Display group avatars and restrict editing to group key holders

tools/chatgui/src/channelsettingsdialog.cpp

@@ -1,5 +1,6 @@
 #include <QCoreApplication>
 #include "channelsettingsdialog.h"
+#include "avatars/groupavatarmanager.h"
 #include "../db/db_manager.h"
 #include "../transport/gui_bridge.h"
 #include "../../lib/mem.h"
@@ -10,6 +11,7 @@ extern "C" {
 #include <QHBoxLayout>
 #include <QPushButton>
 #include <QLabel>
+#include <QFileDialog>
 #include <cstring>
 
 ChannelSettingsDialog::ChannelSettingsDialog(const QString& channelId, DbManager* db, QWidget* parent)
@@ -34,6 +36,36 @@ ChannelSettingsDialog::ChannelSettingsDialog(const QString& channelId, DbManager
     chIdLabel->setWordWrap(true);
     layout->addWidget(chIdLabel);
 
+    if (auto* avatars = GroupAvatarManager::instance()) {
+        auto* preview = new QLabel(this); preview->setFixedSize(64, 64); layout->addWidget(preview);
+        auto* buttons = new QHBoxLayout;
+        auto* upload = new QPushButton(QCoreApplication::translate("ChatGui", "Upload group avatar"), this);
+        auto* remove = new QPushButton(QCoreApplication::translate("ChatGui", "Remove group avatar"), this);
+        upload->setObjectName("uploadGroupAvatar"); remove->setObjectName("removeGroupAvatar");
+        bool hasKey = false;
+        if (db && db->isOpen()) for (const auto& row : db->getChannels())
+            if (row.channelId == channelId) hasKey = row.ed25519_privkey.size() == 32;
+        upload->setEnabled(hasKey); remove->setEnabled(hasKey);
+        auto* info = new QLabel(QCoreApplication::translate("ChatGui", "Group avatar: up to 16 KiB. Changes apply immediately and require the group key."), this);
+        info->setWordWrap(true); auto* result = new QLabel(this); result->setWordWrap(true);
+        buttons->addWidget(upload); buttons->addWidget(remove); layout->addLayout(buttons); layout->addWidget(info); layout->addWidget(result);
+        auto refresh = [avatars, preview, channelId] {
+            const QImage image = avatars->image(channelId);
+            if (image.isNull()) { preview->setPixmap(QPixmap()); preview->setText(QCoreApplication::translate("ChatGui", "No avatar")); }
+            else preview->setPixmap(QPixmap::fromImage(image).scaled(64, 64, Qt::KeepAspectRatio, Qt::SmoothTransformation));
+        };
+        connect(avatars, &GroupAvatarManager::changed, this, [channelId, refresh](const QString& channel) { if (channel == channelId) refresh(); });
+        connect(avatars, &GroupAvatarManager::status, this, [channelId, result, refresh](const QString& channel, const QString& message) {
+            if (channel == channelId) { result->setText(message); refresh(); }
+        });
+        connect(upload, &QPushButton::clicked, this, [this, avatars, channelId] {
+            const QString file = QFileDialog::getOpenFileName(this, QCoreApplication::translate("ChatGui", "Choose avatar"), {},
+                QCoreApplication::translate("ChatGui", "Images (*.png *.jpg *.jpeg *.webp)"));
+            if (!file.isEmpty()) avatars->upload(channelId, file);
+        });
+        connect(remove, &QPushButton::clicked, this, [avatars, channelId] { avatars->remove(channelId); }); refresh();
+    }
+
     layout->addSpacing(8);
 
     m_autoPlayVoice = new QCheckBox(QCoreApplication::translate("ChatGui", "Auto-play voice messages on receive"), this);