public async Task AddAsync(Data.Order order)
{
foreach (var item in order.OrderItems)
{
var comic = await _context.ComicBooks.FindAsync(item.ComicBookId);
if (comic == null)
{
throw new NullReferenceException("Invalid comic book Id");
}
if (comic.Quantity < item.Quantity)
{
throw new InvalidOperationException(
$"Comic book with id: {comic.Id} does not have enough items to create your order (in stock {comic.Quantity}, your order {item.Quantity})");
}
comic.Quantity = comic.Quantity - item.Quantity;
_context.Update(comic);
}
_context.Orders.Add(order);
await _context.SaveChangesAsync();
}
public Task AddAsync(Data.Series series)
{
_context.Set <Data.Series>().Add(series);
return(_context.SaveChangesAsync());
}
public Task AddAsync(Data.Publisher publisher)
{
_context.Publishers.Add(publisher);
return(_context.SaveChangesAsync());
}
public Task AddAsync(Data.Artist artist)
{
_context.Set <Data.Artist>().Add(artist);
return(_context.SaveChangesAsync());
}
public Task AddAsync(Data.ComicBook comic)
{
_context.Set <Data.ComicBook>().Add(comic);
return(_context.SaveChangesAsync());
}