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#include <QBuffer>

#include <QUrl>

#include <QXmlAttributes>

#include <QXmlQuery>

#include <QXmlResultItems>

#include <QXmlSerializer>

#include <qxmlquery_p.h>

#include "DebugExpressionFactory.h"

#include "ExternalSourceLoader.h"

#include "Global.h"

#include "TestSuite.h"

#include "XMLWriter.h"

#include "TestCase.h"

using namespace QPatternistSDK;

using namespace QPatternist;

// STATIC DATA

static const DebugExpressionFactory::Ptr s_exprFact(new DebugExpressionFactory());

TestCase::TestCase() : m_result(0)

{

}

TestCase::~TestCase()

{

    delete m_result;

}

TestResult::List TestCase::execute(const ExecutionStage stage,

                                   TestSuite *)

{

    if(name() == QLatin1String("Constr-cont-document-3"))

    {

            TestResult::List result;

            result.append(createTestResult(TestResult::Fail, QLatin1String("Skipped this test, because we loop infinitely on it.")));

            return result;

    }

    else if(name() == QLatin1String("Axes089"))

    {

            TestResult::List result;

            result.append(createTestResult(TestResult::Fail, QLatin1String("Skipped this test, we crash on it.")));

            return result;

    }

    qDebug() << "Running test case: " << name();

    return execute(stage);

    Q_ASSERT(false);

    return TestResult::List();

}

TestResult *TestCase::createTestResult(const TestResult::Status status,

                                             const QString &comment) const

{

    TestResult *const result = new TestResult(name(),

                                              status,

                                              0 /* We don't have an AST. */,

                                              ErrorHandler::Message::List(),

                                              QPatternist::Item::List(),

                                              QString());

    result->setComment(comment);

    return result;

}

TestResult::List TestCase::execute(const ExecutionStage stage)

{

    ErrorHandler errHandler;

    ErrorHandler::installQtMessageHandler(&errHandler);

    pDebug() << "TestCase::execute()";

    delete m_result;

    QXmlQuery query(language(), Global::namePoolAsPublic());

    query.d->setExpressionFactory(s_exprFact);

    query.setInitialTemplateName(initialTemplateName());

    QXmlQuery openDoc(query.namePool());

    if(contextItemSource().isValid())

    {

        openDoc.setQuery(QString::fromLatin1("doc('") + contextItemSource().toString() + QLatin1String("')"));

        Q_ASSERT(openDoc.isValid());

        QXmlResultItems result;

        openDoc.evaluateTo(&result);

        const QXmlItem item(result.next());

        Q_ASSERT(!item.isNull());

        query.setFocus(item);

    }

    TestResult::List retval;

    const Scenario scen(scenario());

    TestResult::Status resultStatus = TestResult::Unknown;

    bool ok = false;

    const QString queryString(sourceCode(ok));

    if(!ok)

    {

        /* Loading the query file failed, or similar. */

        resultStatus = TestResult::Fail;

        m_result = new TestResult(name(), resultStatus, s_exprFact->astTree(),

                                  errHandler.messages(), QPatternist::Item::List(), QString());

        retval.append(m_result);

        ErrorHandler::installQtMessageHandler(0);

        changed(this);

        return retval;

    }

    query.setMessageHandler(&errHandler);

    QXmlNamePool namePool(query.namePool());

    /* Bind variables. */

    QPatternist::ExternalVariableLoader::Ptr loader(externalVariableLoader());

    if(loader)

    {

        Q_ASSERT(loader);

        const ExternalSourceLoader::VariableMap vMap(static_cast<const ExternalSourceLoader *>(loader.data())->variableMap());

        const QStringList variables(vMap.keys());

        for(int i = 0; i < variables.count(); ++i)

        {

            const QXmlName name(namePool, variables.at(i));

            const QXmlItem val(QPatternist::Item::toPublic(loader->evaluateSingleton(name, QPatternist::DynamicContext::Ptr())));

            query.bindVariable(name, val);

