Add td_api::setDefaultMessageTtl.

td/generate/scheme/td_api.tl

@@ -3649,6 +3649,10 @@ userPrivacySettingAllowPrivateVoiceAndVideoNoteMessages = UserPrivacySetting;
 accountTtl days:int32 = AccountTtl;
 
 
+//@description Contains default message Time To Live setting (self-destruct timer) for new chats @ttl Message TTL setting, in seconds
+messageTtl ttl:int32 = MessageTtl;
+
+
 //@class SessionType @description Represents the type of a session
 
 //@description The session is running on an Android device
@@ -6593,6 +6597,10 @@ getAccountTtl = AccountTtl;
 deleteAccount reason:string password:string = Ok;
 
 
+//@description Changes the default message Time To Live setting (self-destruct timer) for new chats @ttl New account TTL; must be from 0 up to 365 * 86400 and be divisible by 86400
+setDefaultMessageTtl ttl:messageTtl = Ok;
+
+
 //@description Removes a chat action bar without any other action @chat_id Chat identifier
 removeChatActionBar chat_id:int53 = Ok;
 

td/telegram/Account.cpp

@@ -109,6 +109,36 @@ static td_api::object_ptr<td_api::session> convert_authorization_object(
       authorization->country_, authorization->region_);
 }
 
+class SetDefaultHistoryTtlQuery final : public Td::ResultHandler {
+  Promise<Unit> promise_;
+
+ public:
+  explicit SetDefaultHistoryTtlQuery(Promise<Unit> &&promise) : promise_(std::move(promise)) {
+  }
+
+  void send(int32 account_ttl) {
+    send_query(G()->net_query_creator().create(telegram_api::messages_setDefaultHistoryTTL(account_ttl), {{"me"}}));
+  }
+
+  void on_result(BufferSlice packet) final {
+    auto result_ptr = fetch_result<telegram_api::messages_setDefaultHistoryTTL>(packet);
+    if (result_ptr.is_error()) {
+      return on_error(result_ptr.move_as_error());
+    }
+
+    bool result = result_ptr.move_as_ok();
+    if (!result) {
+      return on_error(Status::Error(500, "Internal Server Error: failed to set default message TTL"));
+    }
+
+    promise_.set_value(Unit());
+  }
+
+  void on_error(Status status) final {
+    promise_.set_error(std::move(status));
+  }
+};
+
 class SetAccountTtlQuery final : public Td::ResultHandler {
   Promise<Unit> promise_;
 
@@ -531,6 +561,10 @@ class SetBotBroadcastDefaultAdminRightsQuery final : public Td::ResultHandler {
   }
 };
 
+void set_default_message_ttl(Td *td, int32 message_ttl, Promise<Unit> &&promise) {
+  td->create_handler<SetDefaultHistoryTtlQuery>(std::move(promise))->send(message_ttl);
+}
+
 void set_account_ttl(Td *td, int32 account_ttl, Promise<Unit> &&promise) {
   td->create_handler<SetAccountTtlQuery>(std::move(promise))->send(account_ttl);
 }

td/telegram/Account.h

@@ -16,6 +16,8 @@ namespace td {
 
 class Td;
 
+void set_default_message_ttl(Td *td, int32 message_ttl, Promise<Unit> &&promise);
+
 void set_account_ttl(Td *td, int32 account_ttl, Promise<Unit> &&promise);
 
 void get_account_ttl(Td *td, Promise<int32> &&promise);

td/telegram/Td.cpp

@@ -4462,6 +4462,15 @@ void Td::on_request(uint64 id, td_api::setUserPrivacySettingRules &request) {
                std::move(promise));
 }
 
+void Td::on_request(uint64 id, const td_api::setDefaultMessageTtl &request) {
+  CHECK_IS_USER();
+  if (request.ttl_ == nullptr) {
+    return send_error_raw(id, 400, "New default message TTL must be non-empty");
+  }
+  CREATE_OK_REQUEST_PROMISE();
+  set_default_message_ttl(this, request.ttl_->ttl_, std::move(promise));
+}
+
 void Td::on_request(uint64 id, const td_api::getAccountTtl &request) {
   CHECK_IS_USER();
   CREATE_REQUEST_PROMISE();

td/telegram/Td.h

@@ -470,6 +470,8 @@ class Td final : public Actor {
 
   void on_request(uint64 id, td_api::setUserPrivacySettingRules &request);
 
+  void on_request(uint64 id, const td_api::setDefaultMessageTtl &request);
+
   void on_request(uint64 id, const td_api::getAccountTtl &request);
 
   void on_request(uint64 id, const td_api::setAccountTtl &request);

td/telegram/cli.cpp

@@ -2518,6 +2518,10 @@ class CliClient final : public Actor {
       send_request(td_api::make_object<td_api::setOption>(name, td_api::make_object<td_api::optionValueString>(value)));
     } else if (op == "me") {
       send_request(td_api::make_object<td_api::getMe>());
+    } else if (op == "sdmttl") {
+      int32 ttl;
+      get_args(args, ttl);
+      send_request(td_api::make_object<td_api::setDefaultMessageTtl>(td_api::make_object<td_api::messageTtl>(ttl)));
     } else if (op == "sattl") {
       int32 days;
       get_args(args, days);