Don't autodownload files if sandbox prevents it.

Partially fixes #25308.

Telegram/SourceFiles/core/application.cpp

@@ -587,6 +587,12 @@ void Application::saveSettings() {
 	Local::writeSettings();
 }
 
+bool Application::canSaveFileWithoutAskingForPath() const {
+	return !Core::App().settings().askDownloadPath()
+		&& (!KSandbox::isInside()
+			|| !Core::App().settings().downloadPath().isEmpty());
+}
+
 MTP::Config &Application::fallbackProductionConfig() const {
 	if (!_fallbackProductionConfig) {
 		_fallbackProductionConfig = std::make_unique<MTP::Config>(

Telegram/SourceFiles/core/application.h

@@ -178,6 +178,7 @@ public:
 	[[nodiscard]] Settings &settings();
 	void saveSettingsDelayed(crl::time delay = kDefaultSaveDelay);
 	void saveSettings();
+	[[nodiscard]] bool canSaveFileWithoutAskingForPath() const;
 
 	// Fallback config and proxy.
 	[[nodiscard]] MTP::Config &fallbackProductionConfig() const;

Telegram/SourceFiles/data/data_document.cpp

@@ -1118,7 +1118,7 @@ bool DocumentData::saveFromData() {
 
 bool DocumentData::saveFromDataSilent() {
 	return !filepath(true).isEmpty()
-		|| (!Core::App().settings().askDownloadPath()
+		|| (Core::App().canSaveFileWithoutAskingForPath()
 			&& saveFromDataChecked());
 }
 

Telegram/SourceFiles/data/data_document_media.cpp

@@ -291,7 +291,7 @@ void DocumentMedia::automaticLoad(
 		return;
 	}
 	const auto toCache = _owner->saveToCache();
-	if (!toCache && Core::App().settings().askDownloadPath()) {
+	if (!toCache && !Core::App().canSaveFileWithoutAskingForPath()) {
 		// We need a filename, but we're supposed to ask user for it.
 		// No automatic download in this case.
 		return;