From e169cfc7f7eb8dd453b83d8072e618011318ad7a Mon Sep 17 00:00:00 2001
From: levlam <levlam@telegram.org>
Date: Mon, 29 May 2023 20:48:31 +0300
Subject: [PATCH] Add copy_story_content function.

---
 td/telegram/StoryContent.cpp | 23 +++++++++++++++++++++++
 td/telegram/StoryContent.h   |  2 ++
 2 files changed, 25 insertions(+)

diff --git a/td/telegram/StoryContent.cpp b/td/telegram/StoryContent.cpp
index 3501e2e5d..1f1f64777 100644
--- a/td/telegram/StoryContent.cpp
+++ b/td/telegram/StoryContent.cpp
@@ -232,6 +232,29 @@ void merge_story_contents(Td *td, const StoryContent *old_content, StoryContent
   }
 }
 
+unique_ptr<StoryContent> copy_story_content(const StoryContent *content) {
+  if (content == nullptr) {
+    return nullptr;
+  }
+  switch (content->get_type()) {
+    case StoryContentType::Photo: {
+      const auto *story_content = static_cast<const StoryContentPhoto *>(content);
+      return make_unique<StoryContentPhoto>(Photo(story_content->photo_));
+    }
+    case StoryContentType::Video: {
+      const auto *story_content = static_cast<const StoryContentVideo *>(content);
+      return make_unique<StoryContentVideo>(story_content->file_id_, story_content->alt_file_id_);
+    }
+    case StoryContentType::Unsupported: {
+      const auto *story_content = static_cast<const StoryContentUnsupported *>(content);
+      return make_unique<StoryContentUnsupported>(story_content->version_);
+    }
+    default:
+      UNREACHABLE();
+      return nullptr;
+  }
+}
+
 td_api::object_ptr<td_api::StoryContent> get_story_content_object(Td *td, const StoryContent *content) {
   CHECK(content != nullptr);
   switch (content->get_type()) {
diff --git a/td/telegram/StoryContent.h b/td/telegram/StoryContent.h
index 75da89a6c..9b38e2a97 100644
--- a/td/telegram/StoryContent.h
+++ b/td/telegram/StoryContent.h
@@ -43,6 +43,8 @@ telegram_api::object_ptr<telegram_api::InputMedia> get_story_content_input_media
 void merge_story_contents(Td *td, const StoryContent *old_content, StoryContent *new_content, DialogId dialog_id,
                           bool need_merge_files, bool &is_content_changed, bool &need_update);
 
+unique_ptr<StoryContent> copy_story_content(const StoryContent *content);
+
 td_api::object_ptr<td_api::StoryContent> get_story_content_object(Td *td, const StoryContent *content);
 
 FileId get_story_content_any_file_id(const Td *td, const StoryContent *content);