clear etag values after feed purge

src/librssguard-standard/src/standardserviceroot.cpp

@@ -61,6 +61,12 @@ void StandardServiceRoot::onDatabaseCleanup() {
   }
 }
 
+void StandardServiceRoot::onAfterFeedsPurged(const QList<Feed*>& feeds) {
+  for (Feed* fd : feeds) {
+    static_cast<StandardFeed*>(fd)->setLastEtag(QString());
+  }
+}
+
 void StandardServiceRoot::start(bool freshly_activated) {
   DatabaseQueries::loadRootFromDatabase<StandardCategory, StandardFeed>(this);
 
@@ -227,7 +233,8 @@ void StandardServiceRoot::spaceHost(const QString& host, const QString& url) {
   m_spacingMutex.unlock();
 
   if (secs_to_wait > 0) {
-    qDebugNN << LOGSEC_STANDARD << "Freezing feed with URL" << QUOTE_W_SPACE(url) << "for" << NONQUOTE_W_SPACE(secs_to_wait)
+    qDebugNN << LOGSEC_STANDARD << "Freezing feed with URL" << QUOTE_W_SPACE(url) << "for"
+             << NONQUOTE_W_SPACE(secs_to_wait)
              << "seconds, because its host was used for fetching another feed during the spacing period.";
     QThread::sleep(ulong(secs_to_wait));
     qDebugNN << LOGSEC_STANDARD << "Freezing feed with URL" << QUOTE_W_SPACE(url) << "is done.";
@@ -319,7 +326,8 @@ QList<Message> StandardServiceRoot::obtainNewMessages(Feed* feed,
       feed_contents = StandardFeed::generateFeedFileWithScript(feed->source(), download_timeout);
     }
     catch (const ScriptException& ex) {
-      qCriticalNN << LOGSEC_STANDARD << "Custom script for generating feed file failed:" << QUOTE_W_SPACE_DOT(ex.message());
+      qCriticalNN << LOGSEC_STANDARD
+                  << "Custom script for generating feed file failed:" << QUOTE_W_SPACE_DOT(ex.message());
 
       throw FeedFetchException(Feed::Status::OtherError, ex.message());
     }
@@ -353,7 +361,8 @@ QList<Message> StandardServiceRoot::obtainNewMessages(Feed* feed,
         StandardFeed::postProcessFeedFileWithScript(f->postProcessScript(), feed_contents, download_timeout);
     }
     catch (const ScriptException& ex) {
-      qCriticalNN << LOGSEC_STANDARD << "Post-processing script for feed file failed:" << QUOTE_W_SPACE_DOT(ex.message());
+      qCriticalNN << LOGSEC_STANDARD
+                  << "Post-processing script for feed file failed:" << QUOTE_W_SPACE_DOT(ex.message());
 
       throw FeedFetchException(Feed::Status::OtherError, ex.message());
     }

src/librssguard-standard/src/standardserviceroot.h

@@ -27,6 +27,7 @@ class StandardServiceRoot : public ServiceRoot {
 
     virtual FormAccountDetails* accountSetupDialog() const;
     virtual void onDatabaseCleanup();
+    virtual void onAfterFeedsPurged(const QList<Feed*>& feeds);
     virtual void start(bool freshly_activated);
     virtual void stop();
     virtual QString code() const;
@@ -45,7 +46,7 @@ class StandardServiceRoot : public ServiceRoot {
     QList<QAction*> getContextMenuForFeed(StandardFeed* feed);
 
     void spaceHost(const QString& host, const QString& url);
-    void resetHostSpacing(const QString& host, const QDateTime &next_dt);
+    void resetHostSpacing(const QString& host, const QDateTime& next_dt);
 
     // If set to number > 0, then requests to fetch feeds
     // will be spaced by the given number (in seconds).

src/librssguard/core/feedsmodel.cpp

@@ -536,6 +536,16 @@ bool FeedsModel::purgeArticles(const QList<Feed*>& feeds) {
     bool anything_purged = DatabaseQueries::purgeFeedArticles(database, feeds);
 
     if (anything_purged) {
+      QMultiHash<ServiceRoot*, Feed*> feeds_per_root;
+
+      for (auto* fd : feeds) {
+        feeds_per_root.insert(fd->getParentServiceRoot(), fd);
+      }
+
+      for (auto* acc : feeds_per_root.uniqueKeys()) {
+        acc->onAfterFeedsPurged(feeds_per_root.values(acc));
+      }
+
       reloadCountsOfWholeModel();
       emit reloadMessageListRequested(false);
       return true;

src/librssguard/services/abstract/serviceroot.cpp

@@ -1184,6 +1184,10 @@ bool ServiceRoot::onAfterMessagesRestoredFromBin(RootItem* selected_item, const
   return true;
 }
 
+void ServiceRoot::onAfterFeedsPurged(const QList<Feed*>& feeds) {
+  Q_UNUSED(feeds)
+}
+
 CacheForServiceRoot* ServiceRoot::toCache() const {
   return dynamic_cast<CacheForServiceRoot*>(const_cast<ServiceRoot*>(this));
 }

src/librssguard/services/abstract/serviceroot.h

@@ -189,6 +189,9 @@ class RSSGUARD_DLLSPEC ServiceRoot : public RootItem {
     // Selected item is naturally recycle bin.
     virtual bool onAfterMessagesRestoredFromBin(RootItem* selected_item, const QList<Message>& messages);
 
+    // Called AFTER articles of these feeds are purged from the database.
+    virtual void onAfterFeedsPurged(const QList<Feed*>& feeds);
+
     // Returns the UNIQUE code of the given service.
     // NOTE: Keep in sync with ServiceEntryRoot::code().
     virtual QString code() const = 0;