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 TunyNet.Utils;
 12using SpaceBuilder.Components;
 13using SpaceBuilder.Blogs.Components;
 14using TunyNet.Data.Utils;
 15using TunyNet.Rss.Components;
 16using SpaceBuilder.Blogs.Configuration;
 17using SpaceBuilder.Configuration;
 18using System.Web;
 19
 20namespace SpaceBuilder.Blogs.Controls
 21...{
 22    /**//// <summary>
 23    /// 用于生成博客文章rss
 24    /// </summary>
 25    public class BlogPostRssHandler : BaseRssHandler
 26    ...{
 27        public BlogPostRssHandler()
 28        ...{ }
 29
 30        private int sectionID = -1;
 31        public int SectionID
 32        ...{
 33            get ...{ return sectionID; }
 34            set ...{ sectionID = value; }
 35        }
 36
 37        private string appkey = null;
 38        public string ApplicationKey
 39        ...{
 40            get ...{ return appkey; }
 41            set ...{ appkey = value; }
 42        }
 43
 44
 45        private string tagName = null;
 46        public string TagName
 47        ...{
 48            get ...{ return tagName; }
 49            set ...{ tagName = value; }
 50        }
 51
 52        private Weblog currentBlog = null;
 53        public Weblog CurrentBlog
 54        ...{
 55            get
 56            ...{
 57                if (currentBlog == null)
 58                ...{
 59                    if (SectionID > 0)
 60                        currentBlog = Weblogs.GetWeblog(SectionID);
 61                    else if (!ValueHelper.IsNullOrEmpty(ApplicationKey))
 62                        currentBlog = Weblogs.GetWeblog(ApplicationKey);
 63                }
 64
 65                return currentBlog;
 66            }
 67        }
 68
 69        /**//// <summary>
 70        /// Appends http://Host:Port to all blog urls
 71        /// </summary>
 72        protected override string BaseUrl
 73        ...{
 74            get ...{ return WebUtils.HostPath(Context.Request.Url); }
 75        }
 76
 77        protected override int CacheTime ...{ get ...{ return WeblogConfiguration.Instance().RssCacheWindowInSeconds; } }
 78
 79        protected override string CacheKey
 80        ...{
 81            get
 82            ...{
 83                if (!ValueHelper.IsNullOrEmpty(ApplicationKey))
 84                ...{
 85                    if (!ValueHelper.IsNullOrEmpty(TagName))
 86                        return string.Format("Rss_BlogPosts:{0}:TagName:{1}", ApplicationKey, TagName);
 87                    else
 88                        return string.Format("Rss_BlogPosts:{0}:Individual", ApplicationKey);
 89                }
 90                else
 91                ...{
 92                    if (!ValueHelper.IsNullOrEmpty(TagName))
 93                        return string.Format("Rss_BlogPosts:{0}:TagName:{1}", SectionID, TagName);
 94                    else
 95                        return string.Format("Rss_BlogPosts:{0}:Individual", SectionID);
 96                }
 97            }
 98        }
 99
100        protected override void ProcessFeed()
101        ...{
102            SBContext sbContext = SBContext.Current;
103            if (sbContext.GetIntFromQueryString("SectionID", -1) > 0)
104                this.SectionID = sbContext.GetIntFromQueryString("SectionID", -1);
105
106            this.ApplicationKey = sbContext.ApplicationKey;
107            this.TagName = sbContext.GetStringFromQueryString("TagName", string.Empty);
108
109            base.ProcessFeed();
110        }
111
112        protected override TunyNet.Rss.Components.CachedFeed BuildFeed()
113        ...{
114            if (CurrentBlog == null)
115                return new TunyNet.Rss.Components.CachedFeed(DateTime.Now, null, string.Empty);
116
117            BlogThreadQuery query = new BlogThreadQuery();
118            query.SectionID = CurrentBlog.SectionID;
119
120            if (!ValueHelper.IsNullOrEmpty(TagName))
121                query.TagName = TagName;
122
123            query.IncludeTags = false;
124            query.PageSize = WeblogConfiguration.Instance().RssDefaultThreadsPerFeed;
125            query.SortBy = BlogThreadSortBy.MostRecent;
126            query.SortOrder = SortOrder.Descending;
127            query.IsPublicFilter = true;
128            query.IgnorePaging = true;
129            query.PostConfig = BlogPostConfig.IsAggregated;
130
131            PagingDataSet<BlogThread> threads = BlogPosts.GetBlogThreads(query);
132
133            RssDocument rssDoc = new RssDocument();
134            rssDoc.UseExternalNamespaces = true;
135            if (!ValueHelper.IsNullOrEmpty(StyleSheet))
136                rssDoc.StyleSheet = FormatUrl(VirtualPathUtility.ToAbsolute(StyleSheet));
137
138            RssChannel rssChannel = new RssChannel();
139            rssChannel.Title = CurrentBlog.SectionName;
140            rssChannel.Link = FormatUrl(UserUrls.Instance().BlogHome(currentBlog.ApplicationKey));
141            rssChannel.Description = CurrentBlog.Description;
142            rssChannel.Language = currentBlog.Langugage;
143            rssChannel.Generator = SBConfiguration.Instance().SpaceBuilderVersionInfo;
144
145            List<RssItem> rssItems = new List<RssItem>();
146
147            foreach (BlogThread thread in threads.Records)
148            ...{
149                RssItem item = new RssItem();
150                item.Title = WebUtils.HtmlDecode(thread.Subject);
151                item.Link = FormatUrl(BlogUrls.Instance().ShowPost(thread));
152                item.Author = thread.Author;
153                item.PubDate = thread.PostDate;
154
155                RssGuid guid = new RssGuid();
156                guid.IsPermaLink = false;
157                guid.Text = SiteSettingsManager.GetSiteSettings().SiteKey + ":Weblog:" + thread.PostID;
158                item.Guid = guid;
159
160                item.Comments = FormatUrl(BlogUrls.Instance().CommentsPage(CurrentBlog.ApplicationKey, thread.PostID));
161
162                if (WeblogConfiguration.Instance().TruncateAggregatePost)
163                    item.Description = HtmlUtils.TrimHtml(thread.Body, WeblogConfiguration.Instance().AggregatePostSize);
164                else
165                    item.Description = thread.Body;
166
167                //是否启用rss阅读计数
168                if (CurrentBlog.EnableAggBugs)
169                ...{
170                    item.Description = string.Format("{0}<img src=\"{1}\" width=\"1\" height=\"1\">", item.Description, FormatUrl(GlobalUrls.Instance().AggView(ViewObject.BlogThread, thread.PostID)));
171                }
172
173                item.ReplyCount = thread.ReplyCount;
174
175                rssItems.Add(item);
176            }
177
178            rssDoc.Channel = rssChannel;
179            rssChannel.Items = rssItems;
180
181            DateTime dt = threads.TotalRecords > 0 ? threads.Records[0].PostDate : DateTime.Now;
182
183            return new TunyNet.Rss.Components.CachedFeed(dt, null, rssDoc.ToXml());
184        }
185
186
187    }
188}
189