Add class StoryInteractionInfo.

CMakeLists.txt

@@ -470,6 +470,7 @@ set(TDLIB_SOURCE
   td/telegram/StorageManager.cpp
   td/telegram/StoryContent.cpp
   td/telegram/StoryContentType.cpp
+  td/telegram/StoryInteractionInfo.cpp
   td/telegram/StoryManager.cpp
   td/telegram/SuggestedAction.cpp
   td/telegram/Support.cpp
@@ -763,6 +764,7 @@ set(TDLIB_SOURCE
   td/telegram/StoryContent.h
   td/telegram/StoryContentType.h
   td/telegram/StoryId.h
+  td/telegram/StoryInteractionInfo.h
   td/telegram/StoryManager.h
   td/telegram/SuggestedAction.h
   td/telegram/Support.h

td/telegram/StoryInteractionInfo.cpp

@@ -0,0 +1,47 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2023
+//
+// 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/StoryInteractionInfo.h"
+
+#include "td/telegram/ContactsManager.h"
+#include "td/telegram/Td.h"
+
+#include "td/utils/logging.h"
+
+namespace td {
+
+StoryInteractionInfo::StoryInteractionInfo(Td *td, telegram_api::object_ptr<telegram_api::storyViews> &&story_views) {
+  if (story_views == nullptr) {
+    return;
+  }
+  for (auto &viewer_id : story_views->recent_viewers_) {
+    UserId user_id(viewer_id);
+    if (user_id.is_valid() && td->contacts_manager_->have_min_user(user_id)) {
+      if (recent_viewer_user_ids_.size() == MAX_RECENT_VIEWERS) {
+        LOG(ERROR) << "Receive too many recent story viewers: " << story_views->recent_viewers_;
+        break;
+      }
+      recent_viewer_user_ids_.push_back(user_id);
+    } else {
+      LOG(ERROR) << "Receive " << user_id << " as recent viewer";
+    }
+  }
+  view_count_ = story_views->views_count_;
+  if (view_count_ < 0) {
+    LOG(ERROR) << "Receive " << view_count_ << " story views";
+    view_count_ = 0;
+  }
+}
+
+bool operator==(const StoryInteractionInfo &lhs, const StoryInteractionInfo &rhs) {
+  return lhs.recent_viewer_user_ids_ == rhs.recent_viewer_user_ids_ && lhs.view_count_ == rhs.view_count_;
+}
+
+StringBuilder &operator<<(StringBuilder &string_builder, const StoryInteractionInfo &info) {
+  return string_builder << info.view_count_ << " views by " << info.recent_viewer_user_ids_;
+}
+
+}  // namespace td

td/telegram/StoryInteractionInfo.h

@@ -0,0 +1,47 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2023
+//
+// 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/telegram_api.h"
+#include "td/telegram/UserId.h"
+
+#include "td/utils/common.h"
+#include "td/utils/StringBuilder.h"
+
+namespace td {
+
+class Td;
+
+class StoryInteractionInfo {
+  vector<UserId> recent_viewer_user_ids_;
+  int32 view_count_ = -1;
+
+  static constexpr size_t MAX_RECENT_VIEWERS = 3;
+
+  friend bool operator==(const StoryInteractionInfo &lhs, const StoryInteractionInfo &rhs);
+
+  friend StringBuilder &operator<<(StringBuilder &string_builder, const StoryInteractionInfo &info);
+
+ public:
+  StoryInteractionInfo() = default;
+
+  StoryInteractionInfo(Td *td, telegram_api::object_ptr<telegram_api::storyViews> &&story_views);
+
+  bool is_empty() const {
+    return view_count_ < 0;
+  }
+};
+
+bool operator==(const StoryInteractionInfo &lhs, const StoryInteractionInfo &rhs);
+
+inline bool operator!=(const StoryInteractionInfo &lhs, const StoryInteractionInfo &rhs) {
+  return !(lhs == rhs);
+}
+
+StringBuilder &operator<<(StringBuilder &string_builder, const StoryInteractionInfo &info);
+
+}  // namespace td

