Support custom emoji sticker set in supergroups.

td/generate/scheme/td_api.tl

@@ -1103,13 +1103,14 @@ supergroup id:int53 usernames:usernames date:int32 status:ChatMemberStatus membe
 //-so this option affects only private non-forum supergroups without a linked chat. The value of this field is only available to chat administrators
 //@has_aggressive_anti_spam_enabled True, if aggressive anti-spam checks are enabled in the supergroup. The value of this field is only available to chat administrators
 //@has_pinned_stories True, if the channel has pinned stories
-//@sticker_set_id Identifier of the supergroup sticker set; 0 if none
+//@sticker_set_id Identifier of the supergroup sticker set that must be shown before user sticker sets; 0 if none
+//@custom_emoji_sticker_set_id Identifier of the custom emoji sticker set that can be used in the supergroup without Telegram Premium subscription; 0 if none
 //@location Location to which the supergroup is connected; may be null if none
 //@invite_link Primary invite link for the chat; may be null. For chat administrators with can_invite_users right only
 //@bot_commands List of commands of bots in the group
 //@upgraded_from_basic_group_id Identifier of the basic group from which supergroup was upgraded; 0 if none
 //@upgraded_from_max_message_id Identifier of the last message in the basic group from which supergroup was upgraded; 0 if none
-supergroupFullInfo photo:chatPhoto description:string member_count:int32 administrator_count:int32 restricted_count:int32 banned_count:int32 linked_chat_id:int53 slow_mode_delay:int32 slow_mode_delay_expires_in:double can_get_members:Bool has_hidden_members:Bool can_hide_members:Bool can_set_sticker_set:Bool can_set_location:Bool can_get_statistics:Bool can_toggle_aggressive_anti_spam:Bool is_all_history_available:Bool has_aggressive_anti_spam_enabled:Bool has_pinned_stories:Bool sticker_set_id:int64 location:chatLocation invite_link:chatInviteLink bot_commands:vector<botCommands> upgraded_from_basic_group_id:int53 upgraded_from_max_message_id:int53 = SupergroupFullInfo;
+supergroupFullInfo photo:chatPhoto description:string member_count:int32 administrator_count:int32 restricted_count:int32 banned_count:int32 linked_chat_id:int53 slow_mode_delay:int32 slow_mode_delay_expires_in:double can_get_members:Bool has_hidden_members:Bool can_hide_members:Bool can_set_sticker_set:Bool can_set_location:Bool can_get_statistics:Bool can_toggle_aggressive_anti_spam:Bool is_all_history_available:Bool has_aggressive_anti_spam_enabled:Bool has_pinned_stories:Bool sticker_set_id:int64 custom_emoji_sticker_set_id:int64 location:chatLocation invite_link:chatInviteLink bot_commands:vector<botCommands> upgraded_from_basic_group_id:int53 upgraded_from_max_message_id:int53 = SupergroupFullInfo;
 
 
 //@class SecretChatState @description Describes the current secret chat state
@@ -9368,6 +9369,11 @@ reorderSupergroupActiveUsernames supergroup_id:int53 usernames:vector<string> =
 //@description Changes the sticker set of a supergroup; requires can_change_info administrator right @supergroup_id Identifier of the supergroup @sticker_set_id New value of the supergroup sticker set identifier. Use 0 to remove the supergroup sticker set
 setSupergroupStickerSet supergroup_id:int53 sticker_set_id:int64 = Ok;
 
+//@description Changes the sticker set of a supergroup; requires can_change_info administrator right. The chat must have at least chatBoostFeatures.min_custom_emoji_sticker_set_boost_level boost level to pass the corresponding color
+//@supergroup_id Identifier of the supergroup
+//@custom_emoji_sticker_set_id New value of the custom emoji sticker set identifier for the supergroup. Use 0 to remove the custom emoji sticker set in the supergroup
+setSupergroupCustomEmojiStickerSet supergroup_id:int53 custom_emoji_sticker_set_id:int64 = Ok;
+
 //@description Toggles whether sender signature is added to sent messages in a channel; requires can_change_info administrator right @supergroup_id Identifier of the channel @sign_messages New value of sign_messages
 toggleSupergroupSignMessages supergroup_id:int53 sign_messages:Bool = Ok;
 

td/telegram/ContactsManager.cpp

@@ -1483,6 +1483,56 @@ class SetChannelStickerSetQuery final : public Td::ResultHandler {
   }
 };
 
