314 lines
12 KiB
C++
314 lines
12 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2019
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include <td/telegram/Client.h>
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#include <td/telegram/td_api.h>
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#include <td/telegram/td_api.hpp>
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#include <cstdint>
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#include <functional>
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#include <iostream>
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#include <limits>
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#include <map>
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#include <memory>
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#include <sstream>
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#include <string>
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#include <vector>
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// Simple single-threaded example of TDLib usage.
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// Real world programs should use separate thread for the user input.
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// Example includes user authentication, receiving updates, getting chat list and sending text messages.
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// overloaded
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namespace detail {
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template <class... Fs>
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struct overload;
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template <class F>
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struct overload<F> : public F {
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explicit overload(F f) : F(f) {
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}
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};
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template <class F, class... Fs>
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struct overload<F, Fs...>
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: public overload<F>
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, overload<Fs...> {
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overload(F f, Fs... fs) : overload<F>(f), overload<Fs...>(fs...) {
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}
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using overload<F>::operator();
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using overload<Fs...>::operator();
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};
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} // namespace detail
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template <class... F>
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auto overloaded(F... f) {
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return detail::overload<F...>(f...);
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}
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namespace td_api = td::td_api;
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class TdExample {
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public:
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TdExample() {
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td::Client::execute({0, td_api::make_object<td_api::setLogVerbosityLevel>(1)});
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client_ = std::make_unique<td::Client>();
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}
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void loop() {
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while (true) {
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if (need_restart_) {
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restart();
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} else if (!are_authorized_) {
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process_response(client_->receive(10));
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} else {
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std::cerr << "Enter action [q] quit [u] check for updates and request results [c] show chats [m <id> <text>] "
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"send message [me] show self [l] logout: "
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<< std::endl;
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std::string line;
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std::getline(std::cin, line);
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std::istringstream ss(line);
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std::string action;
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if (!(ss >> action)) {
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continue;
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}
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if (action == "q") {
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return;
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}
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if (action == "u") {
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std::cerr << "Checking for updates..." << std::endl;
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while (true) {
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auto response = client_->receive(0);
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if (response.object) {
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process_response(std::move(response));
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} else {
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break;
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}
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}
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} else if (action == "close") {
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std::cerr << "Closing..." << std::endl;
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send_query(td_api::make_object<td_api::close>(), {});
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} else if (action == "me") {
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send_query(td_api::make_object<td_api::getMe>(),
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[this](Object object) { std::cerr << to_string(object) << std::endl; });
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} else if (action == "l") {
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std::cerr << "Logging out..." << std::endl;
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send_query(td_api::make_object<td_api::logOut>(), {});
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} else if (action == "m") {
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std::int64_t chat_id;
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ss >> chat_id;
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ss.get();
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std::string text;
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std::getline(ss, text);
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std::cerr << "Sending message to chat " << chat_id << "..." << std::endl;
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auto send_message = td_api::make_object<td_api::sendMessage>();
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send_message->chat_id_ = chat_id;
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auto message_content = td_api::make_object<td_api::inputMessageText>();
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message_content->text_ = td_api::make_object<td_api::formattedText>();
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message_content->text_->text_ = std::move(text);
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send_message->input_message_content_ = std::move(message_content);
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send_query(std::move(send_message), {});
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} else if (action == "c") {
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std::cerr << "Loading chat list..." << std::endl;
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send_query(td_api::make_object<td_api::getChats>(std::numeric_limits<std::int64_t>::max(), 0, 20),
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[this](Object object) {
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if (object->get_id() == td_api::error::ID) {
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return;
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}
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auto chats = td::move_tl_object_as<td_api::chats>(object);
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for (auto chat_id : chats->chat_ids_) {
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std::cerr << "[id:" << chat_id << "] [title:" << chat_title_[chat_id] << "]" << std::endl;
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}
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});
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}
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}
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}
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}
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private:
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using Object = td_api::object_ptr<td_api::Object>;
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std::unique_ptr<td::Client> client_;
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td_api::object_ptr<td_api::AuthorizationState> authorization_state_;
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bool are_authorized_{false};
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bool need_restart_{false};
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std::uint64_t current_query_id_{0};
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std::uint64_t authentication_query_id_{0};
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std::map<std::uint64_t, std::function<void(Object)>> handlers_;
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std::map<std::int32_t, td_api::object_ptr<td_api::user>> users_;
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std::map<std::int64_t, std::string> chat_title_;
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void restart() {
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client_.reset();
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*this = TdExample();
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}
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void send_query(td_api::object_ptr<td_api::Function> f, std::function<void(Object)> handler) {
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auto query_id = next_query_id();
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if (handler) {
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handlers_.emplace(query_id, std::move(handler));
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}
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client_->send({query_id, std::move(f)});
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}
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void process_response(td::Client::Response response) {
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if (!response.object) {
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return;
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}
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//std::cerr << response.id << " " << to_string(response.object) << std::endl;
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if (response.id == 0) {
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return process_update(std::move(response.object));
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}
