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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2026
//
// 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)
//
#include "td/telegram/RecentDialogList.h"
#include "td/telegram/AccessRights.h"
#include "td/telegram/ChatManager.h"
#include "td/telegram/DialogListId.h"
#include "td/telegram/DialogManager.h"
#include "td/telegram/FolderId.h"
#include "td/telegram/Global.h"
#include "td/telegram/MessagesManager.h"
#include "td/telegram/Td.h"
#include "td/telegram/td_api.h"
#include "td/telegram/TdDb.h"
#include "td/telegram/UserManager.h"
#include "td/actor/MultiPromise.h"
#include "td/utils/algorithm.h"
#include "td/utils/misc.h"
#include "td/utils/Slice.h"
#include "td/utils/SliceBuilder.h"
namespace td {
RecentDialogList::RecentDialogList(Td *td, const char *name, size_t max_size)
: td_(td), name_(name), max_size_(max_size) {
register_actor(PSLICE() << name << "_chats", this).release();
}
string RecentDialogList::get_binlog_key() const {
return PSTRING() << name_ << "_dialog_usernames_and_ids";
}
void RecentDialogList::save_dialogs() const {
if (!is_loaded_) {
return;
}
CHECK(removed_dialog_ids_.empty());
SliceBuilder sb;
for (auto &dialog_id : dialog_ids_) {
sb << ',';
if (!G()->use_chat_info_database()) {
// if there is no dialog info database, prefer to save dialogs by username
Slice username;
switch (dialog_id.get_type()) {
case DialogType::User:
if (!td_->user_manager_->is_user_contact(dialog_id.get_user_id())) {
username = td_->user_manager_->get_user_first_username(dialog_id.get_user_id());
}
break;
case DialogType::Chat:
break;
case DialogType::Channel:
username = td_->chat_manager_->get_channel_first_username(dialog_id.get_channel_id());
break;
case DialogType::SecretChat:
break;
case DialogType::None:
default:
UNREACHABLE();
}
if (!username.empty() && username.find(',') == string::npos) {
sb << '@' << username;
continue;
}
}
sb << dialog_id.get();
}
auto result = sb.as_cslice();
if (!result.empty()) {
result.remove_prefix(1);
}
G()->td_db()->get_binlog_pmc()->set(get_binlog_key(), result.str());
}
void RecentDialogList::load_dialogs(Promise<Unit> &&promise) {
if (is_loaded_) {
return promise.set_value(Unit());
}
load_list_queries_.push_back(std::move(promise));
if (load_list_queries_.size() != 1) {
return;
}
auto found_dialogs = full_split(G()->td_db()->get_binlog_pmc()->get(get_binlog_key()), ',');
MultiPromiseActorSafe mpas{"LoadRecentDialogListMultiPromiseActor"};
mpas.add_promise(PromiseCreator::lambda([actor_id = actor_id(this), found_dialogs](Unit) mutable {
send_closure(actor_id, &RecentDialogList::on_load_dialogs, std::move(found_dialogs));
}));
mpas.set_ignore_errors(true);
auto lock = mpas.get_promise();
vector<DialogId> dialog_ids;
for (auto &found_dialog : found_dialogs) {
if (found_dialog[0] == '@') {
td_->dialog_manager_->search_public_dialog(found_dialog, false, mpas.get_promise());
} else {
dialog_ids.push_back(DialogId(to_integer<int64>(found_dialog)));
}
}
if (!dialog_ids.empty()) {
if (G()->use_chat_info_database() && !G()->td_db()->was_dialog_db_created()) {
td_->messages_manager_->load_dialogs(
std::move(dialog_ids), PromiseCreator::lambda([promise = mpas.get_promise()](vector<DialogId>) mutable {
promise.set_value(Unit());
}));
} else {
td_->messages_manager_->get_dialogs_from_list(
DialogListId(FolderId::main()), 102,
PromiseCreator::lambda([promise = mpas.get_promise()](td_api::object_ptr<td_api::chats> &&chats) mutable {
promise.set_value(Unit());
