termin_odbioru = '" + date + "' WHERE id_zamowienia = " + borrowedBook.Id
);
commands.Add(
"INSERT INTO logi (id_uzytkownik, operacja, data_wykonania)" +
" VALUES (" + borrowedBook.IdUser + ", 'odebranie id_zamowienia = " + borrowedBook.Id + "', '" + date + "')"
);
DoTransaction(commands);
}
public static void ReturnBorrow(BorrowedBook borrowedBook)
{
List <string> commands = new List <string>();
String date = DateTime.Now.ToString("yy-MM-dd");
commands.Add(
"UPDATE zamowienia SET termin_oddania = '" + date + "' WHERE id_zamowienia = " + borrowedBook.Id
);
commands.Add(
"UPDATE stan_ksiazek SET ilosc_dostepna = ilosc_dostepna + 1 WHERE id_ksiazka = " + borrowedBook.IdBook
);
commands.Add(
"INSERT INTO logi (id_uzytkownik, operacja, data_wykonania)" +
" VALUES (" + borrowedBook.IdUser + ", 'oddanie id_zamowienia = " + borrowedBook.Id + "', '" + date + "')"
);
DoTransaction(commands);
}
public static List <BorrowedBook> GetBorrowedBooks(User user1, int page, int count)
{
string command = "SELECT z.id_zamowienia, z. id_uzytkownik, z.id_ksiazka, k.autor, k.tytul, z.termin_wypozyczenia, z.termin_odbioru, z.termin_oddania, z.ilosc_przedluzen " +
"FROM zamowienia z, ksiazki k WHERE z.id_uzytkownik = " + user1.Id +
" AND z.id_ksiazka = k.id_ksiazka ORDER BY termin_wypozyczenia" +
" OFFSET " + (page * count) + " ROW FETCH NEXT " + count + " ROWS ONLY";
DataTable dt = GetDataTable(command);
List <BorrowedBook> borrowedBooks = new List <BorrowedBook>();
foreach (DataRow row in dt.Rows)
{
BorrowedBook borrowedBook = new BorrowedBook();
borrowedBook.Id = row["id_zamowienia"] as Nullable <decimal>;
borrowedBook.IdUser = row["id_uzytkownik"] as Nullable <decimal>;
borrowedBook.IdBook = row["id_ksiazka"] as Nullable <decimal>;
borrowedBook.Autor = row["autor"] as string;
borrowedBook.Tytul = row["tytul"] as string;
Nullable <DateTime> dataWypozyczenia = row["termin_wypozyczenia"] as Nullable <DateTime>;
borrowedBook.DataWypozyczenia = dataWypozyczenia == null ? null : dataWypozyczenia.Value.ToString("dd-MM-yyyy");
Nullable <DateTime> dataOdbioru = row["termin_odbioru"] as Nullable <DateTime>;
borrowedBook.DataOdbioru = dataOdbioru == null ? null : dataOdbioru.Value.ToString("dd-MM-yyyy");
Nullable <DateTime> dataOddania = row["termin_oddania"] as Nullable <DateTime>;
borrowedBook.DataOddania = dataOddania == null ? null : dataOddania.Value.ToString("dd-MM-yyyy");
borrowedBook.IloscPrzedluzen = row["ilosc_przedluzen"] as Nullable <decimal>;
borrowedBooks.Add(borrowedBook);
}
return(borrowedBooks);
}
