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@levlam @arseny30
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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
//
// 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/Client.h>
#include <td/telegram/Log.h>
#include <td/telegram/td_api.h>
#include <td/telegram/td_api.hpp>
#include <cstdint>
#include <functional>
#include <iostream>
#include <limits>
#include <map>
#include <sstream>
#include <string>
#include <vector>
// Simple single-threaded example of TDLib usage.
// Real world programs should use separate thread for the user input.
// Example includes user authentication, receiving updates, getting chat list and sending text messages.
// overloaded
namespace detail {
template <class... Fs>
struct overload;
template <class F>
struct overload<F> : public F {
explicit overload(F f) : F(f) {
}
};
template <class F, class... Fs>
struct overload<F, Fs...>
: public overload<F>
, overload<Fs...> {
overload(F f, Fs... fs) : overload<F>(f), overload<Fs...>(fs...) {
}
using overload<F>::operator();
using overload<Fs...>::operator();
};
} // namespace detail
template <class... F>
auto overloaded(F... f) {
return detail::overload<F...>(f...);
}
namespace td_api = td::td_api;
class TdExample {
public:
TdExample() {
td::Log::set_verbosity_level(1);
client_ = std::make_unique<td::Client>();
}
void loop() {
while (true) {
if (need_restart_) {
restart();
} else if (!are_authorized_) {
process_response(client_->receive(10));
} else {
std::cerr << "Enter action [q] quit [u] check for updates and request results [c] show chats [m <id> <text>] "
"send message [l] logout: "
<< std::endl;
std::string line;
std::getline(std::cin, line);
std::istringstream ss(line);
std::string action;
if (!(ss >> action)) {
continue;
}
if (action == "q") {
return;
}
if (action == "u") {
std::cerr << "Checking for updates..." << std::endl;
while (true) {
auto response = client_->receive(0);
if (response.object) {
process_response(std::move(response));
} else {
break;
}
}
} else if (action == "l") {
std::cerr << "Logging out..." << std::endl;
send_query(td_api::make_object<td_api::logOut>(), {});
} else if (action == "m") {
std::int64_t chat_id;
ss >> chat_id;
ss.get();
std::string text;
std::getline(ss, text);
std::cerr << "Sending message to chat " << chat_id << "..." << std::endl;
auto send_message = td_api::make_object<td_api::sendMessage>();
send_message->chat_id_ = chat_id;
auto message_content = td_api::make_object<td_api::inputMessageText>();
message_content->text_ = td_api::make_object<td_api::formattedText>();
message_content->text_->text_ = std::move(text);
send_message->input_message_content_ = std::move(message_content);
send_query(std::move(send_message), {});
} else if (action == "c") {
std::cerr << "Loading chat list..." << std::endl;
send_query(td_api::make_object<td_api::getChats>(std::numeric_limits<std::int64_t>::max(), 0, 20),
[this](Object object) {
if (object->get_id() == td_api::error::ID) {
return;
}
auto chats = td::move_tl_object_as<td_api::chats>(object);
for (auto chat_id : chats->chat_ids_) {
std::cerr << "[id:" << chat_id << "] [title:" << chat_title_[chat_id] << "]" << std::endl;
}
});
}
}
}
}
private:
using Object = td_api::object_ptr<td_api::Object>;
std::unique_ptr<td::Client> client_;
td_api::object_ptr<td_api::AuthorizationState> authorization_state_;
bool are_authorized_{false};
bool need_restart_{false};
std::uint64_t current_query_id_{0};
std::uint64_t authentication_query_id_{0};
std::map<std::uint64_t, std::function<void(Object)>> handlers_;
std::map<std::int32_t, td_api::object_ptr<td_api::user>> users_;
std::map<std::int64_t, std::string> chat_title_;
void restart() {
client_.reset();
*this = TdExample();
}
void send_query(td_api::object_ptr<td_api::Function> f, std::function<void(Object)> handler) {
auto query_id = next_query_id();
if (handler) {
handlers_.emplace(query_id, std::move(handler));
}
client_->send({query_id, std::move(f)});
}
void process_response(td::Client::Response response) {
if (!response.object) {
return;
}
//std::cerr << response.id << " " << to_string(response.object) << std::endl;
if (response.id == 0) {
return process_update(std::move(response.object));
}
auto it = handlers_.find(response.id);
if (it != handlers_.end()) {
it->second(std::move(response.object));
}
}
std::string get_user_name(std::int32_t user_id) {
auto it = users_.find(user_id);
if (it == users_.end()) {
return "unknown user";
}
return it->second->first_name_ + " " + it->second->last_name_;
}
