feat: news and notifications page (#1660)

* Add news and notifications

* Add localization for news and notifications

* Remove news caching

* Add fetching news befor openning news page

* Fix not updating news page

* Delete debug output

* Remove news and notificztions with only self-hosted servers

* Add stack filters to fetching news request

* Add fetching news with changing stack in the client

* small refactoring

* polishing

* Rename newsModel files and fix naming in code

* fix: remove custom signals; fetch news only on stack expansion

* chore: delete unnecessary code

* chore: code style fixes

* fix: fixed memory leak in gateway controller

---------

Co-authored-by: vkamn <vk@amnezia.org>

client/ui/controllers/api/apiNewsController.cpp

@@ -0,0 +1,65 @@
+#include "apiNewsController.h"
+
+#include "core/api/apiUtils.h"
+#include <QJsonDocument>
+#include <QJsonObject>
+
+namespace
+{
+    namespace configKey
+    {
+        constexpr char userCountryCode[] = "user_country_code";
+        constexpr char serviceType[] = "service_type";
+    }
+}
+
+ApiNewsController::ApiNewsController(const QSharedPointer<NewsModel> &newsModel, const std::shared_ptr<Settings> &settings,
+                                     const QSharedPointer<ServersModel> &serversModel, QObject *parent)
+    : QObject(parent), m_newsModel(newsModel), m_settings(settings), m_serversModel(serversModel)
+{
+}
+
+void ApiNewsController::fetchNews()
+{
+    if (m_serversModel.isNull()) {
+        qWarning() << "ServersModel is null, skip fetchNews";
+        return;
+    }
+    const auto stacks = m_serversModel->gatewayStacks();
+    if (stacks.isEmpty()) {
+        qDebug() << "No Gateway stacks, skip fetchNews";
+        return;
+    }
+    GatewayController gatewayController(m_settings->getGatewayEndpoint(), m_settings->isDevGatewayEnv(), apiDefs::requestTimeoutMsecs,
+                                        m_settings->isStrictKillSwitchEnabled());
+    QByteArray responseBody;
+    QJsonObject payload;
+    payload.insert("locale", m_settings->getAppLanguage().name().split("_").first());
+
+    const QJsonObject stacksJson = stacks.toJson();
+    if (stacksJson.contains(configKey::userCountryCode)) {
+        payload.insert(configKey::userCountryCode, stacksJson.value(configKey::userCountryCode));
+    }
+    if (stacksJson.contains(configKey::serviceType)) {
+        payload.insert(configKey::serviceType, stacksJson.value(configKey::serviceType));
+    }
+
+    ErrorCode errorCode = gatewayController.post(QString("%1v1/news"), payload, responseBody);
+    if (errorCode != ErrorCode::NoError) {
+        emit errorOccurred(errorCode);
+        return;
+    }
+
+    QJsonDocument doc = QJsonDocument::fromJson(responseBody);
+    QJsonArray newsArray;
+    if (doc.isArray()) {
+        newsArray = doc.array();
+    } else if (doc.isObject()) {
+        QJsonObject obj = doc.object();
+        if (obj.value("news").isArray()) {
+            newsArray = obj.value("news").toArray();
+        }
+    }
+
+    m_newsModel->updateModel(newsArray);
+}

client/ui/controllers/api/apiNewsController.h

@@ -0,0 +1,33 @@
+#ifndef APINEWSCONTROLLER_H
+#define APINEWSCONTROLLER_H
+
+#include <QJsonArray>
+#include <QObject>
+#include <QSharedPointer>
+#include <memory>
+
+#include "core/api/apiDefs.h"
+#include "core/controllers/gatewayController.h"
+#include "settings.h"
+#include "ui/models/newsModel.h"
+#include "ui/models/servers_model.h"
+
+class ApiNewsController : public QObject
+{
+    Q_OBJECT
+public:
+    explicit ApiNewsController(const QSharedPointer<NewsModel> &newsModel, const std::shared_ptr<Settings> &settings,
+                               const QSharedPointer<ServersModel> &serversModel, QObject *parent = nullptr);
+
+    Q_INVOKABLE void fetchNews();
+
+signals:
+    void errorOccurred(ErrorCode errorCode);
+
+private:
+    QSharedPointer<NewsModel> m_newsModel;
+    std::shared_ptr<Settings> m_settings;
+    QSharedPointer<ServersModel> m_serversModel;
+};
+
+#endif // APINEWSCONTROLLER_H

client/ui/controllers/pageController.h

@@ -26,6 +26,8 @@ namespace PageLoader
         PageSettingsConnection,
         PageSettingsDns,
         PageSettingsApplication,
+        PageSettingsNewsNotifications,
+        PageSettingsNewsDetail,
         PageSettingsBackup,
         PageSettingsAbout,
         PageSettingsLogging,