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#pragma once
#include "std/string.hpp"
#include "std/map.hpp"
#include "std/mutex.hpp"
namespace settings
{
/// Current location state mode. @See location::EMyPositionMode.
extern char const * kLocationStateMode;
/// Metric or Feet.
extern char const * kMeasurementUnits;
template <class T>
bool FromString(string const & str, T & outValue);
template <class T>
string ToString(T const & value);
class StringStorage
{
typedef map<string, string> ContainerT;
ContainerT m_values;
mutable mutex m_mutex;
StringStorage();
void Save() const;
public:
static StringStorage & Instance();
void Clear();
bool GetValue(string const & key, string & outValue) const;
void SetValue(string const & key, string && value);
void DeleteKeyAndValue(string const & key);
};
/// Retrieve setting
/// @return false if setting is absent
template <class ValueT>
bool Get(string const & key, ValueT & outValue)
{
string strVal;
return StringStorage::Instance().GetValue(key, strVal) && FromString(strVal, outValue);
}
/// Automatically saves setting to external file
template <class ValueT>
void Set(string const & key, ValueT const & value)
{
StringStorage::Instance().SetValue(key, ToString(value));
}
inline void Delete(string const & key) { StringStorage::Instance().DeleteKeyAndValue(key); }
inline void Clear() { StringStorage::Instance().Clear(); }
/// Use this function for running some stuff once according to date.
/// @param[in] date Current date in format yymmdd.
bool IsFirstLaunchForDate(int date);
}
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