Support generating of public links for comment messages.

GitOrigin-RevId: 68d9a0260e60719f129e05d32fcbf756e93fa5d4

td/generate/scheme/td_api.tl

@@ -3681,8 +3681,9 @@ removeNotificationGroup notification_group_id:int32 max_notification_id:int32 =
 //@description Returns a public HTTPS link to a message. Available only for messages in supergroups and channels with a username
 //@chat_id Identifier of the chat to which the message belongs
 //@message_id Identifier of the message
-//@for_album Pass true if a link for a whole media album should be returned
+//@for_album Pass true to create a link for a whole media album
-getPublicMessageLink chat_id:int53 message_id:int53 for_album:Bool = PublicMessageLink;
+//@for_comment Pass true to create a link to a message as a channel message comment
+getPublicMessageLink chat_id:int53 message_id:int53 for_album:Bool for_comment:Bool = PublicMessageLink;
 
 //@description Returns a private HTTPS link to a message in a chat. Available only for already sent messages in supergroups and channels. The link will work only for members of the chat
 //@chat_id Identifier of the chat to which the message belongs

td/telegram/MessagesManager.cpp

@@ -12298,6 +12298,9 @@ std::pair<DialogId, unique_ptr<MessagesManager::Message>> MessagesManager::creat
       is_active_message_reply_info(dialog_id, reply_info)) {
     top_reply_message_id = message_id;
   }
+  if (top_reply_message_id.is_valid() && dialog_type != DialogType::Channel) {
+    top_reply_message_id = MessageId();
+  }
 
   bool has_forward_info = message_info.forward_header != nullptr;
 
@@ -15306,7 +15309,8 @@ void MessagesManager::get_message_force_from_server(Dialog *d, MessageId message
   LOG(INFO) << "Get " << message_id << " in " << d->dialog_id << " using " << to_string(input_message);
   auto dialog_type = d->dialog_id.get_type();
   auto m = get_message_force(d, message_id, "get_message_force_from_server");
-  if (m == nullptr && message_id.is_valid() && message_id.is_server()) {
+  if (m == nullptr) {
+    if (message_id.is_valid() && message_id.is_server()) {
       if (d->last_new_message_id != MessageId() && message_id > d->last_new_message_id) {
         // message will not be added to the dialog anyway
         if (dialog_type == DialogType::Channel) {
@@ -15333,12 +15337,13 @@ void MessagesManager::get_message_force_from_server(Dialog *d, MessageId message
       if (d->deleted_message_ids.count(message_id) == 0 && dialog_type != DialogType::SecretChat) {
         return get_message_from_server({d->dialog_id, message_id}, std::move(promise), std::move(input_message));
       }
-  } else if (m == nullptr && message_id.is_valid_scheduled() && message_id.is_scheduled_server()) {
+    } else if (message_id.is_valid_scheduled() && message_id.is_scheduled_server()) {
       if (d->deleted_scheduled_server_message_ids.count(message_id.get_scheduled_server_message_id()) == 0 &&
           dialog_type != DialogType::SecretChat && input_message == nullptr) {
         return get_message_from_server({d->dialog_id, message_id}, std::move(promise));
       }
     }
+  }
 
   promise.set_value(Unit());
 }
@@ -15571,42 +15576,95 @@ bool MessagesManager::is_message_edited_recently(FullMessageId full_message_id,
 }
 
 std::pair<string, string> MessagesManager::get_public_message_link(FullMessageId full_message_id, bool for_group,
-                                                                   Promise<Unit> &&promise) {
+                                                                   bool &for_comment, Promise<Unit> &&promise) {
   auto dialog_id = full_message_id.get_dialog_id();
   auto d = get_dialog_force(dialog_id);
   if (d == nullptr) {
-    promise.set_error(Status::Error(6, "Chat not found"));
+    promise.set_error(Status::Error(400, "Chat not found"));
     return {};
   }
   if (!have_input_peer(dialog_id, AccessRights::Read)) {
-    promise.set_error(Status::Error(6, "Can't access the chat"));
+    promise.set_error(Status::Error(400, "Can't access the chat"));
     return {};
   }
   if (dialog_id.get_type() != DialogType::Channel ||
       td_->contacts_manager_->get_channel_username(dialog_id.get_channel_id()).empty()) {
     promise.set_error(Status::Error(
-        6, "Public message links are available only for messages in supergroups and channel chats with a username"));
+        400, "Public message links are available only for messages in supergroups and channel chats with a username"));
     return {};
   }
 
