Add some HTML design to export, except messages.

NB Testing the layout, the app is not in a working condition.

Telegram/SourceFiles/mainwidget.cpp

@@ -90,6 +90,15 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "styles/style_history.h"
 #include "styles/style_boxes.h"
 
+#ifdef _DEBUG
+#include "export/output/export_output_html.h"
+#include "export/output/export_output_stats.h"
+#include "export/view/export_view_panel_controller.h"
+#include "platform/platform_specific.h"
+#else
+#error "test"
+#endif
+
 namespace {
 
 bool IsForceLogoutNotification(const MTPDupdateServiceNotification &data) {
@@ -252,6 +261,10 @@ MainWidget::MainWidget(
 	Messenger::Instance().mtp()->setUpdatesHandler(rpcDone(&MainWidget::updateReceived));
 	Messenger::Instance().mtp()->setGlobalFailHandler(rpcFail(&MainWidget::updateFail));
 
+	Export::Output::HtmlWriter writer;
+	writer.produceTestExample(psDownloadPath(), Export::View::PrepareEnvironment());
+	crl::on_main([] { App::quit(); });
+
 	_ptsWaiter.setRequesting(true);
 	updateScrollColors();
 	setupConnectingWidget();