/**************************************************************************
**
** This file is part of Qt Creator
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** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
**
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** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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#include "settingspage.h"
#include "gitsettings.h"
#include "gitplugin.h"
#include "gitclient.h"

#include <vcsbase/vcsbaseconstants.h>

#include <QtCore/QCoreApplication>
#include <QtCore/QFileInfo>
#include <QtCore/QDebug>
#include <QtCore/QTextStream>
#include <QtCore/QProcessEnvironment>
#include <QtGui/QMessageBox>

namespace Git {
namespace Internal {

SettingsPageWidget::SettingsPageWidget(QWidget *parent) :
    QWidget(parent)
{
    m_ui.setupUi(this);
    connect(m_ui.adoptButton, SIGNAL(clicked()), this, SLOT(setSystemPath()));
#ifdef Q_OS_WIN
    const QByteArray currentHome = qgetenv("HOME");
    const QString toolTip
            = tr("Set the environment variable HOME to '%1'\n(%2).\n"
                 "This causes msysgit to look for the SSH-keys in that location\n"
                 "instead of its installation directory when run outside git bash.").
            arg(GitClient::fakeWinHome(QProcessEnvironment::systemEnvironment()),
                currentHome.isEmpty() ? tr("not currently set") :
                                        tr("currently set to '%1'").arg(QString::fromLocal8Bit(currentHome)));
    m_ui.winHomeCheckBox->setToolTip(toolTip);
#else
    m_ui.winHomeCheckBox->setVisible(false);
#endif
}

GitSettings SettingsPageWidget::settings() const
{
    GitSettings rc;
    rc.path = m_ui.pathLineEdit->text();
    rc.adoptPath = m_ui.environmentGroupBox->isChecked() && !rc.path.isEmpty();
    rc.logCount = m_ui.logCountSpinBox->value();
    rc.timeoutSeconds = m_ui.timeoutSpinBox->value();
    rc.pullRebase = m_ui.pullRebaseCheckBox->isChecked();
    rc.promptToSubmit = m_ui.promptToSubmitCheckBox->isChecked();
    rc.winSetHomeEnvironment = m_ui.winHomeCheckBox->isChecked();
    rc.gitkOptions = m_ui.gitkOptionsLineEdit->text().trimmed();
    return rc;
}

void SettingsPageWidget::setSettings(const GitSettings &s)
{
    m_ui.environmentGroupBox->setChecked(s.adoptPath);
    m_ui.pathLineEdit->setText(s.path);
    m_ui.logCountSpinBox->setValue(s.logCount);
    m_ui.timeoutSpinBox->setValue(s.timeoutSeconds);
    m_ui.pullRebaseCheckBox->setChecked(s.pullRebase);
    m_ui.promptToSubmitCheckBox->setChecked(s.promptToSubmit);
    m_ui.winHomeCheckBox->setChecked(s.winSetHomeEnvironment);
    m_ui.gitkOptionsLineEdit->setText(s.gitkOptions);
}

void SettingsPageWidget::setSystemPath()
{
    m_ui.pathLineEdit->setText(QLatin1String(qgetenv("PATH")));
}

QString SettingsPageWidget::searchKeywords() const
{
    QString rc;
    QLatin1Char sep(' ');
    QTextStream(&rc)
            << sep << m_ui.environmentGroupBox->title()
            << sep << m_ui.pathlabel->text()
            << sep << m_ui.winHomeCheckBox->text()
            << sep << m_ui.groupBox->title()
            << sep << m_ui.logCountLabel->text()
            << sep << m_ui.timeoutLabel->text()
            << sep << m_ui.promptToSubmitCheckBox->text()
            << sep << m_ui.promptToSubmitCheckBox->text()
            << sep << m_ui.gitkGroupBox->title()
            << sep << m_ui.gitkOptionsLabel->text()
               ;
    rc.remove(QLatin1Char('&'));
    return rc;
}

// -------- SettingsPage
SettingsPage::SettingsPage() :
    m_widget(0)
{
}

QString SettingsPage::id() const
{
    return QLatin1String(VCSBase::Constants::VCS_ID_GIT);
}

QString SettingsPage::displayName() const
{
    return tr("Git");
}

QWidget *SettingsPage::createPage(QWidget *parent)
{
    m_widget = new SettingsPageWidget(parent);
    m_widget->setSettings(GitPlugin::instance()->settings());
    if (m_searchKeywords.isEmpty())
        m_searchKeywords = m_widget->searchKeywords();
    return m_widget;
}

void SettingsPage::apply()
{
    const GitSettings newSettings = m_widget->settings();
    // Warn if git cannot be found in path if the widget is on top
    if (m_widget->isVisible()) {
        bool gitFoundOk;
        QString errorMessage;
        newSettings.gitBinaryPath(&gitFoundOk, &errorMessage);
        if (!gitFoundOk)
            QMessageBox::warning(m_widget, tr("Git Settings"), errorMessage);
    }

    GitPlugin::instance()->setSettings(newSettings);
}

bool SettingsPage::matches(const QString &s) const
{
    return m_searchKeywords.contains(s, Qt::CaseInsensitive);
}

}
}