Add store/parse_background.

td/telegram/BackgroundManager.cpp

@@ -20,7 +20,6 @@
 #include "td/telegram/files/FileManager.h"
 #include "td/telegram/files/FileType.h"
 #include "td/telegram/Global.h"
-#include "td/telegram/logevent/LogEvent.h"
 #include "td/telegram/Photo.h"
 #include "td/telegram/Td.h"
 #include "td/telegram/TdDb.h"
@@ -412,6 +411,34 @@ void BackgroundManager::tear_down() {
   parent_.reset();
 }
 
+void BackgroundManager::store_background(BackgroundId background_id, LogEventStorerCalcLength &storer) {
+  const auto *background = get_background(background_id);
+  CHECK(background != nullptr);
+  store(*background, storer);
+}
+
+void BackgroundManager::store_background(BackgroundId background_id, LogEventStorerUnsafe &storer) {
+  const auto *background = get_background(background_id);
+  CHECK(background != nullptr);
+  store(*background, storer);
+}
+
+void BackgroundManager::parse_background(BackgroundId &background_id, LogEventParser &parser) {
+  Background background;
+  parse(background, parser);
+  CHECK(background.has_new_local_id);
+  if (background.file_id.is_valid() != background.type.has_file() || !background.id.is_valid()) {
+    parser.set_error(PSTRING() << "Failed to load " << background.id);
+    background_id = BackgroundId();
+    return;
+  }
+  if (background.id.is_local() && !background.type.has_file() && background.id.get() > max_local_background_id_.get()) {
+    set_max_local_background_id(background.id);
+  }
+  background_id = background.id;
+  add_background(background, false);
+}
+
 void BackgroundManager::get_backgrounds(bool for_dark_theme,
                                         Promise<td_api::object_ptr<td_api::backgrounds>> &&promise) {
   pending_get_backgrounds_queries_.emplace_back(for_dark_theme, std::move(promise));

td/telegram/BackgroundManager.h

@@ -10,6 +10,7 @@
 #include "td/telegram/BackgroundType.h"
 #include "td/telegram/files/FileId.h"
 #include "td/telegram/files/FileSourceId.h"
+#include "td/telegram/logevent/LogEvent.h"
 #include "td/telegram/Photo.h"
 #include "td/telegram/td_api.h"
 #include "td/telegram/telegram_api.h"
@@ -65,6 +66,12 @@ class BackgroundManager final : public Actor {
 
   void get_current_state(vector<td_api::object_ptr<td_api::Update>> &updates) const;
 
+  void store_background(BackgroundId background_id, LogEventStorerCalcLength &storer);
+
+  void store_background(BackgroundId background_id, LogEventStorerUnsafe &storer);
+
+  void parse_background(BackgroundId &background_id, LogEventParser &parser);
+
  private:
   struct Background {
     BackgroundId id;