/**@brief getAllUserPurchases() function
*
* @param int userID
*/
public List <ItemToPurchaseClass> getAllUserPurchases(int userID)
{
try
{
DatabaseHelperClass dbHelper = DatabaseHelperClass.Instance; //SINGLETON PATTERN
SqlConnection connection = dbHelper.getConnection();
SqlCommand command = new SqlCommand("SELECT * FROM ShoppingCartTable WHERE customerid=@id", connection);
command.Parameters.AddWithValue("@id", userID);
List <ItemToPurchaseClass> list = new List <ItemToPurchaseClass>();
SqlDataReader readShoppingCart = command.ExecuteReader();
if (readShoppingCart != null)
{
while (readShoppingCart.Read())
{
ItemToPurchaseClass item = new ItemToPurchaseClass();
ProductClass book = new BookClass();
item.product = book;
item.product.id = readShoppingCart["itemid"].ToString();
item.quantity = Convert.ToInt32(readShoppingCart["quantity"]);
item.product.price = Convert.ToDouble(readShoppingCart["paymentamount"]);
item.product.name = readShoppingCart["name"].ToString();
item.product.cover_page_picture = readShoppingCart["picture"].ToString();
list.Add(item);
}
}
return(list);
}
catch (Exception e)
{
FileWriterClass.WriteFile(AppConstants.EXCEPTION_LOG_FILE_LOCATION, "Exception at getAllUserPurchases function" + e.Message);
Console.WriteLine("Click {0}", e.Message);
return(null);
}
}
public List <ItemToPurchaseClass> getMostBoughtItems(string itemtype)
{
try
{
DatabaseHelperClass dbHelper = DatabaseHelperClass.Instance; //SINGLETON PATTERN
SqlConnection connection = dbHelper.getConnection();
SqlCommand command = new SqlCommand("SELECT S.itemid,S.picture,S.name,S.paymentamount,SUM(S.quantity) AS totalquantity FROM ShoppingCartTable S WHERE S.itemtype = @itemtype GROUP BY S.itemid, S.picture, S.name, S.paymentamount Order by totalquantity desc", connection);
command.Parameters.AddWithValue("@itemtype", itemtype);
List <ItemToPurchaseClass> list = new List <ItemToPurchaseClass>();
SqlDataReader readShoppingCart = command.ExecuteReader();
if (readShoppingCart != null)
{
while (readShoppingCart.Read())
{
ItemToPurchaseClass item = new ItemToPurchaseClass();
ProductClass book = new BookClass();
item.product = book;
item.product.id = readShoppingCart["itemid"].ToString();
item.quantity = Convert.ToInt32(readShoppingCart["totalquantity"]);
item.product.price = Convert.ToDouble(readShoppingCart["paymentamount"]);
item.product.name = readShoppingCart["name"].ToString();
item.product.cover_page_picture = readShoppingCart["picture"].ToString();
list.Add(item);
}
}
return(list);
}
catch (Exception e)
{
FileWriterClass.WriteFile(AppConstants.EXCEPTION_LOG_FILE_LOCATION, "Exception at getMostBoughtItems function" + e.Message);
Console.WriteLine("Click {0}", e.Message);
return(null);
}
}
/**
* A list of allbooks in the book class' getAllBooksFromDB() function is created.
* bookUserControlsis created from the BookUserControl class.
* The size of bookusercontrols is up to the length of allbooks.
