firstAttemt

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.10)
+
+project(TelegramBot)
+
+set(CMAKE_CXX_STANDARD 14)
+
+find_package(Threads REQUIRED)
+
+add_executable(${PROJECT_NAME} main.cpp bot.cpp)
+
+target_include_directories(${PROJECT_NAME} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
+
+target_link_libraries(${PROJECT_NAME} PRIVATE TgBot Threads::Threads)
+find_package(tgbot-cpp REQUIRED)
+target_link_libraries(${PROJECT_NAME} PRIVATE TgBot)

bot.cpp

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+#include "bot.h"
+
+
+namespace fs = std::filesystem;
+
+Bot::Bot(const std::string& token) : botToken(token), bot(token) {
+    // Инициализация бота
+    bot.getEvents().onCommand("list", [this](TgBot::Message::Ptr message) {
+        handleCommand(message);
+    });
+    bot.getEvents().onCommand("get", [this](TgBot::Message::Ptr message) {
+        if (!message->text.empty()) {
+            sendFile(message, message->text);
+        }
+    });
+}
+
+void Bot::run() {
+    bot.getApi().deleteWebhook();
+    TgBot::TgLongPoll longPoll(bot);
+
+    while (true) {
+        try {
+            longPoll.start();
+        } catch (const std::exception& e) {
+            std::cerr << "Exception: " << e.what() << std::endl;
+        }
+    }
+}
+
+void Bot::handleCommand(const TgBot::Message::Ptr& message) {
+    if (message->text == "/list") {
+        std::async(std::launch::async, &Bot::updateCacheAsync, this);
+        sendFileList(message);
+    }
+}
+
+void Bot::updateCacheAsync() {
+    std::lock_guard<std::mutex> lock(cacheMutex);
+    fileCache.clear();
+
+    for (const auto& entry : fs::directory_iterator("/home/pi/study")) {
+        fileCache.push_back(entry.path().filename().string());
+    }
+}
+
+void Bot::sendFileList(const TgBot::Message::Ptr& message) {
+    std::lock_guard<std::mutex> lock(cacheMutex);
+    std::string fileList = "Current files:\n";
+    for (const auto& file : fileCache) {
+        fileList += file + "\n";
+    }
+    bot.getApi().sendMessage(message->chat->id, fileList);
+}
+
+
+void Bot::sendFile(const TgBot::Message::Ptr& message, const std::string& fileName) {
+    std::ifstream file(fileName, std::ios::binary);
+    if (file) {
+        // Читаем содержимое файла в строковый поток (stringstream)
+        std::stringstream fileContents;
+        fileContents << file.rdbuf();
+        
+        // Отправляем документ, передавая строковый поток в конструктор InputFile::fromFile
+        bot.getApi().sendDocument(message->chat->id, TgBot::InputFile::fromFile(fileName, fileContents.str()));
+    } else {
+        bot.getApi().sendMessage(message->chat->id, "File not found: " + fileName);
+    }
+}

bot.h

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+#pragma once
+
+#include <TgBot/TgBot.h>
+#include <filesystem>
+#include <vector>
+#include <mutex>
+#include <future>
+
+class Bot {
+public:
+    Bot(const std::string& token);
+    void run();
+
+private:
+    void handleCommand(const TgBot::Message::Ptr& message);
+    void sendFileList(const TgBot::Message::Ptr& message);
+    void sendFile(const TgBot::Message::Ptr& message, const std::string& fileName);
+    void updateCacheAsync();
+
+private:
+    std::string botToken;
+    TgBot::Bot bot;
+    std::vector<std::string> fileCache;
+    std::mutex cacheMutex;
+};

main.cpp

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+#include "bot.h"
+
+int main() {
+    const std::string token = "YOUR_BOT_TOKEN";
+    Bot bot(token);
+    bot.start();
+    return 0;
+}