public async Task AddAsync(Book newBook)
{
var entity = Mapper.Map <Entities.Book>(newBook);
await _context.AddAsync(entity);
try
{
await _context.SaveChangesAsync();
}
catch (DbUpdateException e)
{
if (e.InnerException is SqlException sqlException)
{
if (sqlException.Number == 547)
{
throw new MemberRelationException("Check entered value. ",
sqlException.Message);
}
else
{
throw;
}
}
else
{
throw;
}
}
}
public async Task AddAsync(User newUser)
{
var entity = Mapper.Map <Entities.User>(newUser);
await _context.AddAsync(entity);
await _context.SaveChangesAsync();
}
public async Task AddAsync(Author newAuthor)
{
var entity = Mapper.Map <Entities.Author>(newAuthor);
await _context.AddAsync(entity);
await _context.SaveChangesAsync();
}
public async Task AddRangeAsync(IEnumerable <UserBook> userBooks)
{
var bookIds = userBooks.Select(u => u.BookId);
var books = await _context.Book.Where(b => bookIds.Contains(b.Id)).ToListAsync();
foreach (var item in userBooks)
{
var book = books.Find(b => b.Id == item.BookId);
if (book.AvailableCount >= item.Count)
{
var entity = Mapper.Map <Entities.UserBook>(item);
await _context.AddAsync(entity);
book.AvailableCount -= item.Count;
}
else
{
_context.Dispose();
throw new OrderedBookAvailabilityException("Books available count has been updated!");
}
}
await _context.SaveChangesAsync();
}
public async Task AddAsync(User user)
{
await _context.AddAsync(user);
await _context.SaveChangesAsync();
}