private void DeleteCopiesButton_Click(object sender, EventArgs e)
{
if (BooksListBox.CheckedItems.Count == 0)
{
var selectError = new ErrorForm("You must select a book to delete copies!");
selectError.ShowDialog();
return;
}
if (string.IsNullOrWhiteSpace(NumberOfCopiesToDeleteTextBox.Text))
{
return;
}
var selected = BooksListBox.SelectedItem.ToString();
var deletedAllAvailableCopies = false;
for (var i = 0; i < int.Parse(NumberOfCopiesToDeleteTextBox.Text); i++)
{
var copyToDelete = _bookCopyRepository.GetAllBookCopies().FirstOrDefault(bookCopy =>
bookCopy.Book.ToString() == selected && bookCopy.Status == BookStatus.Available);
if (copyToDelete == null)
{
deletedAllAvailableCopies = true;
break;
}
_bookCopyRepository.TryDelete(copyToDelete);
}
if (_bookCopyRepository.GetAllBookCopies().FirstOrDefault(bookCopy => bookCopy.Book.ToString() == selected) == null)
{
_bookRepository = new BookRepository();
_bookCopyRepository = new BookCopyRepository();
var checkedBook = _bookRepository.GetAllBooks()
.FirstOrDefault(book => book.ToString() == selected);
_bookRepository.TryDelete(checkedBook);
}
else if (deletedAllAvailableCopies)
{
var borrowedError = new ErrorForm("Borrowed copies cannot be deleted until returned!");
borrowedError.ShowDialog();
}
NumberOfCopiesToDeleteTextBox.Text = "";
RefreshBookInfoListBox();
RefreshBooksListBox();
}
private void SaveButton_Click(object sender, EventArgs e)
{
if (CheckForErrors())
{
var fieldsError = new ErrorForm("You are missing some required fields!");
fieldsError.ShowDialog();
return;
}
var studentToAdd = _studentRepository.GetAllStudents()
.FirstOrDefault(student => student.ToString() == StudentComboBox.Text);
foreach (var checkedItem in BooksListBox.CheckedItems)
{
var bookToAdd = _bookRepository.GetAllBooks()
.FirstOrDefault(book => book.ToString() == checkedItem.ToString());
var isAvailable = _bookRepository.IsBookAvailable(bookToAdd);
if (!isAvailable)
{
var copiesError = new ErrorForm($"There are no available copies of {bookToAdd}!");
copiesError.ShowDialog();
continue;
}
var bookCopyToAdd = _bookCopyRepository.GetAllBookCopies().First(bookCopy =>
bookCopy.Book.ToString() == checkedItem.ToString() &&
bookCopy.Status == BookStatus.Available);
var eventToAdd = new BorrowEvent(DateOfRentPicker.Value, null, studentToAdd, bookCopyToAdd);
_borrowEventRepository.AddBorrowEvent(eventToAdd);
}
LoadStudentComboBox();
BooksListBox.Items.Clear();
}
private void RefreshBooksListBox()
{
_studentRepository = new StudentRepository();
_bookRepository = new BookRepository();
_bookCopyRepository = new BookCopyRepository();
_borrowEventRepository = new BorrowEventRepository();
BooksListBox.Items.Clear();
var studentBooksBorrowed = _borrowEventRepository.GetBorrowEventsByStudent(StudentComboBox.Text).ToList();
var readOnlyBookCopies =
_bookCopyRepository.GetAllBookCopies().Where(bookCopy => bookCopy.Status == BookStatus.ReadOnly)
.GroupBy(bookCopy => bookCopy.Book.ToString()).ToList();
var readOnlyBooks = new List <Book>();
foreach (var bookCopy in readOnlyBookCopies)
{
readOnlyBooks.Add(_bookRepository.GetAllBooks().First(book => book.ToString() == bookCopy.Key));
}
foreach (var book in _bookRepository.GetAllBooks().OrderBy(book => book.Name).ThenBy(book => book.Publisher.ToString()))
{
if (studentBooksBorrowed.Any(borrowEvent => borrowEvent.BookCopy.Book.ToString() == book.ToString()) ||
readOnlyBooks.Contains(book))
{
continue;
}
BooksListBox.Items.Add(book);
}
}
private void LoadReadOnlyBooksTextBox()
{
var readOnlyBookCopies =
_bookCopyRepository.GetAllBookCopies().Where(bookCopy => bookCopy.Status == BookStatus.ReadOnly)
.GroupBy(bookCopy => bookCopy.Book.ToString()).ToList();
foreach (var bookCopy in readOnlyBookCopies)
{
ReadOnlyBooksListBox.Items.Add(bookCopy.Key);
}
}
private void RefreshBooksListBox()
{
_bookCopyRepository = new BookCopyRepository();
_borrowEventRepository = new BorrowEventRepository();
BooksListBox.Items.Clear();
var borrowedBookCopiesByBook = _bookCopyRepository.GetAllBookCopies()
.Where(bookCopy => bookCopy.Status == BookStatus.Borrowed)
.GroupBy(bookCopy => bookCopy.Book.ToString());
foreach (var bookCopy in borrowedBookCopiesByBook)
{
BooksListBox.Items.Add(bookCopy.Key);
}
}
