public async Task Return([FromRoute] int bookId)
{
var currentUserName = User.FindFirst(ClaimTypes.Name).Value;
if (currentUserName == null)
{
throw new InvalidOperationException("User does not have a Name/ID");
}
var user = await _bookShelfService.FindUserAsync(currentUserName);
try
{
await _bookShelfService.ReturnBookAsync(user, bookId);
}
catch (InvalidOperationException e)
{
BadRequest(e.Message);
}
}