/BlogEngine/DotNetSlave.BusinessLogic/API/BlogML/BlogImporter.cs

namespace BlogEngine.Core.API.BlogML

{

    using System;

    using System.Globalization;

    using System.Text.RegularExpressions;



    /// <summary>

    /// Blog Importer

    /// </summary>

    public class BlogImporter

    {

        #region Public Methods



        /// <summary>

        /// Add new blog post to system

        /// </summary>

        /// <returns>

        /// string containing unique post identifier

        /// </returns>

        public string AddPost(BlogMlExtendedPost extPost)

        {

            if (!Security.IsAdministrator)

            {

                throw new InvalidOperationException("BlogImporter.AddPost: Wrong credentials");

            }



            using (var p = new Post())

            {

                p.Title = extPost.BlogPost.Title;

                p.DateCreated = extPost.BlogPost.DateCreated;

                p.DateModified = extPost.BlogPost.DateModified;

                p.Content = extPost.BlogPost.Content.UncodedText;

                p.Description = extPost.BlogPost.Excerpt.UncodedText;

                p.IsPublished = extPost.BlogPost.Approved;



                if (!string.IsNullOrEmpty(extPost.PostUrl))

                {

                    // looking for a Slug with patterns such as:

                    //    /some-slug.aspx

                    //    /some-slug.html

                    //    /some-slug

                    //

                    Match slugMatch = Regex.Match(extPost.PostUrl, @"/([^/\.]+)(?:$|\.[\w]{1,10}$)", RegexOptions.IgnoreCase);

                    if (slugMatch.Success)

                        p.Slug = slugMatch.Groups[1].Value.Trim();

                }



                if(extPost.BlogPost.Authors != null && extPost.BlogPost.Authors.Count > 0)

                    p.Author = extPost.BlogPost.Authors[0].Ref;



                if (extPost.Categories != null && extPost.Categories.Count > 0)

                    p.Categories.AddRange(extPost.Categories);



                if(extPost.Tags != null && extPost.Tags.Count > 0)

                    p.Tags.AddRange(extPost.Tags);



                // skip if post with this url already exists

                var s = PostUrl(p.Slug, p.DateCreated);

                var list = Post.Posts.FindAll(ps => ps.RelativeLink == s);

                if (list.Count > 0)

                {

                    return string.Empty;

                }



                if(extPost.Comments != null && extPost.Comments.Count > 0)

                {

                    foreach (var comment in extPost.Comments)

                    {

                        p.ImportComment(comment);

                    }

                }



                p.Import();

                return p.Id.ToString();

            }

        }



        /// <summary>

        /// Force Reload of all posts

        /// </summary>

        public void ForceReload()

        {

            if (!Security.IsAdministrator)

            {

                throw new InvalidOperationException("BlogImporter.ForeceReload: Wrong credentials");

            }



            Post.Reload();

        }



        /// <summary>

        /// post url

        /// </summary>

        /// <param name="slug">post slug</param>

        /// <param name="dateCreated">date created</param>

        /// <returns></returns>

        static string PostUrl(string slug, DateTime dateCreated)

        {

            var theslug = Utils.RemoveIllegalCharacters(slug) + BlogConfig.FileExtension;



            return BlogSettings.Instance.TimeStampPostLinks

                       ? string.Format(

                           "{0}post/{1}{2}",

                           Utils.RelativeWebRoot,

                           dateCreated.ToString("yyyy/MM/dd/", CultureInfo.InvariantCulture),

                           theslug)

                       : string.Format("{0}post/{1}", Utils.RelativeWebRoot, theslug);

        }



        #endregion

    }

}