public void AddBill(int customerID, int amount, Borrow borrow)
{
using var context = new LibraryContext();
var bill = new Bill();
bill.CustumerID = customerID;
bill.BillDate = DateTime.Today;
bill.Amount = amount;
bill.borrow = borrow;
context.Bills.Add(bill);
context.SaveChanges();
}
public Customer GetCustomerByBorrow(Borrow borrow)
{
using var libraryContext = new LibraryContext();
var borrows = (from b in libraryContext.Borrows
where b.BorrowID == borrow.BorrowID
select b).First();
return((from c in libraryContext.Customers
join b in libraryContext.Borrows
on c.CustomerID equals b.CustomerID
where b.BorrowID == borrows.BorrowID
select c).FirstOrDefault());
}
public Borrow AddBorrow(int customerNumber, string bookTitle, DateTime borrowDate, DateTime returnDate)
{
using var libraryContext = new LibraryContext();
var customer = (from c in libraryContext.Customers
where c.CustomerNumber == customerNumber
select c).First();
var book = (from b in libraryContext.Books
where b.BookTitle == bookTitle
select b).First();
var borrow = new Borrow();
borrow.CustomerID = customer.CustomerID;
borrow.BookID = book.BookID;
borrow.BorrowDate = borrowDate;
borrow.ReturnDate = returnDate;
libraryContext.Borrows.Add(borrow);
libraryContext.SaveChanges();
return(borrow);
}
public Book AddBook(string iSBNNumber, string bookTitle, string author, int purchaseYear, int price, int condition, Shelf shelf,
bool isBorrowed, Borrow borrow)
{
using var libraryContext = new LibraryContext();
libraryContext.Borrows.Attach(borrow);
var book = new Book();
book.ISBNNumber = iSBNNumber;
book.BookTitle = bookTitle;
book.Author = author;
book.PurchaseYear = purchaseYear;
book.Condition = condition;
book.Price = price;
book.ShelfID = shelf.ShelfID;
book.IsBorrowed = isBorrowed;
book.Borrows.Add(borrow);
libraryContext.Books.Add(book);
libraryContext.SaveChanges();
return(book);
}
public void UpdateBorrowDate(Borrow borrow)
{
using var context = new LibraryContext();
borrow.DateOfBorrow = DateTime.Now;
context.SaveChanges();
}