void process_update(td_api::object_ptr<td_api::Object> update) {
td_api::downcast_call(
*update, overloaded(
[this](td_api::updateAuthorizationState &update_authorization_state) {
authorization_state_ = std::move(update_authorization_state.authorization_state_);
on_authorization_state_update();
},
[this](td_api::updateNewChat &update_new_chat) {
chat_title_[update_new_chat.chat_->id_] = update_new_chat.chat_->title_;
},
[this](td_api::updateChatTitle &update_chat_title) {
chat_title_[update_chat_title.chat_id_] = update_chat_title.title_;
},
[this](td_api::updateUser &update_user) {
auto user_id = update_user.user_->id_;
users_[user_id] = std::move(update_user.user_);
},
[this](td_api::updateNewMessage &update_new_message) {
auto chat_id = update_new_message.message_->chat_id_;
auto sender_user_name = get_user_name(update_new_message.message_->sender_user_id_);
std::string text;
if (update_new_message.message_->content_->get_id() == td_api::messageText::ID) {
text = static_cast<td_api::messageText &>(*update_new_message.message_->content_).text_->text_;
}
std::cerr << "Got message: [chat_id:" << chat_id << "] [from:" << sender_user_name << "] ["
<< text << "]" << std::endl;
},
[](auto &update) {}));
}
auto create_authentication_query_handler() {
return [this, id = authentication_query_id_](Object object) {
if (id == authentication_query_id_) {
check_authentication_error(std::move(object));
}
};
}
void on_authorization_state_update() {
authentication_query_id_++;
td_api::downcast_call(
*authorization_state_,
overloaded(
[this](td_api::authorizationStateReady &) {
are_authorized_ = true;
std::cerr << "Got authorization" << std::endl;
},
[this](td_api::authorizationStateLoggingOut &) {
are_authorized_ = false;
std::cerr << "Logging out" << std::endl;
},
[this](td_api::authorizationStateClosing &) { std::cerr << "Closing" << std::endl; },
[this](td_api::authorizationStateClosed &) {
are_authorized_ = false;
need_restart_ = true;
std::cerr << "Terminated" << std::endl;
},
[this](td_api::authorizationStateWaitCode &wait_code) {
std::string first_name;
std::string last_name;
if (!wait_code.is_registered_) {
std::cerr << "Enter your first name: ";
std::cin >> first_name;
std::cerr << "Enter your last name: ";
std::cin >> last_name;
}
std::cerr << "Enter authentication code: ";
std::string code;
std::cin >> code;
send_query(td_api::make_object<td_api::checkAuthenticationCode>(code, first_name, last_name),
create_authentication_query_handler());
},
[this](td_api::authorizationStateWaitPassword &) {
std::cerr << "Enter authentication password: ";
std::string password;
std::cin >> password;
send_query(td_api::make_object<td_api::checkAuthenticationPassword>(password),
create_authentication_query_handler());
},
[this](td_api::authorizationStateWaitPhoneNumber &) {
std::cerr << "Enter phone number: ";
std::string phone_number;
std::cin >> phone_number;
send_query(td_api::make_object<td_api::setAuthenticationPhoneNumber>(
phone_number, false /*allow_flash_calls*/, false /*is_current_phone_number*/),
create_authentication_query_handler());
},
[this](td_api::authorizationStateWaitEncryptionKey &) {
std::cerr << "Enter encryption key or DESTROY: ";
std::string key;
std::getline(std::cin, key);
if (key == "DESTROY") {
send_query(td_api::make_object<td_api::destroy>(), create_authentication_query_handler());
} else {
send_query(td_api::make_object<td_api::checkDatabaseEncryptionKey>(std::move(key)),
create_authentication_query_handler());
}
},
[this](td_api::authorizationStateWaitTdlibParameters &) {
auto parameters = td_api::make_object<td_api::tdlibParameters>();
parameters->database_directory_ = "tdlib";
parameters->use_message_database_ = true;
parameters->use_secret_chats_ = true;
parameters->api_id_ = 94575;
parameters->api_hash_ = "a3406de8d171bb422bb6ddf3bbd800e2";
parameters->system_language_code_ = "en";
parameters->device_model_ = "Desktop";
parameters->system_version_ = "Unknown";
parameters->application_version_ = "1.0";
parameters->enable_storage_optimizer_ = true;
send_query(td_api::make_object<td_api::setTdlibParameters>(std::move(parameters)),
create_authentication_query_handler());
}));
}
void check_authentication_error(Object object) {
if (object->get_id() == td_api::error::ID) {
auto error = td::move_tl_object_as<td_api::error>(object);
std::cerr << "Error: " << to_string(error);
on_authorization_state_update();
}
}
std::uint64_t next_query_id() {
return ++current_query_id_;
}
};
int main() {
TdExample example;
example.loop();
}
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