+class SetChannelEmojiStickerSetQuery final : public Td::ResultHandler {
+  Promise<Unit> promise_;
+  ChannelId channel_id_;
+  StickerSetId sticker_set_id_;
+
+ public:
+  explicit SetChannelEmojiStickerSetQuery(Promise<Unit> &&promise) : promise_(std::move(promise)) {
+  }
+
+  void send(ChannelId channel_id, StickerSetId sticker_set_id,
+            telegram_api::object_ptr<telegram_api::InputStickerSet> &&input_sticker_set) {
+    channel_id_ = channel_id;
+    sticker_set_id_ = sticker_set_id;
+    auto input_channel = td_->contacts_manager_->get_input_channel(channel_id);
+    CHECK(input_channel != nullptr);
+    send_query(G()->net_query_creator().create(
+        telegram_api::channels_setEmojiStickers(std::move(input_channel), std::move(input_sticker_set)),
+        {{channel_id}}));
+  }
+
+  void on_result(BufferSlice packet) final {
+    auto result_ptr = fetch_result<telegram_api::channels_setEmojiStickers>(packet);
+    if (result_ptr.is_error()) {
+      return on_error(result_ptr.move_as_error());
+    }
+
+    bool result = result_ptr.ok();
+    LOG(DEBUG) << "Receive result for SetChannelEmojiStickerSetQuery: " << result;
+    if (!result) {
+      return on_error(Status::Error(500, "Supergroup custom emoji sticker set not updated"));
+    }
+
+    td_->contacts_manager_->on_update_channel_emoji_sticker_set(channel_id_, sticker_set_id_);
+    promise_.set_value(Unit());
+  }
+
+  void on_error(Status status) final {
+    if (status.message() == "CHAT_NOT_MODIFIED") {
+      td_->contacts_manager_->on_update_channel_emoji_sticker_set(channel_id_, sticker_set_id_);
+      if (!td_->auth_manager_->is_bot()) {
+        promise_.set_value(Unit());
+        return;
+      }
+    } else {
+      td_->contacts_manager_->on_get_channel_error(channel_id_, status, "SetChannelEmojiStickerSetQuery");
+    }
+    promise_.set_error(std::move(status));
+  }
+};
+
 class ToggleChannelSignaturesQuery final : public Td::ResultHandler {
   Promise<Unit> promise_;
   ChannelId channel_id_;
@@ -4270,6 +4320,7 @@ void ContactsManager::ChannelFull::store(StorerT &storer) const {
   bool has_invite_link = invite_link.is_valid();
   bool has_bot_commands = !bot_commands.empty();
   bool has_flags2 = true;
+  bool has_emoji_sticker_set = emoji_sticker_set_id.is_valid();
   BEGIN_STORE_FLAGS();
   STORE_FLAG(has_description);
   STORE_FLAG(has_administrator_count);
@@ -4305,6 +4356,7 @@ void ContactsManager::ChannelFull::store(StorerT &storer) const {
   if (has_flags2) {
     BEGIN_STORE_FLAGS();
     STORE_FLAG(has_pinned_stories);
+    STORE_FLAG(has_emoji_sticker_set);
     END_STORE_FLAGS();
   }
   if (has_description) {
@@ -4357,6 +4409,9 @@ void ContactsManager::ChannelFull::store(StorerT &storer) const {
   if (has_bot_commands) {
     store(bot_commands, storer);
   }
+  if (has_emoji_sticker_set) {
+    store(emoji_sticker_set_id, storer);
+  }
 }
 
 template <class ParserT>
@@ -4382,6 +4437,7 @@ void ContactsManager::ChannelFull::parse(ParserT &parser) {
   bool has_invite_link;
   bool has_bot_commands;
   bool has_flags2;
+  bool has_emoji_sticker_set = false;
   BEGIN_PARSE_FLAGS();
   PARSE_FLAG(has_description);
   PARSE_FLAG(has_administrator_count);
@@ -4417,6 +4473,7 @@ void ContactsManager::ChannelFull::parse(ParserT &parser) {
   if (has_flags2) {
     BEGIN_PARSE_FLAGS();
     PARSE_FLAG(has_pinned_stories);
+    PARSE_FLAG(has_emoji_sticker_set);
     END_PARSE_FLAGS();
   }
   if (has_description) {
@@ -4477,6 +4534,9 @@ void ContactsManager::ChannelFull::parse(ParserT &parser) {
   if (has_bot_commands) {
     parse(bot_commands, parser);
   }
+  if (has_emoji_sticker_set) {
+    parse(emoji_sticker_set_id, parser);
+  }
 
   if (legacy_can_view_statistics) {
     LOG(DEBUG) << "Ignore legacy can view statistics flag";
@@ -7261,6 +7321,34 @@ void ContactsManager::set_channel_sticker_set(ChannelId channel_id, StickerSetId
       ->send(channel_id, sticker_set_id, std::move(input_sticker_set));
 }
 
