103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "data/data_feed_messages.h"
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#include "apiwrap.h"
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#include "auth_session.h"
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#include "data/data_session.h"
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#include "storage/storage_feed_messages.h"
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namespace Data {
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rpl::producer<MessagesSlice> FeedMessagesViewer(
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Storage::FeedMessagesKey key,
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int limitBefore,
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int limitAfter) {
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Expects(IsServerMsgId(key.position.fullId.msg)
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|| (key.position.fullId.msg == 0));
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return [=](auto consumer) {
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auto lifetime = rpl::lifetime();
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const auto builder = lifetime.make_state<MessagesSliceBuilder>(
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key.position,
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limitBefore,
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limitAfter);
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const auto feed = Auth().data().feed(key.feedId);
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using AroundData = MessagesSliceBuilder::AroundData;
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const auto requestMediaAround = [=](const AroundData &data) {
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if (data.aroundId || !key.position) {
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//Auth().api().requestFeedMessages( // #feed
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// feed,
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// data.aroundId,
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// data.direction);
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}
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};
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builder->insufficientAround(
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) | rpl::start_with_next(requestMediaAround, lifetime);
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const auto pushNextSnapshot = [=] {
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consumer.put_next(builder->snapshot());
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};
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using SliceUpdate = Storage::FeedMessagesSliceUpdate;
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Auth().storage().feedMessagesSliceUpdated(
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) | rpl::filter([=](const SliceUpdate &update) {
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return (update.feedId == key.feedId);
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}) | rpl::filter([=](const SliceUpdate &update) {
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return builder->applyUpdate(update.data);
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}) | rpl::start_with_next(pushNextSnapshot, lifetime);
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using OneRemoved = Storage::FeedMessagesRemoveOne;
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Auth().storage().feedMessagesOneRemoved(
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) | rpl::filter([=](const OneRemoved &update) {
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return (update.feedId == key.feedId);
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}) | rpl::filter([=](const OneRemoved &update) {
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return builder->removeOne(update.messageId);
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}) | rpl::start_with_next(pushNextSnapshot, lifetime);
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using AllRemoved = Storage::FeedMessagesRemoveAll;
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Auth().storage().feedMessagesAllRemoved(
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) | rpl::filter([=](const AllRemoved &update) {
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return (update.feedId == key.feedId);
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}) | rpl::filter([=](const AllRemoved &update) {
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return builder->removeFromChannel(update.channelId);
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}) | rpl::start_with_next(pushNextSnapshot, lifetime);
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using Invalidate = Storage::FeedMessagesInvalidate;
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Auth().storage().feedMessagesInvalidated(
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) | rpl::filter([=](const Invalidate &update) {
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return (update.feedId == key.feedId);
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}) | rpl::filter([=] {
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return builder->invalidated();
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}) | rpl::start_with_next(pushNextSnapshot, lifetime);
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using InvalidateBottom = Storage::FeedMessagesInvalidateBottom;
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Auth().storage().feedMessagesBottomInvalidated(
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) | rpl::filter([=](const InvalidateBottom &update) {
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return (update.feedId == key.feedId);
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}) | rpl::filter([=] {
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return builder->bottomInvalidated();
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}) | rpl::start_with_next(pushNextSnapshot, lifetime);
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using Result = Storage::FeedMessagesResult;
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Auth().storage().query(Storage::FeedMessagesQuery(
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key,
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limitBefore,
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limitAfter
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)) | rpl::filter([=](const Result &result) {
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return builder->applyInitial(result);
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}) | rpl::start_with_next_done(
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pushNextSnapshot,
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[=] { builder->checkInsufficient(); },
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lifetime);
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return lifetime;
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};
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}
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} // namespace Data
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