added sendVideo and receiveVideo examples

examples/receiveAudio/CMakeLists.txt

@@ -12,6 +12,4 @@ FetchContent_Declare(tgbotxx
 FetchContent_MakeAvailable(tgbotxx)
 
 add_executable(${PROJECT_NAME} main.cpp)
-target_link_libraries(${PROJECT_NAME} PUBLIC tgbotxx)
-
-add_compile_definitions(PHOTOS_DIR="${CMAKE_CURRENT_SOURCE_DIR}/photos")
+target_link_libraries(${PROJECT_NAME} PUBLIC tgbotxx)

examples/receiveDocument/CMakeLists.txt

@@ -12,6 +12,4 @@ FetchContent_Declare(tgbotxx
 FetchContent_MakeAvailable(tgbotxx)
 
 add_executable(${PROJECT_NAME} main.cpp)
-target_link_libraries(${PROJECT_NAME} PUBLIC tgbotxx)
-
-add_compile_definitions(PHOTOS_DIR="${CMAKE_CURRENT_SOURCE_DIR}/photos")
+target_link_libraries(${PROJECT_NAME} PUBLIC tgbotxx)

examples/receivePhoto/CMakeLists.txt

@@ -13,5 +13,3 @@ FetchContent_MakeAvailable(tgbotxx)
 
 add_executable(${PROJECT_NAME} main.cpp)
 target_link_libraries(${PROJECT_NAME} PUBLIC tgbotxx)
-
-add_compile_definitions(PHOTOS_DIR="${CMAKE_CURRENT_SOURCE_DIR}/photos")

examples/receiveVideo/CMakeLists.txt

@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.10)
+project(receive_video_bot)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+include(FetchContent)
+FetchContent_Declare(tgbotxx
+        GIT_REPOSITORY "https://github.com/baderouaich/tgbotxx"
+        GIT_TAG         main
+        )
+FetchContent_MakeAvailable(tgbotxx)
+
+add_executable(${PROJECT_NAME} main.cpp)
+target_link_libraries(${PROJECT_NAME} PUBLIC tgbotxx)

examples/receiveVideo/README.md

@@ -0,0 +1,18 @@
+## Receive video
+This example shows how to program a Telegram Bot that will receive videos from users
+using the `Api::getFile()` and `Api::downloadFile()` api methods.
+
+
+### Run
+```bash
+mkdir build && cd build
+cmake .. -DCMAKE_BUILD_TYPE=Release
+make -j8
+./photo_bot YOUR_BOT_TOKEN
+```
+
+### How to create a new Bot and obtain its private token ?
+1. Open the Telegram mobile app and search BotFather
+2. Send BotFather a command /newbot
+3. Follow instructions to create a new Bot
+4. After you finish the instructions, you will receive a Bot Token, make sure you keep it secured.

examples/receiveVideo/main.cpp

@@ -0,0 +1,58 @@
+#include <csignal>
+#include <iostream>
+#include <tgbotxx/tgbotxx.hpp>
+using namespace tgbotxx;
+#include <filesystem>
+namespace fs = std::filesystem;
+
+class ReceiveVideoBot : public Bot {
+  public:
+    ReceiveVideoBot(const std::string& token) : Bot(token) {}
+
+  private:
+    void onStart() override {
+      std::cout << "Bot " << api()->getMe()->username << " Started\n";
+    }
+
+    void onAnyMessage(const Ptr<Message>& message) override {
+      if (message->video) {
+        // Download video bytes from Telegram
+        Ptr<File> videoFile = api()->getFile(message->video->fileId);
+        std::string bytes = api()->downloadFile(videoFile->filePath, [](auto downloadTotal, auto downloadNow) -> bool {
+          std::cout << "Downloading video " << downloadNow << "/" <<downloadTotal << " bytes..." <<std::endl;
+          return true;
+        });
+
+        // Save video to a file
+        fs::path filename = fs::path(videoFile->filePath).filename();
+        std::ofstream ofs{filename, std::ios::binary};
+        ofs << bytes;
+        ofs.close();
+
+        std::cout << "Downloaded video to " << filename.string() << " (" << bytes.size() << " bytes)\n";
+      }
+    }
+
+    void onStop() override {
+      std::cout << "Bot " << api()->getMe()->username << " Stopped\n";
+    }
+};
+
+
+int main(int argc, const char *argv[]) {
+  if (argc < 2) {
+    std::cerr << "Usage:\nreceive_video_bot \"BOT_TOKEN\"\n";
+    return EXIT_FAILURE;
+  }
+
+  static std::unique_ptr<ReceiveVideoBot> BOT(new ReceiveVideoBot(argv[1]));
+  std::signal(SIGINT, [](int) { // Graceful Bot exit on CTRL+C
+    if (BOT) {
+      std::cout << "Stopping Bot. Please wait...\n";
+      BOT->stop();
+    }
+    std::exit(EXIT_SUCCESS);
+  });
+  BOT->start();
+  return EXIT_SUCCESS;
+}

