From 0a6e012e9076655d30a1e2a755e43099f6d26df1 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Thu, 4 May 2017 15:28:37 +0300
Subject: [PATCH] Add call debug window on Ctrl+Click Show Info.

It is available only when debug logs are enabled.
---
 Telegram/SourceFiles/calls/calls.style       |  4 ++
 Telegram/SourceFiles/calls/calls_call.cpp    |  9 ++++
 Telegram/SourceFiles/calls/calls_call.h      |  2 +
 Telegram/SourceFiles/calls/calls_top_bar.cpp | 50 +++++++++++++++++++-
 4 files changed, 64 insertions(+), 1 deletion(-)

diff --git a/Telegram/SourceFiles/calls/calls.style b/Telegram/SourceFiles/calls/calls.style
index a3b027629..aa798f111 100644
--- a/Telegram/SourceFiles/calls/calls.style
+++ b/Telegram/SourceFiles/calls/calls.style
@@ -184,3 +184,7 @@ callRatingComment: InputField(defaultInputField) {
 	heightMax: 135px;
 }
 callRatingCommentTop: 2px;
+
+callDebugLabel: FlatLabel(defaultFlatLabel) {
+	margin: margins(24px, 0px, 24px, 0px);
+}
diff --git a/Telegram/SourceFiles/calls/calls_call.cpp b/Telegram/SourceFiles/calls/calls_call.cpp
index e81c8377b..7416a426b 100644
--- a/Telegram/SourceFiles/calls/calls_call.cpp
+++ b/Telegram/SourceFiles/calls/calls_call.cpp
@@ -225,6 +225,15 @@ void Call::redial() {
 	_delegate->callRedial(this);
 }
 
+QString Call::getDebugLog() const {
+	constexpr auto kDebugLimit = 4096;
+	auto bytes = base::byte_vector(kDebugLimit, gsl::byte {});
+	_controller->GetDebugString(reinterpret_cast<char*>(bytes.data()), bytes.size());
+	auto end = std::find(bytes.begin(), bytes.end(), gsl::byte {});
+	auto size = (end - bytes.begin());
+	return QString::fromUtf8(reinterpret_cast<const char*>(bytes.data()), size);
+}
+
 void Call::startWaitingTrack() {
 	_waitingTrack = Media::Audio::Current().createTrack();
 	auto trackFileName = (_type == Type::Outgoing) ? qsl(":/sounds/call_outgoing.mp3") : qsl(":/sounds/call_incoming.mp3");
diff --git a/Telegram/SourceFiles/calls/calls_call.h b/Telegram/SourceFiles/calls/calls_call.h
index 88bd7e954..e9999cba4 100644
--- a/Telegram/SourceFiles/calls/calls_call.h
+++ b/Telegram/SourceFiles/calls/calls_call.h
@@ -119,6 +119,8 @@ public:
 	bool isKeyShaForFingerprintReady() const;
 	std::array<gsl::byte, kSha256Size> getKeyShaForFingerprint() const;
 
+	QString getDebugLog() const;
+
 	~Call();
 
 private:
diff --git a/Telegram/SourceFiles/calls/calls_top_bar.cpp b/Telegram/SourceFiles/calls/calls_top_bar.cpp
index 88357fce3..04fbb9e53 100644
--- a/Telegram/SourceFiles/calls/calls_top_bar.cpp
+++ b/Telegram/SourceFiles/calls/calls_top_bar.cpp
@@ -26,8 +26,52 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 #include "lang.h"
 #include "calls/calls_call.h"
 #include "calls/calls_instance.h"
+#include "styles/style_boxes.h"
+#include "boxes/abstract_box.h"
+#include "base/timer.h"
 
 namespace Calls {
+namespace {
+
+constexpr auto kUpdateDebugTimeoutMs = TimeMs(500);
+
+class DebugInfoBox : public BoxContent {
+public:
+	DebugInfoBox(QWidget*, base::weak_unique_ptr<Call> call);
+
+protected:
+	void prepare() override;
+
+private:
+	void updateText();
+
+	base::weak_unique_ptr<Call> _call;
+	QPointer<Ui::FlatLabel> _text;
+	base::Timer _updateTextTimer;
+
+};
+
+DebugInfoBox::DebugInfoBox(QWidget*, base::weak_unique_ptr<Call> call) : _call(call) {
+}
+
+void DebugInfoBox::prepare() {
+	setTitle("Call Debug");
+	addButton(lang(lng_close), [this] { closeBox(); });
+	_text = setInnerWidget(object_ptr<Ui::FlatLabel>(this, st::callDebugLabel));
+	_text->setSelectable(true);
+	updateText();
+	_updateTextTimer.setCallback([this] { updateText(); });
+	_updateTextTimer.callEach(kUpdateDebugTimeoutMs);
+	setDimensions(st::boxWideWidth, st::boxMaxListHeight);
+}
+
+void DebugInfoBox::updateText() {
+	if (auto call = _call.get()) {
+		_text->setText(call->getDebugLog());
+	}
+}
+
+} // namespace
 
 TopBar::TopBar(QWidget *parent, const base::weak_unique_ptr<Call> &call) : TWidget(parent)
 , _call(call)
@@ -52,7 +96,11 @@ void TopBar::initControls() {
 	});
 	_info->setClickedCallback([this] {
 		if (auto call = _call.get()) {
-			Current().showInfoPanel(call);
+			if (cDebug() && (_info->clickModifiers() & Qt::ControlModifier)) {
+				Ui::show(Box<DebugInfoBox>(_call));
+			} else {
+				Current().showInfoPanel(call);
+			}
 		}
 	});
 	_hangup->setClickedCallback([this] {