tdlight/td/telegram/FileReferenceManager.h

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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2019
//
// 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/actor/actor.h"
#include "td/actor/PromiseFuture.h"
#include "td/telegram/ChannelId.h"
#include "td/telegram/ChatId.h"
#include "td/telegram/files/FileId.h"
#include "td/telegram/files/FileSourceId.h"
#include "td/telegram/MessageId.h"
#include "td/telegram/SetWithPosition.h"
#include "td/telegram/UserId.h"
#include "td/utils/logging.h"
#include "td/utils/Slice.h"
#include "td/utils/Status.h"
#include "td/utils/Variant.h"
#include <unordered_map>
namespace td {
extern int VERBOSITY_NAME(file_references);
class FileReferenceManager : public Actor {
public:
static bool is_file_reference_error(const Status &error);
FileSourceId create_message_file_source(FullMessageId full_message_id);
FileSourceId create_user_photo_file_source(UserId user_id, int64 photo_id);
FileSourceId create_chat_photo_file_source(ChatId chat_id);
FileSourceId create_channel_photo_file_source(ChannelId channel_id);
FileSourceId create_wallpapers_file_source();
FileSourceId create_web_page_file_source(string url);
FileSourceId create_saved_animations_file_source();
using NodeId = FileId;
void repair_file_reference(NodeId node_id, Promise<> promise);
void add_file_source(NodeId node_id, FileSourceId file_source_id);
void remove_file_source(NodeId node_id, FileSourceId file_source_id);
void merge(NodeId to_node_id, NodeId from_node_id);
private:
struct Destination {
bool empty() const {
return node_id.empty();
}
NodeId node_id;
int64 generation;
};
struct Query {
std::vector<Promise<>> promises;
int32 active_queries{0};
Destination proxy;
int64 generation;
};
struct Node {
SetWithPosition<FileSourceId> file_source_ids;
unique_ptr<Query> query;
};
struct FileSourceMessage {
FullMessageId full_message_id;
};
struct FileSourceUserPhoto {
int64 photo_id;
UserId user_id;
};
struct FileSourceChatPhoto {
ChatId chat_id;
};
struct FileSourceChannelPhoto {
ChannelId channel_id;
};
struct FileSourceWallpapers {
// empty
};
struct FileSourceWebPage {
string url;
};
struct FileSourceSavedAnimations {
// empty
};
using FileSource = Variant<FileSourceMessage, FileSourceUserPhoto, FileSourceChatPhoto, FileSourceChannelPhoto,
FileSourceWallpapers, FileSourceWebPage, FileSourceSavedAnimations>;
vector<FileSource> file_sources_;
int64 query_generation_{0};
std::unordered_map<NodeId, Node, FileIdHash> nodes_;
void run_node(NodeId node);
void send_query(Destination dest, FileSourceId file_source_id);
Destination on_query_result(Destination dest, FileSourceId file_source_id, Status status, int32 sub = 0);
template <class T>
FileSourceId add_file_source_id(T source, Slice source_str);
FileSourceId get_current_file_source_id() const;
};
} // namespace td