From 1b3cf0a654aae7c97d23379fa8ea7b949cfde2e3 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Fri, 3 Mar 2023 17:37:17 +0400
Subject: [PATCH] Add an "Open App" button for bot app link previews.

---
 Telegram/Resources/langs/lang.strings          |  1 +
 Telegram/SourceFiles/data/data_web_page.cpp    | 12 +++++++-----
 Telegram/SourceFiles/data/data_web_page.h      |  1 +
 .../history/view/history_view_view_button.cpp  | 18 +++++++++++++++---
 4 files changed, 24 insertions(+), 8 deletions(-)

diff --git a/Telegram/Resources/langs/lang.strings b/Telegram/Resources/langs/lang.strings
index b76a04c58..4465a9dae 100644
--- a/Telegram/Resources/langs/lang.strings
+++ b/Telegram/Resources/langs/lang.strings
@@ -3543,6 +3543,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_view_button_bot" = "View bot";
 "lng_view_button_group" = "View group";
 "lng_view_button_channel" = "View channel";
+"lng_view_button_bot_app" = "Open app";
 "lng_view_button_background" = "View background";
 "lng_view_button_theme" = "View theme";
 "lng_view_button_message" = "View message";
diff --git a/Telegram/SourceFiles/data/data_web_page.cpp b/Telegram/SourceFiles/data/data_web_page.cpp
index aac8e8ae6..57b31d0f6 100644
--- a/Telegram/SourceFiles/data/data_web_page.cpp
+++ b/Telegram/SourceFiles/data/data_web_page.cpp
@@ -162,16 +162,18 @@ WebPageType ParseWebPageType(
 	} else if (type == u"telegram_megagroup_request"_q
 		|| type == u"telegram_chat_request"_q) {
 		return WebPageType::GroupWithRequest;
-	}  else if (type == u"telegram_message"_q) {
+	} else if (type == u"telegram_message"_q) {
 		return WebPageType::Message;
-	}  else if (type == u"telegram_bot"_q) {
+	} else if (type == u"telegram_bot"_q) {
 		return WebPageType::Bot;
-	}  else if (type == u"telegram_voicechat"_q) {
+	} else if (type == u"telegram_voicechat"_q) {
 		return WebPageType::VoiceChat;
-	}  else if (type == u"telegram_livestream"_q) {
+	} else if (type == u"telegram_livestream"_q) {
 		return WebPageType::Livestream;
-	}  else if (type == u"telegram_user"_q) {
+	} else if (type == u"telegram_user"_q) {
 		return WebPageType::User;
+	} else if (type == u"telegram_botapp"_q) {
+		return WebPageType::BotApp;
 	} else if (hasIV) {
 		return WebPageType::ArticleWithIV;
 	} else {
diff --git a/Telegram/SourceFiles/data/data_web_page.h b/Telegram/SourceFiles/data/data_web_page.h
index 2655fd7c4..8481a7b3b 100644
--- a/Telegram/SourceFiles/data/data_web_page.h
+++ b/Telegram/SourceFiles/data/data_web_page.h
@@ -31,6 +31,7 @@ enum class WebPageType {
 	User,
 	Bot,
 	Profile,
+	BotApp,
 
 	WallPaper,
 	Theme,
diff --git a/Telegram/SourceFiles/history/view/history_view_view_button.cpp b/Telegram/SourceFiles/history/view/history_view_view_button.cpp
index 0d6f90c47..1a2db4d6b 100644
--- a/Telegram/SourceFiles/history/view/history_view_view_button.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_view_button.cpp
@@ -71,18 +71,29 @@ inline auto WebPageToPhrase(not_null<WebPageData*> webpage) {
 		? tr::lng_view_button_bot(tr::now)
 		: (type == WebPageType::User)
 		? tr::lng_view_button_user(tr::now)
+		: (type == WebPageType::BotApp)
+		? tr::lng_view_button_bot_app(tr::now)
 		: QString());
 }
 
-[[nodiscard]] ClickHandlerPtr MakeWebPageClickHandler(
+[[nodiscard]] ClickHandlerPtr MakeWebPageButtonClickHandler(
 		not_null<Data::Media*> media) {
 	Expects(media->webpage() != nullptr);
 
 	const auto url = media->webpage()->url;
+	const auto type = media->webpage()->type;
 	return std::make_shared<LambdaClickHandler>([=](ClickContext context) {
 		const auto my = context.other.value<ClickHandlerContext>();
 		if (const auto controller = my.sessionWindow.get()) {
-			HiddenUrlClickHandler::Open(url, context.other);
+			if (type == WebPageType::BotApp) {
+				// Bot Web Apps always show confirmation on hidden urls.
+				//
+				// But from the dedicated "Open App" button we don't want
+				// to request users confirmation on non-first app opening.
+				UrlClickHandler::Open(url, context.other);
+			} else {
+				HiddenUrlClickHandler::Open(url, context.other);
+			}
 		}
 	});
 }
@@ -124,6 +135,7 @@ bool ViewButton::MediaHasViewButton(
 		|| (type == WebPageType::User)
 		|| (type == WebPageType::VoiceChat)
 		|| (type == WebPageType::Livestream)
+		|| (type == WebPageType::BotApp)
 		|| ((type == WebPageType::Theme)
 			&& webpage->document
 			&& webpage->document->isTheme())
@@ -160,7 +172,7 @@ ViewButton::Inner::Inner(
 	not_null<Data::Media*> media,
 	Fn<void()> updateCallback)
 : margins(st::historyViewButtonMargins)
-, link(MakeWebPageClickHandler(media))
+, link(MakeWebPageButtonClickHandler(media))
 , updateCallback(std::move(updateCallback))
 , belowInfo(false)
 , text(st::historyViewButtonTextStyle, WebPageToPhrase(media->webpage())) {