1//------------------------------------------------------------------------------
  2// <copyright company="Tunynet">
  3//     Copyright (c) Tunynet Network Technology Co., Ltd.  All rights reserved.
  4// </copyright> 
  5//------------------------------------------------------------------------------
  6
  7using System;
  8using System.Collections.Generic;
  9using System.Text;
 10using SpaceBuilder.Rss.Controls;
 11using SpaceBuilder.Blogs.Components;
 12using TunyNet.Utils;
 13using SpaceBuilder.Components;
 14using SpaceBuilder.Blogs.Configuration;
 15using TunyNet.Data.Utils;
 16using TunyNet.Rss.Components;
 17using SpaceBuilder.Configuration;
 18using System.Web;
 19
 20namespace SpaceBuilder.Blogs.Controls
 21...{
 22    /**//// <summary>
 23    /// 用于生成博客评论
 24    /// </summary>
 25    /// <remarks>
 26    /// 例如：生成博客最新评论,获取某篇文章的评论
 27    /// </remarks>
 28    public class BlogCommentRssHandler : BaseRssHandler
 29    ...{
 30        public BlogCommentRssHandler()
 31        ...{ }
 32
 33        private int sectionID = -1;
 34        public int SectionID
 35        ...{
 36            get ...{ return sectionID; }
 37            set ...{ sectionID = value; }
 38        }
 39
 40        private string appkey = null;
 41        public string ApplicationKey
 42        ...{
 43            get ...{ return appkey; }
 44            set ...{ appkey = value; }
 45        }
 46
 47        private int threadID = -1;
 48        public int ThreadID
 49        ...{
 50            get ...{ return threadID; }
 51            set ...{ threadID = value; }
 52        }
 53
 54        private Weblog currentBlog = null;
 55        public Weblog CurrentBlog
 56        ...{
 57            get
 58            ...{
 59                if (currentBlog == null)
 60                ...{
 61                    if (SectionID > 0)
 62                        currentBlog = Weblogs.GetWeblog(SectionID);
 63                    else if (!ValueHelper.IsNullOrEmpty(ApplicationKey))
 64                        currentBlog = Weblogs.GetWeblog(ApplicationKey);
 65                }
 66
 67                return currentBlog;
 68            }
 69        }
 70
 71        /**//// <summary>
 72        /// Appends http://Host:Port to all blog urls
 73        /// </summary>
 74        protected override string BaseUrl
 75        ...{
 76            get ...{ return WebUtils.HostPath(Context.Request.Url); }
 77        }
 78
 79        protected override int CacheTime ...{ get ...{ return WeblogConfiguration.Instance().RssCacheWindowInSeconds; } }
 80
 81        protected override string CacheKey
 82        ...{
 83            get
 84            ...{
 85                if (!ValueHelper.IsNullOrEmpty(ApplicationKey))
 86                ...{
 87                    if (ThreadID > 0)
 88                        return string.Format("Rss_BlogComments:{0}:ThreadID:{1}", ApplicationKey, ThreadID);
 89                    else
 90                        return string.Format("Rss_BlogComments:{0}:MostRecent", ApplicationKey);
 91                }
 92                else
 93                ...{
 94                    if (ThreadID > 0)
 95                        return string.Format("Rss_BlogComments:{0}:ThreadID:{1}", SectionID, ThreadID);
 96                    else
 97                        return string.Format("Rss_BlogComments:{0}:MostRecent", SectionID);
 98                }
 99            }
100        }
101
102        protected override void ProcessFeed()
103        ...{
104            SBContext wlContext = SBContext.Current;
105            if (wlContext.GetIntFromQueryString("SectionID", -1) > 0)
106                this.SectionID = wlContext.GetIntFromQueryString("SectionID", -1);
107
108            this.ApplicationKey = wlContext.ApplicationKey;
109            this.ThreadID = wlContext.ThreadID;
110
111            base.ProcessFeed();
112        }
113
114        protected override TunyNet.Rss.Components.CachedFeed BuildFeed()
115        ...{
116            if (CurrentBlog == null)
117                return new TunyNet.Rss.Components.CachedFeed(DateTime.Now, null, string.Empty);
118
119            BlogCommentQuery query = new BlogCommentQuery();
120            if (this.ThreadID > 0)
121                query.ThreadID = this.ThreadID;
122            else
123                query.SectionID = CurrentBlog.SectionID;
124
125            query.ApproveStatus = ApproveStatus.IsApproved;
126            query.PageSize = WeblogConfiguration.Instance().RssDefaultThreadsPerFeed;
127            query.SortBy = BlogCommentSortBy.PostDate;
128            query.SortOrder = SortOrder.Descending;
129            query.IgnorePaging = true;
130
131            PagingDataSet<BlogPost> threads = BlogPosts.GetComments(query);
132
133            RssDocument rssDoc = new RssDocument();
134            rssDoc.UseExternalNamespaces = true;
135
136            if (!ValueHelper.IsNullOrEmpty(StyleSheet))
137                rssDoc.StyleSheet = FormatUrl(VirtualPathUtility.ToAbsolute(StyleSheet));
138
139            RssChannel rssChannel = new RssChannel();
140            rssChannel.Title = CurrentBlog.SectionName;
141            rssChannel.Link = FormatUrl(UserUrls.Instance().BlogHome(currentBlog.ApplicationKey));
142            rssChannel.Description = CurrentBlog.Description;
143            rssChannel.Language = currentBlog.Langugage;
144            rssChannel.Generator = SBConfiguration.Instance().SpaceBuilderVersionInfo;
145
146            List<RssItem> rssItems = new List<RssItem>();
147
148            foreach (BlogPost comment in threads.Records)
149            ...{
150                RssItem item = new RssItem();
151                item.Title = WebUtils.HtmlDecode(comment.Subject);
152
153                item.Author = comment.Author;
154                item.PubDate = comment.PostDate;
155
156                RssGuid guid = new RssGuid();
157                guid.IsPermaLink = false;
158                guid.Text = SiteSettingsManager.GetSiteSettings().SiteKey + ":Weblog:" + comment.PostID;
159                item.Guid = guid;
160
161                BlogThread thread = BlogPosts.GetThread(comment.ParentID, true);
162                if (thread != null)
163                ...{
164                    item.Link = FormatUrl(BlogUrls.Instance().ShowPost(thread, CurrentBlog, comment));
165                    item.Comments = FormatUrl(BlogUrls.Instance().CommentsPage(CurrentBlog.ApplicationKey, comment.ParentID));
166                }
167
168                item.Description = comment.Body;
169                //item.ReplyCount = comment.ReplyCount;
170                rssItems.Add(item);
171            }
172
173            rssDoc.Channel = rssChannel;
174            rssChannel.Items = rssItems;
175
176            DateTime dt = threads.TotalRecords > 0 ? threads.Records[0].PostDate : DateTime.Now;
177
178            return new TunyNet.Rss.Components.CachedFeed(dt, null, rssDoc.ToXml());
179        }
180
181
182    }
183}
184