experimental ability to purge articles from individual feeds - availa…

…ble with feed context menu and main menu Feeds submenu

src/librssguard/database/databasecleaner.cpp

@@ -15,58 +15,69 @@ void DatabaseCleaner::purgeDatabaseData(CleanerOrders which_data) {
 
   // Inform everyone about the start of the process.
   emit purgeStarted();
+
   bool result = true;
   const int difference = 99 / 12;
   int progress = 0;
   QSqlDatabase database = qApp->database()->driver()->connection(metaObject()->className());
 
   if (which_data.m_removeReadMessages) {
     progress += difference;
+
     emit purgeProgress(progress, tr("Removing read articles..."));
 
     // Remove read messages.
     result &= purgeReadMessages(database);
     progress += difference;
+
     emit purgeProgress(progress, tr("Read articles purged..."));
   }
 
   if (which_data.m_removeRecycleBin) {
     progress += difference;
+
     emit purgeProgress(progress, tr("Purging recycle bin..."));
 
     // Remove read messages.
     result &= purgeRecycleBin(database);
     progress += difference;
+
     emit purgeProgress(progress, tr("Recycle bin purged..."));
   }
 
   if (which_data.m_removeOldMessages) {
     progress += difference;
+
     emit purgeProgress(progress, tr("Removing old articles..."));
 
     // Remove old messages.
     result &= purgeOldMessages(database, which_data.m_barrierForRemovingOldMessagesInDays);
     progress += difference;
+
     emit purgeProgress(progress, tr("Old articles purged..."));
   }
 
   if (which_data.m_removeStarredMessages) {
     progress += difference;
+
     emit purgeProgress(progress, tr("Removing starred articles..."));
 
     // Remove old messages.
     result &= purgeStarredMessages(database);
     progress += difference;
+
     emit purgeProgress(progress, tr("Starred articles purged..."));
   }
 
   if (which_data.m_shrinkDatabase) {
     progress += difference;
+
     emit purgeProgress(progress, tr("Shrinking database file..."));
 
     // Call driver-specific vacuuming function.
     result &= qApp->database()->driver()->vacuumDatabase();
     progress += difference;
+
     emit purgeProgress(progress, tr("Database file shrinked..."));
   }
 

src/librssguard/database/databasequeries.cpp

@@ -634,6 +634,27 @@ bool DatabaseQueries::removeUnwantedArticlesFromFeed(const QSqlDatabase& db,
   return rows_deleted > 0;
 }
 
+bool DatabaseQueries::purgeFeedMessages(const QSqlDatabase& database, const Feed* feed) {
+  QSqlQuery q(database);
+
+  q.setForwardOnly(true);
+  q.prepare(QSL("DELETE FROM Messages "
+                "WHERE "
+                "  Messages.account_id = :account_id AND "
+                "  Messages.feed = :feed AND "
+                "  Messages.is_important = 0"));
+
+  q.bindValue(QSL(":feed"), feed->customId());
+  q.bindValue(QSL(":account_id"), feed->getParentServiceRoot()->accountId());
+
+  if (!q.exec()) {
+    throw ApplicationException(q.lastError().text());
+  }
+  else {
+    return q.numRowsAffected() > 0;
+  }
+}
+
 bool DatabaseQueries::purgeMessage(const QSqlDatabase& db, int message_id) {
   QSqlQuery q(db);
 

src/librssguard/database/databasequeries.h

@@ -76,6 +76,7 @@ class RSSGUARD_DLLSPEC DatabaseQueries {
                                                const Feed::ArticleIgnoreLimit& feed_setup,
                                                const Feed::ArticleIgnoreLimit& app_setup);
 
+    static bool purgeFeedMessages(const QSqlDatabase& database, const Feed* feed);
     static bool purgeMessage(const QSqlDatabase& db, int message_id);
     static bool purgeImportantMessages(const QSqlDatabase& db);
     static bool purgeReadMessages(const QSqlDatabase& db);

