Add MessageTtlSetting class.

CMakeLists.txt

@@ -340,6 +340,7 @@ set(TDLIB_SOURCE
   td/telegram/MessagesDb.cpp
   td/telegram/MessageSearchFilter.cpp
   td/telegram/MessagesManager.cpp
+  td/telegram/MessageTtlSetting.cpp
   td/telegram/misc.cpp
   td/telegram/net/AuthDataShared.cpp
   td/telegram/net/ConnectionCreator.cpp
@@ -520,6 +521,7 @@ set(TDLIB_SOURCE
   td/telegram/MessagesDb.h
   td/telegram/MessageSearchFilter.h
   td/telegram/MessagesManager.h
+  td/telegram/MessageTtlSetting.h
   td/telegram/misc.h
   td/telegram/net/AuthDataShared.h
   td/telegram/net/ConnectionCreator.h

td/telegram/MessageTtlSetting.cpp

@@ -0,0 +1,27 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2021
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+#include "td/telegram/MessageTtlSetting.h"
+
+namespace td {
+
+bool MessageTtlSetting::is_empty() const {
+  return ttl_period_ == 0;
+}
+
+int32 MessageTtlSetting::get_message_ttl_setting_object() const {
+  return ttl_period_;
+}
+
+bool operator==(const MessageTtlSetting &lhs, const MessageTtlSetting &rhs) {
+  return lhs.ttl_period_ == rhs.ttl_period_;
+}
+
+StringBuilder &operator<<(StringBuilder &string_builder, const MessageTtlSetting &message_ttl_setting) {
+  return string_builder << "MessageTtlSetting[" << message_ttl_setting.ttl_period_ << "]";
+}
+
+}  // namespace td

td/telegram/MessageTtlSetting.h

@@ -0,0 +1,57 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2021
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+#pragma once
+
+#include "td/telegram/td_api.h"
+#include "td/telegram/telegram_api.h"
+
+#include "td/utils/common.h"
+#include "td/utils/StringBuilder.h"
+#include "td/utils/tl_helpers.h"
+
+namespace td {
+
+class MessageTtlSetting {
+  int32 ttl_period_ = 0;
+
+  friend StringBuilder &operator<<(StringBuilder &string_builder, const MessageTtlSetting &message_ttl_setting);
+
+  friend bool operator==(const MessageTtlSetting &lhs, const MessageTtlSetting &rhs);
+
+ public:
+  MessageTtlSetting() = default;
+
+  template <class T, typename = std::enable_if_t<std::is_convertible<T, int32>::value>>
+  MessageTtlSetting(T ttl_period) = delete;
+
+  explicit MessageTtlSetting(int32 ttl_period) : ttl_period_(ttl_period) {
+  }
+
+  bool is_empty() const;
+
+  int32 get_message_ttl_setting_object() const;
+
+  template <class StorerT>
+  void store(StorerT &storer) const {
+    td::store(ttl_period_, storer);
+  }
+
+  template <class ParserT>
+  void parse(ParserT &parser) {
+    td::parse(ttl_period_, parser);
+  }
+};
+
+bool operator==(const MessageTtlSetting &lhs, const MessageTtlSetting &rhs);
+
+inline bool operator!=(const MessageTtlSetting &lhs, const MessageTtlSetting &rhs) {
+  return !(lhs == rhs);
+}
+
+StringBuilder &operator<<(StringBuilder &string_builder, const MessageTtlSetting &message_ttl_setting);
+
+}  // namespace td