CommentAPI.cs :  » Bloggers » dasBlog » newtelligence » DasBlog » Web » Services » C# / CSharp Open Source

using System;
using System.Web;
using newtelligence.DasBlog.Runtime;
using newtelligence.DasBlog.Web.Services.Rss20;
using System.Xml;
using System.Xml.Serialization;
using newtelligence.DasBlog.Web.Core;

namespace newtelligence.DasBlog.Web.Services{
  /// <summary>
  /// Summary description for CommentAPI.
  /// </summary>
  public class CommentAPI : IHttpHandler
  {
    public CommentAPI()
    {
    }


        public void ProcessRequest( HttpContext context )
        {
            if( context.Request.ContentType =="text/xml" &&
                context.Request.RequestType =="POST" &&
                context.Request.QueryString["guid"] != null )
            {
                try
                {
                    ILoggingDataService logService = LoggingDataServiceFactory.GetService(SiteConfig.GetLogPathFromCurrentContext());
                    IBlogDataService dataService = BlogDataServiceFactory.GetService(SiteConfig.GetContentPathFromCurrentContext(), logService);
                    DataCache cache = CacheFactory.GetCache();
                    
          Entry entry = dataService.GetEntry(context.Request.QueryString["guid"]);

          if (entry != null && DasBlog.Web.Core.SiteUtilities.AreCommentsAllowed(entry, SiteConfig.GetSiteConfig()))
          {
            XmlSerializer ser = new XmlSerializer(typeof(RssItem));
            RssItem item = (RssItem)ser.Deserialize(context.Request.InputStream);
            if ( item != null )
            {
              Comment c = new Comment();
              c.Initialize();
              foreach( XmlElement el in item.anyElements )
              {
                if ( el.NamespaceURI == "http://purl.org/dc/elements/1.1/" &&
                  el.LocalName == "creator")
                {
                  c.Author = el.InnerText;
                  break;
                }
              }
              c.AuthorEmail = item.Author;
              c.AuthorHomepage = item.Link;
              c.AuthorIPAddress = context.Request.UserHostAddress;
              c.Content = context.Server.HtmlEncode(item.Description);
              c.TargetEntryId = entry.EntryId;
              c.TargetTitle = "";
              dataService.AddComment(c);
              
              // TODO: no comment mail?

              // break the caching
              cache.Remove("BlogCoreData");
              context.Response.StatusCode = 200;
              context.Response.SuppressContent = true;
              context.Response.End();
            }
          }
          else if (entry != null && !entry.AllowComments)
          {
            context.Response.StatusCode = 403; // Forbidden
            context.Response.SuppressContent = true;
            context.Response.End();
          }
          else if (entry == null)
          {
            context.Response.StatusCode = 404; // Not Found
            context.Response.SuppressContent = true;
            context.Response.End();
          }
                }
                catch(Exception exc)
                {
                    ErrorTrace.Trace(System.Diagnostics.TraceLevel.Error,exc);
                }
            }
        }

        public bool IsReusable
        {
            get
            {
                return true;
            }
        }
  }
}