// HTTP POST /archive/{slug}
public async Task<ActionResult> CreateBlogComment(string slug, CommentPostRequestModel requestModel)
{
// TODO: 1-) Check whether the post/dynamic-page exists and comments enabled for that.
// 2-) Check whether model state is valid.
// 3-) Check whether captcha is valid.
// 4-) Check whether the spam check is enabled or not. If enabled, check against spam.
// 4.1-) If spam, log the info as warning and mark the comment as spam.
// 4.2-) If spam check throws an exception, log the error message and continue our way as the comment is not spam.
// 5-) If not spam, write the comment as OK into the right place.
// 1-) Check whether the post/dynamic-page exists and comments enabled for that.
BlogPost blogPost = await RetrieveBlogPostAsync(slug);
if(blogPost == null)
{
Logger.Warn(string.Format("Blog post could not be found for comment post. Slug: {0}", slug));
return HttpNotFound();
}
BlogPostPageViewModel viewModel = await ConstructBlogPostViewModelWithCommentsAsync(blogPost, slug);
// 2-) Blog post exists. Check whether model state is valid.
if (ModelState.IsValid)
{
// 3-) Model State is valid. Check whether captcha is valid.
if (_configManager.IsRecaptchaEnabled && !ReCaptcha.Validate(_configManager.RecaptchaPrivateKey))
{
ModelState.AddModelError(string.Empty, ValidationResources.Captcha);
}
else
{
// 4-) Check whether the spam check is enabled or not. If enabled, check against spam.
bool isSpam = false;
if (_configManager.IsAkismetEnabled)
{
// Spam check enabled. Check against spam.
isSpam = await CheckCommentIfSpamAsync(slug, requestModel);
}
BlogPostComment blogPostComment = ConstructBlogPostComment(blogPost, requestModel, isSpam);
await DocumentSession.StoreAsync(blogPostComment);
await DocumentSession.SaveChangesAsync();
ViewBag.IsCommentSuccess = true;
return View(viewModel);
}
}
viewModel.CommentPostRequestModel = requestModel;
return View(viewModel);
}
private AkismetCommentRequestModel ConstructAkismetComment(CommentPostRequestModel requestModel)
{
AkismetCommentRequestModel akismetComment = _mapper.Map<CommentPostRequestModel, AkismetCommentRequestModel>(requestModel);
akismetComment.CommentType = "Comment";
if (Request.Url != null) akismetComment.Permalink = Request.Url.ToString();
if (Request.UrlReferrer != null) akismetComment.Referrer = Request.UrlReferrer.ToString();
akismetComment.UserAgent = Request.UserAgent;
akismetComment.UserIp = Request.UserHostName;
return akismetComment;
}
private BlogPostComment ConstructBlogPostComment(BlogPost blogPost, CommentPostRequestModel requestModel, bool isSpam)
{
BlogPostComment blogPostComment = _mapper.Map<CommentPostRequestModel, BlogPostComment>(requestModel);
blogPostComment.BlogPostId = blogPost.Id;
blogPostComment.IsApproved = !isSpam;
blogPostComment.IsSpam = isSpam;
blogPostComment.IsByAuthor = false;
blogPostComment.CreationIp = Request.UserHostAddress;
blogPostComment.LastUpdateIp = Request.UserHostAddress;
blogPostComment.CreatedOn = DateTimeOffset.Now;
blogPostComment.LastUpdatedOn = DateTimeOffset.Now;
if (Identity != null && Identity.IsAuthenticated)
{
string userId = RetrieveUserId(Identity);
if (userId == blogPost.AuthorId)
{
blogPostComment.IsByAuthor = true;
}
}
return blogPostComment;
}
private async Task<bool> CheckCommentIfSpamAsync(string slug, CommentPostRequestModel requestModel)
{
bool isSpam = true;
try
{
AkismetCommentRequestModel akismetComment = ConstructAkismetComment(requestModel);
AkismetResponse<bool> akismetResponse = await _akismetClient.CheckCommentAsync(akismetComment);
if (akismetResponse.IsSuccessStatusCode)
{
isSpam = akismetResponse.Entity;
}
else
{
Logger.Error(string.Format("Akismet spam check didn't return success status code for bog post '{0}'. Status Code: {1}, Error Message: {2}", slug, (int)akismetResponse.Status, akismetResponse.ErrorMessage));
}
}
catch (Exception ex)
{
Logger.Error(string.Format("Error occured during the spam check for bog post '{0}'", slug), ex);
}
return isSpam;
}
public BlogPostPageViewModel()
{
CommentPostRequestModel = new CommentPostRequestModel();
}
