#include "usersettings.hpp"

#include <QTextStream>
#include <QDir>
#include <QString>
#include <QRegExp>
#include <QMap>
#include <QMessageBox>
#include <QTextCodec>
#include <QSettings>

#include <QFile>
#include <QSortFilterProxyModel>

#include <components/files/configurationmanager.hpp>
#include <boost/version.hpp>

#include "setting.hpp"
#include "support.hpp"
#include <QDebug>

/**
 * Workaround for problems with whitespaces in paths in older versions of Boost library
 */
#if (BOOST_VERSION <= 104600)
namespace boost
{

    template<>
    inline boost::filesystem::path lexical_cast<boost::filesystem::path, std::string>(const std::string& arg)
    {
        return boost::filesystem::path(arg);
    }

} /* namespace boost */
#endif /* (BOOST_VERSION <= 104600) */

CSMSettings::UserSettings *CSMSettings::UserSettings::mUserSettingsInstance = 0;

CSMSettings::UserSettings::UserSettings()
{
    assert(!mUserSettingsInstance);
    mUserSettingsInstance = this;

    mSettings = 0;

    buildSettingModelDefaults();
}

void CSMSettings::UserSettings::buildSettingModelDefaults()
{
    QString section = "Window Size";
    {
        Setting *width = createSetting (Type_LineEdit, section, "Width");
        Setting *height = createSetting (Type_LineEdit, section, "Height");

        width->setWidgetWidth (5);
        height->setWidgetWidth (8);

        width->setDefaultValues (QStringList() << "1024");
        height->setDefaultValues (QStringList() << "768");

        width->setEditorSetting (true);
        height->setEditorSetting (true);

        height->setViewLocation (2,2);
        width->setViewLocation (2,1);

        /*
         *Create the proxy setting for predefined values
         */
        Setting *preDefined = createSetting (Type_ComboBox, section,
                                             "Pre-Defined");

        preDefined->setDeclaredValues (QStringList() << "640 x 480"
                                << "800 x 600" << "1024 x 768" << "1440 x 900");

        preDefined->setViewLocation (1, 1);
        preDefined->setWidgetWidth (10);
        preDefined->setColumnSpan (2);

        preDefined->addProxy (width,
                             QStringList() << "640" << "800" << "1024" << "1440"
                             );

        preDefined->addProxy (height,
                             QStringList() << "480" << "600" << "768" << "900"
                             );
    }

    section = "Display Format";
    {
        QString defaultValue = "Icon and Text";

        QStringList values = QStringList()
                            << defaultValue << "Icon Only" << "Text Only";

        Setting *rsd = createSetting (Type_RadioButton,
                                      section, "Record Status Display");

        Setting *ritd = createSetting (Type_RadioButton,
                                      section, "Referenceable ID Type Display");

        rsd->setDeclaredValues (values);
        ritd->setDeclaredValues (values);

        rsd->setEditorSetting (true);
        ritd->setEditorSetting (true);
    }

    section = "Proxy Selection Test";
    {
        /******************************************************************
        * There are three types of values:
        *
        * Declared values
        *
        *       Pre-determined values, typically for
        *       combobox drop downs and boolean (radiobutton / checkbox) labels.
        *       These values represent the total possible list of values that
        *       may define a setting.  No other values are allowed.
        *
        * Defined values
        *
        *       Values which represent the actual, current value of
        *       a setting.  For settings with declared values, this must be one or
        *       several declared values, as appropriate.
        *
        * Proxy values - values the proxy master updates the proxy slave when
        * it's own definition is set / changed.  These are definitions for
        * proxy slave settings, but must match any declared values the proxy
        * slave has, if any.
        *******************************************************************/

        //create setting objects, specifying the basic widget type,
        //the page name, and the view name
/*
        Setting *masterBoolean = createSetting (Type_RadioButton, section,
                                                "Master Proxy");

        Setting *slaveBoolean = createSetting (Type_CheckBox, section,
                                                "Proxy Checkboxes");

        Setting *slaveSingleText = createSetting (Type_LineEdit, section,
                                                "Proxy TextBox 1");

