Method executeTask

launcher/modplatform/modrinth/ModrinthCheckUpdate.cpp:28–179

Check for update: * - Get latest version available * - Compare hash of the latest version with the current hash * - If equal, no updates, else, there's updates, so add to the list * */

 * - If equal, no updates, else, there's updates, so add to the list
 * */
void ModrinthCheckUpdate::executeTask()
{
    setStatus(tr("Preparing mods for Modrinth..."));
    setProgress(0, 3);

    QHash<QString, Mod*> mappings;

    // Create all hashes
    QStringList hashes;
    auto best_hash_type = ProviderCaps.hashType(ModPlatform::Provider::MODRINTH).first();

    ConcurrentTask hashing_task(this, "MakeModrinthHashesTask", 10);
    for (auto* mod : m_mods) {
        if (!mod->enabled()) {
            emit checkFailed(mod, tr("Disabled mods won't be updated, to prevent mod duplication issues!"));
            continue;
        }

        auto hash = mod->metadata()->hash;

        // Sadly the API can only handle one hash type per call, se we
        // need to generate a new hash if the current one is innadequate
        // (though it will rarely happen, if at all)
        if (mod->metadata()->hash_format != best_hash_type) {
            auto hash_task = Hashing::createModrinthHasher(mod->fileinfo().absoluteFilePath());
            connect(hash_task.get(), &Task::succeeded, [&] {
                QString hash (hash_task->getResult());
                hashes.append(hash);
                mappings.insert(hash, mod);
            });
            connect(hash_task.get(), &Task::failed, [this, hash_task] { failed("Failed to generate hash"); });
            hashing_task.addTask(hash_task);
        } else {
            hashes.append(hash);
            mappings.insert(hash, mod);
        }
    }

    QEventLoop loop;
    connect(&hashing_task, &Task::finished, [&loop]{ loop.quit(); });
    hashing_task.start();
    loop.exec();

    auto* response = new QByteArray();
    auto job = api.latestVersions(hashes, best_hash_type, m_game_versions, m_loaders, response);

    QEventLoop lock;

    connect(job.get(), &Task::succeeded, this, [this, response, &mappings, best_hash_type, job] {
        QJsonParseError parse_error{};
        QJsonDocument doc = QJsonDocument::fromJson(*response, &parse_error);
        if (parse_error.error != QJsonParseError::NoError) {
            qWarning() << "Error while parsing JSON response from ModrinthCheckUpdate at " << parse_error.offset
                       << " reason: " << parse_error.errorString();
            qWarning() << *response;

            failed(parse_error.errorString());
            return;