   auto *m = get_message_force(d, full_message_id.get_message_id(), "get_public_message_link");
   if (m == nullptr) {
-    promise.set_error(Status::Error(6, "Message not found"));
+    promise.set_error(Status::Error(400, "Message not found"));
     return {};
   }
   if (m->message_id.is_yet_unsent()) {
-    promise.set_error(Status::Error(6, "Message is yet unsent"));
+    promise.set_error(Status::Error(400, "Message is yet unsent"));
     return {};
   }
   if (m->message_id.is_scheduled()) {
-    promise.set_error(Status::Error(6, "Message is scheduled"));
+    promise.set_error(Status::Error(400, "Message is scheduled"));
     return {};
   }
   if (!m->message_id.is_server()) {
-    promise.set_error(Status::Error(6, "Message is local"));
+    promise.set_error(Status::Error(400, "Message is local"));
     return {};
   }
 
+  if (m->media_album_id == 0) {
+    for_group = true;  // default is true
+  }
+
+  string comment_link;
+  if (!m->top_reply_message_id.is_valid()) {
+    for_comment = false;
+  }
+  if (d->deleted_message_ids.count(m->top_reply_message_id) != 0) {
+    for_comment = false;
+  }
+  if (for_comment) {
+    CHECK(dialog_id.get_type() == DialogType::Channel);  // only channel messages can have top_reply_message_id
+    auto *top_m = get_message_force(d, m->top_reply_message_id, "get_public_message_link");
+    if (top_m == nullptr) {
+      get_message_force_from_server(d, m->top_reply_message_id, std::move(promise));
+      return {};
+    }
+    if (top_m->sender_user_id.is_valid() || top_m->forward_info == nullptr ||
+        !top_m->forward_info->sender_dialog_id.is_valid() || !top_m->forward_info->message_id.is_valid() ||
+        DialogId(td_->contacts_manager_->get_channel_linked_channel_id(dialog_id.get_channel_id())) !=
+            top_m->forward_info->sender_dialog_id) {
+      for_comment = false;
+    } else {
+      auto linked_dialog_id = top_m->forward_info->sender_dialog_id;
+      auto linked_message_id = top_m->forward_info->message_id;
+      auto linked_d = get_dialog(linked_dialog_id);
+      CHECK(linked_d != nullptr);
+      CHECK(linked_dialog_id.get_type() == DialogType::Channel);
+      if (!have_input_peer(linked_dialog_id, AccessRights::Read) ||
+          td_->contacts_manager_->get_channel_username(linked_dialog_id.get_channel_id()).empty() ||
+          linked_d->deleted_message_ids.count(linked_message_id) != 0) {
+        for_comment = false;
+      } else {
+        auto *linked_m = get_message_force(linked_d, linked_message_id, "get_public_message_link");
+        if (linked_m == nullptr) {
+          get_message_force_from_server(linked_d, linked_message_id, std::move(promise));
+          return {};
+        }
+
+        auto it = public_message_links_[for_group].find({linked_dialog_id, linked_message_id});
+        if (it == public_message_links_[for_group].end()) {
+          td_->create_handler<ExportChannelMessageLinkQuery>(std::move(promise))
+              ->send(linked_dialog_id.get_channel_id(), linked_message_id, for_group, false);
+          return {};
+        }
+
+        comment_link = PSTRING() << it->second.first << (it->second.first.find('?') == string::npos ? '?' : '&')
+                                 << "comment_id=" << m->message_id.get_server_message_id().get();
+      }
+    }
+  }
+
   auto it = public_message_links_[for_group].find(full_message_id);
   if (it == public_message_links_[for_group].end()) {
     td_->create_handler<ExportChannelMessageLinkQuery>(std::move(promise))
@@ -15615,7 +15673,11 @@ std::pair<string, string> MessagesManager::get_public_message_link(FullMessageId
   }
 
   promise.set_value(Unit());
+  if (for_comment) {
+    return {std::move(comment_link), it->second.second};
+  } else {
     return it->second;
+  }
 }
 
 void MessagesManager::on_get_public_message_link(FullMessageId full_message_id, bool for_group, string url,
@@ -15628,30 +15690,30 @@ string MessagesManager::get_message_link(FullMessageId full_message_id, Promise<
   auto dialog_id = full_message_id.get_dialog_id();
   auto d = get_dialog_force(dialog_id);
   if (d == nullptr) {
-    promise.set_error(Status::Error(6, "Chat not found"));
+    promise.set_error(Status::Error(400, "Chat not found"));
     return {};
   }
   if (!have_input_peer(dialog_id, AccessRights::Read)) {
-    promise.set_error(Status::Error(6, "Can't access the chat"));
+    promise.set_error(Status::Error(400, "Can't access the chat"));
     return {};
   }
   if (dialog_id.get_type() != DialogType::Channel) {
     promise.set_error(
-        Status::Error(6, "Message links are available only for messages in supergroups and channel chats"));
+        Status::Error(400, "Message links are available only for messages in supergroups and channel chats"));
     return {};
   }
 
