tdesktop/Telegram/SourceFiles/storage/storage_shared_media.h

217 lines
4.9 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org
Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
*/
#pragma once
#include <rpl/event_stream.h>
#include "storage/storage_facade.h"
#include "storage/storage_sparse_ids_list.h"
namespace Storage {
// Allow forward declarations.
enum class SharedMediaType : char {
Photo = 0,
Video = 1,
MusicFile = 2,
File = 3,
VoiceFile = 4,
Link = 5,
ChatPhoto = 6,
RoundVoiceFile = 7,
GIF = 8,
RoundFile = 9,
kCount = 10,
};
constexpr auto kSharedMediaTypeCount = static_cast<int>(SharedMediaType::kCount);
constexpr bool IsValidSharedMediaType(SharedMediaType type) {
return (static_cast<int>(type) >= 0)
&& (static_cast<int>(type) < kSharedMediaTypeCount);
}
using SharedMediaTypesMask = base::enum_mask<SharedMediaType>;
struct SharedMediaAddNew {
SharedMediaAddNew(PeerId peerId, SharedMediaTypesMask types, MsgId messageId)
: peerId(peerId), messageId(messageId), types(types) {
}
PeerId peerId = 0;
MsgId messageId = 0;
SharedMediaTypesMask types;
};
struct SharedMediaAddExisting {
SharedMediaAddExisting(
PeerId peerId,
SharedMediaTypesMask types,
MsgId messageId,
MsgRange noSkipRange)
: peerId(peerId)
, messageId(messageId)
, noSkipRange(noSkipRange)
, types(types) {
}
PeerId peerId = 0;
MsgId messageId = 0;
MsgRange noSkipRange;
SharedMediaTypesMask types;
};
struct SharedMediaAddSlice {
SharedMediaAddSlice(
PeerId peerId,
SharedMediaType type,
std::vector<MsgId> &&messageIds,
MsgRange noSkipRange,
base::optional<int> count = base::none)
: peerId(peerId)
, messageIds(std::move(messageIds))
, noSkipRange(noSkipRange)
, type(type)
, count(count) {
}
PeerId peerId = 0;
std::vector<MsgId> messageIds;
MsgRange noSkipRange;
SharedMediaType type = SharedMediaType::kCount;
base::optional<int> count;
};
struct SharedMediaRemoveOne {
SharedMediaRemoveOne(
PeerId peerId,
SharedMediaTypesMask types,
MsgId messageId)
: peerId(peerId)
, messageId(messageId)
, types(types) {
}
PeerId peerId = 0;
MsgId messageId = 0;
SharedMediaTypesMask types;
};
struct SharedMediaRemoveAll {
SharedMediaRemoveAll(PeerId peerId) : peerId(peerId) {
}
PeerId peerId = 0;
};
struct SharedMediaKey {
SharedMediaKey(
PeerId peerId,
SharedMediaType type,
MsgId messageId)
: peerId(peerId)
, type(type)
, messageId(messageId) {
}
bool operator==(const SharedMediaKey &other) const {
return (peerId == other.peerId)
&& (type == other.type)
&& (messageId == other.messageId);
}
bool operator!=(const SharedMediaKey &other) const {
return !(*this == other);
}
PeerId peerId = 0;
SharedMediaType type = SharedMediaType::kCount;
MsgId messageId = 0;
};
struct SharedMediaQuery {
SharedMediaQuery(
SharedMediaKey key,
int limitBefore,
int limitAfter)
: key(key)
, limitBefore(limitBefore)
, limitAfter(limitAfter) {
}
SharedMediaKey key;
int limitBefore = 0;
int limitAfter = 0;
};
using SharedMediaResult = SparseIdsListResult;
struct SharedMediaSliceUpdate {
SharedMediaSliceUpdate(
PeerId peerId,
SharedMediaType type,
const SparseIdsSliceUpdate &data)
: peerId(peerId)
, type(type)
, data(data) {
}
PeerId peerId = 0;
SharedMediaType type = SharedMediaType::kCount;
SparseIdsSliceUpdate data;
};
class SharedMedia {
public:
using Type = SharedMediaType;
void add(SharedMediaAddNew &&query);
void add(SharedMediaAddExisting &&query);
void add(SharedMediaAddSlice &&query);
void remove(SharedMediaRemoveOne &&query);
void remove(SharedMediaRemoveAll &&query);
rpl::producer<SharedMediaResult> query(SharedMediaQuery &&query) const;
rpl::producer<SharedMediaSliceUpdate> sliceUpdated() const;
rpl::producer<SharedMediaRemoveOne> oneRemoved() const;
rpl::producer<SharedMediaRemoveAll> allRemoved() const;
private:
using Lists = std::array<SparseIdsList, kSharedMediaTypeCount>;
std::map<PeerId, Lists>::iterator enforceLists(PeerId peer);
std::map<PeerId, Lists> _lists;
rpl::event_stream<SharedMediaSliceUpdate> _sliceUpdated;
rpl::event_stream<SharedMediaRemoveOne> _oneRemoved;
rpl::event_stream<SharedMediaRemoveAll> _allRemoved;
rpl::lifetime _lifetime;
};
} // namespace Storage