From 32e533aba0272ae351b33d32440f6c41252427bc Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Tue, 23 Jun 2026 15:44:48 +0400
Subject: [PATCH] Show limit-reached message on community peers limit

---
 Telegram/Resources/langs/lang.strings         |  2 ++
 Telegram/SourceFiles/api/api_communities.cpp  |  7 +++++++
 Telegram/SourceFiles/api/api_communities.h    |  4 ++++
 .../boxes/peers/add_to_community_box.cpp      |  5 +++++
 .../peers/community_pending_requests_box.cpp  | 21 +++++++++++++++++--
 5 files changed, 37 insertions(+), 2 deletions(-)

diff --git a/Telegram/Resources/langs/lang.strings b/Telegram/Resources/langs/lang.strings
index 36c06df9cc..60b9d35e61 100644
--- a/Telegram/Resources/langs/lang.strings
+++ b/Telegram/Resources/langs/lang.strings
@@ -2288,6 +2288,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_community_admin_dismiss_title" = "Dismiss yourself as community admin";
 "lng_community_admin_dismiss_text" = "You'll lose access to community admin tools, but keep your group admin rights.";
 "lng_community_removed_list_about" = "Users removed from the community will be shown here.";
+"lng_community_peers_limit#one" = "Limit of {count} chat reached.";
+"lng_community_peers_limit#other" = "Limit of {count} chats reached.";
 
 "lng_manage_monoforum" = "Direct Messages";
 "lng_manage_monoforum_off" = "Off";
diff --git a/Telegram/SourceFiles/api/api_communities.cpp b/Telegram/SourceFiles/api/api_communities.cpp
index 4293f46918..e5bc0b94a8 100644
--- a/Telegram/SourceFiles/api/api_communities.cpp
+++ b/Telegram/SourceFiles/api/api_communities.cpp
@@ -13,6 +13,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_session.h"
 #include "data/data_user.h"
 #include "history/history.h"
+#include "main/main_app_config.h"
 #include "main/main_session.h"
 
 namespace Api {
@@ -47,6 +48,12 @@ namespace {
 
 } // namespace
 
+int CommunityPeersLimit(not_null<Main::Session*> session) {
+	return session->appConfig().get<int>(
+		u"community_peers_limit"_q,
+		session->isTestMode() ? 10 : 100);
+}
+
 Communities::Communities(not_null<ApiWrap*> api)
 : _session(&api->session())
 , _api(&api->instance()) {
diff --git a/Telegram/SourceFiles/api/api_communities.h b/Telegram/SourceFiles/api/api_communities.h
index b38edee500..e01f12315a 100644
--- a/Telegram/SourceFiles/api/api_communities.h
+++ b/Telegram/SourceFiles/api/api_communities.h
@@ -22,6 +22,8 @@ namespace Api {
 
 inline constexpr auto kCommunityRequestCreated
 	= "COMMUNITY_REQUEST_CREATED"_cs;
+inline constexpr auto kCommunityPeersTooMuch
+	= "COMMUNITY_PEERS_TOO_MUCH"_cs;
 
 struct CommunityPeerRequest {
 	not_null<PeerData*> peer;
@@ -126,4 +128,6 @@ private:
 
 };
 
+[[nodiscard]] int CommunityPeersLimit(not_null<Main::Session*> session);
+
 } // namespace Api
diff --git a/Telegram/SourceFiles/boxes/peers/add_to_community_box.cpp b/Telegram/SourceFiles/boxes/peers/add_to_community_box.cpp
index 2885a24247..d8eb1cf657 100644
--- a/Telegram/SourceFiles/boxes/peers/add_to_community_box.cpp
+++ b/Telegram/SourceFiles/boxes/peers/add_to_community_box.cpp
@@ -245,6 +245,11 @@ void ShowAddPeerToCommunity(
 						show->hideLayer();
 						show->showToast(
 							tr::lng_community_request_sent(tr::now));
+					} else if (error == Api::kCommunityPeersTooMuch.utf16()) {
+						show->showToast(tr::lng_community_peers_limit(
+							tr::now,
+							lt_count,
+							Api::CommunityPeersLimit(&community->session())));
 					} else {
 						show->showToast(error.isEmpty()
 							? Lang::Hard::ServerError()
diff --git a/Telegram/SourceFiles/boxes/peers/community_pending_requests_box.cpp b/Telegram/SourceFiles/boxes/peers/community_pending_requests_box.cpp
index f55248f19b..eea01ebad9 100644
--- a/Telegram/SourceFiles/boxes/peers/community_pending_requests_box.cpp
+++ b/Telegram/SourceFiles/boxes/peers/community_pending_requests_box.cpp
@@ -806,7 +806,15 @@ void Controller::performNow(const std::shared_ptr<PendingAction> &action) {
 			}
 		}),
 		crl::guard(this, [=](const QString &error) {
-			delegate()->peerListUiShow()->showToast(error);
+			const auto show = delegate()->peerListUiShow();
+			if (error == Api::kCommunityPeersTooMuch.utf16()) {
+				show->showToast(tr::lng_community_peers_limit(
+					tr::now,
+					lt_count,
+					Api::CommunityPeersLimit(&session())));
+			} else {
+				show->showToast(error);
+			}
 		}));
 }
 
@@ -953,7 +961,16 @@ void ShowCommunityPendingRequestsBox(
 								count));
 					}),
 					crl::guard(box, [=](const QString &error) {
-						box->uiShow()->showToast(error);
+						const auto show = box->uiShow();
+						if (error == Api::kCommunityPeersTooMuch.utf16()) {
+							show->showToast(tr::lng_community_peers_limit(
+								tr::now,
+								lt_count,
+								Api::CommunityPeersLimit(
+									&community->session())));
+						} else {
+							show->showToast(error);
+						}
 					}));
 			};
 			box->uiShow()->showBox(Ui::MakeConfirmBox({