Make sure new RSS download rules apply to existing articles as well, not just new ones

May be related to #116.

src/rss/rss_imp.cpp

@@ -761,6 +761,8 @@ void RSSImp::on_rssDownloaderBtn_clicked()
 {
   AutomatedRssDownloader dlg(m_rssManager, this);
   dlg.exec();
-  if (dlg.isRssDownloaderEnabled())
+  if (dlg.isRssDownloaderEnabled()) {
+    m_rssManager->recheckRssItemsForDownload();
     refreshAllFeeds();
+  }
 }

src/rss/rssarticle.cpp

@@ -89,10 +89,9 @@ const QString& RssArticle::link() const {
   return m_link;
 }
 
-const QString& RssArticle::description() const {
-  if (m_description.isNull())
-    return "";
-  return m_description;
+QString RssArticle::description() const
+{
+  return m_description.isNull() ? "" : m_description;
 }
 
 const QDateTime& RssArticle::date() const {

src/rss/rssarticle.h

@@ -54,7 +54,7 @@ public:
   const QString& author() const;
   const QString& torrentUrl() const;
   const QString& link() const;
-  const QString& description() const;
+  QString description() const;
   const QDateTime& date() const;
   bool isRead() const;
   // Setters

src/rss/rssfeed.cpp

@@ -313,6 +313,34 @@ void RssFeed::handleFeedTitle(const QString& feedUrl, const QString& title)
     m_manager->forwardFeedInfosChanged(feedUrl, title, m_unreadCount);
 }
 
+void RssFeed::downloadArticleTorrentIfMatching(RssDownloadRuleList* rules, const RssArticlePtr& article)
+{
+  Q_ASSERT(RssSettings().isRssDownloadingEnabled());
+  RssDownloadRulePtr matching_rule = rules->findMatchingRule(m_url, article->title());
+  if (!matching_rule)
+    return;
+
+  // Torrent was downloaded, consider article as read
+  article->markAsRead();
+  // Download the torrent
+  const QString& torrent_url = article->torrentUrl();
+  QBtSession::instance()->addConsoleMessage(tr("Automatically downloading %1 torrent from %2 RSS feed...").arg(article->title()).arg(displayName()));
+  if (torrent_url.startsWith("magnet:", Qt::CaseInsensitive))
+    QBtSession::instance()->addMagnetSkipAddDlg(torrent_url, matching_rule->savePath(), matching_rule->label());
+  else
+    QBtSession::instance()->downloadUrlAndSkipDialog(torrent_url, matching_rule->savePath(), matching_rule->label());
+}
+
+void RssFeed::recheckRssItemsForDownload()
+{
+  Q_ASSERT(RssSettings().isRssDownloadingEnabled());
+  RssDownloadRuleList* rules = m_manager->downloadRules();
+  foreach (const RssArticlePtr& article, m_articlesByDate) {
+    if (!article->isRead())
+      downloadArticleTorrentIfMatching(rules, article);
+  }
+}
+
 void RssFeed::handleNewArticle(const QString& feedUrl, const QVariantHash& articleData)
 {
   if (feedUrl != m_url)
@@ -329,20 +357,8 @@ void RssFeed::handleNewArticle(const QString& feedUrl, const QVariantHash& artic
   addArticle(article);
 
   // Download torrent if necessary.
-  if (RssSettings().isRssDownloadingEnabled()) {
-    RssDownloadRulePtr matching_rule = m_manager->downloadRules()->findMatchingRule(m_url, article->title());
-    if (matching_rule) {
-      // Torrent was downloaded, consider article as read
-      article->markAsRead();
-      // Download the torrent
-      QString torrent_url = article->torrentUrl();
-      QBtSession::instance()->addConsoleMessage(tr("Automatically downloading %1 torrent from %2 RSS feed...").arg(article->title()).arg(displayName()));
-      if (torrent_url.startsWith("magnet:", Qt::CaseInsensitive))
-        QBtSession::instance()->addMagnetSkipAddDlg(torrent_url, matching_rule->savePath(), matching_rule->label());
-      else
-        QBtSession::instance()->downloadUrlAndSkipDialog(torrent_url, matching_rule->savePath(), matching_rule->label());
-    }
-  }
+  if (RssSettings().isRssDownloadingEnabled())
+    downloadArticleTorrentIfMatching(m_manager->downloadRules(), article);
 
   m_manager->forwardFeedInfosChanged(m_url, displayName(), m_unreadCount);
   // FIXME: We should forward the information here but this would seriously decrease

src/rss/rssfeed.h

@@ -40,6 +40,7 @@
 
 class RssFeed;
 class RssManager;
+class RssDownloadRuleList;
 
 typedef QHash<QString, RssArticlePtr> RssArticleHash;
 typedef QSharedPointer<RssFeed> RssFeedPtr;
@@ -75,6 +76,7 @@ public:
   const RssArticleHash& articleHash() const { return m_articles; }
   virtual RssArticleList unreadArticleListByDateDesc() const;
   void decrementUnreadCount();
+  void recheckRssItemsForDownload();
 
 private slots:
   void handleFinishedDownload(const QString& url, const QString &file_path);
@@ -87,6 +89,7 @@ private:
   QString iconUrl() const;
   void loadItemsFromDisk();
   void addArticle(const RssArticlePtr& article);
+  void downloadArticleTorrentIfMatching(RssDownloadRuleList* rules, const RssArticlePtr& article);
 
 private:
   RssManager* m_manager;

src/rss/rssfile.h

@@ -65,6 +65,7 @@ public:
   virtual RssArticleList unreadArticleListByDateDesc() const = 0;
   virtual void removeAllSettings() = 0;
   virtual void saveItemsToDisk() = 0;
+  virtual void recheckRssItemsForDownload() = 0;
   QStringList pathHierarchy() const;
 
 protected:

src/rss/rssfolder.cpp

@@ -251,3 +251,12 @@ RssFilePtr RssFolder::takeChild(const QString &childId)
 {
   return m_children.take(childId);
 }
+
+void RssFolder::recheckRssItemsForDownload()
+{
+  RssFileHash::ConstIterator it = m_children.begin();
+  RssFileHash::ConstIterator itend = m_children.end();
+  for ( ; it != itend; ++it) {
+    it.value()->recheckRssItemsForDownload();
+  }
+}

src/rss/rssfolder.h

@@ -70,6 +70,7 @@ public:
   void removeAllItems();
   void renameChildFolder(const QString &old_name, const QString &new_name);
   RssFilePtr takeChild(const QString &childId);
+  void recheckRssItemsForDownload();
 
 public slots:
   virtual bool refresh();