TimeOfDay.h

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#pragma once
 
#include <cstdint>
#include <string>
#include <cstdio>
 
#include "nlohmann/json.hpp"
struct TimeOfDay
{
    uint8_t hour = 0;
    uint8_t minute = 0;
    uint8_t second = 0;
 
    static TimeOfDay fromString(const char *hhmm) {
        TimeOfDay t;
        if (sscanf(hhmm, "%2hhu:%2hhu:%2hhu", &t.hour, &t.minute, &t.second) == 3) {
            return t;
        } else if (sscanf(hhmm, "%2hhu:%2hhu", &t.hour, &t.minute) == 2) {
            t.second = 0;
            return t;
        }
        return {0, 0, 0};
    }
 
    static std::string toString(const TimeOfDay &time) {
        char buf[9];
        if (time.second > 0) {
            snprintf(buf, sizeof(buf), "%02u:%02u:%02u", time.hour, time.minute, time.second);
        } else {
            snprintf(buf, sizeof(buf), "%02u:%02u", time.hour, time.minute);
        }
        return std::string(buf);
    }
 
    // Comparison operators
 
    bool operator==(const TimeOfDay &other) const {
        return hour == other.hour && minute == other.minute && second == other.second;
    }
 
    bool operator!=(const TimeOfDay &other) const {
        return !(*this == other);
    }
 
    bool operator<(const TimeOfDay &other) const {
        if (hour != other.hour) return hour < other.hour;
        if (minute != other.minute) return minute < other.minute;
        return second < other.second;
    }
 
    bool operator<=(const TimeOfDay &other) const {
        return !(*this > other);
    }
 
    bool operator>(const TimeOfDay &other) const {
        return other < *this;
    }
 
    bool operator>=(const TimeOfDay &other) const {
        return !(*this < other);
    }
    
};