// Copyright (C) 2022 The Qt Company Ltd.
// Copyright (C) 2016 Alex Char.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

#include <QtTest/QtTest>
#include <QtGui/QtGui>

class tst_qicns: public QObject
{
    Q_OBJECT

private slots:
    void initTestCase();
    void readIcons_data();
    void readIcons();
    void writeIcons_data();
    void writeIcons();
    void ossFuzz_data();
    void ossFuzz();
};

void tst_qicns::initTestCase()
{
    if (!QImageReader::supportedImageFormats().contains("icns"))
        QSKIP("The image format handler is not installed.");
}

void tst_qicns::readIcons_data()
{
    QTest::addColumn<QString>("fileName");
    QTest::addColumn<QSize>("size");
    QTest::addColumn<int>("imageCount");
    QTest::addColumn<QByteArray>("format");

    QTest::newRow("1") << QStringLiteral("test-png") << QSize(128, 128) << 7 << QByteArrayLiteral("png");
    QTest::newRow("2") << QStringLiteral("test-jp2") << QSize(128, 128) << 7 << QByteArrayLiteral("jp2");
    QTest::newRow("3") << QStringLiteral("test-32bit") << QSize(128, 128) << 4 << QByteArray();
    QTest::newRow("4") << QStringLiteral("test-legacy") << QSize(48, 48) << 12 << QByteArray();
    QTest::newRow("5") << QStringLiteral("test-variants") << QSize(128, 128) << 5 << QByteArrayLiteral("png");
}

void tst_qicns::readIcons()
{
    QFETCH(QString, fileName);
    QFETCH(QSize, size);
    QFETCH(int, imageCount);
    QFETCH(QByteArray, format);

    if (!format.isEmpty() && !QImageReader::supportedImageFormats().contains(format))
        QSKIP("This test requires another image format plugin");
    const QString path = QStringLiteral(":/icns/") + fileName + QStringLiteral(".icns");
    QImageReader reader(path);
    QVERIFY(reader.canRead());
    QCOMPARE(reader.imageCount(), imageCount);

    for (int i = 0; i < reader.imageCount(); ++i) {
        QVERIFY2(reader.jumpToImage(i), qPrintable(reader.errorString()));
        QImage image = reader.read();
        if (i == 0)
            QCOMPARE(image.size(), size);
        QVERIFY2(!image.isNull(), qPrintable(reader.errorString()));
    }
}

void tst_qicns::writeIcons_data()
{
    QTest::addColumn<QString>("fileName");
    QTest::addColumn<QSize>("size");

    QTest::newRow("1") << QStringLiteral("test-write-16") << QSize(16, 16);
    QTest::newRow("2") << QStringLiteral("test-write-32") << QSize(32, 32);
    QTest::newRow("3") << QStringLiteral("test-write-64") << QSize(64, 64);
    QTest::newRow("4") << QStringLiteral("test-write-128") << QSize(128, 128);
    QTest::newRow("5") << QStringLiteral("test-write-512") << QSize(512, 512);
    QTest::newRow("6") << QStringLiteral("test-write-1024") << QSize(1024, 1024);
}

void tst_qicns::writeIcons()
{
#ifdef Q_OS_INTEGRITY
    QSKIP("Unable to create temp dir on INTEGRITY device.");
#endif
    QTemporaryDir temp(QDir::tempPath() + QStringLiteral("/tst_qincs"));
    QVERIFY2(temp.isValid(), "Unable to create temp dir.");

    QFETCH(QString, fileName);
    QFETCH(QSize, size);

    const QString distPath = QStringLiteral("%1/%2.icns").arg(temp.path()).arg(fileName);
    const QString sourcePath = QStringLiteral(":/icns/%1.png").arg(fileName);

    QImage image(sourcePath);
    QVERIFY(!image.isNull());
    QVERIFY(image.size() == size);

    QImageWriter writer(distPath, QByteArrayLiteral("icns"));
    QVERIFY2(writer.canWrite(), qPrintable(writer.errorString()));
    QVERIFY2(writer.write(image), qPrintable(writer.errorString()));

    QVERIFY(image == QImage(distPath));
}

void tst_qicns::ossFuzz_data()
{
    QTest::addColumn<QByteArray>("data");
    QTest::addColumn<QByteArrayList>("ignoredMessages");
    QTest::newRow("47415") << QByteArray::fromRawData("icns\0\0\0\0", 8)
                           << QByteArrayList({"QICNSHandler::scanDevice(): Failed, bad header at "
                                              "pos 8. OSType \"icns\", length 0",
                                              "QICNSHandler::read(): The device wasn't parsed "
                                              "properly!"});
}

void tst_qicns::ossFuzz()
{
    QFETCH(QByteArray, data);
    QFETCH(QByteArrayList, ignoredMessages);
    for (auto msg: ignoredMessages)
        QTest::ignoreMessage(QtWarningMsg, msg.data());
    QImage().loadFromData(data);
}

QTEST_MAIN(tst_qicns)
#include "tst_qicns.moc"