tdlight/td/telegram/files/FileId.h

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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2020
//
// 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/utils/common.h"
#include "td/utils/StringBuilder.h"
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#include <ctime>
#include <functional>
#include <type_traits>
namespace td {
class FileId {
int32 id = 0;
int32 remote_id = 0;
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int64 time_ = INT64_MAX;
public:
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FileId() {
set_time();
}
FileId(int32 file_id, int32 remote_id) : id(file_id), remote_id(remote_id) {
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set_time();
}
template <class T1, class T2, typename = std::enable_if_t<std::is_convertible<T1, int32>::value>,
typename = std::enable_if_t<std::is_convertible<T2, int32>::value>>
FileId(T1 file_id, T2 remote_id) = delete;
bool empty() const {
return id <= 0;
}
bool is_valid() const {
return id > 0;
}
int32 get() const {
return id;
}
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void set_time() {
time_ = std::time(nullptr);
}
int64 get_time() const {
return time_;
}
void reset_time() {
time_ = INT64_MAX;
}
int32 get_remote() const {
return remote_id;
}
bool operator<(const FileId &other) const {
return id < other.id;
}
bool operator==(const FileId &other) const {
return id == other.id;
}
bool operator!=(const FileId &other) const {
return id != other.id;
}
};
struct FileIdHash {
std::size_t operator()(FileId file_id) const {
return std::hash<int32>()(file_id.get());
}
};
inline StringBuilder &operator<<(StringBuilder &string_builder, FileId file_id) {
return string_builder << file_id.get() << "(" << file_id.get_remote() << ")";
}
} // namespace td