datetime.h

#ifndef DATETIME_H
#define DATETIME_H
#include "src/opl.h"
 
namespace OPL {
 
class DateTime {
public:
    const inline static QString ISO_FORMAT_STRING = QStringLiteral("yyyy-MM-dd");
    const inline static QString DE_FORMAT_STRING = QStringLiteral("dd.MM.yyyy");
    const inline static QString EN_FORMAT_STRING = QStringLiteral("MM/dd/yyyy");
 
    const static inline QMap<OPL::DateFormat, QString> DATEFORMATSMAP = {
        {OPL::DateFormat::ISODate, ISO_FORMAT_STRING},
        {OPL::DateFormat::DE,      DE_FORMAT_STRING },
        {OPL::DateFormat::EN,      EN_FORMAT_STRING },
 
    };
 
    const static inline QStringList DISPLAY_NAMES = {
        QStringLiteral("ISO 8601: yyyy-MM-dd"),
        QStringLiteral("DE: dd.MM.yyyy"),
        QStringLiteral("EN: MM/dd/yyyy")
    };
 
    inline static QString dateToString(const QDate &date, OPL::DateFormat format = OPL::DateFormat::ISODate)
    {
        return date.toString(DATEFORMATSMAP.value(format));
    };
 
    static QDate parseInput(QString &user_input, OPL::DateFormat format);
 
    static void tryToFix(QString &user_input, OPL::DateFormat format);
 
    static void padCentury(QString &io_user_input, OPL::DateFormat format);
 
    static void padZeroes(QString &io_user_input);
 
    static void addSeperators(QString &io_user_input, const OPL::DateFormat &format);
 
    static bool containsSeperator(const QString &user_input);
 
 
 
    static const QStringList& getDisplayNames();
 
    static const QString getFormatString(OPL::DateFormat format);
 
    static const QString currentDate();
 
    static inline const QString dateTimeToString (const QDateTime& date_time, OPL::DateTimeFormat format) {
        switch (format) {
        case OPL::DateTimeFormat::Default:
            return date_time.toString(Qt::ISODate);
        case OPL::DateTimeFormat::Backup:
            return date_time.toString(QStringLiteral("yyyy_MM_dd_T_hh_mm"));
        default:
            return QString();
        }
    }
 
    static inline QDateTime fromString(const QString& date_time_string)
    {
        auto date_time = QDateTime::fromString(date_time_string, QStringLiteral("yyyy-MM-ddhh:mm"));
        date_time.setTimeZone(QTimeZone::utc());
        return date_time;
    }
 
};
 
} // namespace OPL
 
#endif // DATETIME_H