Add feature to delete all loaded messages by user

CMakeLists.txt

@@ -15,7 +15,7 @@ find_package(ECM ${KF5_MIN_VERSION} REQUIRED NO_MODULE)
 
 set(CMAKE_MODULE_PATH ${ECM_MODULE_PATH} ${CMAKE_SOURCE_DIR}/cmake)
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 set(KDE_COMPILERSETTINGS_LEVEL 5.84)
@@ -110,6 +110,10 @@ set_package_properties(KQuickImageEditor PROPERTIES
     PURPOSE "Add image editing capability to image attachments"
 )
 
+find_package(QCoro REQUIRED)
+
+qcoro_enable_coroutines()
+
 install(FILES org.kde.neochat.desktop DESTINATION ${KDE_INSTALL_APPDIR})
 install(FILES org.kde.neochat.appdata.xml DESTINATION ${KDE_INSTALL_METAINFODIR})
 install(FILES org.kde.neochat.svg DESTINATION ${KDE_INSTALL_FULL_ICONDIR}/hicolor/scalable/apps)

imports/NeoChat/Dialog/UserDetailDialog.qml

@@ -142,8 +142,19 @@ Kirigami.OverlaySheet {
             }
         }
         Kirigami.BasicListItem {
-            visible: user !== room.localUser
+            visible: user === room.localUser || room.canSendState("redact")
 
+            action: Kirigami.Action {
+                text: i18n("Delete recent messages by this user")
+                icon.name: "delete"
+                icon.color: Kirigami.Theme.negativeTextColor
+                onTriggered: {
+                    room.deleteMessagesByUser(user.id)
+                }
+            }
+        }
+        Kirigami.BasicListItem {
+            visible: user !== room.localUser
             action: Kirigami.Action {
                 text: i18n("Open a private chat")
                 icon.name: "document-send"

src/CMakeLists.txt

@@ -60,7 +60,7 @@ if(NOT ANDROID)
 endif()
 
 target_include_directories(neochat PRIVATE ${CMAKE_BINARY_DIR})
-target_link_libraries(neochat PRIVATE Qt::Quick Qt::Qml Qt::Gui Qt::Network Qt::QuickControls2 KF5::I18n KF5::Kirigami2 KF5::Notifications KF5::ConfigCore KF5::ConfigGui KF5::CoreAddons Quotient cmark::cmark ${QTKEYCHAIN_LIBRARIES})
+target_link_libraries(neochat PRIVATE Qt::Quick Qt::Qml Qt::Gui Qt::Network Qt::QuickControls2 KF5::I18n KF5::Kirigami2 KF5::Notifications KF5::ConfigCore KF5::ConfigGui KF5::CoreAddons Quotient cmark::cmark ${QTKEYCHAIN_LIBRARIES} QCoro::QCoro)
 kconfig_add_kcfg_files(neochat GENERATE_MOC neochatconfig.kcfgc)
 
 if(NEOCHAT_FLATPAK)

src/neochatroom.cpp

@@ -12,10 +12,14 @@
 #include <QTextDocument>
 #include <functional>
 
+#include <qcoro/qcorosignal.h>
+#include <qcoro/task.h>
+
 #include "connection.h"
 #include "csapi/account-data.h"
 #include "csapi/content-repo.h"
 #include "csapi/leaving.h"
+#include "csapi/redaction.h"
 #include "csapi/room_state.h"
 #include "csapi/rooms.h"
 #include "csapi/typing.h"
@@ -720,4 +724,27 @@ QString NeoChatRoom::htmlSafeName() const
 QString NeoChatRoom::htmlSafeDisplayName() const
 {
     return displayName().toHtmlEscaped();
-}
+}
+
+void NeoChatRoom::deleteMessagesByUser(const QString &user)
+{
+    doDeleteMessagesByUser(user);
+}
+
+QCoro::Task<void> NeoChatRoom::doDeleteMessagesByUser(const QString &user)
+{
+    QStringList events;
+    for (const auto &event : messageEvents()) {
+        if (event->senderId() == user && !event->isRedacted() && !event.viewAs<RedactionEvent>() && !event->isStateEvent()) {
+            events += event->id();
+        }
+    }
+    for (const auto &e : events) {
+        auto job = connection()->callApi<RedactEventJob>(id(), QUrl::toPercentEncoding(e), connection()->generateTxnId());
+        co_await qCoro(job, &BaseJob::finished);
+        if (job->error() != BaseJob::Success) {
+            qWarning() << "Error: \"" << job->error() << "\" while deleting messages. Aborting";
+            break;
+        }
+    }
+}

src/neochatroom.h

@@ -15,6 +15,8 @@
 #include <QPointer>
 #include <QTimer>
 
+#include <qcoro/task.h>
+
 #include "neochatuser.h"
 #include "room.h"
 
@@ -137,6 +139,7 @@ private:
     void onRedaction(const RoomEvent &prevEvent, const RoomEvent &after) override;
 
     static QString markdownToHTML(const QString &markdown);
+    QCoro::Task<void> doDeleteMessagesByUser(const QString &user);
 
 private Q_SLOTS:
     void countChanged();
@@ -175,4 +178,5 @@ public Q_SLOTS:
     void addLocalAlias(const QString &alias);
     void removeLocalAlias(const QString &alias);
     void toggleReaction(const QString &eventId, const QString &reaction);
+    void deleteMessagesByUser(const QString &user);
 };