From b3ce27c4eab866d1f8831ea7327ae99cdd9b7ebe Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Tue, 19 Dec 2023 14:38:37 +0300
Subject: [PATCH] Add separate deleteDefaultBackground method.

---
 td/generate/scheme/td_api.tl      |  3 +++
 td/telegram/BackgroundManager.cpp | 11 ++++++-----
 td/telegram/BackgroundManager.h   |  2 ++
 td/telegram/Td.cpp                |  6 ++++++
 td/telegram/Td.h                  |  2 ++
 td/telegram/cli.cpp               |  2 ++
 6 files changed, 21 insertions(+), 5 deletions(-)

diff --git a/td/generate/scheme/td_api.tl b/td/generate/scheme/td_api.tl
index 9a1efe5b6..e1f9ff61c 100644
--- a/td/generate/scheme/td_api.tl
+++ b/td/generate/scheme/td_api.tl
@@ -9143,6 +9143,9 @@ searchBackground name:string = Background;
 //@for_dark_theme Pass true if the background is set for a dark theme
 setDefaultBackground background:InputBackground type:BackgroundType for_dark_theme:Bool = Background;
 
+//@description Deletes default background for chats @for_dark_theme Pass true if the background is deleted for a dark theme
+deleteDefaultBackground for_dark_theme:Bool = Ok;
+
 //@description Returns backgrounds installed by the user @for_dark_theme Pass true to order returned backgrounds for a dark theme
 getInstalledBackgrounds for_dark_theme:Bool = Backgrounds;
 
diff --git a/td/telegram/BackgroundManager.cpp b/td/telegram/BackgroundManager.cpp
index 5e7fec583..090f8741c 100644
--- a/td/telegram/BackgroundManager.cpp
+++ b/td/telegram/BackgroundManager.cpp
@@ -683,11 +683,7 @@ void BackgroundManager::set_background(const td_api::InputBackground *input_back
   TRY_RESULT_PROMISE(promise, type, BackgroundType::get_background_type(background_type, 0));
 
   if (input_background == nullptr) {
-    if (background_type == nullptr) {
-      set_background_id(BackgroundId(), BackgroundType(), for_dark_theme);
-      return promise.set_value(nullptr);
-    }
-    if (type.has_file()) {
+    if (background_type == nullptr || type.has_file()) {
       return promise.set_error(Status::Error(400, "Input background must be non-empty for the background type"));
     }
 
@@ -732,6 +728,11 @@ void BackgroundManager::set_background(const td_api::InputBackground *input_back
   }
 }
 
+void BackgroundManager::delete_background(bool for_dark_theme, Promise<Unit> &&promise) {
+  set_background_id(BackgroundId(), BackgroundType(), for_dark_theme);
+  promise.set_value(Unit());
+}
+
 Result<DialogId> BackgroundManager::get_background_dialog(DialogId dialog_id) {
   if (!td_->messages_manager_->have_dialog_force(dialog_id, "set_dialog_background")) {
     return Status::Error(400, "Chat not found");
diff --git a/td/telegram/BackgroundManager.h b/td/telegram/BackgroundManager.h
index 26173e467..490b95ee1 100644
--- a/td/telegram/BackgroundManager.h
+++ b/td/telegram/BackgroundManager.h
@@ -44,6 +44,8 @@ class BackgroundManager final : public Actor {
   void set_background(const td_api::InputBackground *input_background, const td_api::BackgroundType *background_type,
                       bool for_dark_theme, Promise<td_api::object_ptr<td_api::background>> &&promise);
 
+  void delete_background(bool for_dark_theme, Promise<Unit> &&promise);
+
   void remove_background(BackgroundId background_id, Promise<Unit> &&promise);
 
   void reset_backgrounds(Promise<Unit> &&promise);
diff --git a/td/telegram/Td.cpp b/td/telegram/Td.cpp
index ea7303ce3..2e161ed0b 100644
--- a/td/telegram/Td.cpp
+++ b/td/telegram/Td.cpp
@@ -8790,6 +8790,12 @@ void Td::on_request(uint64 id, td_api::setDefaultBackground &request) {
                                       std::move(promise));
 }
 
+void Td::on_request(uint64 id, const td_api::deleteDefaultBackground &request) {
+  CHECK_IS_USER();
+  CREATE_OK_REQUEST_PROMISE();
+  background_manager_->delete_background(request.for_dark_theme_, std::move(promise));
+}
+
 void Td::on_request(uint64 id, const td_api::removeInstalledBackground &request) {
   CHECK_IS_USER();
   CREATE_OK_REQUEST_PROMISE();
diff --git a/td/telegram/Td.h b/td/telegram/Td.h
index f015e14ed..75c22113f 100644
--- a/td/telegram/Td.h
+++ b/td/telegram/Td.h
@@ -1599,6 +1599,8 @@ class Td final : public Actor {
 
   void on_request(uint64 id, td_api::setDefaultBackground &request);
 
+  void on_request(uint64 id, const td_api::deleteDefaultBackground &request);
+
   void on_request(uint64 id, const td_api::removeInstalledBackground &request);
 
   void on_request(uint64 id, const td_api::resetInstalledBackgrounds &request);
diff --git a/td/telegram/cli.cpp b/td/telegram/cli.cpp
index 38c17baab..7e7c0b7cc 100644
--- a/td/telegram/cli.cpp
+++ b/td/telegram/cli.cpp
@@ -3128,6 +3128,8 @@ class CliClient final : public Actor {
       BackgroundType background_type;
       get_args(args, input_background, background_type);
       send_request(td_api::make_object<td_api::setDefaultBackground>(input_background, background_type, op == "sdbd"));
+    } else if (op == "ddb" || op == "ddbd") {
+      send_request(td_api::make_object<td_api::deleteDefaultBackground>(op == "ddbd"));
     } else if (op == "rib") {
       int64 background_id;
       get_args(args, background_id);