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#include "../../widgets/util.h"
#include <QtTest/QtTest>
#include <QtWebEngineCore/qwebengineurlrequestinterceptor.h>
#include <QtWebEngineWidgets/qwebenginepage.h>
#include <QtWebEngineWidgets/qwebengineprofile.h>
#include <QtWebEngineWidgets/qwebengineview.h>

class tst_QWebEngineUrlRequestInterceptor : public QObject
{
    Q_OBJECT

public:
    tst_QWebEngineUrlRequestInterceptor();
    ~tst_QWebEngineUrlRequestInterceptor();

public Q_SLOTS:
    void init();
    void cleanup();

private Q_SLOTS:
    void initTestCase();
    void cleanupTestCase();
    void interceptRequest();
};

tst_QWebEngineUrlRequestInterceptor::tst_QWebEngineUrlRequestInterceptor()
{
}

tst_QWebEngineUrlRequestInterceptor::~tst_QWebEngineUrlRequestInterceptor()
{
}

void tst_QWebEngineUrlRequestInterceptor::init()
{
}

void tst_QWebEngineUrlRequestInterceptor::cleanup()
{
}

void tst_QWebEngineUrlRequestInterceptor::initTestCase()
{
}

void tst_QWebEngineUrlRequestInterceptor::cleanupTestCase()
{
}

class TestRequestInterceptor: public QWebEngineUrlRequestInterceptor
{
public:
    QList<QUrl> observedUrls;
    bool shouldIntercept;

    bool interceptRequest(QWebEngineUrlRequestInfo &info) override
    {
        info.blockRequest(info.method() != QByteArrayLiteral("GET"));
        if (info.url().toString().endsWith(QLatin1String("__placeholder__")))
            info.redirectTo(QUrl("qrc:///resources/content.html"));

        observedUrls.append(info.url());
        return shouldIntercept;
    }
    TestRequestInterceptor(bool intercept)
        : shouldIntercept(intercept)
    {
    }
};

void tst_QWebEngineUrlRequestInterceptor::interceptRequest()
{
    QWebEngineView view;
    TestRequestInterceptor interceptor(/* intercept */ true);

    QSignalSpy loadSpy(&view, SIGNAL(loadFinished(bool)));
    view.page()->profile()->setRequestInterceptor(&interceptor);
    view.load(QUrl("qrc:///resources/index.html"));
    QTRY_COMPARE(loadSpy.count(), 1);
    QVariant success = loadSpy.takeFirst().takeFirst();
    QVERIFY(success.toBool());
    loadSpy.clear();
    QVariant ok;

    view.page()->runJavaScript("post();", [&ok](const QVariant result){ ok = result; });
    QTRY_VERIFY(ok.toBool());
    QTRY_COMPARE(loadSpy.count(), 1);
    success = loadSpy.takeFirst().takeFirst();
    // We block non-GET requests, so this should not succeed.
    QVERIFY(!success.toBool());
    loadSpy.clear();

    view.load(QUrl("qrc:///resources/__placeholder__"));
    QTRY_COMPARE(loadSpy.count(), 1);
    success = loadSpy.takeFirst().takeFirst();
    // The redirection for __placeholder__ should succeed.
    QVERIFY(success.toBool());
    loadSpy.clear();
    QCOMPARE(interceptor.observedUrls.count(), 4);


    // Make sure that registering an observer does not modify the request.
    TestRequestInterceptor observer(/* intercept */ false);
    view.page()->profile()->setRequestInterceptor(&observer);
    view.load(QUrl("qrc:///resources/__placeholder__"));
    QTRY_COMPARE(loadSpy.count(), 1);
    success = loadSpy.takeFirst().takeFirst();
    // Since we do not intercept, loading an invalid path should not succeed.
    QVERIFY(!success.toBool());
    QCOMPARE(observer.observedUrls.count(), 1);
}

QTEST_MAIN(tst_QWebEngineUrlRequestInterceptor)
#include "tst_qwebengineurlrequestinterceptor.moc"