+void ContactsManager::set_channel_emoji_sticker_set(ChannelId channel_id, StickerSetId sticker_set_id,
+                                                    Promise<Unit> &&promise) {
+  auto c = get_channel(channel_id);
+  if (c == nullptr) {
+    return promise.set_error(Status::Error(400, "Supergroup not found"));
+  }
+  if (!c->is_megagroup) {
+    return promise.set_error(Status::Error(400, "Cuctom emoji sticker set can be set only for supergroups"));
+  }
+  if (!get_channel_permissions(c).can_change_info_and_settings()) {
+    return promise.set_error(
+        Status::Error(400, "Not enough rights to change custom emoji sticker set in the supergroup"));
+  }
+
+  telegram_api::object_ptr<telegram_api::InputStickerSet> input_sticker_set;
+  if (!sticker_set_id.is_valid()) {
+    input_sticker_set = telegram_api::make_object<telegram_api::inputStickerSetEmpty>();
+  } else {
+    input_sticker_set = td_->stickers_manager_->get_input_sticker_set(sticker_set_id);
+    if (input_sticker_set == nullptr) {
+      return promise.set_error(Status::Error(400, "Sticker set not found"));
+    }
+  }
+
+  td_->create_handler<SetChannelEmojiStickerSetQuery>(std::move(promise))
+      ->send(channel_id, sticker_set_id, std::move(input_sticker_set));
+}
+
 void ContactsManager::toggle_channel_sign_messages(ChannelId channel_id, bool sign_messages, Promise<Unit> &&promise) {
   auto c = get_channel(channel_id);
   if (c == nullptr) {
@@ -12123,6 +12211,11 @@ void ContactsManager::on_get_chat_full(tl_object_ptr<telegram_api::ChatFull> &&c
       sticker_set_id =
           td_->stickers_manager_->on_get_sticker_set(std::move(channel->stickerset_), true, "on_get_channel_full");
     }
+    StickerSetId emoji_sticker_set_id;
+    if (channel->emojiset_ != nullptr) {
+      emoji_sticker_set_id =
+          td_->stickers_manager_->on_get_sticker_set(std::move(channel->emojiset_), true, "on_get_channel_full");
+    }
     DcId stats_dc_id;
     if ((channel->flags_ & CHANNEL_FULL_FLAG_HAS_STATISTICS_DC_ID) != 0) {
       stats_dc_id = DcId::create(channel->stats_dc_);
@@ -12141,7 +12234,7 @@ void ContactsManager::on_get_chat_full(tl_object_ptr<telegram_api::ChatFull> &&c
         channel_full->can_set_sticker_set != can_set_sticker_set ||
         channel_full->can_set_location != can_set_location ||
         channel_full->can_view_statistics != can_view_statistics || channel_full->stats_dc_id != stats_dc_id ||
-        channel_full->sticker_set_id != sticker_set_id ||
+        channel_full->sticker_set_id != sticker_set_id || channel_full->emoji_sticker_set_id != emoji_sticker_set_id ||
         channel_full->is_all_history_available != is_all_history_available ||
         channel_full->has_aggressive_anti_spam_enabled != has_aggressive_anti_spam_enabled ||
         channel_full->has_hidden_participants != has_hidden_participants ||
@@ -12157,6 +12250,7 @@ void ContactsManager::on_get_chat_full(tl_object_ptr<telegram_api::ChatFull> &&c
       channel_full->can_view_statistics = can_view_statistics;
       channel_full->stats_dc_id = stats_dc_id;
       channel_full->sticker_set_id = sticker_set_id;
+      channel_full->emoji_sticker_set_id = emoji_sticker_set_id;
       channel_full->is_all_history_available = is_all_history_available;
       channel_full->has_aggressive_anti_spam_enabled = has_aggressive_anti_spam_enabled;
       channel_full->has_pinned_stories = has_pinned_stories;
@@ -15461,6 +15555,19 @@ void ContactsManager::on_update_channel_sticker_set(ChannelId channel_id, Sticke
   }
 }
 
