Respect boosts restrictions lifting.

Telegram/Resources/langs/lang.strings

@@ -1742,8 +1742,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_action_giveaway_results#other" = "{count} winners of the giveaway were randomly selected by Telegram and received private messages with giftcodes.";
 "lng_action_giveaway_results_some" = "Some winners of the giveaway were randomly selected by Telegram and received private messages with giftcodes.";
 "lng_action_giveaway_results_none" = "No winners of the giveaway could be selected.";
-"lng_action_boost_apply#one" = "{from} boosted the group.";
-"lng_action_boost_apply#other" = "{from} boosted the group {count} times.";
+"lng_action_boost_apply#one" = "{from} boosted the group";
+"lng_action_boost_apply#other" = "{from} boosted the group {count} times";
 
 "lng_similar_channels_title" = "Similar channels";
 "lng_similar_channels_view_all" = "View all";

Telegram/SourceFiles/boxes/peers/edit_peer_permissions_box.cpp

@@ -889,7 +889,7 @@ void AddBoostsUnrestrictLabels(
 			labels,
 			st::boostsUnrestrictLabel);
 		label->setMarkedText(
-			TextWithEntities(i ? one : many).append(QString::number(i + 1)),
+			TextWithEntities(i ? many : one).append(QString::number(i + 1)),
 			context);
 		rpl::combine(
 			labels->widthValue(),

Telegram/SourceFiles/data/data_channel.cpp

@@ -787,7 +787,10 @@ void ChannelData::setSlowmodeSeconds(int seconds) {
 }
 
 TimeId ChannelData::slowmodeLastMessage() const {
-	return (hasAdminRights() || amCreator() || !mgInfo)
+	return (hasAdminRights()
+		|| amCreator()
+		|| unrestrictedByBoosts()
+		|| !mgInfo)
 		? 0
 		: mgInfo->slowmodeLastMessage;
 }
@@ -822,20 +825,36 @@ int ChannelData::boostsUnrestrict() const {
 	return 0;
 }
 
+bool ChannelData::unrestrictedByBoosts() const {
+	if (const auto info = mgInfo.get()) {
+		return (info->boostsUnrestrict > 0)
+			&& (info->boostsApplied >= info->boostsUnrestrict);
+	}
+	return 0;
+}
+
+rpl::producer<bool> ChannelData::unrestrictedByBoostsValue() const {
+	return mgInfo
+		? mgInfo->unrestrictedByBoostsChanges.events_starting_with(
+			unrestrictedByBoosts())
+		: (rpl::single(false) | rpl::type_erased());
+}
+
 void ChannelData::setBoostsUnrestrict(int applied, int unrestrict) {
 	if (const auto info = mgInfo.get()) {
 		if (info->boostsApplied == applied
 			&& info->boostsUnrestrict == unrestrict) {
 			return;
 		}
-		const auto wasUnrestricted = (info->boostsApplied > 0)
-			&& (info->boostsApplied >= info->boostsUnrestrict);
-		const auto nowUnrestricted = (applied > 0)
-			&& (applied >= unrestrict);
+		const auto wasUnrestricted = unrestrictedByBoosts();
 		info->boostsApplied = applied;
 		info->boostsUnrestrict = unrestrict;
+		const auto nowUnrestricted = unrestrictedByBoosts();
 		if (wasUnrestricted != nowUnrestricted) {
-			session().changes().peerUpdated(this, UpdateFlag::Rights);
+			info->unrestrictedByBoostsChanges.fire_copy(nowUnrestricted);
+			session().changes().peerUpdated(
+				this,
+				UpdateFlag::Rights | UpdateFlag::Slowmode);
 		}
 	}
 }

Telegram/SourceFiles/data/data_channel.h

@@ -114,6 +114,7 @@ public:
 	base::flat_map<not_null<UserData*>, Restricted> lastRestricted;
 	base::flat_set<not_null<PeerData*>> markupSenders;
 	base::flat_set<not_null<UserData*>> bots;
+	rpl::event_stream<bool> unrestrictedByBoostsChanges;
 
 	// For admin badges, full admins list with ranks.
 	base::flat_map<UserId, QString> admins;
@@ -440,6 +441,7 @@ public:
 	[[nodiscard]] int boostsApplied() const;
 	[[nodiscard]] int boostsUnrestrict() const;
 	[[nodiscard]] bool unrestrictedByBoosts() const;
+	[[nodiscard]] rpl::producer<bool> unrestrictedByBoostsValue() const;
 	void setBoostsUnrestrict(int applied, int unrestrict);
 
 	void setInvitePeek(const QString &hash, TimeId expires);

Telegram/SourceFiles/data/data_peer.cpp

@@ -1122,7 +1122,8 @@ Data::RestrictionCheckResult PeerData::amRestricted(
 				: ChatRestrictions(0));
 		return (channel->amCreator() || allowByAdminRights(right, channel))
 			? Result::Allowed()
-			: (defaultRestrictions & right)
+			: ((defaultRestrictions & right)
+				&& !channel->unrestrictedByBoosts())
 			? Result::WithEveryone()
 			: (channel->restrictions() & right)
 			? Result::Explicit()

Telegram/SourceFiles/data/data_peer_values.cpp

@@ -267,11 +267,13 @@ inline auto DefaultRestrictionValue(
 			AdminRightValue(
 				channel,
 				ChatAdminRight::PostMessages),
+			channel->unrestrictedByBoostsValue(),
 			RestrictionsValue(channel, rights),
 			DefaultRestrictionsValue(channel, rights),
 			[=](
 					ChannelDataFlags flags,
 					bool postMessagesRight,
+					bool unrestrictedByBoosts,
 					ChatRestrictions sendRestriction,
 					ChatRestrictions defaultSendRestriction) {
 				const auto notAmInFlags = Flag::Left | Flag::Forbidden;
@@ -281,7 +283,7 @@ inline auto DefaultRestrictionValue(
 					|| ((flags & Flag::HasLink)
 						&& !(flags & Flag::JoinToWrite));
 				const auto restricted = sendRestriction
-					| defaultSendRestriction;
+					| (defaultSendRestriction && !unrestrictedByBoosts);
 				return allowed
 					&& !forumRestriction
 					&& (postMessagesRight