   auto *m = get_message_force(d, full_message_id.get_message_id(), "get_message_link");
   if (m == nullptr) {
-    promise.set_error(Status::Error(6, "Message not found"));
+    promise.set_error(Status::Error(400, "Message not found"));
     return {};
   }
   if (m->message_id.is_scheduled()) {
-    promise.set_error(Status::Error(6, "Message is scheduled"));
+    promise.set_error(Status::Error(400, "Message is scheduled"));
     return {};
   }
   if (!m->message_id.is_server()) {
-    promise.set_error(Status::Error(6, "Message is local"));
+    promise.set_error(Status::Error(400, "Message is local"));
     return {};
   }
 

td/telegram/MessagesManager.h

@@ -562,7 +562,7 @@ class MessagesManager : public Actor {
 
   bool is_message_edited_recently(FullMessageId full_message_id, int32 seconds);
 
-  std::pair<string, string> get_public_message_link(FullMessageId full_message_id, bool for_group,
+  std::pair<string, string> get_public_message_link(FullMessageId full_message_id, bool for_group, bool &for_comment,
                                                     Promise<Unit> &&promise);
 
   void on_get_public_message_link(FullMessageId full_message_id, bool for_group, string url, string html);

td/telegram/Td.cpp

@@ -1093,13 +1093,14 @@ class GetMessagesRequest : public RequestOnceActor {
 class GetPublicMessageLinkRequest : public RequestActor<> {
   FullMessageId full_message_id_;
   bool for_group_;
+  bool for_comment_;
 
   string link_;
   string html_;
 
   void do_run(Promise<Unit> &&promise) override {
     std::tie(link_, html_) =
-        td->messages_manager_->get_public_message_link(full_message_id_, for_group_, std::move(promise));
+        td->messages_manager_->get_public_message_link(full_message_id_, for_group_, for_comment_, std::move(promise));
   }
 
   void do_send_result() override {
@@ -1107,10 +1108,13 @@ class GetPublicMessageLinkRequest : public RequestActor<> {
   }
 
  public:
-  GetPublicMessageLinkRequest(ActorShared<Td> td, uint64 request_id, int64 dialog_id, int64 message_id, bool for_group)
+  GetPublicMessageLinkRequest(ActorShared<Td> td, uint64 request_id, int64 dialog_id, int64 message_id, bool for_group,
+                              bool for_comment)
       : RequestActor(std::move(td), request_id)
       , full_message_id_(DialogId(dialog_id), MessageId(message_id))
-      , for_group_(for_group) {
+      , for_group_(for_group)
+      , for_comment_(for_comment) {
+    set_tries(5);  // get top message + get linked channel message + get message HTML + get linked channel message link
   }
 };
 
@@ -5100,7 +5104,8 @@ void Td::on_request(uint64 id, const td_api::getMessages &request) {
 
 void Td::on_request(uint64 id, const td_api::getPublicMessageLink &request) {
   CHECK_IS_USER();
-  CREATE_REQUEST(GetPublicMessageLinkRequest, request.chat_id_, request.message_id_, request.for_album_);
+  CREATE_REQUEST(GetPublicMessageLinkRequest, request.chat_id_, request.message_id_, request.for_album_,
+                 request.for_comment_);
 }
 
 void Td::on_request(uint64 id, const td_api::getMessageLink &request) {

td/telegram/cli.cpp

@@ -2615,10 +2615,12 @@ class CliClient final : public Actor {
       string chat_id;
       string message_id;
       string for_album;
+      string for_comment;
       std::tie(chat_id, args) = split(args);
-      std::tie(message_id, for_album) = split(args);
+      std::tie(message_id, args) = split(args);
+      std::tie(for_album, for_comment) = split(args);
       send_request(td_api::make_object<td_api::getPublicMessageLink>(as_chat_id(chat_id), as_message_id(message_id),
-                                                                     as_bool(for_album)));
+                                                                     as_bool(for_album), as_bool(for_comment)));
     } else if (op == "gmlink") {
       string chat_id;
       string message_id;