tdlight/td/telegram/Usernames.cpp

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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2022
//
// 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/Usernames.h"
#include "td/utils/algorithm.h"
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#include "td/utils/FlatHashSet.h"
#include "td/utils/logging.h"
#include "td/utils/misc.h"
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#include "td/utils/utf8.h"
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namespace td {
Usernames::Usernames(string &&first_username, vector<telegram_api::object_ptr<telegram_api::username>> &&usernames) {
if (usernames.empty()) {
if (!first_username.empty()) {
active_usernames_.push_back(std::move(first_username));
editable_username_pos_ = 0;
}
return;
}
if (!first_username.empty()) {
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LOG(ERROR) << "Receive first username " << first_username << " with " << to_string(usernames);
return;
}
bool was_editable = false;
for (auto &username : usernames) {
if (username->username_.empty()) {
LOG(ERROR) << "Receive empty username in " << to_string(usernames);
return;
}
if (username->editable_) {
if (was_editable) {
LOG(ERROR) << "Receive two editable usernames in " << to_string(usernames);
return;
}
if (!username->active_) {
LOG(ERROR) << "Receive disabled editable usernames in " << to_string(usernames);
return;
}
was_editable = true;
}
}
for (size_t i = 0; i < usernames.size(); i++) {
if (usernames[i]->active_) {
active_usernames_.push_back(std::move(usernames[i]->username_));
if (usernames[i]->editable_) {
editable_username_pos_ = narrow_cast<int32>(i);
}
} else {
disabled_usernames_.push_back(std::move(usernames[i]->username_));
}
}
CHECK(has_editable_username() == was_editable);
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}
tl_object_ptr<td_api::usernames> Usernames::get_usernames_object() const {
if (is_empty()) {
return nullptr;
}
return make_tl_object<td_api::usernames>(
vector<string>(active_usernames_), vector<string>(disabled_usernames_),
has_editable_username() ? active_usernames_[editable_username_pos_] : string());
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}
Usernames Usernames::change_editable_username(string &&new_username) const {
Usernames result = *this;
if (has_editable_username()) {
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if (new_username.empty()) {
result.active_usernames_.erase(result.active_usernames_.begin() + editable_username_pos_);
result.editable_username_pos_ = -1;
} else {
// keep position
result.active_usernames_[editable_username_pos_] = std::move(new_username);
}
} else if (!new_username.empty()) {
// add to the beginning
result.active_usernames_.insert(result.active_usernames_.begin(), std::move(new_username));
result.editable_username_pos_ = 0;
}
return result;
}
bool Usernames::can_toggle(const string &username) const {
if (td::contains(active_usernames_, username)) {
return !has_editable_username() || active_usernames_[editable_username_pos_] != username;
}
if (td::contains(disabled_usernames_, username)) {
return true;
}
return false;
}
Usernames Usernames::toggle(const string &username, bool is_active) const {
Usernames result = *this;
for (size_t i = 0; i < disabled_usernames_.size(); i++) {
if (disabled_usernames_[i] == username) {
if (is_active) {
// activate the username
result.disabled_usernames_.erase(result.disabled_usernames_.begin() + i);
result.active_usernames_.push_back(username);
// editable username position wasn't changed
}
return result;
}
}
for (size_t i = 0; i < active_usernames_.size(); i++) {
if (active_usernames_[i] == username) {
if (!is_active) {
// disable the username
result.active_usernames_.erase(result.active_usernames_.begin() + i);
result.disabled_usernames_.insert(result.disabled_usernames_.begin(), username);
if (result.has_editable_username() && i <= static_cast<size_t>(result.editable_username_pos_)) {
CHECK(i != static_cast<size_t>(result.editable_username_pos_));
CHECK(result.editable_username_pos_ > 0);
result.editable_username_pos_--;
}
}
return result;
}
}
UNREACHABLE();
return result;
}
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Usernames Usernames::deactivate_all() const {
Usernames result;
for (size_t i = 0; i < active_usernames_.size(); i++) {
if (i == static_cast<size_t>(editable_username_pos_)) {
result.active_usernames_.push_back(active_usernames_[i]);
result.editable_username_pos_ = 0;
} else {
result.disabled_usernames_.push_back(active_usernames_[i]);
}
}
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append(result.disabled_usernames_, disabled_usernames_);
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CHECK(result.has_editable_username() == has_editable_username());
return result;
}
bool Usernames::can_reorder_to(const vector<string> &new_username_order) const {
if (new_username_order.size() != active_usernames_.size()) {
return false;
}
FlatHashSet<string> active_usernames;
for (auto &username : active_usernames_) {
active_usernames.insert(username);
}
for (auto &username : new_username_order) {
auto it = active_usernames.find(username);
if (it == active_usernames.end()) {
return false;
}
active_usernames.erase(it);
}
CHECK(active_usernames.empty());
return true;
}
Usernames Usernames::reorder_to(vector<string> &&new_username_order) const {
Usernames result;
result.active_usernames_ = std::move(new_username_order);
result.disabled_usernames_ = disabled_usernames_;
if (has_editable_username()) {
const string &editable_username = active_usernames_[editable_username_pos_];
for (size_t i = 0; i < result.active_usernames_.size(); i++) {
if (result.active_usernames_[i] == editable_username) {
result.editable_username_pos_ = narrow_cast<int32>(i);
break;
}
}
CHECK(result.has_editable_username());
}
return result;
}
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void Usernames::check_utf8_validness() {
for (auto &username : active_usernames_) {
if (!check_utf8(username)) {
LOG(ERROR) << "Have invalid active username \"" << username << '"';
*this = Usernames();
return;
}
}
for (auto &username : disabled_usernames_) {
if (!check_utf8(username)) {
LOG(ERROR) << "Have invalid disabled username \"" << username << '"';
*this = Usernames();
return;
}
}
}
bool operator==(const Usernames &lhs, const Usernames &rhs) {
return lhs.active_usernames_ == rhs.active_usernames_ && lhs.disabled_usernames_ == rhs.disabled_usernames_ &&
lhs.editable_username_pos_ == rhs.editable_username_pos_;
}
bool operator!=(const Usernames &lhs, const Usernames &rhs) {
return !(lhs == rhs);
}
StringBuilder &operator<<(StringBuilder &string_builder, const Usernames &usernames) {
string_builder << "Usernames[";
if (usernames.has_editable_username()) {
string_builder << usernames.active_usernames_[usernames.editable_username_pos_];
}
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if (!usernames.active_usernames_.empty()) {
string_builder << ", active " << usernames.active_usernames_;
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}
if (!usernames.disabled_usernames_.empty()) {
string_builder << ", disabled " << usernames.disabled_usernames_;
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}
return string_builder << ']';
}
} // namespace td