tdesktop/Telegram/SourceFiles/data/data_search_controller.cpp

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/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "data/data_search_controller.h"
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#include "main/main_session.h"
#include "data/data_session.h"
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#include "data/data_messages.h"
#include "data/data_channel.h"
#include "data/data_histories.h"
#include "history/history.h"
#include "history/history_item.h"
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#include "apiwrap.h"
namespace Api {
namespace {
constexpr auto kSharedMediaLimit = 100;
constexpr auto kDefaultSearchTimeoutMs = crl::time(200);
} // namespace
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std::optional<MTPmessages_Search> PrepareSearchRequest(
not_null<PeerData*> peer,
Storage::SharedMediaType type,
const QString &query,
MsgId messageId,
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Data::LoadDirection direction) {
const auto filter = [&] {
using Type = Storage::SharedMediaType;
switch (type) {
case Type::Photo:
return MTP_inputMessagesFilterPhotos();
case Type::Video:
return MTP_inputMessagesFilterVideo();
case Type::PhotoVideo:
return MTP_inputMessagesFilterPhotoVideo();
case Type::MusicFile:
return MTP_inputMessagesFilterMusic();
case Type::File:
return MTP_inputMessagesFilterDocument();
case Type::VoiceFile:
return MTP_inputMessagesFilterVoice();
case Type::RoundVoiceFile:
return MTP_inputMessagesFilterRoundVoice();
case Type::RoundFile:
return MTP_inputMessagesFilterRoundVideo();
case Type::GIF:
return MTP_inputMessagesFilterGif();
case Type::Link:
return MTP_inputMessagesFilterUrl();
case Type::ChatPhoto:
return MTP_inputMessagesFilterChatPhotos();
}
return MTP_inputMessagesFilterEmpty();
}();
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if (query.isEmpty() && filter.type() == mtpc_inputMessagesFilterEmpty) {
return std::nullopt;
}
const auto minId = 0;
const auto maxId = 0;
const auto limit = messageId ? kSharedMediaLimit : 0;
const auto offsetId = [&] {
switch (direction) {
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case Data::LoadDirection::Before:
case Data::LoadDirection::Around: return messageId;
case Data::LoadDirection::After: return messageId + 1;
}
Unexpected("Direction in PrepareSearchRequest");
}();
const auto addOffset = [&] {
switch (direction) {
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case Data::LoadDirection::Before: return 0;
case Data::LoadDirection::Around: return -limit / 2;
case Data::LoadDirection::After: return -limit;
}
Unexpected("Direction in PrepareSearchRequest");
}();
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const auto hash = int32(0);
return MTPmessages_Search(
MTP_flags(0),
peer->input,
MTP_string(query),
MTP_inputUserEmpty(),
filter,
MTP_int(0),
MTP_int(0),
MTP_int(offsetId),
MTP_int(addOffset),
MTP_int(limit),
MTP_int(maxId),
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MTP_int(minId),
MTP_int(hash));
}
SearchResult ParseSearchResult(
not_null<PeerData*> peer,
Storage::SharedMediaType type,
MsgId messageId,
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Data::LoadDirection direction,
const MTPmessages_Messages &data) {
auto result = SearchResult();
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result.noSkipRange = MsgRange{ messageId, messageId };
auto messages = [&] {
switch (data.type()) {
case mtpc_messages_messages: {
auto &d = data.c_messages_messages();
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peer->owner().processUsers(d.vusers());
peer->owner().processChats(d.vchats());
result.fullCount = d.vmessages().v.size();
return &d.vmessages().v;
} break;
case mtpc_messages_messagesSlice: {
auto &d = data.c_messages_messagesSlice();
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peer->owner().processUsers(d.vusers());
peer->owner().processChats(d.vchats());
result.fullCount = d.vcount().v;
return &d.vmessages().v;
} break;
case mtpc_messages_channelMessages: {
auto &d = data.c_messages_channelMessages();
if (auto channel = peer->asChannel()) {
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channel->ptsReceived(d.vpts().v);
} else {
LOG(("API Error: received messages.channelMessages when "
"no channel was passed! (ParseSearchResult)"));
}
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peer->owner().processUsers(d.vusers());
peer->owner().processChats(d.vchats());
result.fullCount = d.vcount().v;
return &d.vmessages().v;
} break;
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case mtpc_messages_messagesNotModified: {
LOG(("API Error: received messages.messagesNotModified! "
"(ParseSearchResult)"));
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return (const QVector<MTPMessage>*)nullptr;
} break;
}
Unexpected("messages.Messages type in ParseSearchResult()");
}();
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if (!messages) {
return result;
}
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const auto addType = NewMessageType::Existing;
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result.messageIds.reserve(messages->size());
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for (const auto &message : *messages) {
const auto item = peer->owner().addNewMessage(
message,
MTPDmessage_ClientFlags(),
addType);
if (item) {
const auto itemId = item->id;
if ((type == Storage::SharedMediaType::kCount)
|| item->sharedMediaTypes().test(type)) {
result.messageIds.push_back(itemId);
}
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accumulate_min(result.noSkipRange.from, itemId);
accumulate_max(result.noSkipRange.till, itemId);
}
}
if (messageId && result.messageIds.empty()) {
result.noSkipRange = [&]() -> MsgRange {
switch (direction) {
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case Data::LoadDirection::Before: // All old loaded.
