public void UpdatePost(Guid oldPostId, Post @new, PostProperties propertiesToChange)
{
ValidatePost(@new, propertiesToChange);
using (var ctx = new DB.CodingIdeasEntities())
{
var p = ctx.Posts.Where(x => x.Id == oldPostId).FirstOrDefault();
if (p == null)
{
throw new PostNotFoundException();
}
if (propertiesToChange.HasFlag(PostProperties.Content))
{
p.Content = @new.Content;
}
if (propertiesToChange.HasFlag(PostProperties.Title))
{
p.Title = @new.Title;
}
ctx.SaveChanges();
}
}
private void ValidatePost(Post post, PostProperties props)
{
if (post.Content == null || props.HasFlag(PostProperties.Content) && string.IsNullOrWhiteSpace(post.Content))
{
throw new InvalidContentException();
}
if (post.Title == null || props.HasFlag(PostProperties.Title) && string.IsNullOrWhiteSpace(post.Title))
{
throw new InvalidTitleException();
}
if (props.HasFlag(PostProperties.PublishDate) && post.PublishDate > DateTime.Now)
{
throw new InvalidPublishDateException("The publish date cannot be in the future.");
}
using (var ctx = new DB.CodingIdeasEntities())
{
if (props.HasFlag(PostProperties.AuthorId) && post.AuthorId != null && ctx.Users.Where(x => x.Id == post.AuthorId).FirstOrDefault() == null)
{
throw new UserNotFoundException();
}
}
}
