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#include "jsfilewizard.h"

#include <qmljstools/qmljstoolsconstants.h>

#include <coreplugin/basefilewizard.h>

#include <utils/filewizardpage.h>
#include <utils/qtcassert.h>

#include <QFileInfo>
#include <QTextStream>
#include <QWizard>
#include <QPushButton>
#include <QBoxLayout>
#include <QCheckBox>

namespace {
class JsFileOptionsPage : public QWizardPage
{
    Q_OBJECT
public:
    JsFileOptionsPage()
    {
        setTitle(tr("Options"));

        QVBoxLayout *layout = new QVBoxLayout;
        m_statelessLibrary = new QCheckBox(tr("Stateless library"));
        m_statelessLibrary->setToolTip(
                    tr("Usually each QML component instance has a unique copy of\n"
                       "imported JavaScript libraries. Indicating that a library is\n"
                       "stateless means that a single instance will be shared among\n"
                       "all components. Stateless libraries will not be able to access\n"
                       "QML component instance objects and properties directly."));
        layout->addWidget(m_statelessLibrary);
        setLayout(layout);
    }

    bool statelessLibrary() const
    {
        return m_statelessLibrary->isChecked();
    }

private:
    QCheckBox *m_statelessLibrary;
};

class JsFileWizardDialog : public Core::BaseFileWizard
{
    Q_OBJECT
public:
    JsFileWizardDialog(QWidget *parent = 0) :
        Core::BaseFileWizard(parent)
    {
        addPage(new Utils::FileWizardPage);
        addPage(new JsFileOptionsPage);
    }
};
} // anonymous namespace

using namespace QmlJSEditor;

JsFileWizard::JsFileWizard()
{
}

Core::GeneratedFiles JsFileWizard::generateFiles(const QWizard *w,
                                                 QString * /*errorMessage*/) const
{
    const Core::BaseFileWizard *wizard = qobject_cast<const Core::BaseFileWizard *>(w);
    Utils::FileWizardPage *filePage = wizard->find<Utils::FileWizardPage>();
    QTC_ASSERT(filePage, Core::GeneratedFiles());
    JsFileOptionsPage *optionPage = wizard->find<JsFileOptionsPage>();
    QTC_ASSERT(optionPage, Core::GeneratedFiles());


    const QString path = filePage->path();
    const QString name = filePage->fileName();

    const QString mimeType = QLatin1String(QmlJSTools::Constants::JS_MIMETYPE);
    const QString fileName = Core::BaseFileWizardFactory::buildFileName(path, name, preferredSuffix(mimeType));

    Core::GeneratedFile file(fileName);
    file.setContents(fileContents(fileName, optionPage->statelessLibrary()));
    file.setAttributes(Core::GeneratedFile::OpenEditorAttribute);
    return Core::GeneratedFiles() << file;
}

QString JsFileWizard::fileContents(const QString &, bool statelessLibrary) const
{
    QString contents;
    QTextStream str(&contents);

    if (statelessLibrary)
        str << QLatin1String(".pragma library\n\n");
    str << QLatin1String("function func() {\n")
        << QLatin1String("\n")
        << QLatin1String("}\n");

    return contents;
}

Core::BaseFileWizard *JsFileWizard::create(QWidget *parent, const Core::WizardDialogParameters &parameters) const
{
    JsFileWizardDialog *wizard = new JsFileWizardDialog(parent);
    wizard->setWindowTitle(tr("New %1").arg(displayName()));

    Utils::FileWizardPage *page = wizard->find<Utils::FileWizardPage>();
    page->setPath(parameters.defaultPath());

    foreach (QWizardPage *p, parameters.extensionPages())
        wizard->addPage(p);
    return wizard;
}

#include "jsfilewizard.moc"