examples/sendVideo/CMakeLists.txt

@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 3.10)
+project(send_video_bot)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+include(FetchContent)
+FetchContent_Declare(tgbotxx
+        GIT_REPOSITORY "https://github.com/baderouaich/tgbotxx"
+        GIT_TAG         main
+        )
+FetchContent_MakeAvailable(tgbotxx)
+
+add_executable(${PROJECT_NAME} main.cpp)
+target_link_libraries(${PROJECT_NAME} PUBLIC tgbotxx)
+
+add_compile_definitions(VIDEOS_DIR="${CMAKE_CURRENT_SOURCE_DIR}/videos")

examples/sendVideo/README.md

@@ -0,0 +1,16 @@
+## Send photo
+This example shows how to program a Telegram Bot that will send users photos using the `Api::sendPhoto()` method.
+
+### Run
+```bash
+mkdir build && cd build
+cmake .. -DCMAKE_BUILD_TYPE=Release
+make -j8
+./photo_bot YOUR_BOT_TOKEN
+```
+
+### How to create a new Bot and obtain its private token ?
+1. Open the Telegram mobile app and search BotFather
+2. Send BotFather a command /newbot
+3. Follow instructions to create a new Bot
+4. After you finish the instructions, you will receive a Bot Token, make sure you keep it secured.

examples/sendVideo/main.cpp

@@ -0,0 +1,79 @@
+#include <tgbotxx/tgbotxx.hpp>
+#include <cpr/cpr.h>
+#include <iostream>
+#include <algorithm>
+#include <csignal>
+#include <array>
+using namespace tgbotxx;
+
+class VideoBot : public Bot {
+public:
+  VideoBot(const std::string &token) : Bot(token) {}
+
+private:
+  void onStart() override {
+    // Drop pending updates
+    api()->deleteWebhook(true);
+
+    // Register my commands 
+    Ptr<BotCommand> localVideoCmd(new BotCommand());
+    localVideoCmd->command = "/local_video";
+    localVideoCmd->description = "Get video from bot videos/ directory";
+    Ptr<BotCommand> networkVideoCmd(new BotCommand());
+    networkVideoCmd->command = "/network_video";
+    networkVideoCmd->description = "Get video from the internet (URL)";
+    api()->setMyCommands({localVideoCmd, networkVideoCmd});
+
+    std::cout << "Bot " << api()->getMe()->username << " Started\n";
+    std::srand(std::time(nullptr));
+  }
+
+  void onCommand(const Ptr<Message> &message) override
+  {
+    if (message->text == "/local_video")
+    {
+      cpr::File video(std::string(VIDEOS_DIR) + "/video.mp4");
+      api()->sendVideo(message->chat->id, video);
+    }
+    else if (message->text == "/network_video")
+    {
+      static std::array<std::string, 6> imageUrls = {
+        // Bots can currently send video files of up to 50 MB in size, this limit may be changed in the future.
+        "https://www.pexels.com/download/video/5752729/?fps=30.0&h=240&w=426",
+        "https://www.pexels.com/download/video/3209828/?fps=25.0&h=240&w=426",
+        "https://www.pexels.com/download/video/5532765/?fps=25.0&h=426&w=226",
+        "https://www.pexels.com/download/video/5532771/?fps=25.0&h=426&w=226",
+        "https://www.pexels.com/download/video/5722113/?fps=25.0&h=426&w=226",
+        "https://www.pexels.com/download/video/7220850/?fps=25.0&h=426&w=226"
+      };
+      std::string randomVideoUrl = imageUrls[std::rand() % imageUrls.size()];
+      std::cout << randomVideoUrl << std::endl;
+      api()->sendVideo(message->chat->id, randomVideoUrl);
+    }
+  }
+
+  void onStop() override
+  {
+    std::cout << "Bot " << api()->getMe()->username << " Stopped\n";
+  }
+
+};
+
+
+int main(int argc, const char *argv[]) {
+  if (argc < 2) {
+    std::cerr << "Usage:\nsend_video_bot \"BOT_TOKEN\"\n";
+    return EXIT_FAILURE;
+  }
+
+  static std::unique_ptr<VideoBot> BOT(new VideoBot(argv[1]));
+  std::signal(SIGINT, [](int) { // Graceful Bot exit on CTRL+C
+    if(BOT) {
+      std::cout << "Stopping Bot. Please wait...\n";
+      BOT->stop();
+    }
+    std::exit(EXIT_SUCCESS);
+  });
+  BOT->start();
+  return EXIT_SUCCESS;
+}