src/librssguard/gui/dialogs/formmain.cpp

@@ -195,6 +195,7 @@ QList<QAction*> FormMain::allActions() const {
   actions << m_ui->m_actionMarkSelectedItemsAsRead;
   actions << m_ui->m_actionMarkSelectedItemsAsUnread;
   actions << m_ui->m_actionClearSelectedItems;
+  actions << m_ui->m_actionPurgeSelectedItems;
   actions << m_ui->m_actionClearAllItems;
   actions << m_ui->m_actionShowOnlyUnreadItems;
   actions << m_ui->m_actionSortFeedsAlphabetically;
@@ -499,6 +500,7 @@ void FormMain::updateFeedButtonsAvailability() {
   m_ui->m_actionBackupDatabaseSettings->setEnabled(!critical_action_running);
   m_ui->m_actionCleanupDatabase->setEnabled(!critical_action_running);
   m_ui->m_actionClearSelectedItems->setEnabled(anything_selected);
+  m_ui->m_actionPurgeSelectedItems->setEnabled(feed_selected);
   m_ui->m_actionDeleteSelectedItem->setEnabled(!critical_action_running && anything_selected);
   m_ui->m_actionEditSelectedItem->setEnabled(!critical_action_running && anything_selected);
   m_ui->m_actionEditChildFeeds->setEnabled(!critical_action_running && (service_selected || category_selected));
@@ -605,6 +607,7 @@ void FormMain::setupIcons() {
   m_ui->m_actionUpdateSelectedItemsWithCustomTimers->setIcon(icon_theme_factory->fromTheme(QSL("download"),
                                                                                            QSL("browser-download")));
   m_ui->m_actionClearSelectedItems->setIcon(icon_theme_factory->fromTheme(QSL("mail-mark-junk")));
+  m_ui->m_actionPurgeSelectedItems->setIcon(icon_theme_factory->fromTheme(QSL("edit-clear")));
   m_ui->m_actionClearAllItems->setIcon(icon_theme_factory->fromTheme(QSL("mail-mark-junk")));
   m_ui->m_actionDeleteSelectedItem->setIcon(icon_theme_factory->fromTheme(QSL("list-remove")));
   m_ui->m_actionDeleteSelectedMessages->setIcon(icon_theme_factory->fromTheme(QSL("mail-mark-junk")));
@@ -925,6 +928,10 @@ void FormMain::createConnections() {
           &QAction::triggered,
           tabWidget()->feedMessageViewer()->feedsView(),
           &FeedsView::clearSelectedItems);
+  connect(m_ui->m_actionPurgeSelectedItems,
+          &QAction::triggered,
+          tabWidget()->feedMessageViewer()->feedsView(),
+          &FeedsView::purgeSelectedFeeds);
   connect(m_ui->m_actionClearAllItems,
           &QAction::triggered,
           tabWidget()->feedMessageViewer()->feedsView(),

src/librssguard/gui/dialogs/formmain.ui

@@ -151,6 +151,7 @@
     <addaction name="m_actionCopyUrlSelectedFeed"/>
     <addaction name="m_actionMarkSelectedItemsAsRead"/>
     <addaction name="m_actionMarkSelectedItemsAsUnread"/>
+    <addaction name="m_actionPurgeSelectedItems"/>
     <addaction name="m_actionClearSelectedItems"/>
     <addaction name="separator"/>
     <addaction name="m_actionFocusSearchFeeds"/>
@@ -960,6 +961,11 @@
     <string>&amp;Pause automatic feed fetching</string>
    </property>
   </action>
+  <action name="m_actionPurgeSelectedItems">
+   <property name="text">
+    <string>&amp;Purge selected feeds</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>

src/librssguard/gui/feedsview.cpp

@@ -254,6 +254,23 @@ void FeedsView::clearSelectedItems() {
   }
 }
 
+void FeedsView::purgeSelectedFeeds() {
+  if (MsgBox::show(nullptr,
+                   QMessageBox::Icon::Question,
+                   tr("Are you sure?"),
+                   tr("Do you really want to purge all non-starred articles from selected feeds?"),
+                   {},
+                   {},
+                   QMessageBox::StandardButton::Yes | QMessageBox::StandardButton::No,
+                   QMessageBox::StandardButton::No) != QMessageBox::StandardButton::Yes) {
+    return;
+  }
+
+  for (auto* it : selectedFeeds(true)) {
+    it->purgeArticles();
+  }
+}
+
 void FeedsView::clearAllItems() {
   if (MsgBox::show(nullptr,
                    QMessageBox::Icon::Question,

src/librssguard/gui/feedsview.h

@@ -61,6 +61,7 @@ class RSSGUARD_DLLSPEC FeedsView : public BaseTreeView {
     // Feed clearers.
     void clearSelectedItems();
     void clearAllItems();
+    void purgeSelectedFeeds();
 
     // Base manipulators.
     void editItems(const QList<RootItem*>& items);

src/librssguard/services/abstract/feed.cpp

@@ -113,6 +113,24 @@ QVariant Feed::data(int column, int role) const {
   }
 }
 
+void Feed::purgeArticles() {
+  auto database = qApp->database()->driver()->connection(metaObject()->className());
+
+  try {
+    bool anything_purged = DatabaseQueries::purgeFeedMessages(database, this);
+
+    if (anything_purged) {
+      getParentServiceRoot()->updateCounts(true);
+      getParentServiceRoot()->itemChanged(getParentServiceRoot()->getSubTree());
+      getParentServiceRoot()->requestReloadMessageList(false);
+    }
+  }
+  catch (const ApplicationException& ex) {
+    qCriticalNN << LOGSEC_CORE << "Purging of articles from feed" << QUOTE_W_SPACE(customId())
+                << "failed with error:" << QUOTE_W_SPACE_DOT(ex.message());
+  }
+}
+
 int Feed::autoUpdateInterval() const {
   return m_autoUpdateInterval;
 }

src/librssguard/services/abstract/feed.h

@@ -71,6 +71,8 @@ class RSSGUARD_DLLSPEC Feed : public RootItem {
     virtual bool isFetching() const;
     virtual QVariant data(int column, int role) const;
 
+    void purgeArticles();
+
     void setCountOfAllMessages(int count_all_messages);
     void setCountOfUnreadMessages(int count_unread_messages);