        }

    }

    /* We pass in the testCasePath(), such that the base URI is correct fort

     * XSL-T stylesheets. */

    query.setQuery(queryString, testCasePath());

    if(!query.isValid())

    {

        pDebug() << "Got compilation exception.";

        resultStatus = TestBaseLine::scanErrors(errHandler.messages(), baseLines());

        Q_ASSERT(resultStatus != TestResult::Unknown);

        m_result = new TestResult(name(), resultStatus, s_exprFact->astTree(),

                                  errHandler.messages(), QPatternist::Item::List(), QString());

        retval.append(m_result);

        ErrorHandler::installQtMessageHandler(0);

        changed(this);

        return retval;

    }

    if(stage == CompileOnly)

    {

        m_result = new TestResult(name(), TestResult::Fail, s_exprFact->astTree(),

                                  errHandler.messages(), QPatternist::Item::List(), QString());

        retval.append(m_result);

        return retval;

    }

    Q_ASSERT(stage == CompileAndRun);

    if(scen == ParseError) /* We're supposed to have received an error

                              at this point. */

    {

        m_result = new TestResult(name(), TestResult::Fail, s_exprFact->astTree(),

                                  errHandler.messages(), QPatternist::Item::List(), QString());

        ErrorHandler::installQtMessageHandler(0);

        retval.append(m_result);

        changed(this);

        return retval;

    }

    QPatternist::Item::List itemList;

    QByteArray output;

    QBuffer buffer(&output);

    buffer.open(QIODevice::WriteOnly);

    QXmlSerializer serializer(query, &buffer);

    pDebug() << "-------------------------- evaluateToPushCallback() ---------------------------- ";

    const bool success = query.evaluateTo(&serializer);

    pDebug() << "------------------------------------------------------------------------------------ ";

    buffer.close();

    const QString serialized(QString::fromUtf8(output.constData(), output.size()));

    if(!success)

    {

        resultStatus = TestBaseLine::scanErrors(errHandler.messages(), baseLines());

        Q_ASSERT(resultStatus != TestResult::Unknown);

        m_result = new TestResult(name(), resultStatus, s_exprFact->astTree(),

                                  errHandler.messages(), QPatternist::Item::List(), serialized);

        retval.append(m_result);

        ErrorHandler::installQtMessageHandler(0);

        changed(this);

        return retval;

    }

    /* It's a regular test. */

    Q_ASSERT(scen == Standard || scen == RuntimeError);

    resultStatus = TestBaseLine::scan(serialized, baseLines());

    Q_ASSERT(resultStatus != TestResult::Unknown);

    /* Check that errHandler()->messages() at most only contains

     * warnings, since it shouldn't have errors at this point. */

    const ErrorHandler::Message::List errors (errHandler.messages());

    const ErrorHandler::Message::List::const_iterator end(errors.constEnd());

    ErrorHandler::Message::List::const_iterator it(errors.constBegin());

    for(; it != end; ++it)

    {

        const QtMsgType type = (*it).type();

        if(type == QtFatalMsg)

        {

            m_result = new TestResult(name(), TestResult::Fail, s_exprFact->astTree(),

                                      errHandler.messages(), itemList, serialized);

            retval.append(m_result);

            ErrorHandler::installQtMessageHandler(0);

            changed(this);

            return retval;

        }

    }

    m_result = new TestResult(name(), resultStatus, s_exprFact->astTree(),

                              errHandler.messages(), itemList, serialized);

    retval.append(m_result);

    ErrorHandler::installQtMessageHandler(0);

    changed(this);

    return retval;

}

TestCase::Scenario TestCase::scenarioFromString(const QString &string)

{

    if(string == QLatin1String("standard"))

        return Standard;

    else if(string == QLatin1String("parse-error"))

        return ParseError;

    else if(string == QLatin1String("runtime-error"))

        return RuntimeError;

    else if(string == QLatin1String("trivial"))

        return Trivial;

    else

    {

        Q_ASSERT_X(false, Q_FUNC_INFO,

                   qPrintable(QString::fromLatin1("Invalid string representation for the scenario-enum: %1").arg(string)));

        return ParseError; /* Silence GCC. */

    }

}

void TestCase::toXML(XMLWriter &receiver) const

{

    /* <test-case> */

    QXmlAttributes test_caseAtts;

    test_caseAtts.append(QLatin1String("is-XPath2"), QString(),

                         QLatin1String("is-XPath2"), isXPath() ? QLatin1String("true")

