Try to hangup current call when quitting the app.

Telegram/SourceFiles/apiwrap.cpp

@@ -25,6 +25,7 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 #include "lang.h"
 #include "application.h"
 #include "mainwindow.h"
+#include "messenger.h"
 #include "mainwidget.h"
 #include "historywidget.h"
 #include "storage/localstorage.h"
@@ -46,8 +47,7 @@ constexpr auto kSmallDelayMs = 5;
 ApiWrap::ApiWrap()
 : _messageDataResolveDelayed([this] { resolveMessageDatas(); })
 , _webPagesTimer([this] { resolveWebPages(); })
-, _draftsSaveTimer([this] { saveDraftsToCloud(); })
-, _quitSavingDraftsTimer([] { App::allDraftsSaved(); }) {
+, _draftsSaveTimer([this] { saveDraftsToCloud(); }) {
 	Window::Theme::Background()->start();
 }
 
@@ -985,10 +985,6 @@ void ApiWrap::saveDraftToCloudDelayed(History *history) {
 	}
 }
 
-bool ApiWrap::hasUnsavedDrafts() const {
-	return !_draftsSaveRequestIds.isEmpty();
-}
-
 void ApiWrap::savePrivacy(const MTPInputPrivacyKey &key, QVector<MTPInputPrivacyRule> &&rules) {
 	auto keyTypeId = key.type();
 	auto it = _privacySaveRequests.find(keyTypeId);
@@ -1144,9 +1140,7 @@ void ApiWrap::saveDraftsToCloud() {
 			auto i = _draftsSaveRequestIds.find(history);
 			if (i != _draftsSaveRequestIds.cend() && i.value() == requestId) {
 				_draftsSaveRequestIds.remove(history);
-				if (_draftsSaveRequestIds.isEmpty()) {
-					App::allDraftsSaved(); // can quit the application
-				}
+				checkQuitPreventFinished();
 			}
 		}).fail([this, history](const RPCError &error, mtpRequestId requestId) {
 			if (auto cloudDraft = history->cloudDraft()) {
@@ -1157,18 +1151,29 @@ void ApiWrap::saveDraftsToCloud() {
 			auto i = _draftsSaveRequestIds.find(history);
 			if (i != _draftsSaveRequestIds.cend() && i.value() == requestId) {
 				_draftsSaveRequestIds.remove(history);
-				if (_draftsSaveRequestIds.isEmpty()) {
-					App::allDraftsSaved(); // can quit the application
-				}
+				checkQuitPreventFinished();
 			}
 		}).send();
 
 		i.value() = cloudDraft->saveRequestId;
 	}
+}
+
+bool ApiWrap::isQuitPrevent() {
 	if (_draftsSaveRequestIds.isEmpty()) {
-		App::allDraftsSaved(); // can quit the application
-	} else if (App::quitting() && !_quitSavingDraftsTimer.isActive()) {
-		_quitSavingDraftsTimer.callOnce(kSaveDraftBeforeQuitTimeout);
+		return false;
+	}
+	LOG(("ApiWrap prevents quit, saving drafts..."));
+	saveDraftsToCloud();
+	return true;
+}
+
+void ApiWrap::checkQuitPreventFinished() {
+	if (_draftsSaveRequestIds.isEmpty()) {
+		if (App::quitting()) {
+			LOG(("ApiWrap doesn't prevent quit any more."));
+		}
+		Messenger::Instance().quitPreventFinished();
 	}
 }
 

Telegram/SourceFiles/apiwrap.h

@@ -74,9 +74,7 @@ public:
 	void exportInviteLink(PeerData *peer);
 	void requestNotifySetting(PeerData *peer);
 
-	void saveDraftsToCloud();
 	void saveDraftToCloudDelayed(History *history);
-	bool hasUnsavedDrafts() const;
 
 	void savePrivacy(const MTPInputPrivacyKey &key, QVector<MTPInputPrivacyRule> &&rules);
 	void handlePrivacyChange(mtpTypeId keyTypeId, const MTPVector<MTPPrivacyRule> &rules);
@@ -86,6 +84,8 @@ public:
 		return _fullPeerUpdated;
 	}
 
+	bool isQuitPrevent();
+
 	~ApiWrap();
 
 private:
@@ -97,6 +97,9 @@ private:
 	using MessageDataRequests = QMap<MsgId, MessageDataRequest>;
 
 	void updatesReceived(const MTPUpdates &updates);
+	void checkQuitPreventFinished();
+
+	void saveDraftsToCloud();
 
 	void resolveMessageDatas();
 	void gotMessageDatas(ChannelData *channel, const MTPmessages_Messages &result, mtpRequestId requestId);
@@ -147,7 +150,6 @@ private:
 
 	QMap<History*, mtpRequestId> _draftsSaveRequestIds;
 	base::Timer _draftsSaveTimer;
-	base::Timer _quitSavingDraftsTimer;
 
 	OrderedSet<mtpRequestId> _stickerSetDisenableRequests;
 	Stickers::Order _stickersOrder;