}));
td_->user_manager_->search_contacts("", 1, mpas.get_promise());
}
}
lock.set_value(Unit());
}
void RecentDialogList::on_load_dialogs(vector<string> &&found_dialogs) {
auto promises = std::move(load_list_queries_);
CHECK(!promises.empty());
if (G()->close_flag()) {
return fail_promises(promises, Global::request_aborted_error());
}
auto newly_found_dialogs = std::move(dialog_ids_);
reset_to_empty(dialog_ids_);
for (auto it = found_dialogs.rbegin(); it != found_dialogs.rend(); ++it) {
DialogId dialog_id;
if ((*it)[0] == '@') {
dialog_id = td_->dialog_manager_->get_resolved_dialog_by_username(it->substr(1));
} else {
dialog_id = DialogId(to_integer<int64>(*it));
}
if (dialog_id.is_valid() && td::contains(removed_dialog_ids_, dialog_id) == 0 &&
td_->dialog_manager_->have_dialog_info(dialog_id) &&
td_->dialog_manager_->have_input_peer(dialog_id, true, AccessRights::Read)) {
td_->dialog_manager_->force_create_dialog(dialog_id, "recent dialog");
do_add_dialog(dialog_id);
}
}
for (auto it = newly_found_dialogs.rbegin(); it != newly_found_dialogs.rend(); ++it) {
do_add_dialog(*it);
}
is_loaded_ = true;
removed_dialog_ids_.clear();
if (!newly_found_dialogs.empty()) {
save_dialogs();
}
set_promises(promises);
}
void RecentDialogList::add_dialog(DialogId dialog_id) {
if (!is_loaded_) {
load_dialogs(Promise<Unit>());
}
if (do_add_dialog(dialog_id)) {
save_dialogs();
}
}
bool RecentDialogList::do_add_dialog(DialogId dialog_id) {
if (!dialog_ids_.empty() && dialog_ids_[0] == dialog_id) {
return false;
}
add_to_top(dialog_ids_, max_size_, dialog_id);
td::remove(removed_dialog_ids_, dialog_id);
return true;
}
void RecentDialogList::remove_dialog(DialogId dialog_id) {
if (!dialog_id.is_valid()) {
return;
}
if (!is_loaded_) {
load_dialogs(Promise<Unit>());
}
if (td::remove(dialog_ids_, dialog_id)) {
save_dialogs();
} else if (!is_loaded_ && !td::contains(removed_dialog_ids_, dialog_id)) {
removed_dialog_ids_.push_back(dialog_id);
}
}
void RecentDialogList::update_dialogs() {
CHECK(is_loaded_);
vector<DialogId> dialog_ids;
for (auto dialog_id : dialog_ids_) {
if (!td_->messages_manager_->have_dialog(dialog_id)) {
continue;
}
switch (dialog_id.get_type()) {
case DialogType::User:
// always keep
break;
case DialogType::Chat: {
auto channel_id = td_->chat_manager_->get_chat_migrated_to_channel_id(dialog_id.get_chat_id());
if (channel_id.is_valid() && td_->messages_manager_->have_dialog(DialogId(channel_id))) {
dialog_id = DialogId(channel_id);
}
break;
}
case DialogType::Channel:
// always keep
break;
case DialogType::SecretChat:
if (td_->messages_manager_->is_deleted_secret_chat(dialog_id)) {
dialog_id = DialogId();
}
break;
case DialogType::None:
default:
UNREACHABLE();
break;
}
if (dialog_id.is_valid()) {
dialog_ids.push_back(dialog_id);
}
}
if (dialog_ids != dialog_ids_) {
dialog_ids_ = std::move(dialog_ids);
save_dialogs();
}
}
std::pair<int32, vector<DialogId>> RecentDialogList::get_dialogs(int32 limit, Promise<Unit> &&promise) {
load_dialogs(std::move(promise));
if (!is_loaded_) {
return {};
}
update_dialogs();
CHECK(limit >= 0);
auto total_count = narrow_cast<int32>(dialog_ids_.size());
return {total_count, vector<DialogId>(dialog_ids_.begin(), dialog_ids_.begin() + min(limit, total_count))};
}
void RecentDialogList::clear_dialogs() {
if (dialog_ids_.empty() && is_loaded_) {
return;
}
is_loaded_ = true;
dialog_ids_.clear();
removed_dialog_ids_.clear();
save_dialogs();
}
} // namespace td
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