return { 0, result.noSkipRange.till };
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case Data::LoadDirection::Around: // All loaded.
return { 0, ServerMaxMsgId };
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case Data::LoadDirection::After: // All new loaded.
return { result.noSkipRange.from, ServerMaxMsgId };
}
Unexpected("Direction in ParseSearchResult");
}();
}
return result;
}
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SearchController::CacheEntry::CacheEntry(
not_null<Main::Session*> session,
const Query &query)
: peerData(session->data().peer(query.peerId))
, migratedData(query.migratedPeerId
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? base::make_optional(Data(session->data().peer(query.migratedPeerId)))
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: std::nullopt) {
}
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SearchController::SearchController(not_null<Main::Session*> session)
: _session(session) {
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}
bool SearchController::hasInCache(const Query &query) const {
return query.query.isEmpty() || _cache.contains(query);
}
void SearchController::setQuery(const Query &query) {
if (query.query.isEmpty()) {
_cache.clear();
_current = _cache.end();
} else {
_current = _cache.find(query);
}
if (_current == _cache.end()) {
_current = _cache.emplace(
query,
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std::make_unique<CacheEntry>(_session, query)).first;
}
}
rpl::producer<SparseIdsMergedSlice> SearchController::idsSlice(
SparseIdsMergedSlice::UniversalMsgId aroundId,
int limitBefore,
int limitAfter) {
Expects(_current != _cache.cend());
auto query = (const Query&)_current->first;
auto createSimpleViewer = [=](
PeerId peerId,
SparseIdsSlice::Key simpleKey,
int limitBefore,
int limitAfter) {
return simpleIdsSlice(
peerId,
simpleKey,
query,
limitBefore,
limitAfter);
};
return SparseIdsMergedSlice::CreateViewer(
SparseIdsMergedSlice::Key(
query.peerId,
query.migratedPeerId,
aroundId),
limitBefore,
limitAfter,
std::move(createSimpleViewer));
}
rpl::producer<SparseIdsSlice> SearchController::simpleIdsSlice(
PeerId peerId,
MsgId aroundId,
const Query &query,
int limitBefore,
int limitAfter) {
Expects(peerId != 0);
Expects(IsServerMsgId(aroundId) || (aroundId == 0));
Expects((aroundId != 0)
|| (limitBefore == 0 && limitAfter == 0));
Expects((query.peerId == peerId)
|| (query.migratedPeerId == peerId));
auto it = _cache.find(query);
if (it == _cache.end()) {
return [=](auto) { return rpl::lifetime(); };
}
auto listData = (peerId == query.peerId)
? &it->second->peerData
: &*it->second->migratedData;
return [=](auto consumer) {
auto lifetime = rpl::lifetime();
auto builder = lifetime.make_state<SparseIdsSliceBuilder>(
aroundId,
limitBefore,
limitAfter);
builder->insufficientAround(
) | rpl::start_with_next([=](
const SparseIdsSliceBuilder::AroundData &data) {
requestMore(data, query, listData);
}, lifetime);
auto pushNextSnapshot = [=] {
consumer.put_next(builder->snapshot());
};
listData->list.sliceUpdated(
) | rpl::filter([=](const SliceUpdate &update) {
return builder->applyUpdate(update);
}) | rpl::start_with_next(pushNextSnapshot, lifetime);
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_session->data().itemRemoved(
) | rpl::filter([=](not_null<const HistoryItem*> item) {
return (item->history()->peer->id == peerId);
}) | rpl::filter([=](not_null<const HistoryItem*> item) {
return builder->removeOne(item->id);
}) | rpl::start_with_next(pushNextSnapshot, lifetime);
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_session->data().historyCleared(
) | rpl::filter([=](not_null<const History*> history) {
