add file sample

Author: ctuh

samples/file/CMakeLists.txt

@@ -0,0 +1,21 @@
+cmake_minimum_required(VERSION 3.10.2)
+project(file)
+
+set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
+set(Boost_USE_MULTITHREADED ON)
+
+find_package(Threads REQUIRED)
+find_package(OpenSSL REQUIRED)
+find_package(Boost COMPONENTS system REQUIRED)
+find_package(CURL)
+include_directories(/usr/local/include ${OPENSSL_INCLUDE_DIR} ${Boost_INCLUDE_DIR})
+if (CURL_FOUND)
+    include_directories(${CURL_INCLUDE_DIRS})
+    add_definitions(-DHAVE_CURL)
+endif()
+
+add_executable(file src/main.cpp)
+
+target_link_libraries(file /usr/local/lib/libTgBot.a ${CMAKE_THREAD_LIBS_INIT} ${OPENSSL_LIBRARIES} ${Boost_LIBRARIES} ${CURL_LIBRARIES})

samples/file/Dockerfile

@@ -0,0 +1,8 @@
+FROM reo7sp/tgbot-cpp
+MAINTAINER Oleg Morozenkov <m@oleg.rocks>
+
+WORKDIR /usr/src/photo
+COPY . .
+RUN cmake .
+RUN make -j4
+CMD ./photo

samples/file/src/main.cpp

@@ -0,0 +1,52 @@
+#include <csignal>
+#include <cstdio>
+#include <cstdlib>
+#include <exception>
+#include <string>
+
+#include <tgbot/tgbot.h>
+
+
+using namespace std;
+using namespace TgBot;
+
+int main() {
+    string token(getenv("TOKEN"));
+    printf("Token: %s\n", token.c_str());
+
+    Bot bot(token);
+    bot.getEvents().onCommand("start", [&bot](Message::Ptr message) {
+        bot.getApi().sendMessage(message->chat->id, "Hi!");
+    });
+    bot.getEvents().onAnyMessage([&bot](Message::Ptr message) {
+        printf("User wrote %s\n", message->text.c_str());
+
+        File::Ptr file = bot.getApi().getFile(message->document->fileId);
+        std::string fileContent = bot.getApi().downloadFile(file->filePath);
+
+        if (StringTools::startsWith(message->text, "/start")) {
+            return;
+        }
+        bot.getApi().sendMessage(message->chat->id, "Your file content: " + fileContent);
+    });
+
+    signal(SIGINT, [](int s) {
+        printf("SIGINT got\n");
+        exit(0);
+    });
+
+    try {
+        printf("Bot username: %s\n", bot.getApi().getMe()->username.c_str());
+        bot.getApi().deleteWebhook();
+
+        TgLongPoll longPoll(bot);
+        while (true) {
+            printf("Long poll started\n");
+            longPoll.start();
+        }
+    } catch (exception& e) {
+        printf("error: %s\n", e.what());
+    }
+
+    return 0;
+}