#include <QRect>
#include <QRegularExpression>
#include <QScreen>
#include <QString>
#include <QTest>

class MainWindowPatternTest : public QObject
{
    Q_OBJECT

  private slots:
    void testPatternValidLettersThenDigits();
    void testPatternInvalidDigitsThenLetters();
    void testPatternInvalidSpecialCharacters();
    void testScreenGeometryExtraction();
    void testRegularExpressionContainsMethod();
};

void MainWindowPatternTest::testPatternValidLettersThenDigits()
{
    QRegularExpression pattern(R"(^[A-Za-z]+\d+$)");

    QVERIFY(pattern.match(QString::fromUtf8("Test123")).hasMatch());
    QVERIFY(pattern.match(QString::fromUtf8("ABC456")).hasMatch());
    QVERIFY(pattern.match(QString::fromUtf8("a1")).hasMatch());
}

void MainWindowPatternTest::testPatternInvalidDigitsThenLetters()
{
    QRegularExpression pattern(R"(^[A-Za-z]+\d+$)");

    QVERIFY(!pattern.match(QString::fromUtf8("123Test")).hasMatch());
    QVERIFY(!pattern.match(QString::fromUtf8("1a")).hasMatch());
}

void MainWindowPatternTest::testPatternInvalidSpecialCharacters()
{
    QRegularExpression pattern(R"(^[A-Za-z]+\d+$)");

    QVERIFY(!pattern.match(QString::fromUtf8("Test@123")).hasMatch());
    QVERIFY(!pattern.match(QString::fromUtf8("Test_123")).hasMatch());
    QVERIFY(!pattern.match(QString::fromUtf8("")).hasMatch());
}

void MainWindowPatternTest::testScreenGeometryExtraction()
{
    const QScreen* screen = QGuiApplication::primaryScreen();
    if (screen)
    {
        const QRect geometry = screen->geometry();
        QVERIFY(geometry.width() > 0);
        QVERIFY(geometry.height() > 0);

        const QString info = QString::fromUtf8("Screen: %1x%2").arg(geometry.width()).arg(geometry.height());
        QVERIFY(!info.isEmpty());
        QVERIFY(info.contains(QString::fromUtf8("Screen:")));
    }
}

void MainWindowPatternTest::testRegularExpressionContainsMethod()
{
    QRegularExpression pattern(R"(^[A-Za-z]+\d+$)");

    const QString validInput = QString::fromUtf8("Test123");
    const QRegularExpressionMatch match = pattern.match(validInput);
    QVERIFY(match.hasMatch());

    const QString invalidInput = QString::fromUtf8("Invalid");
    const QRegularExpressionMatch noMatch = pattern.match(invalidInput);
    QVERIFY(!noMatch.hasMatch());
}

QTEST_MAIN(MainWindowPatternTest)

#include "MainWindow_test.moc"