yt2.cpp

yt2.cpp

#include <iostream>
#include <fstream>
#include <sstream>
#include <string>
#include <cstdlib>
#include <curl/curl.h>
#include <nlohmann/json.hpp>

using json = nlohmann::json;

std::string readFile(const std::string &path) {
    std::ifstream file(path, std::ios::binary);
    if (!file) throw std::runtime_error("Cannot open file: " + path);
    std::ostringstream oss;
    oss << file.rdbuf();
    return oss.str();
}

static size_t writeCallback(void *contents, size_t size, size_t nmemb, void *userp) {
    ((std::string*)userp)->append((char*)contents, size * nmemb);
    return size * nmemb;
}

int main(void) {
    try {
        std::string accessToken = "YOUR_OAUTH2_ACCESS_TOKEN";
        std::string videoPath   = "video.mp4";
        std::string title       = "Title name goes here";
        std::string description = "Describe me";
        std::string categoryId  = "20";
        std::string privacy     = "private";

        json metadata = {
            {"snippet", {
                {"title", title},
                {"description", description},
                {"categoryId", categoryId}
            }},
            {"status", {
                {"privacyStatus", privacy}
            }}
        };
        std::string metadataStr = metadata.dump();
        std::string videoData = readFile(videoPath);
        std::string boundary = "----YouTubeBoundary123456";
        std::ostringstream body;
        body << "--" << boundary << "\r\n"
             << "Content-Type: application/json; charset=UTF-8\r\n\r\n"
             << metadataStr << "\r\n"
             << "--" << boundary << "\r\n"
             << "Content-Type: video/mp4\r\n\r\n"
             << videoData << "\r\n"
             << "--" << boundary << "--\r\n";

        std::string requestBody = body.str();

        CURL *curl = curl_easy_init();
        if (!curl) throw std::runtime_error("Failed to init CURL");
        std::string response;
        struct curl_slist *headers = nullptr;
        headers = curl_slist_append(headers, ("Authorization: Bearer " + accessToken).c_str());
        headers = curl_slist_append(headers, ("Content-Type: multipart/related; boundary=" + boundary).c_str());
        curl_easy_setopt(curl, CURLOPT_URL, "https://www.googleapis.com/upload/youtube/v3/videos?uploadType=multipart&part=snippet,status");
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
        curl_easy_setopt(curl, CURLOPT_POSTFIELDS, requestBody.c_str());
        curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, requestBody.size());
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writeCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response);
        CURLcode res = curl_easy_perform(curl);
        if (res != CURLE_OK) {
            throw std::runtime_error("CURL error: " + std::string(curl_easy_strerror(res)));
        }
        std::cout << "YouTube API Response:\n" << response << "\n";
        curl_slist_free_all(headers);
        curl_easy_cleanup(curl);

    } catch (const std::exception &ex) {
        std::cerr << "Error: " << ex.what() << "\n";
        return EXIT_FAILURE;
    }

    return EXIT_SUCCESS;
}