#include "providers/RawgProvider.h"

#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QNetworkRequest>
#include <QUrlQuery>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonArray>

namespace umt {

RawgProvider::RawgProvider(QObject *parent)
    : MetadataProvider(parent)
    , m_nam(new QNetworkAccessManager(this))
{
}

void RawgProvider::search(const QString &query, MediaType)
{
    if (m_apiKey.trimmed().isEmpty()) {
        emit failed(QStringLiteral(
            "Für Spiele bitte einen kostenlosen RAWG API-Key in den "
            "Einstellungen hinterlegen (rawg.io/apidocs)."));
        return;
    }

    QUrl url(QStringLiteral("https://api.rawg.io/api/games"));
    QUrlQuery q;
    q.addQueryItem(QStringLiteral("key"), m_apiKey.trimmed());
    q.addQueryItem(QStringLiteral("search"), query);
    q.addQueryItem(QStringLiteral("page_size"), QStringLiteral("25"));
    url.setQuery(q);

    QNetworkRequest req(url);
    req.setHeader(QNetworkRequest::UserAgentHeader,
                  QStringLiteral("UltimateMediaTracker/1.0"));
    QNetworkReply *r = m_nam->get(req);
    connect(r, &QNetworkReply::finished, this, [this, r]() {
        r->deleteLater();
        if (r->error() != QNetworkReply::NoError) {
            emit failed(QStringLiteral("RAWG: ") + r->errorString());
            return;
        }
        const QJsonDocument doc = QJsonDocument::fromJson(r->readAll());
        QVector<SearchResult> out;
        const QJsonArray games = doc.object().value(QStringLiteral("results")).toArray();
        for (const QJsonValue &v : games) {
            const QJsonObject o = v.toObject();
            SearchResult res;
            res.type   = MediaType::Game;
            res.source = name();
            res.title  = o.value(QStringLiteral("name")).toString();
            res.externalId = QString::number(o.value(QStringLiteral("id")).toInt());

            // "released" is an ISO date like "2017-03-03"; take the year prefix.
            const QString released = o.value(QStringLiteral("released")).toString();
            if (released.size() >= 4)
                res.year = released.left(4).toInt();

            res.coverUrl = o.value(QStringLiteral("background_image")).toString();
            res.externalRating = o.value(QStringLiteral("rating")).toDouble();

            const QJsonArray genres = o.value(QStringLiteral("genres")).toArray();
            for (const QJsonValue &gv : genres) {
                const QString g = gv.toObject().value(QStringLiteral("name")).toString();
                if (!g.isEmpty()) res.genres << g;
            }
            out.push_back(res);
        }
        emit searchFinished(out);
    });
}

} // namespace umt