        Setting *slaveMultiText = createSetting (Type_LineEdit, section,
                                                "ProxyTextBox 2");

        Setting *slaveAlphaSpinbox = createSetting (Type_SpinBox, section,
                                                "Alpha Spinbox");

        Setting *slaveIntegerSpinbox = createSetting (Type_SpinBox, section,
                                                "Int Spinbox");

        Setting *slaveDoubleSpinbox = createSetting (Type_DoubleSpinBox,
                                                section, "Double Spinbox");

        Setting *slaveSlider = createSetting (Type_Slider, section, "Slider");

        Setting *slaveDial = createSetting (Type_Dial, section, "Dial");

        //set declared values for selected views
        masterBoolean->setDeclaredValues (QStringList()
                                        << "Profile One" << "Profile Two"
                                        << "Profile Three" << "Profile Four");

        slaveBoolean->setDeclaredValues (QStringList()
                            << "One" << "Two" << "Three" << "Four" << "Five");

        slaveAlphaSpinbox->setDeclaredValues (QStringList()
                            << "One" << "Two" << "Three" << "Four");


        masterBoolean->addProxy (slaveBoolean, QList <QStringList>()
                                 << (QStringList() << "One" << "Three")
                                 << (QStringList() << "One" << "Three")
                                 << (QStringList() << "One" << "Three" << "Five")
                                 << (QStringList() << "Two" << "Four")
                                 );

        masterBoolean->addProxy (slaveSingleText, QList <QStringList>()
                                 << (QStringList() << "Text A")
                                 << (QStringList() << "Text B")
                                 << (QStringList() << "Text A")
                                 << (QStringList() << "Text C")
                                 );

        masterBoolean->addProxy (slaveMultiText, QList <QStringList>()
                                 << (QStringList() << "One" << "Three")
                                 << (QStringList() << "One" << "Three")
                                 << (QStringList() << "One" << "Three" << "Five")
                                 << (QStringList() << "Two" << "Four")
                                 );

        masterBoolean->addProxy (slaveAlphaSpinbox, QList <QStringList>()
                                 << (QStringList() << "Four")
                                 << (QStringList() << "Three")
                                 << (QStringList() << "Two")
                                 << (QStringList() << "One"));

        masterBoolean->addProxy (slaveIntegerSpinbox, QList <QStringList> ()
                                 << (QStringList() << "0")
                                 << (QStringList() << "7")
                                 << (QStringList() << "14")
                                 << (QStringList() << "21"));

        masterBoolean->addProxy (slaveDoubleSpinbox, QList <QStringList> ()
                                 << (QStringList() << "0.17")
                                 << (QStringList() << "0.34")
                                 << (QStringList() << "0.51")
                                 << (QStringList() << "0.68"));

        masterBoolean->addProxy (slaveSlider, QList <QStringList> ()
                                 << (QStringList() << "25")
                                 << (QStringList() << "50")
                                 << (QStringList() << "75")
                                 << (QStringList() << "100")
                                 );

        masterBoolean->addProxy (slaveDial, QList <QStringList> ()
                                 << (QStringList() << "25")
                                 << (QStringList() << "50")
                                 << (QStringList() << "75")
                                 << (QStringList() << "100")
                                 );

        //settings with proxies are not serialized by default
        //other settings non-serialized for demo purposes
        slaveBoolean->setSerializable (false);
        slaveSingleText->setSerializable (false);
        slaveMultiText->setSerializable (false);
        slaveAlphaSpinbox->setSerializable (false);
        slaveIntegerSpinbox->setSerializable (false);
        slaveDoubleSpinbox->setSerializable (false);
        slaveSlider->setSerializable (false);

        slaveBoolean->setDefaultValues (QStringList()
                                        << "One" << "Three" << "Five");

        slaveSingleText->setDefaultValue ("Text A");

        slaveMultiText->setDefaultValues (QStringList()
                                         << "One" << "Three" << "Five");

        slaveSingleText->setWidgetWidth (24);
        slaveMultiText->setWidgetWidth (24);

