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#include <qtest.h>
#include <QtTest/QtTest>
#include <private/qdeclarativepixmapcache_p.h>
#include <QtDeclarative/qdeclarativeengine.h>
#include <QNetworkReply>
#include "testhttpserver.h"
#include "../../../shared/util.h"

// These don't let normal people run tests!
//#include "../network-settings.h"

#ifdef Q_OS_SYMBIAN
// In Symbian OS test data is located in applications private dir
#define SRCDIR "."
#endif

class tst_qdeclarativepixmapcache : public QObject
{
    Q_OBJECT
public:
    tst_qdeclarativepixmapcache() :
        thisfile(QUrl::fromLocalFile(__FILE__)),
        server(14452)
    {
        server.serveDirectory(SRCDIR "/data/http");
    }

private slots:
    void single();
    void single_data();
    void parallel();
    void parallel_data();

private:
    QDeclarativeEngine engine;
    QUrl thisfile;
    TestHTTPServer server;
};


static int slotters=0;

class Slotter : public QObject
{
    Q_OBJECT
public:
    Slotter()
    {
        gotslot = false;
        slotters++;
    }
    bool gotslot;

public slots:
    void got()
    {
        gotslot = true;
        --slotters;
        if (slotters==0)
            QTestEventLoop::instance().exitLoop();
    }
};

#ifndef QT_NO_LOCALFILE_OPTIMIZED_QML
static const bool localfile_optimized = true;
#else
static const bool localfile_optimized = false;
#endif

void tst_qdeclarativepixmapcache::single_data()
{
    // Note, since QDeclarativePixmapCache is shared, tests affect each other!
    // so use different files fore all test functions.

    QTest::addColumn<QUrl>("target");
    QTest::addColumn<bool>("incache");
    QTest::addColumn<bool>("exists");
    QTest::addColumn<bool>("neterror");

    // File URLs are optimized
    QTest::newRow("local") << thisfile.resolved(QUrl("data/exists.png")) << localfile_optimized << true << false;
    QTest::newRow("local") << thisfile.resolved(QUrl("data/notexists.png")) << localfile_optimized << false << false;
    QTest::newRow("remote") << QUrl("http://127.0.0.1:14452/exists.png") << false << true << false;
    QTest::newRow("remote") << QUrl("http://127.0.0.1:14452/notexists.png") << false << false << true;
}

void tst_qdeclarativepixmapcache::single()
{
    QFETCH(QUrl, target);
    QFETCH(bool, incache);
    QFETCH(bool, exists);
    QFETCH(bool, neterror);

    QString expectedError;
    if (neterror) {
        expectedError = "Error downloading " + target.toString() + " - server replied: Not found";
    } else if (!exists) {
        expectedError = "Cannot open: " + target.toString();
    }

    QPixmap pixmap;
    QVERIFY(pixmap.width() <= 0); // Check Qt assumption
    QString errorString;
    QDeclarativePixmapReply::Status status = QDeclarativePixmapCache::get(target, &pixmap, &errorString);

    if (incache) {
        QCOMPARE(errorString, expectedError);
        if (exists) {
            QVERIFY(status == QDeclarativePixmapReply::Ready);
            QVERIFY(pixmap.width() > 0);
        } else {
            QVERIFY(status == QDeclarativePixmapReply::Error);
            QVERIFY(pixmap.width() <= 0);
        }
    } else {
        QDeclarativePixmapReply *reply = QDeclarativePixmapCache::request(&engine, target);
        QVERIFY(reply);
        QVERIFY(pixmap.width() <= 0);

        Slotter getter;
        connect(reply, SIGNAL(finished()), &getter, SLOT(got()));
        QTestEventLoop::instance().enterLoop(10);
        QVERIFY(!QTestEventLoop::instance().timeout());
        QVERIFY(getter.gotslot);
        QString errorString;
        if (exists) {
            QVERIFY(QDeclarativePixmapCache::get(target, &pixmap, &errorString) == QDeclarativePixmapReply::Ready);
            QVERIFY(pixmap.width() > 0);
        } else {
            QVERIFY(QDeclarativePixmapCache::get(target, &pixmap, &errorString) == QDeclarativePixmapReply::Error);
            QVERIFY(pixmap.width() <= 0);
        }
        QCOMPARE(errorString, expectedError);
    }

    QCOMPARE(QDeclarativePixmapCache::pendingRequests(), 0);
}

void tst_qdeclarativepixmapcache::parallel_data()
{
    // Note, since QDeclarativePixmapCache is shared, tests affect each other!
    // so use different files fore all test functions.

