#pragma once

#include <QSettings>
#include <QVariant>
#include <QMutex>
#include <QStringList>

#include "../mischelpers_global.h"

class MISCHELPERS_EXPORT CSettings: public QObject
{
	Q_OBJECT

public:
	struct SStrRef
	{
		SStrRef(const char* pRef)
		 : Ref(pRef) {}

		bool operator < (const SStrRef& Other) const {return strcmp(Ref, Other.Ref) < 0;}
		bool operator == (const SStrRef& Other) const {return strcmp(Ref, Other.Ref) == 0;}

		operator QString() const {return QString(Ref);}

		const char* Ref;
	};

	union SCacheVal
	{
        bool	_Bool;
        qint32	_Int;
        quint32	_UInt;
        quint64	_UInt64;
	};

	struct SSetting
	{
		SSetting(){
			MinValue = 0;
			MaxValue = 0;
		}

		SSetting(const QVariant& value){
			Value = value;
			MinValue = 0; 
			MaxValue = 0;
		}

		SSetting(qint64 value, qint64 minvalue = LLONG_MIN, qint64 maxvalue = LLONG_MAX) {
			Value = value;
			MinValue = minvalue; 
			MaxValue = maxvalue;
		}

		SSetting(const QString& value, const QStringList& values) {
			Value = value;
			MinValue = 0; 
			MaxValue = 0;
			Values = values;
		}

		bool Check(const QVariant& value) const
		{
			if(MinValue != MaxValue)
			{
				if(!value.canConvert(QVariant::LongLong))
					return false;
				qint64 Test = value.toLongLong();
				if(Test < MinValue || MinValue > MaxValue)
					return false;
			}
			else if(!Values.isEmpty())
			{
				if(!value.canConvert(QVariant::String))
					return false;
				if(!Values.contains(value.toString()))
					return false;
			}
			return true;
		}

		virtual bool IsBlob() const {return false;}

		QVariant Value;
		qint64 MinValue;
		qint64 MaxValue;
		QStringList Values;
	};

	struct SBlobSetting: SSetting
	{
		SBlobSetting(const QByteArray& value){
			Value = value;
			MinValue = 0;
			MaxValue = 0;
		}
		virtual bool IsBlob() const {return true;}
	};

	CSettings(const QString& AppDir, const QString& AppName, bool bShared = false, QMap<QString, SSetting> DefaultValues = QMap<QString, SSetting>(), QObject* qObject = NULL);
	virtual ~CSettings();

	void				DelValue(const QString& key);
	bool				SetValue(const QString& key, const QVariant& value);
	QVariant			GetValue(const QString& key, const QVariant& preset = QVariant());

	void				SetBlob(const QString& key, const QByteArray& value);
	QByteArray			GetBlob(const QString& key);

#define IMPL_CFG_CACHE_GET(x,y,z) \
	x					Get##y(const SStrRef& key, x def = 0) \
	{ \
		QMutexLocker Locker(&m_Mutex); \
		QMap<SStrRef, SCacheVal>::Iterator I =  m_ValueCache.find(key); \
		if(I != m_ValueCache.end()) \
            return I.value()._##y; \
		Locker.unlock(); \
		x val = GetValue(key, def).to##z(); \
		Locker.relock(); \
		SCacheVal entry; \
        entry._##y = val; \
		m_ValueCache.insert(key, entry); \
		return val; \
	}
	IMPL_CFG_CACHE_GET(bool, Bool, Bool);
	IMPL_CFG_CACHE_GET(qint32, Int, Int);
	IMPL_CFG_CACHE_GET(quint32, UInt, UInt);
	IMPL_CFG_CACHE_GET(quint64, UInt64, ULongLong);
#undef IMPL_CFG_CACHE_GET

	const QString		GetString(const QString& key, const QVariant& preset = QVariant())		{return GetValue(key, preset).toString();}
	const QStringList	GetStringList(const QString& key, const QVariant& preset = QVariant())	{return GetValue(key, preset).toStringList();}

	const QStringList 	ListSettings()												{QMutexLocker Locker(&m_Mutex); return m_pConf->allKeys();}
	const QStringList 	ListGroupes()												{QMutexLocker Locker(&m_Mutex); return m_pConf->childGroups();}
	const QStringList 	ListKeys(const QString& Root);

	const QString		GetConfigDir()												{QMutexLocker Locker(&m_Mutex); return m_ConfigDir;}
	const bool			IsPortable()												{QMutexLocker Locker(&m_Mutex); return m_bPortable;}

	const bool			IsWritable()												{QMutexLocker Locker(&m_Mutex); return m_pConf->isWritable();}

protected:
	QMutex				m_Mutex;
	//QMap<QString, SSetting> m_DefaultValues;

	QMap<SStrRef, SCacheVal>m_ValueCache;

	QString				m_ConfigDir;
	bool				m_bPortable;

	QSettings*			m_pConf;
};