        slaveAlphaSpinbox->setDefaultValue ("Two");
        slaveAlphaSpinbox->setWidgetWidth (20);
        //slaveAlphaSpinbox->setPrefix ("No. ");
        //slaveAlphaSpinbox->setSuffix ("!");
        slaveAlphaSpinbox->setWrapping (true);

        slaveIntegerSpinbox->setDefaultValue (14);
        slaveIntegerSpinbox->setMinimum (0);
        slaveIntegerSpinbox->setMaximum (58);
        slaveIntegerSpinbox->setPrefix ("$");
        slaveIntegerSpinbox->setSuffix (".00");
        slaveIntegerSpinbox->setWidgetWidth (10);
        slaveIntegerSpinbox->setSpecialValueText ("Nothing!");

        slaveDoubleSpinbox->setDefaultValue (0.51);
        slaveDoubleSpinbox->setSingleStep(0.17);
        slaveDoubleSpinbox->setMaximum(4.0);

        slaveSlider->setMinimum (0);
        slaveSlider->setMaximum (100);
        slaveSlider->setDefaultValue (75);
        slaveSlider->setWidgetWidth (100);
        slaveSlider->setTicksAbove (true);
        slaveSlider->setTickInterval (25);

        slaveDial->setMinimum (0);
        slaveDial->setMaximum (100);
        slaveDial->setSingleStep (5);
        slaveDial->setDefaultValue (75);
        slaveDial->setTickInterval (25);
*/
        }
}

CSMSettings::UserSettings::~UserSettings()
{
    mUserSettingsInstance = 0;
}

void CSMSettings::UserSettings::loadSettings (const QString &fileName)
{
    mUserFilePath = QString::fromUtf8
                                (mCfgMgr.getUserConfigPath().string().c_str());

    QString globalFilePath = QString::fromUtf8
                                (mCfgMgr.getGlobalPath().string().c_str());

    QString localFilePath = QString::fromUtf8
                                (mCfgMgr.getLocalPath().string().c_str());

    bool isUser = QFile (mUserFilePath + fileName).exists();
    bool isSystem = QFile (globalFilePath + fileName).exists();

    QString otherFilePath = globalFilePath;

    //test for local only if global fails (uninstalled copy)
    if (!isSystem)
    {
        isSystem = QFile (localFilePath + fileName).exists();
        otherFilePath = localFilePath;
    }

    //error condition - notify and return
    if (!isUser || !isSystem)
    {
        QString message = QObject::tr("<br><b>An error was encountered loading \
                user settings files.</b><br><br> One or several files could not \
                be read.  This may be caused by a missing configuration file, \
                incorrect file permissions or a corrupted installation of \
                OpenCS.<br>");

        message += QObject::tr("<br>Global filepath: ") + globalFilePath;
        message += QObject::tr("<br>Local filepath: ") + localFilePath;
        message += QObject::tr("<br>User filepath: ") + mUserFilePath;

        displayFileErrorMessage ( message, true);
        return;
    }

    QSettings::setPath
                (QSettings::IniFormat, QSettings::UserScope, mUserFilePath);

    QSettings::setPath
                (QSettings::IniFormat, QSettings::SystemScope, otherFilePath);

    if (mSettings)
        delete mSettings;

    mSettings = new QSettings
        (QSettings::IniFormat, QSettings::UserScope, "opencs", QString(), this);

    addDefinitions (mSettings);
}

void CSMSettings::UserSettings::saveSettings
                                (const QMap <QString, QStringList> &settingMap)
{
    foreach (const QString &key, settingMap.keys())
        mSettings->setValue (key, settingMap.value (key));

    delete mSettings;
}

QString CSMSettings::UserSettings::settingValue (const QString &settingKey)
{
    QStringList names = settingKey.split('/');

    Setting *setting = findSetting(names.at(0), names.at(1));

    if (setting)
    {
        if (!setting->definedValues().isEmpty())
            return setting->definedValues().at(0);
    }
    return "";
}

CSMSettings::UserSettings& CSMSettings::UserSettings::instance()
{
    assert(mUserSettingsInstance);
    return *mUserSettingsInstance;
}