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auto it = handlers_.find(response.id);
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if (it != handlers_.end()) {
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it->second(std::move(response.object));
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}
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}
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std::string get_user_name(std::int32_t user_id) {
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auto it = users_.find(user_id);
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if (it == users_.end()) {
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return "unknown user";
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}
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return it->second->first_name_ + " " + it->second->last_name_;
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}
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void process_update(td_api::object_ptr<td_api::Object> update) {
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td_api::downcast_call(
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*update, overloaded(
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[this](td_api::updateAuthorizationState &update_authorization_state) {
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authorization_state_ = std::move(update_authorization_state.authorization_state_);
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on_authorization_state_update();
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},
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[this](td_api::updateNewChat &update_new_chat) {
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chat_title_[update_new_chat.chat_->id_] = update_new_chat.chat_->title_;
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},
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[this](td_api::updateChatTitle &update_chat_title) {
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chat_title_[update_chat_title.chat_id_] = update_chat_title.title_;
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},
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[this](td_api::updateUser &update_user) {
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auto user_id = update_user.user_->id_;
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users_[user_id] = std::move(update_user.user_);
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},
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[this](td_api::updateNewMessage &update_new_message) {
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auto chat_id = update_new_message.message_->chat_id_;
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auto sender_user_name = get_user_name(update_new_message.message_->sender_user_id_);
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std::string text;
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if (update_new_message.message_->content_->get_id() == td_api::messageText::ID) {
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text = static_cast<td_api::messageText &>(*update_new_message.message_->content_).text_->text_;
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}
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std::cerr << "Got message: [chat_id:" << chat_id << "] [from:" << sender_user_name << "] ["
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<< text << "]" << std::endl;
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},
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[](auto &update) {}));
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}
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auto create_authentication_query_handler() {
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return [this, id = authentication_query_id_](Object object) {
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if (id == authentication_query_id_) {
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check_authentication_error(std::move(object));
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}
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};
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}
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void on_authorization_state_update() {
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authentication_query_id_++;
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td_api::downcast_call(
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*authorization_state_,
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overloaded(
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[this](td_api::authorizationStateReady &) {
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are_authorized_ = true;
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std::cerr << "Got authorization" << std::endl;
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},
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[this](td_api::authorizationStateLoggingOut &) {
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are_authorized_ = false;
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std::cerr << "Logging out" << std::endl;
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},
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[this](td_api::authorizationStateClosing &) { std::cerr << "Closing" << std::endl; },
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[this](td_api::authorizationStateClosed &) {
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are_authorized_ = false;
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need_restart_ = true;
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std::cerr << "Terminated" << std::endl;
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},
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[this](td_api::authorizationStateWaitCode &wait_code) {
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std::string first_name;
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std::string last_name;
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if (!wait_code.is_registered_) {
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std::cerr << "Enter your first name: ";
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std::cin >> first_name;
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std::cerr << "Enter your last name: ";
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std::cin >> last_name;
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}
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std::cerr << "Enter authentication code: ";
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std::string code;
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std::cin >> code;
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send_query(td_api::make_object<td_api::checkAuthenticationCode>(code, first_name, last_name),
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create_authentication_query_handler());
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},
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[this](td_api::authorizationStateWaitPassword &) {
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std::cerr << "Enter authentication password: ";
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std::string password;
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std::cin >> password;
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send_query(td_api::make_object<td_api::checkAuthenticationPassword>(password),
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create_authentication_query_handler());
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},
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[this](td_api::authorizationStateWaitPhoneNumber &) {
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std::cerr << "Enter phone number: ";
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std::string phone_number;
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std::cin >> phone_number;
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send_query(td_api::make_object<td_api::setAuthenticationPhoneNumber>(phone_number, nullptr),
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create_authentication_query_handler());
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},
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[this](td_api::authorizationStateWaitEncryptionKey &) {
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std::cerr << "Enter encryption key or DESTROY: ";
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std::string key;
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std::getline(std::cin, key);
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if (key == "DESTROY") {
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send_query(td_api::make_object<td_api::destroy>(), create_authentication_query_handler());
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} else {
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send_query(td_api::make_object<td_api::checkDatabaseEncryptionKey>(std::move(key)),
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create_authentication_query_handler());
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}
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},
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[this](td_api::authorizationStateWaitTdlibParameters &) {
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auto parameters = td_api::make_object<td_api::tdlibParameters>();
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parameters->database_directory_ = "tdlib";
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parameters->use_message_database_ = true;
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parameters->use_secret_chats_ = true;
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parameters->api_id_ = 94575;
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parameters->api_hash_ = "a3406de8d171bb422bb6ddf3bbd800e2";
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parameters->system_language_code_ = "en";
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parameters->device_model_ = "Desktop";
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parameters->system_version_ = "Unknown";
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parameters->application_version_ = "1.0";
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parameters->enable_storage_optimizer_ = true;
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send_query(td_api::make_object<td_api::setTdlibParameters>(std::move(parameters)),
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create_authentication_query_handler());
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}));
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}
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void check_authentication_error(Object object) {
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if (object->get_id() == td_api::error::ID) {
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auto error = td::move_tl_object_as<td_api::error>(object);
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std::cerr << "Error: " << to_string(error);
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on_authorization_state_update();
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}
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}
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std::uint64_t next_query_id() {
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return ++current_query_id_;
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}
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};
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int main() {
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TdExample example;
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example.loop();
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}
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