ZonedTime.h

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#pragma once
 
#include "DateTime.h"
#include <Data/CString.h>
 
class ZonedTime
{
public:
    ZonedTime(time_t utc, const DateTime::ZoneInfo& zoneInfo) : utc(utc), zoneInfo(zoneInfo)
    {
    }
 
    explicit ZonedTime(time_t utc = 0) : utc(utc), zoneInfo{{"UTC"}}
    {
    }
 
    ZonedTime(const ZonedTime& other) = default;
 
    operator time_t() const
    {
        return utc;
    }
 
    ZonedTime toUtc() const
    {
        return ZonedTime(utc);
    }
 
    time_t local() const
    {
        return utc + zoneInfo.offsetSecs();
    }
 
    const DateTime::ZoneInfo& getZoneInfo() const
    {
        return zoneInfo;
    }
 
    const DateTime::ZoneInfo::Tag& tag() const
    {
        return zoneInfo.tag;
    }
 
    int16_t offsetMins() const
    {
        return zoneInfo.offsetMins;
    }
 
    int offsetSecs() const
    {
        return zoneInfo.offsetSecs();
    }
 
    bool isDst() const
    {
        return zoneInfo.isDst;
    }
 
    String format(const char* formatString) const
    {
        DateTime dt(local());
        return dt.format(formatString, &zoneInfo);
    }
 
    String format(const String& formatString) const
    {
        return format(formatString.c_str());
    }
 
    String toISO8601() const
    {
        DateTime dt(local());
        return dt.toISO8601(&zoneInfo);
    }
    String toString() const
    {
        return format(defaultFormat ? defaultFormat.c_str() : _F("%a %d %b %Y %T %Z"));
    }
 
    static void setDefaultFormat(const String& format)
    {
        defaultFormat = format;
    }
 
private:
    static CString defaultFormat;
    time_t utc;
    DateTime::ZoneInfo zoneInfo;
};