private void SaveButton_Click(object sender, EventArgs e)
{
if (string.IsNullOrWhiteSpace(StudentComboBox.Text) || string.IsNullOrWhiteSpace(BookComboBox.Text))
{
MessageBox.Show(@"Inputs are empty!", @"Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
var borrowingStudent = _students.ReadStudent(StudentComboBox.Text);
var borrowedBook = _books.ReadBook(BookComboBox.Text);
var dateOfBorrow = BorrowDatePicker.Value;
var available = borrowedBook.NumberOfBooks;
var alreadyRented = 0;
foreach (var borrow in _borrows.GetBorrowsList().Where(borrow => borrow.ReturnDate == null))
{
if (borrow.BookId == borrowedBook.BookId)
{
available--;
}
if (borrow.StudentId == borrowingStudent.StudentId)
{
alreadyRented++;
}
}
if (alreadyRented > 2)
{
MessageBox.Show(@"Student passed book limit!", @"Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else if (available < 1)
{
MessageBox.Show(@"No books available!", @"Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
_borrows.CreateBorrow(borrowingStudent, borrowedBook, dateOfBorrow);
Close();
}
}
}
