public string Add(Book book)
{
using (BookShoppeDBContext booksContext = new BookShoppeDBContext())
{
// Transaction Meathod Testing
using (DbContextTransaction dbTran = booksContext.Database.BeginTransaction())
{
try
{
if (book.UserID == 0)
{
return("User ID needed");
}
booksContext.Books.Add(book);
booksContext.SaveChanges();
dbTran.Commit();
}
catch (Exception)
{
dbTran.Rollback();
return(null);
}
}
}
return(null);
}
public void RemoveBookFormUserCart(int id)
{
using (BookShoppeDBContext _context = new BookShoppeDBContext())
{
CartBook cartBooks = _context.CartBooks.Where(cb => cb.BookID == id).SingleOrDefault();
_context.CartBooks.Remove(cartBooks);
_context.SaveChanges();
}
}
public void RemoveBookFormWishlist(int id)
{
using (BookShoppeDBContext _context = new BookShoppeDBContext())
{
WishList wishlist = _context.WishList.Where(w => w.BookID == id).SingleOrDefault();
_context.WishList.Remove(wishlist);
_context.SaveChanges();
}
}
public string Edit(Book book)
{
using (BookShoppeDBContext booksContext = new BookShoppeDBContext())
{
booksContext.Entry(book).State = EntityState.Modified;
booksContext.SaveChanges();
return(null);
}
}
public void Delete(int BookID)
{
using (BookShoppeDBContext bookContext = new BookShoppeDBContext())
{
Book book = bookContext.Books.Where(id => id.BookID == BookID).FirstOrDefault();
bookContext.Books.Remove(book);
bookContext.SaveChanges();
}
}
public string AddUser(User user)
{
BookShoppeDBContext _Context = new BookShoppeDBContext();
_Context.Users.Add(user);
_Context.SaveChanges();
return(null);
}
public bool Delete(int id)
{
using (var Context = new BookShoppeDBContext())
{
User user = Context.Users.Where(ID => ID.UserID == id).FirstOrDefault();
Context.Users.Remove(user);
Context.SaveChanges();
return(true);
}
}
public string DeleteLanguage(int id)
{
using (BookShoppeDBContext _context = new BookShoppeDBContext())
{
Language language = _context.Languages.Where(l => l.LanguageID == id).SingleOrDefault();
_context.Languages.Remove(language);
_context.SaveChanges();
return("Language Removed Successfully");
}
}
public string DeleteGenre(int id)
{
using (BookShoppeDBContext _context = new BookShoppeDBContext())
{
Genre genre = _context.Genres.Where(Id => Id.GenreID == id).FirstOrDefault();
_context.Genres.Remove(genre);
_context.SaveChanges();
return("Genre Removed Successfully");
}
}
public bool AddShipment(Shipment shipment)
{
using (BookShoppeDBContext _context = new BookShoppeDBContext())
{
Shipment _shipment = _context.Shipments.Where(s => s.Address == shipment.Address && s.UserID == shipment.UserID).FirstOrDefault();
if (_shipment == null)
{
_context.Shipments.Add(shipment);
_context.SaveChanges();
}
else if (_shipment.Address != shipment.Address && _shipment.UserID != shipment.UserID)
{
_context.Shipments.Add(shipment);
_context.SaveChanges();
}
_shipment = _context.Shipments.Where(s => s.Address == shipment.Address && s.UserID == shipment.UserID).SingleOrDefault();
return(PlaceOrder(_shipment));
}
}
public string AddToWishList(int userID, int bookID)
{
using (BookShoppeDBContext _context = new BookShoppeDBContext())
{
WishList wishlist = new WishList()
{
UserID = userID,
BookID = bookID
};
_context.WishList.Add(wishlist);
_context.SaveChanges();
return(null);
}
}
public string AddGenre(Genre genre)
{
using (BookShoppeDBContext _context = new BookShoppeDBContext())
{
_context.Genres.Add(genre);
try
{
_context.SaveChanges();
}
catch (DbUpdateException e)
{
return(e.Message);
}
return(null);
}
}
public bool PlaceOrder(Shipment shipment)
{
using (BookShoppeDBContext _context = new BookShoppeDBContext())
{
Order order = new Order();
order.ShipmentID = shipment.ShipmentID;
Cart cart = _context.Carts.Where(c => c.UserID == shipment.UserID && c.IsOrdered == false).SingleOrDefault();
order.CartID = cart.CartID;
_context.Orders.Add(order);
cart.IsOrdered = true;
_context.SaveChanges();
return(true);
}
}
public string AddLanguage(Language language)
{
using (BookShoppeDBContext _context = new BookShoppeDBContext())
{
_context.Languages.Add(language);
try
{
_context.SaveChanges();
}
catch (Exception e)
{
return(e.Message);
}
return(null);
}
}
public string EditUser(User user)
{
BookShoppeDBContext _context = new BookShoppeDBContext();
_context.Entry(user).State = System.Data.Entity.EntityState.Modified;
try
{
_context.SaveChanges();
}
catch (DbUpdateException e)
{
if (e.InnerException.InnerException.Message != null)
{
return("The User Name should not be duplicated");
}
else
{
return("Please fill out the form correctly and sumbit your values");
}
}
return(null);
}
// Such a complex coding - to check the cart exist in the orders table and which cart is not in the order then the book is added in the cart
// if the user dont have any cart then it create a new cart and add the book