*/
private void populateBooksViewInHomePage()
{
List <BookClass> allBooks = BookClass.getAllBooksFromDB();
BookUserControl[] bookUserControls = new BookUserControl[allBooks.Count];
if (flpHomePage.Controls.Count > 0)
{
flpHomePage.Controls.Clear();
}
int i = 0;
foreach (var item in allBooks)
{
bookUserControls[i] = new BookUserControl();
bookUserControls[i].bookID = item.id;
bookUserControls[i].bookName = item.name;
bookUserControls[i].bookAuthor = item.author;
bookUserControls[i].bookPrice = item.price;
bookUserControls[i].stock = item.stock;
bookUserControls[i].cover_page_picture = item.cover_page_picture;
flpHomePage.Controls.Add(bookUserControls[i]);
i++;
}
}
private void pbHomePage_Click(object sender, EventArgs e)
{
tabControlGeneral.SelectedTab = tabHomePage;
lblNavigator.Text = "Home Page";
BookClass book = new BookClass();
book.printProperties();
}
/**this function read book item in database
* and assign bookclass parameter(id,name,price,stock,author,publisher,isbn,page,cover_page_picture)
* @param string id
* @return book
*/
public static BookClass getaBooksFromDBByID(string id)
{
DatabaseHelperClass dbHelper = DatabaseHelperClass.Instance; //SINGLETON PATTERN
BookClass book = new BookClass();
book = dbHelper.getABookFromDBByID(id);
return(book);
}
/** @ brief adds the purchased book to the shopping cart
* create a book from BookClass
* and item added shoppingcartclass
*/
private void btnBookAddToCart_Click(object sender, EventArgs e)
{
BookClass book = new BookClass();
book = BookClass.getaBooksFromDBByID(bookID);
ShoppingCartClass.addProduct(new ItemToPurchaseClass(book, Convert.ToInt32(Math.Round(nudQuantity.Value, 0))));
System.Windows.Forms.Form f = System.Windows.Forms.Application.OpenForms["BookShopForm"];
int quantity = 0;
foreach (var item in ShoppingCartClass.itemsToPurchase)
{
quantity += item.quantity;
}
((BookShopForm)f).lblShoppinCartValue.Text = quantity.ToString();
MessageBox.Show("Added to cart.", "INFORMATION", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
private void btnUpdateBook_Click(object sender, EventArgs e)
{
BookClass book = new BookClass(txtBookName.Text, txtBookId.Text, Convert.ToDouble(txtBookPrice.Text), Convert.ToInt32(txtBookStock.Text), txtBookIsbn.Text, txtBookAuthor.Text, txtBookPublisher.Text, Convert.ToInt32(txtBookPage.Text), txtBookImage.Text);
//bool affected = dbHelper.updateAProductAtDB(book);
AdminUserClass adminOps = AdminUserClass.Instance;
bool affected = adminOps.updateProduct(book);
if (!affected)
{
MessageBox.Show("Error not successful");
}
else
{
MessageBox.Show("Book updated successfully", "INFORMATION", MessageBoxButtons.OK, MessageBoxIcon.Information);
clearBookControls();
}
}
public List <BookClass> getAllBooksFromDB()
{
try
{
List <BookClass> books = new List <BookClass>();
DatabaseHelperClass dbHelper = DatabaseHelperClass.Instance; //SINGLETON PATTERN
SqlConnection connection = dbHelper.getConnection();
SqlCommand command = new SqlCommand("SELECT * FROM BookTable", connection);
SqlDataReader readBooks = command.ExecuteReader();
if (readBooks != null)
{
while (readBooks.Read())
{
BookClass book = new BookClass();
book.id = readBooks["id"].ToString();
book.name = readBooks["name"].ToString();
book.price = Convert.ToDouble(readBooks["price"]);
book.stock = Convert.ToInt32(readBooks["stock"]);
book.author = readBooks["author"].ToString();
book.publisher = readBooks["publisher"].ToString();
book.isbn = readBooks["isbn"].ToString();
book.page = Convert.ToInt32(readBooks["page"]);
book.cover_page_picture = readBooks["cover_page_picture"].ToString();
books.Add(book);
}
}
return(books);
}
catch (Exception e)
{
FileWriterClass.WriteFile(AppConstants.EXCEPTION_LOG_FILE_LOCATION, "Exception at getAllBooksFromDB function" + e.Message);
Console.WriteLine("Click {0}", e.Message);
return(null);
}
}