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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2026
//
// 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/utils/common.h"
#include "td/utils/FlatHashMap.h"
#include "td/utils/Promise.h"
#include "td/utils/Slice.h"
#include "td/utils/Status.h"
#include <queue>
namespace td {
// combines identical queries into one request
class QueryCombiner final : public Actor {
public:
QueryCombiner(Slice name, double min_delay);
void add_query(int64 query_id, Promise<Promise<Unit>> &&send_query, Promise<Unit> &&promise);
private:
struct QueryInfo {
vector<Promise<Unit>> promises;
bool is_sent = false;
Promise<Promise<Unit>> send_query;
};
int32 query_count_ = 0;
double next_query_time_;
double min_delay_;
std::queue<int64> delayed_queries_;
FlatHashMap<int64, QueryInfo> queries_;
void do_send_query(int64 query_id, QueryInfo &query);
void on_get_query_result(int64 query_id, Result<Unit> &&result);
void loop() final;
};
} // namespace td
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