+void ContactsManager::on_update_channel_emoji_sticker_set(ChannelId channel_id, StickerSetId sticker_set_id) {
+  CHECK(channel_id.is_valid());
+  auto channel_full = get_channel_full_force(channel_id, true, "on_update_channel_emoji_sticker_set");
+  if (channel_full == nullptr) {
+    return;
+  }
+  if (channel_full->emoji_sticker_set_id != sticker_set_id) {
+    channel_full->emoji_sticker_set_id = sticker_set_id;
+    channel_full->is_changed = true;
+    update_channel_full(channel_full, channel_id, "on_update_channel_emoji_sticker_set");
+  }
+}
+
 void ContactsManager::on_update_channel_linked_channel_id(ChannelId channel_id, ChannelId group_channel_id) {
   if (channel_id.is_valid()) {
     auto channel_full = get_channel_full_force(channel_id, true, "on_update_channel_linked_channel_id 1");
@@ -18060,8 +18167,9 @@ tl_object_ptr<td_api::supergroupFullInfo> ContactsManager::get_supergroup_full_i
       channel_full->can_set_location, channel_full->can_view_statistics,
       can_toggle_channel_aggressive_anti_spam(channel_id, channel_full).is_ok(), channel_full->is_all_history_available,
       channel_full->has_aggressive_anti_spam_enabled, channel_full->has_pinned_stories,
-      channel_full->sticker_set_id.get(), channel_full->location.get_chat_location_object(),
+      channel_full->sticker_set_id.get(), channel_full->emoji_sticker_set_id.get(),
-      channel_full->invite_link.get_chat_invite_link_object(this), std::move(bot_commands),
+      channel_full->location.get_chat_location_object(), channel_full->invite_link.get_chat_invite_link_object(this),
+      std::move(bot_commands),
       get_basic_group_id_object(channel_full->migrated_from_chat_id, "get_supergroup_full_info_object"),
       channel_full->migrated_from_max_message_id.get());
 }

td/telegram/ContactsManager.h

@@ -267,6 +267,7 @@ class ContactsManager final : public Actor {
   void on_update_channel_stories_hidden(ChannelId channel_id, bool stories_hidden);
   void on_update_channel_description(ChannelId channel_id, string &&description);
   void on_update_channel_sticker_set(ChannelId channel_id, StickerSetId sticker_set_id);
+  void on_update_channel_emoji_sticker_set(ChannelId channel_id, StickerSetId sticker_set_id);
   void on_update_channel_linked_channel_id(ChannelId channel_id, ChannelId group_channel_id);
   void on_update_channel_location(ChannelId channel_id, const DialogLocation &location);
   void on_update_channel_slow_mode_delay(ChannelId channel_id, int32 slow_mode_delay, Promise<Unit> &&promise);
@@ -468,6 +469,8 @@ class ContactsManager final : public Actor {
 
   void set_channel_sticker_set(ChannelId channel_id, StickerSetId sticker_set_id, Promise<Unit> &&promise);
 
+  void set_channel_emoji_sticker_set(ChannelId channel_id, StickerSetId sticker_set_id, Promise<Unit> &&promise);
+
   void toggle_channel_sign_messages(ChannelId channel_id, bool sign_messages, Promise<Unit> &&promise);
 
   void toggle_channel_join_to_send(ChannelId channel_id, bool joint_to_send, Promise<Unit> &&promise);
@@ -1044,6 +1047,7 @@ class ContactsManager final : public Actor {
     uint32 repair_request_version = 0;
 
     StickerSetId sticker_set_id;
+    StickerSetId emoji_sticker_set_id;
 
     ChannelId linked_channel_id;
 

td/telegram/Td.cpp

@@ -7796,6 +7796,12 @@ void Td::on_request(uint64 id, const td_api::setSupergroupStickerSet &request) {
                                              std::move(promise));
 }
 
+void Td::on_request(uint64 id, const td_api::setSupergroupCustomEmojiStickerSet &request) {
+  CREATE_OK_REQUEST_PROMISE();
+  contacts_manager_->set_channel_emoji_sticker_set(ChannelId(request.supergroup_id_),
+                                                   StickerSetId(request.custom_emoji_sticker_set_id_), std::move(promise));
+}
+
 void Td::on_request(uint64 id, const td_api::toggleSupergroupSignMessages &request) {
   CHECK_IS_USER();
   CREATE_OK_REQUEST_PROMISE();

td/telegram/Td.h

@@ -1382,6 +1382,8 @@ class Td final : public Actor {
 
   void on_request(uint64 id, const td_api::setSupergroupStickerSet &request);
 
+  void on_request(uint64 id, const td_api::setSupergroupCustomEmojiStickerSet &request);
+
   void on_request(uint64 id, const td_api::toggleSupergroupSignMessages &request);
 
   void on_request(uint64 id, const td_api::toggleSupergroupJoinToSendMessages &request);

td/telegram/cli.cpp

@@ -5762,6 +5762,12 @@ class CliClient final : public Actor {
       get_args(args, supergroup_id, sticker_set_id);
       send_request(
           td_api::make_object<td_api::setSupergroupStickerSet>(as_supergroup_id(supergroup_id), sticker_set_id));
+    } else if (op == "ssgcess") {
+      string supergroup_id;
+      int64 sticker_set_id;
+      get_args(args, supergroup_id, sticker_set_id);
+      send_request(td_api::make_object<td_api::setSupergroupCustomEmojiStickerSet>(as_supergroup_id(supergroup_id),
+                                                                                   sticker_set_id));
     } else if (op == "tsgp") {
       string supergroup_id;
       bool is_all_history_available;