From 15caa6f3c66af1c84eee29cbf9454d88e8e8bb28 Mon Sep 17 00:00:00 2001
From: Mikhail Barashkov <git@mbarashkov.ru>
Date: Tue, 2 Jul 2024 11:01:39 +0300
Subject: [PATCH] Save power by adding delay between network requests in
 background.

---
 src/tdlibreceiver.cpp | 11 +++++++++++
 src/tdlibreceiver.h   |  2 ++
 src/tdlibwrapper.cpp  |  7 ++++++-
 src/tdlibwrapper.h    |  1 +
 4 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/tdlibreceiver.cpp b/src/tdlibreceiver.cpp
index 44034c7..fc6d7bd 100644
--- a/src/tdlibreceiver.cpp
+++ b/src/tdlibreceiver.cpp
@@ -81,6 +81,8 @@ namespace {
     const QString TYPE_ANIMATED_EMOJI("animatedEmoji");
     const QString TYPE_INPUT_MESSAGE_REPLY_TO_MESSAGE("inputMessageReplyToMessage");
     const QString TYPE_DRAFT_MESSAGE("draftMessage");
+
+    const double POWERSAVING_TDLIB_REQUEST_INTERVAL = 100;
 }
 
 static QString getChatPositionOrder(const QVariantMap &position)
@@ -191,9 +193,15 @@ void TDLibReceiver::setActive(bool active)
     } else {
         LOG("Deactivating receiver loop, this may take a while...");
     }
+    this->powerSavingMode = false;
     this->isActive = active;
 }
 
+void TDLibReceiver::setPowerSavingMode(bool powerSavingMode)
+{
+    this->powerSavingMode = powerSavingMode;
+}
+
 void TDLibReceiver::receiverLoop()
 {
     LOG("Starting receiver loop");
@@ -205,6 +213,9 @@ void TDLibReceiver::receiverLoop()
           VERBOSE("Raw result:" << receivedJsonDocument.toJson(QJsonDocument::Indented).constData());
           processReceivedDocument(receivedJsonDocument);
       }
+      if(this->powerSavingMode) {
+          msleep(POWERSAVING_TDLIB_REQUEST_INTERVAL);
+      }
     }
     LOG("Stopping receiver loop");
 }
diff --git a/src/tdlibreceiver.h b/src/tdlibreceiver.h
index 33771b6..b235461 100644
--- a/src/tdlibreceiver.h
+++ b/src/tdlibreceiver.h
@@ -35,6 +35,7 @@ class TDLibReceiver : public QThread
 public:
     explicit TDLibReceiver(void *tdLibClient, QObject *parent = nullptr);
     void setActive(bool active);
+    void setPowerSavingMode(bool active);
 
 signals:
     void versionDetected(const QString &version);
@@ -115,6 +116,7 @@ private:
     QHash<QString, Handler> handlers;
     void *tdLibClient;
     bool isActive;
+    bool powerSavingMode;
 
 private:
     static const QVariantList cleanupList(const QVariantList& list, bool *updated = Q_NULLPTR);
diff --git a/src/tdlibwrapper.cpp b/src/tdlibwrapper.cpp
index 70dcf65..bfd8a9b 100644
--- a/src/tdlibwrapper.cpp
+++ b/src/tdlibwrapper.cpp
@@ -22,6 +22,7 @@
 #include <QDir>
 #include <QFile>
 #include <QFileInfo>
+#include <QGuiApplication>
 #include <QLocale>
 #include <QProcess>
 #include <QSysInfo>
@@ -102,7 +103,7 @@ TDLibWrapper::TDLibWrapper(AppSettings *settings, MceInterface *mce, QObject *pa
 
     connect(this->appSettings, SIGNAL(useOpenWithChanged()), this, SLOT(handleOpenWithChanged()));
     connect(this->appSettings, SIGNAL(storageOptimizerChanged()), this, SLOT(handleStorageOptimizerChanged()));
-
+    connect(qGuiApp, SIGNAL(applicationStateChanged(Qt::ApplicationState)), this, SLOT(handleApplicationStateChanged(Qt::ApplicationState)));
     connect(networkConfigurationManager, SIGNAL(configurationChanged(QNetworkConfiguration)), this, SLOT(handleNetworkConfigurationChanged(QNetworkConfiguration)));
 
     this->setLogVerbosityLevel();
@@ -2204,6 +2205,10 @@ void TDLibWrapper::handleGetPageSourceFinished()
     }
 }
 
+void TDLibWrapper::handleApplicationStateChanged(Qt::ApplicationState state) {
+    this->tdLibReceiver->setPowerSavingMode(state != Qt::ApplicationState::ApplicationActive);
+}
+
 QVariantMap& TDLibWrapper::fillTdlibParameters(QVariantMap& parameters)
 {
     parameters.insert("api_id", TDLIB_API_ID);
diff --git a/src/tdlibwrapper.h b/src/tdlibwrapper.h
index 2487ae5..665f676 100644
--- a/src/tdlibwrapper.h
+++ b/src/tdlibwrapper.h
@@ -373,6 +373,7 @@ public slots:
     void handleNetworkConfigurationChanged(const QNetworkConfiguration &config);
     void handleActiveEmojiReactionsUpdated(const QStringList& emojis);
     void handleGetPageSourceFinished();
+    void handleApplicationStateChanged(Qt::ApplicationState state);
 
 private:
     void setOption(const QString &name, const QString &type, const QVariant &value);