public async Task <IActionResult> PostAsync([NotNull] string bookId)
{
var userId = User.FindFirst(ClaimTypes.NameIdentifier).Value;
var subscription = new BookSubscriptionServiceModel()
{
BookId = bookId, UserId = userId
};
await _bookSubscriptionsRepository.SaveAsync(subscription);
return(Ok());
}
public async Task <IActionResult> DeleteAsync([NotNull] string bookId)
{
var userId = User.FindFirst(ClaimTypes.NameIdentifier).Value;
var subscription = new BookSubscriptionServiceModel()
{
BookId = bookId, UserId = userId
};
var deleted = await _bookSubscriptionsRepository.DeleteAsync(subscription);
if (!deleted)
{
return(NotFound());
}
return(Ok());
}
public async Task SaveAsync(BookSubscriptionServiceModel bookSubscription)
{
if (bookSubscription is null)
{
throw new ArgumentNullException(nameof(bookSubscription));
}
if (_dbContext.Users.Any(u => u.Id == bookSubscription.UserId && u.BookSubscriptions.Any(bs => bs.BookId == bookSubscription.BookId)))
{
// Subscription already exists
return;
}
var bookSubscribtion = new BookSubscription()
{
BookId = bookSubscription.BookId, UserId = bookSubscription.UserId
};
_dbContext.Add(bookSubscribtion).State = EntityState.Added;
await _dbContext.SaveChangesAsync();
}
public async Task <bool> DeleteAsync(BookSubscriptionServiceModel bookSubscription)
{
if (bookSubscription is null)
{
throw new ArgumentNullException(nameof(bookSubscription));
}
if (!_dbContext.Users.Any(u => u.Id == bookSubscription.UserId && u.BookSubscriptions.Any(bs => bs.BookId == bookSubscription.BookId)))
{
// Subscription does not exist
return(false);
}
var bookSubscribtion = new BookSubscription()
{
BookId = bookSubscription.BookId, UserId = bookSubscription.UserId
};
_dbContext.Add(bookSubscribtion).State = EntityState.Deleted;
await _dbContext.SaveChangesAsync();
return(true);
}