// if the user has only one cart in orders then it creates new cart and add the book in the cart
public int AddToCart(int userID, int bookID)
{
using (BookShoppeDBContext _context = new BookShoppeDBContext())
{
List <Cart> user_carts = _context.Carts.Where(c => c.UserID == userID).ToList();
Cart _cart = new Cart();
int no_of_carts = user_carts.Count();
if (no_of_carts == 2) // When User Has Two Carts Probably One In Orders Another One For New Add To Carts
{
Cart cartOne = user_carts.ElementAt(0);
Cart cartTwo = user_carts.ElementAt(1);
if (cartOne.IsOrdered == false) // Check Wheather The First One Is Not In Orders To Add The New Book
{
CartBook cartbooks = new CartBook()
{
CartID = cartOne.CartID,
BookID = bookID,
};
// Get Book Into Object And Add The Book Rate Into The Cart Rate
Book book = _context.Books.Where(b => b.BookID == bookID).SingleOrDefault();
cartOne.CartRate = cartOne.CartRate + book.Price;
_context.CartBooks.Add(cartbooks);
_context.SaveChanges();
return(cartOne.CartID);
}
else if (cartTwo.IsOrdered == false) //Or Else Check Wheather The First Ssecond Is Not In Orders To Add The New Book
{
CartBook cartbooks = new CartBook()
{
CartID = cartTwo.CartID,
BookID = bookID,
};
// Get Book Into Object And Add The Book Rate Into The Cart Rate
Book book = _context.Books.Where(b => b.BookID == bookID).SingleOrDefault();
cartOne.CartRate = cartOne.CartRate + book.Price;
_context.CartBooks.Add(cartbooks);
_context.SaveChanges();
return(cartTwo.CartID);
}
}
else if (no_of_carts == 1) // When The User Has One Cart That May Be In Orders Or In Carts To Add New Books
{
Cart cart = user_carts.ElementAt(0);
if (cart.IsOrdered == false) // Check If the Cart Is Not Added Into the Orders
{
CartBook cartbooks = new CartBook()
{
CartID = cart.CartID,
BookID = bookID,
};
// Get Book Into Object And Add The Book Rate Into The Cart Rate
Book book = _context.Books.Where(b => b.BookID == bookID).SingleOrDefault();
cart.CartRate = cart.CartRate + book.Price;
_context.CartBooks.Add(cartbooks);
_context.SaveChanges();
return(cart.CartID);
}
else if (cart.IsOrdered != false)// Check If The Cart Is Already Added In To The Orders
{
// Create A New Cart For The User
Cart new_cart = new Cart()
{
UserID = userID,
};
_context.Carts.Add(new_cart);
_context.SaveChanges();
_cart = GetCartNotInOrder(userID);
if (_cart != null)
{
CartBook cartbooks = new CartBook()
{
CartID = _cart.CartID,
BookID = bookID,
};
// Get Book Into Object And Add The Book Rate Into The Cart Rate
Book book = _context.Books.Where(b => b.BookID == bookID).SingleOrDefault();
_cart.CartRate = _cart.CartRate + book.Price;
_context.CartBooks.Add(cartbooks);
_context.SaveChanges();
return(_cart.CartID);
}
}
}
else if (no_of_carts == 0) // Wheather The User Has No Carts
{
// Create A New Cart For The User
Cart cart = new Cart()
{
UserID = userID,
};
_context.Carts.Add(cart);
_context.SaveChanges();
cart = GetCartNotInOrder(userID);
using (var dbContextTransaction = _context.Database.BeginTransaction())
{
CartBook cartbook = new CartBook()
{
CartID = cart.CartID,
BookID = bookID,
};
_context.CartBooks.Add(cartbook);
// Get Book Into Object And Add The Book Rate Into The Cart Rate
Book book = _context.Books.Where(b => b.BookID == bookID).SingleOrDefault();
cart.CartRate = book.Price + cart.CartRate;
_context.SaveChanges();
dbContextTransaction.Commit();
return(cart.CartID);
}
}
//foreach (Cart cart in user_carts)
//{
// // Order order = _context.Orders.Where(o => o.CartID == cart.CartID).SingleOrDefault();
// if (cart.IsOrdered == false) // The Current Cart Is Not In The Orders Table
// {
// CartBook cartbooks = new CartBook()
// {
// CartID = cart.CartID,
// BookID = bookID,
// };
// // Get Book Into Object And Add The Book Rate Into The Cart Rate
// Book book = _context.Books.Where(b => b.BookID == bookID).SingleOrDefault();
// cart.CartRate = book.Price + cart.CartRate;
// _context.CartBooks.Add(cartbooks);
// _context.SaveChanges();
// return cart.CartID;
// }
// else if (cart.IsOrdered != false) // The Cart Is Already Added In The Orders
// {
// Cart new_cart = new Cart()
// {
// UserID = userID,
// };
// _context.Carts.Add(new_cart);
// _context.SaveChanges();
// _cart = GetCartNotInOrder(userID);
// if (_cart!=null)
// {
// CartBook cartbooks = new CartBook()
// {
// CartID = _cart.CartID,
// BookID = bookID,
// };
// _context.CartBooks.Add(cartbooks);
// _context.SaveChanges();
// return cart.CartID;
// }
// }
//}
//if (user_carts.Count==0)
//{
// Cart cart = new Cart()
// {
// UserID = userID,
// };
// _context.Carts.Add(cart);
// _context.SaveChanges();
// _cart = GetCartNotInOrder(userID);
// CartBook cartbook = new CartBook()
// {
// CartID = _cart.CartID,
// BookID = bookID,
// };
// _context.CartBooks.Add(cartbook);
// _context.SaveChanges();
// return cart.CartID;
//}
return(0);
}
}