td/telegram/StoryManager.cpp

@@ -63,39 +63,6 @@ StoryId StoryManager::on_get_story(DialogId owner_dialog_id,
     return StoryId();
   }
   auto content_type = content->get_type();
-
-  auto privacy_rules = UserPrivacySettingRules::get_user_privacy_setting_rules(td_, std::move(story_item->privacy_));
-
-  vector<UserId> recent_viewer_user_ids;
-  int32 view_count = 0;
-  if (story_item->views_ != nullptr) {
-    for (auto &viewer_id : story_item->views_->recent_viewers_) {
-      UserId user_id(viewer_id);
-      if (user_id.is_valid() && td_->contacts_manager_->have_min_user(user_id)) {
-        recent_viewer_user_ids.push_back(user_id);
-      } else {
-        LOG(ERROR) << "Receive " << user_id << " as recent viewer in " << story_id;
-      }
-    }
-    view_count = story_item->views_->views_count_;
-  }
-
-  if (story->is_pinned_ != story_item->pinned_ || story->is_public_ != story_item->public_ ||
-      story->is_for_close_friends_ != story_item->close_friends_ || story->date_ != story_item->date_ ||
-      story->expire_date_ != story_item->expire_date_ || !(story->privacy_rules_ == privacy_rules) ||
-      story->recent_viewer_user_ids_ != recent_viewer_user_ids || story->view_count_ != view_count ||
-      story->caption_ != caption) {
-    story->is_pinned_ = story_item->pinned_;
-    story->is_public_ = story_item->public_;
-    story->is_for_close_friends_ = story_item->close_friends_;
-    story->date_ = story_item->date_;
-    story->expire_date_ = story_item->expire_date_;
-    story->privacy_rules_ = std::move(privacy_rules);
-    story->recent_viewer_user_ids_ = std::move(recent_viewer_user_ids);
-    story->view_count_ = view_count;
-    story->caption_ = std::move(caption);
-    is_changed = true;
-  }
   if (story->content_ == nullptr || story->content_->get_type() != content_type) {
     story->content_ = std::move(content);
     is_changed = true;
@@ -104,6 +71,23 @@ StoryId StoryManager::on_get_story(DialogId owner_dialog_id,
                          is_changed);
   }
 
+  auto privacy_rules = UserPrivacySettingRules::get_user_privacy_setting_rules(td_, std::move(story_item->privacy_));
+  auto interaction_info = StoryInteractionInfo(td_, std::move(story_item->views_));
+  if (story->is_pinned_ != story_item->pinned_ || story->is_public_ != story_item->public_ ||
+      story->is_for_close_friends_ != story_item->close_friends_ || story->date_ != story_item->date_ ||
+      story->expire_date_ != story_item->expire_date_ || !(story->privacy_rules_ == privacy_rules) ||
+      story->interaction_info_ != interaction_info || story->caption_ != caption) {
+    story->is_pinned_ = story_item->pinned_;
+    story->is_public_ = story_item->public_;
+    story->is_for_close_friends_ = story_item->close_friends_;
+    story->date_ = story_item->date_;
+    story->expire_date_ = story_item->expire_date_;
+    story->privacy_rules_ = std::move(privacy_rules);
+    story->interaction_info_ = std::move(interaction_info);
+    story->caption_ = std::move(caption);
+    is_changed = true;
+  }
+
   if (is_changed || need_save_to_database) {
     // save_story(story, story_id);
   }

td/telegram/StoryManager.h

@@ -9,6 +9,7 @@
 #include "td/telegram/DialogId.h"
 #include "td/telegram/MessageEntity.h"
 #include "td/telegram/StoryId.h"
+#include "td/telegram/StoryInteractionInfo.h"
 #include "td/telegram/UserId.h"
 #include "td/telegram/UserPrivacySettingRule.h"
 
@@ -40,8 +41,7 @@ class StoryManager final : public Actor {
     bool is_pinned_ = false;
     bool is_public_ = false;
     bool is_for_close_friends_ = false;
-    vector<UserId> recent_viewer_user_ids_;
-    int32 view_count_ = 0;
+    StoryInteractionInfo interaction_info_;
     UserPrivacySettingRules privacy_rules_;
     unique_ptr<StoryContent> content_;
     FormattedText caption_;