Telegram/SourceFiles/app.cpp

@@ -2463,25 +2463,13 @@ namespace {
 		if (auto mainwidget = main()) {
 			mainwidget->saveDraftToCloud();
 		}
-		if (auto apiwrap = api()) {
-			if (apiwrap->hasUnsavedDrafts()) {
-				apiwrap->saveDraftsToCloud();
-				return;
-			}
-		}
-		QCoreApplication::quit();
+		Messenger::QuitAttempt();
 	}
 
 	bool quitting() {
 		return _launchState != Launched;
 	}
 
-	void allDraftsSaved() {
-		if (quitting()) {
-			QCoreApplication::quit();
-		}
-	}
-
 	LaunchState launchState() {
 		return _launchState;
 	}

Telegram/SourceFiles/app.h

@@ -234,7 +234,6 @@ namespace App {
 	};
 	void quit();
 	bool quitting();
-	void allDraftsSaved();
 	LaunchState launchState();
 	void setLaunchState(LaunchState state);
 	void restart();

Telegram/SourceFiles/calls/calls_instance.cpp

@@ -21,6 +21,7 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 #include "calls/calls_instance.h"
 
 #include "mtproto/connection.h"
+#include "messenger.h"
 #include "auth_session.h"
 #include "apiwrap.h"
 #include "lang.h"
@@ -70,6 +71,11 @@ void Instance::destroyCall(gsl::not_null<Call*> call) {
 		_currentCallPanel.reset();
 		_currentCall.reset();
 		_currentCallChanged.notify(nullptr, true);
+
+		if (App::quitting()) {
+			LOG(("Calls::Instance doesn't prevent quit any more."));
+		}
+		Messenger::Instance().quitPreventFinished();
 	}
 }
 
@@ -201,6 +207,18 @@ void Instance::showInfoPanel(gsl::not_null<Call*> call) {
 	}
 }
 
+bool Instance::isQuitPrevent() {
+	if (!_currentCall) {
+		return false;
+	}
+	_currentCall->hangup();
+	if (!_currentCall) {
+		return false;
+	}
+	LOG(("Calls::Instance prevents quit, saving drafts..."));
+	return true;
+}
+
 void Instance::handleCallUpdate(const MTPPhoneCall &call) {
 	if (call.type() == mtpc_phoneCallRequested) {
 		auto &phoneCall = call.c_phoneCallRequested();

Telegram/SourceFiles/calls/calls_instance.h

@@ -43,6 +43,8 @@ public:
 		return _newServiceMessage;
 	}
 
+	bool isQuitPrevent();
+
 	~Instance();
 
 private:

Telegram/SourceFiles/messenger.cpp

@@ -20,12 +20,15 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 */
 #include "messenger.h"
 
+#include "base/timer.h"
 #include "storage/localstorage.h"
 #include "platform/platform_specific.h"
 #include "mainwindow.h"
 #include "application.h"
 #include "shortcuts.h"
 #include "auth_session.h"
+#include "apiwrap.h"
+#include "calls/calls_instance.h"
 #include "langloaderplain.h"
 #include "observer_peer.h"
 #include "storage/file_upload.h"
@@ -42,6 +45,8 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 
 namespace {
 
+constexpr auto kQuitPreventTimeoutMs = 1500;
+
 Messenger *SingleInstance = nullptr;
 
 } // namespace
@@ -55,6 +60,7 @@ struct Messenger::Private {
 	std::unique_ptr<Local::StoredAuthSession> storedAuthSession;
 	MTP::Instance::Config mtpConfig;
 	MTP::AuthKeysList mtpKeysToDestroy;
+	base::Timer quitTimer;
 };
 
 Messenger::Messenger() : QObject()
@@ -791,3 +797,33 @@ QPoint Messenger::getPointForCallPanelCenter() const {
 	}
 	return _window->windowHandle()->screen()->geometry().center();
 }
+
+void Messenger::QuitAttempt() {
+	auto prevents = false;
+	if (!Sandbox::isSavingSession() && AuthSession::Exists()) {
+		if (AuthSession::Current().api().isQuitPrevent()) {
+			prevents = true;
+		}
+		if (AuthSession::Current().calls().isQuitPrevent()) {
+			prevents = true;
+		}
+	}
+	if (prevents) {
+		Instance().quitDelayed();
+	} else {
+		QCoreApplication::quit();
+	}
+}
+
+void Messenger::quitPreventFinished() {
+	if (App::quitting()) {
+		QuitAttempt();
+	}
+}
+
+void Messenger::quitDelayed() {
+	if (!_private->quitTimer.isActive()) {
+		_private->quitTimer.setCallback([] { QCoreApplication::quit(); });
+		_private->quitTimer.callOnce(kQuitPreventTimeoutMs);
+	}
+}

Telegram/SourceFiles/messenger.h

@@ -22,6 +22,10 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 
 #include "base/observer.h"
 
+namespace App {
+void quit();
+} // namespace App
+
 namespace MTP {
 class DcOptions;
 class Instance;
@@ -120,6 +124,8 @@ public:
 		return _passcodedChanged;
 	}
 
+	void quitPreventFinished();
+
 	void handleAppActivated();
 	void handleAppDeactivated();
 
@@ -149,6 +155,10 @@ private:
 	void startLocalStorage();
 	void loadLanguage();
 
+	friend void App::quit();
+	static void QuitAttempt();
+	void quitDelayed();
+
 	QMap<FullMsgId, PeerId> photoUpdates;
 
 	QMap<MTP::DcId, TimeMs> killDownloadSessionTimes;