                                                               : QLatin1String("false"));

    test_caseAtts.append(QLatin1String("name"), QString(), QLatin1String("name"), name());

    test_caseAtts.append(QLatin1String("creator"), QString(), QLatin1String("creator"), creator());

    QString scen;

    switch(scenario())

    {

        case Standard:

        {

            scen = QLatin1String("standard");

            break;

        }

        case ParseError:

        {

            scen = QLatin1String("parse-error");

            break;

        }

        case RuntimeError:

        {

            scen = QLatin1String("runtime-error");

            break;

        }

        case Trivial:

        {

            scen = QLatin1String("trivial");

            break;

        }

        default: /* includes 'AnyError' */

            Q_ASSERT(false);

    }

    test_caseAtts.append(QLatin1String("scenario"), QString(), QLatin1String("scenario"), scen);

    test_caseAtts.append(QLatin1String(QLatin1String("FilePath")), QString(),

                         QLatin1String("FilePath"), QString());

    receiver.startElement(QLatin1String("test-case"), test_caseAtts);

    /* <description> */

    receiver.startElement(QLatin1String("description"), test_caseAtts);

    receiver.characters(description());

    /* </description> */

    receiver.endElement(QLatin1String("description"));

    /* <query> */

    QXmlAttributes queryAtts;

    queryAtts.append(QLatin1String("date"), QString(), QLatin1String("date"), /* This date is a dummy. */

                     QDate::currentDate().toString(Qt::ISODate));

    queryAtts.append(QLatin1String("name"), QString(), QLatin1String("name"), testCasePath().toString());

    receiver.startElement(QLatin1String("query"), queryAtts);

    /* </query> */

    receiver.endElement(QLatin1String("query"));

    /* Note: this is invalid, we don't add spec-citation. */

    TestBaseLine::List bls(baseLines());

    const TestBaseLine::List::const_iterator end(bls.constEnd());

    TestBaseLine::List::const_iterator it(bls.constBegin());

    for(; it != end; ++it)

        (*it)->toXML(receiver);

    /* </test-case> */

    receiver.endElement(QLatin1String("test-case"));

}

QString TestCase::displayName(const Scenario scen)

{

    switch(scen)

    {

        case Standard:

            return QLatin1String("Standard");

        case ParseError:

            return QLatin1String("Parse Error");

        case RuntimeError:

            return QLatin1String("Runtime Error");

        case Trivial:

            return QLatin1String("Trivial");

        case AnyError:

        {

            Q_ASSERT(false);

            return QString();

        }

    }

    Q_ASSERT(false);

    return QString();

}

TestItem::ResultSummary TestCase::resultSummary() const

{

    if(m_result)

        return ResultSummary(m_result->status() == TestResult::Pass ? 1 : 0,

                             1);

    return ResultSummary(0, 1);

}

void TestCase::appendChild(TreeItem *)

{

    Q_ASSERT_X(false, Q_FUNC_INFO, "Makes no sense to call appendChild() for TestCase.");

}

TreeItem *TestCase::child(const unsigned int) const

{

    return 0; /* Silence GCC */

}

TreeItem::List TestCase::children() const

{

    return TreeItem::List();

}

unsigned int TestCase::childCount() const

{

    return 0;

}

TestResult *TestCase::testResult() const

{

    return m_result;

}

bool TestCase::isFinalNode() const

{

    return true;

}

QXmlQuery::QueryLanguage TestCase::language() const

{

    return QXmlQuery::XQuery10;

}

QXmlName TestCase::initialTemplateName() const

{

    return QXmlName();

}

// vim: et:ts=4:sw=4:sts=4