From 74aa1ad71e55fde73802508df844ea369001e20c Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Sun, 18 Feb 2018 17:00:14 +0300
Subject: [PATCH] Ungroup all feed channels from context menu.

---
 Telegram/Resources/langs/lang.strings            |  3 +++
 Telegram/SourceFiles/apiwrap.cpp                 | 13 +++++++++++++
 Telegram/SourceFiles/apiwrap.h                   |  1 +
 Telegram/SourceFiles/window/window_peer_menu.cpp | 16 ++++++++++++++++
 Telegram/SourceFiles/window/window_peer_menu.h   |  1 +
 5 files changed, 34 insertions(+)

diff --git a/Telegram/Resources/langs/lang.strings b/Telegram/Resources/langs/lang.strings
index 0d26daeebd..8baad03360 100644
--- a/Telegram/Resources/langs/lang.strings
+++ b/Telegram/Resources/langs/lang.strings
@@ -1429,6 +1429,9 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_feed_channels#one" = "{count} channel";
 "lng_feed_channels#other" = "{count} channels";
 "lng_feed_notifications" = "Feed notifications";
+"lng_feed_ungroup_all" = "Ungroup all channels";
+"lng_feed_sure_ungroup_all" = "Are you sure you want to ungroup all channels from this feed?";
+"lng_feed_ungroup_sure" = "Ungroup";
 
 "lng_info_feed_title" = "Feed Info";
 "lng_info_feed_is_default" = "Group new channels";
diff --git a/Telegram/SourceFiles/apiwrap.cpp b/Telegram/SourceFiles/apiwrap.cpp
index 42a818a833..739df26fb8 100644
--- a/Telegram/SourceFiles/apiwrap.cpp
+++ b/Telegram/SourceFiles/apiwrap.cpp
@@ -203,6 +203,19 @@ void ApiWrap::toggleChannelGrouping(
 	_channelGroupingRequests.emplace(channel, requestId, callback);
 }
 
+void ApiWrap::ungroupAllFromFeed(not_null<Data::Feed*> feed) {
+	const auto flags = MTPchannels_SetFeedBroadcasts::Flag::f_channels
+		| MTPchannels_SetFeedBroadcasts::Flag::f_also_newly_joined;
+	request(MTPchannels_SetFeedBroadcasts(
+		MTP_flags(flags),
+		MTP_int(feed->id()),
+		MTP_vector<MTPInputChannel>(0),
+		MTP_bool(false)
+	)).done([=](const MTPUpdates &result) {
+		applyUpdates(result);
+	}).send();
+}
+
 void ApiWrap::sendMessageFail(const RPCError &error) {
 	if (error.type() == qstr("PEER_FLOOD")) {
 		Ui::show(Box<InformBox>(
diff --git a/Telegram/SourceFiles/apiwrap.h b/Telegram/SourceFiles/apiwrap.h
index 8578aa26fb..6556bafb38 100644
--- a/Telegram/SourceFiles/apiwrap.h
+++ b/Telegram/SourceFiles/apiwrap.h
@@ -60,6 +60,7 @@ public:
 		not_null<ChannelData*> channel,
 		bool group,
 		base::lambda<void()> callback);
+	void ungroupAllFromFeed(not_null<Data::Feed*> feed);
 
 	using RequestMessageDataCallback = base::lambda<void(ChannelData*, MsgId)>;
 	void requestMessageData(
diff --git a/Telegram/SourceFiles/window/window_peer_menu.cpp b/Telegram/SourceFiles/window/window_peer_menu.cpp
index 23ebd9c8a0..f22aace8ba 100644
--- a/Telegram/SourceFiles/window/window_peer_menu.cpp
+++ b/Telegram/SourceFiles/window/window_peer_menu.cpp
@@ -76,6 +76,7 @@ private:
 	void addInfo();
 	void addSearch();
 	void addNotifications();
+	void addUngroup();
 
 	not_null<Controller*> _controller;
 	not_null<Data::Feed*> _feed;
@@ -423,6 +424,7 @@ void FeedFiller::fill() {
 	if (_source == PeerMenuSource::ChatsList) {
 		addSearch();
 	}
+	addUngroup();
 }
 
 bool FeedFiller::showInfo() {
@@ -477,6 +479,13 @@ void FeedFiller::addSearch() {
 	});
 }
 
+void FeedFiller::addUngroup() {
+	const auto feed = _feed;
+	_addAction(lang(lng_feed_ungroup_all), [=] {
+		PeerMenuUngroupFeed(feed);
+	});
+}
+
 } // namespace
 
 void PeerMenuDeleteContact(not_null<UserData*> user) {
@@ -647,6 +656,13 @@ void PeerMenuAddMuteAction(
 	Ui::AttachAsChild(muteAction, std::move(lifetime));
 }
 
+void PeerMenuUngroupFeed(not_null<Data::Feed*> feed) {
+	Ui::show(Box<ConfirmBox>(
+		lang(lng_feed_sure_ungroup_all),
+		lang(lng_feed_ungroup_sure),
+		[=] { Ui::hideLayer(); Auth().api().ungroupAllFromFeed(feed); }));
+}
+
 void ToggleChannelGrouping(not_null<ChannelData*> channel, bool group) {
 	const auto callback = [=] {
 		Ui::Toast::Show(lang(group
diff --git a/Telegram/SourceFiles/window/window_peer_menu.h b/Telegram/SourceFiles/window/window_peer_menu.h
index f3d85ae2a4..4cc0b0bd37 100644
--- a/Telegram/SourceFiles/window/window_peer_menu.h
+++ b/Telegram/SourceFiles/window/window_peer_menu.h
@@ -48,6 +48,7 @@ void PeerMenuDeleteContact(not_null<UserData*> user);
 void PeerMenuShareContactBox(not_null<UserData*> user);
 void PeerMenuAddContact(not_null<UserData*> user);
 void PeerMenuAddChannelMembers(not_null<ChannelData*> channel);
+void PeerMenuUngroupFeed(not_null<Data::Feed*> feed);
 
 void ToggleChannelGrouping(not_null<ChannelData*> channel, bool group);
 base::lambda<void()> ClearHistoryHandler(not_null<PeerData*> peer);