Google Sign-In Qt6 Desktop Working Code

[Fitndex-developer]

I had trouble finding a working example for the google API in Qt6 of any kind so I thought I would drop the code here for you all to have. Once I figure out the mobile side of things, I'll be back with an update. Any pointers on how to pull that redirect_uri off on mobile would be helpful. I'm playing with native and php methods at the moment. But I'm not sure which method is going to produce.

Steve

QString clientId = "CLIENT ID FROM API CREDENTIALS";
QString authUri = "https://accounts.google.com/o/oauth2/auth";
QString tokenUri = "https://accounts.google.com/o/oauth2/token";
QStringList redirectUris;
    redirectUris << "http://127.0.0.1:54321/"; //ensure this is included in the API credentials under authorized URI
    QString redirectUri = redirectUris[0];
    QString clientSecret = "YOUR CLIENT SECRET FROM API CREDENTIALS";
    auto google = new QOAuth2AuthorizationCodeFlow(this);
    google->setScope("email");
    google->setAuthorizationUrl(authUri);
    google->setClientIdentifier(clientId);
    google->setAccessTokenUrl(tokenUri);
    google->setClientIdentifierSharedKey(clientSecret);

    // Use the same port number as above
    auto replyHandler = new QOAuthHttpServerReplyHandler(54321, this);
    google->setReplyHandler(replyHandler);

    // Set up the function to modify AND REPLACE the parameters
    google->setModifyParametersFunction([](QAbstractOAuth::Stage stage, QMultiMap<QString, QVariant>* parameters) {
        if (stage == QAbstractOAuth::Stage::RequestingAccessToken) {
            auto encodedCode = parameters->value("code").toByteArray();
            parameters->replace("code", QUrl::fromPercentEncoding(encodedCode));
        }
    });

    // Connect the signals to retrieve the tokens, if you want to see them
    connect(google, &QOAuth2AuthorizationCodeFlow::tokenChanged, [=](const QString &token)
            {
                qDebug() << "Token changed:" << token;

            });
    connect(replyHandler, &QOAuthHttpServerReplyHandler::tokensReceived, [](const QVariantMap &tokens)
            {
                qDebug() << "Tokens received:" << tokens;
            });

    connect(google, &QOAuth2AuthorizationCodeFlow::authorizeWithBrowser, &QDesktopServices::openUrl);

    // Once you are granted access, make a request via the Google API
    connect(google, &QOAuth2AuthorizationCodeFlow::granted, [=]
            {
                qDebug() << "in the granted block now";
                // This block is run once you have logged into the browser successfully

                auto rep = google->get(QUrl("https://www.googleapis.com/oauth2/v1/userinfo?alt=json"));
                QEventLoop loop;
                connect(rep, &QNetworkReply::finished, &loop, &QEventLoop::quit);
                loop.exec();
                QString currentByteArray = rep->readAll();
                qDebug() << "network reply google api connect step get info" << currentByteArray;

            });

    google->grant();

[franco.amato]

Where did you use the redirectUri? It does not appear in your code