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#include "qandroidplatformfiledialoghelper.h"

#include <androidjnimain.h>
#include <private/qjni_p.h>
#include <jni.h>

QT_BEGIN_NAMESPACE

namespace QtAndroidFileDialogHelper {

#define RESULT_OK -1
#define REQUEST_CODE 1305 // Arbitrary

QAndroidPlatformFileDialogHelper::QAndroidPlatformFileDialogHelper()
    : QPlatformFileDialogHelper()
    , m_selectedFile()
{
}

bool QAndroidPlatformFileDialogHelper::handleActivityResult(jint requestCode, jint resultCode, jobject data)
{
    if (requestCode != REQUEST_CODE)
        return false;

    if (resultCode == RESULT_OK) {
        const QJNIObjectPrivate intent = QJNIObjectPrivate::fromLocalRef(data);
        const QJNIObjectPrivate uri = intent.callObjectMethod("getData", "()Landroid/net/Uri;");
        const QString uriStr = uri.callObjectMethod("toString", "()Ljava/lang/String;").toString();
        m_selectedFile = QUrl(uriStr);
        Q_EMIT fileSelected(m_selectedFile);
        Q_EMIT accept();
    } else {
        Q_EMIT reject();
    }

    return true;
}

bool QAndroidPlatformFileDialogHelper::show(Qt::WindowFlags windowFlags, Qt::WindowModality windowModality, QWindow *parent)
{
    Q_UNUSED(windowFlags)
    Q_UNUSED(windowModality)
    Q_UNUSED(parent)

    if (options()->fileMode() != QFileDialogOptions::FileMode::ExistingFile)
        return false;

    QtAndroidPrivate::registerActivityResultListener(this);

    const QJNIObjectPrivate ACTION_OPEN_DOCUMENT = QJNIObjectPrivate::getStaticObjectField("android/content/Intent", "ACTION_OPEN_DOCUMENT", "Ljava/lang/String;");
    QJNIObjectPrivate intent("android/content/Intent", "(Ljava/lang/String;)V", ACTION_OPEN_DOCUMENT.object());
    const QJNIObjectPrivate CATEGORY_OPENABLE = QJNIObjectPrivate::getStaticObjectField("android/content/Intent", "CATEGORY_OPENABLE", "Ljava/lang/String;");
    intent.callObjectMethod("addCategory", "(Ljava/lang/String;)Landroid/content/Intent;", CATEGORY_OPENABLE.object());
    intent.callObjectMethod("setType", "(Ljava/lang/String;)Landroid/content/Intent;", QJNIObjectPrivate::fromString(QStringLiteral("*/*")).object());

    const QJNIObjectPrivate activity(QtAndroid::activity());
    activity.callMethod<void>("startActivityForResult", "(Landroid/content/Intent;I)V", intent.object(), REQUEST_CODE);

    return true;
}

void QAndroidPlatformFileDialogHelper::exec()
{
}

void QAndroidPlatformFileDialogHelper::hide()
{
}

QString QAndroidPlatformFileDialogHelper::selectedNameFilter() const
{
    return QString();
}

void QAndroidPlatformFileDialogHelper::selectNameFilter(const QString &filter)
{
    Q_UNUSED(filter)
}

void QAndroidPlatformFileDialogHelper::setFilter()
{
}

QList<QUrl> QAndroidPlatformFileDialogHelper::selectedFiles() const
{
    return {m_selectedFile};
}

void QAndroidPlatformFileDialogHelper::selectFile(const QUrl &file)
{
    Q_UNUSED(file)
}

QUrl QAndroidPlatformFileDialogHelper::directory() const
{
    return QUrl();
}

void QAndroidPlatformFileDialogHelper::setDirectory(const QUrl &directory)
{
    Q_UNUSED(directory)
}

bool QAndroidPlatformFileDialogHelper::defaultNameFilterDisables() const
{
    return false;
}
}

QT_END_NAMESPACE