return (history->peer->id == peerId);
}) | rpl::filter([=] {
return builder->removeAll();
}) | rpl::start_with_next(pushNextSnapshot, lifetime);
using Result = Storage::SparseIdsListResult;
listData->list.query(Storage::SparseIdsListQuery(
aroundId,
limitBefore,
limitAfter
)) | rpl::filter([=](const Result &result) {
return builder->applyInitial(result);
}) | rpl::start_with_next_done(
pushNextSnapshot,
[=] { builder->checkInsufficient(); },
lifetime);
return lifetime;
};
}
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auto SearchController::saveState() -> SavedState {
auto result = SavedState();
if (_current != _cache.end()) {
result.query = _current->first;
result.peerList = std::move(_current->second->peerData.list);
if (auto &migrated = _current->second->migratedData) {
result.migratedList = std::move(migrated->list);
}
}
return result;
}
void SearchController::restoreState(SavedState &&state) {
if (!state.query.peerId) {
return;
}
auto it = _cache.find(state.query);
if (it == _cache.end()) {
it = _cache.emplace(
state.query,
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std::make_unique<CacheEntry>(_session, state.query)).first;
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}
auto replace = Data(it->second->peerData.peer);
replace.list = std::move(state.peerList);
it->second->peerData = std::move(replace);
if (auto &migrated = state.migratedList) {
Assert(it->second->migratedData.has_value());
auto replace = Data(it->second->migratedData->peer);
replace.list = std::move(*migrated);
it->second->migratedData = std::move(replace);
}
_current = it;
}
void SearchController::requestMore(
const SparseIdsSliceBuilder::AroundData &key,
const Query &query,
Data *listData) {
if (listData->requests.contains(key)) {
return;
}
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auto prepared = PrepareSearchRequest(
listData->peer,
query.type,
query.query,
key.aroundId,
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key.direction);
if (!prepared) {
return;
}
auto &histories = _session->data().histories();
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const auto type = ::Data::Histories::RequestType::History;
const auto history = _session->data().history(listData->peer);
auto requestId = histories.sendRequest(history, type, [=](Fn<void()> finish) {
return _session->api().request(
std::move(*prepared)
).done([=](const MTPmessages_Messages &result) {
listData->requests.remove(key);
auto parsed = ParseSearchResult(
listData->peer,
query.type,
key.aroundId,
key.direction,
result);
listData->list.addSlice(
std::move(parsed.messageIds),
parsed.noSkipRange,
parsed.fullCount);
finish();
}).fail([=](const RPCError &error) {
finish();
}).send();
});
listData->requests.emplace(key, [=] {
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_session->data().histories().cancelRequest(requestId);
});
}
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DelayedSearchController::DelayedSearchController(
not_null<Main::Session*> session)
: _controller(session) {
_timer.setCallback([this] { setQueryFast(_nextQuery); });
}
void DelayedSearchController::setQuery(const Query &query) {
setQuery(query, kDefaultSearchTimeoutMs);
}
void DelayedSearchController::setQuery(
const Query &query,
crl::time delay) {
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if (currentQuery() == query) {
_timer.cancel();
return;
}
if (_controller.hasInCache(query)) {
setQueryFast(query);
} else {
_nextQuery = query;
_timer.callOnce(delay);
}
}
void DelayedSearchController::setQueryFast(const Query &query) {
_controller.setQuery(query);
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_currentQueryChanges.fire_copy(query.query);
}
} // namespace Api