public ServiceResult <string> Save(BlogEntryModel entryModel)
{
if (entryModel == null)
{
throw new ArgumentNullException("entryModel");
}
entryModel.RebuildTagsFromString();
BlogEntry entry = null;
if (!Exists(entryModel.Slug))
{
entry = new BlogEntry
{
Slug = entryModel.Title.ToUrlSlug(),
DateCreated = DateTime.Now
};
if (Exists(entry.Slug))
{
return(ServiceResult <string> .Error("Sorry, a post with that slug already exists."));
}
}
else
{
entry = AutoMapper.Mapper.Map <BlogEntryEntity, BlogEntry>(_blogRepository.Single <BlogEntryEntity>(b => b.Slug == entryModel.Slug));
entry.DateCreated = DateTime.ParseExact(entryModel.Date, DateSettings.DateStringFormat(), Thread.CurrentThread.CurrentCulture);
var slugChanged =
!string.Equals(entryModel.Slug, entryModel.NewSlug, StringComparison.InvariantCultureIgnoreCase) &&
!string.IsNullOrWhiteSpace(entryModel.NewSlug);
if (slugChanged)
{
if (Exists(entryModel.NewSlug))
{
return(ServiceResult <string> .Error("Sorry, a post with that slug already exists."));
}
//delete current one as slug is the ID will create / save a new one.
Delete(entryModel.Slug);
entry.Slug = entryModel.NewSlug.ToLowerInvariant();
}
}
if (!IsValidSlug(entry.Slug))
{
return(ServiceResult <string> .Error("That's not a valid slug. Only letters, numbers and hypens are allowed."));
}
entry.Title = entryModel.Title;
entry.Markdown = entryModel.Markdown;
entry.Summary = CreateSummary(entryModel.Markdown);
entry.IsPublished = entryModel.IsPublished;
entry.IsCodePrettified = entryModel.IsCodePrettified;
entry.Author = _blogUserService.FindByName(_currentUserService.GetUserName()).DisplayName;
//update all the tags.
var tags = _blogRepository.All <TagEntity>().ToArray();
var distinctTags = entryModel.Tags.Distinct();
var trimmedTags = distinctTags.Select(t => t.Trim().ToLowerInvariant()).ToArray();
var matchedTags = tags.Where(t => trimmedTags.Contains(t.Name.ToLowerInvariant())).ToArray();
var newTags = trimmedTags.Where(t => tags.All(tag => tag.Name.ToLowerInvariant() != t))
.Select(t => new TagEntity {
Id = 0, Name = t
}).ToArray();
//ensure new tags are added to the list of known tags.
foreach (var newTag in newTags)
{
_blogRepository.Add(newTag);
}
var actualTags = newTags.Union(matchedTags);
var entryEntity = AutoMapper.Mapper.Map <BlogEntry, BlogEntryEntity>(entry);
entryEntity.Tags.Clear();
entryEntity.Tags.AddRange(actualTags);
_blogRepository.Save(entryEntity, b => b.Slug == entry.Slug);
_blogTagService.RemoveUnsedTags();
_blogTagService.UpdateTagCount();
return(ServiceResult <string> .Success(entry.Slug));
}
