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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 "api/api_messages_search.h"
#include "apiwrap.h"
#include "data/data_channel.h"
#include "data/data_histories.h"
#include "data/data_peer.h"
#include "data/data_session.h"
#include "history/history.h"
#include "history/history_item.h"
#include "main/main_session.h"
namespace Api {
namespace {
constexpr auto kSearchPerPage = 50;
[[nodiscard]] MessageIdsList HistoryItemsFromTL(
not_null<Data::Session*> data,
const QVector<MTPMessage> &messages) {
auto result = MessageIdsList();
for (const auto &message : messages) {
const auto peerId = PeerFromMessage(message);
if (const auto peer = data->peerLoaded(peerId)) {
if (const auto lastDate = DateFromMessage(message)) {
const auto item = data->addNewMessage(
message,
MessageFlags(),
NewMessageType::Existing);
result.push_back(item->fullId());
}
} else {
LOG(("API Error: a search results with not loaded peer %1"
).arg(peerId.value));
}
}
return result;
}
} // namespace
MessagesSearch::MessagesSearch(not_null<History*> history)
: _history(history) {
}
MessagesSearch::~MessagesSearch() {
_history->owner().histories().cancelRequest(
base::take(_searchInHistoryRequest));
}
void MessagesSearch::searchMessages(const QString &query, PeerData *from) {
_query = query;
_from = from;
_offsetId = {};
searchRequest();
}
void MessagesSearch::searchMore() {
if (_searchInHistoryRequest || _requestId) {
return;
}
searchRequest();
}
void MessagesSearch::searchRequest() {
const auto nextToken = _query
+ QString::number(_from ? _from->id.value : 0);
if (!_offsetId) {
const auto it = _cacheOfStartByToken.find(nextToken);
if (it != end(_cacheOfStartByToken)) {
_requestId = 0;
searchReceived(it->second, _requestId, nextToken);
return;
}
}
auto callback = [=](Fn<void()> finish) {
const auto flags = _from
? MTP_flags(MTPmessages_Search::Flag::f_from_id)
: MTP_flags(0);
_requestId = _history->session().api().request(MTPmessages_Search(
flags,
_history->peer->input,
MTP_string(_query),
(_from
? _from->input
: MTP_inputPeerEmpty()),
MTPint(), // top_msg_id
MTP_inputMessagesFilterEmpty(),
MTP_int(0), // min_date
MTP_int(0), // max_date
MTP_int(_offsetId), // offset_id
MTP_int(0), // add_offset
MTP_int(kSearchPerPage),
MTP_int(0), // max_id
MTP_int(0), // min_id
MTP_long(0) // hash
)).done([=](const TLMessages &result, mtpRequestId id) {
_searchInHistoryRequest = 0;
searchReceived(result, id, nextToken);
finish();
}).fail([=](const MTP::Error &error, mtpRequestId id) {
_searchInHistoryRequest = 0;
if (_requestId == id) {
_requestId = 0;
}
if (error.type() == u"SEARCH_QUERY_EMPTY"_q) {
_messagesFounds.fire({ 0, MessageIdsList(), nextToken });
}
finish();
}).send();
return _requestId;
};
_searchInHistoryRequest = _history->owner().histories().sendRequest(
_history,
Data::Histories::RequestType::History,
std::move(callback));
}
void MessagesSearch::searchReceived(
const TLMessages &result,
mtpRequestId requestId,
const QString &nextToken) {
if (requestId != _requestId) {
return;
}
auto &owner = _history->owner();
auto found = result.match([&](const MTPDmessages_messages &data) {
if (_requestId != 0) {
// Don't apply cached data!
owner.processUsers(data.vusers());
owner.processChats(data.vchats());
}
auto items = HistoryItemsFromTL(&owner, data.vmessages().v);
const auto total = int(data.vmessages().v.size());
return FoundMessages{ total, std::move(items), nextToken };
}, [&](const MTPDmessages_messagesSlice &data) {
if (_requestId != 0) {
// Don't apply cached data!
owner.processUsers(data.vusers());
owner.processChats(data.vchats());
}
auto items = HistoryItemsFromTL(&owner, data.vmessages().v);
// data.vnext_rate() is used only in global search.
const auto total = int(data.vcount().v);
return FoundMessages{ total, std::move(items), nextToken };
}, [&](const MTPDmessages_channelMessages &data) {
if (_requestId != 0) {
// Don't apply cached data!
owner.processUsers(data.vusers());
owner.processChats(data.vchats());
}
if (const auto channel = _history->peer->asChannel()) {
channel->ptsReceived(data.vpts().v);
if (_requestId != 0) {
// Don't apply cached data!
channel->processTopics(data.vtopics());
}
} else {
LOG(("API Error: "
"received messages.channelMessages when no channel "
"was passed!"));
}
auto items = HistoryItemsFromTL(&owner, data.vmessages().v);
const auto total = int(data.vcount().v);
return FoundMessages{ total, std::move(items), nextToken };
}, [](const MTPDmessages_messagesNotModified &data) {
return FoundMessages{};
});
if (!_offsetId) {
_cacheOfStartByToken.emplace(nextToken, result);
}
_requestId = 0;
_offsetId = found.messages.empty()
? MsgId()
: found.messages.back().msg;
_messagesFounds.fire(std::move(found));
}
rpl::producer<FoundMessages> MessagesSearch::messagesFounds() const {
return _messagesFounds.events();
}
} // namespace Api
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