    QTest::addColumn<QUrl>("target1");
    QTest::addColumn<QUrl>("target2");
    QTest::addColumn<int>("incache");
    QTest::addColumn<int>("cancel"); // which one to cancel
    QTest::addColumn<int>("requests");

    QTest::newRow("local")
            << thisfile.resolved(QUrl("data/exists1.png"))
            << thisfile.resolved(QUrl("data/exists2.png"))
            << (localfile_optimized ? 2 : 0)
            << -1
            << (localfile_optimized ? 0 : 2)
            ;

    QTest::newRow("remote")
            << QUrl("http://127.0.0.1:14452/exists2.png")
            << QUrl("http://127.0.0.1:14452/exists3.png")
            << 0
            << -1
            << 2
            ;

    QTest::newRow("remoteagain")
            << QUrl("http://127.0.0.1:14452/exists2.png")
            << QUrl("http://127.0.0.1:14452/exists3.png")
            << 2
            << -1
            << 0
            ;

    QTest::newRow("remotecopy")
            << QUrl("http://127.0.0.1:14452/exists4.png")
            << QUrl("http://127.0.0.1:14452/exists4.png")
            << 0
            << -1
            << 1
            ;

    QTest::newRow("remotecopycancel")
            << QUrl("http://127.0.0.1:14452/exists5.png")
            << QUrl("http://127.0.0.1:14452/exists5.png")
            << 0
            << 0
            << 1
            ;
}

void tst_qdeclarativepixmapcache::parallel()
{
    QFETCH(QUrl, target1);
    QFETCH(QUrl, target2);
    QFETCH(int, incache);
    QFETCH(int, cancel);
    QFETCH(int, requests);

    QList<QUrl> targets;
    targets << target1 << target2;

    QList<QDeclarativePixmapReply*> replies;
    QList<Slotter*> getters;
    for (int i=0; i<targets.count(); ++i) {
        QUrl target = targets.at(i);
        QPixmap pixmap;
        QString errorString;
        QDeclarativePixmapReply::Status status = QDeclarativePixmapCache::get(target, &pixmap, &errorString);
        QDeclarativePixmapReply *reply = 0;
        QVERIFY(status != QDeclarativePixmapReply::Error);
        if (status != QDeclarativePixmapReply::Error && status != QDeclarativePixmapReply::Ready)
            reply = QDeclarativePixmapCache::request(&engine, target);
        replies.append(reply);
        if (!reply) {
            QVERIFY(pixmap.width() > 0);
            getters.append(0);
        } else {
            QVERIFY(pixmap.width() <= 0);
            getters.append(new Slotter);
            connect(reply, SIGNAL(finished()), getters[i], SLOT(got()));
        }
    }

    QCOMPARE(incache+slotters, targets.count());
    QCOMPARE(QDeclarativePixmapCache::pendingRequests(), requests);

    if (cancel >= 0) {
        QDeclarativePixmapCache::cancel(targets.at(cancel), getters[cancel]);
        slotters--;
    }

    if (slotters) {
        QTestEventLoop::instance().enterLoop(10);
        QVERIFY(!QTestEventLoop::instance().timeout());
    }

    for (int i=0; i<targets.count(); ++i) {
        QDeclarativePixmapReply *reply = replies[i];
        if (reply) {
            if (i == cancel) {
                QVERIFY(!getters[i]->gotslot);
            } else {
                QVERIFY(getters[i]->gotslot);
                QPixmap pixmap;
                QString errorString;
                QVERIFY(QDeclarativePixmapCache::get(targets[i], &pixmap, &errorString) == QDeclarativePixmapReply::Ready);
                QVERIFY(pixmap.width() > 0);
            }
            delete getters[i];
        }
    }

    QCOMPARE(QDeclarativePixmapCache::pendingRequests(), 0);
}

QTEST_MAIN(tst_qdeclarativepixmapcache)

#include "tst_qdeclarativepixmapcache.moc"