//
// Created by villuton on 24.03.25.
//
#include "Nmea0183Parser_Time.h"
#include "Nmea0183Parser_Private.h"


#define NMEA_HourStrLen (2)
#define NMEA_MinuteStrLen (2)
#define NMEA_SecondStrLen (2)

#define NMEA_HourStrOffset (0)
#define NMEA_MinuteStrOffset (NMEA_HourStrOffset + NMEA_HourStrLen)
#define NMEA_SecondStrOffset (NMEA_MinuteStrOffset + NMEA_MinuteStrLen)
#define NMEA_UTC_PointStrOffset (1)
#define NMEA_DecimalSecondStrOffset (NMEA_SecondStrOffset + NMEA_SecondStrLen + NMEA_UTC_PointStrOffset)

#define NMEA_UTC_PointPosition (6)

/**
 * \brief Functions of a low level for analysis of
 * packages of NMEA stream.
 * UTC utc parsing.
 * @param utcString
 * @param utcStringEnd
 * @param utc
 * @return
 */
bool Nmea0183ParseUtc(char *utcString, char const *utcStringEnd, tNmeaUtc *utc) {

    uint32_t len = utcStringEnd - utcString;
    if(len < 6){
        return false;
    }

    utc->hour = Nmea0183ParseShortCharsDecimalNumber(utcString + NMEA_HourStrOffset, NMEA_HourStrLen);
    utc->minute = Nmea0183ParseShortCharsDecimalNumber(utcString + NMEA_MinuteStrOffset, NMEA_MinuteStrLen);
    utc->second = Nmea0183ParseShortCharsDecimalNumber(utcString + NMEA_SecondStrOffset, NMEA_SecondStrLen);

    if (utcString[NMEA_UTC_PointPosition] == '.') {
        uint8_t decimalPortionLen = len - NMEA_HourStrLen + NMEA_MinuteStrLen + NMEA_SecondStrLen + NMEA_UTC_PointStrOffset;
        utc->millisecond = Nmea0183ParseShortCharsDecimalNumber(utcString + NMEA_DecimalSecondStrOffset, decimalPortionLen);
        utc->millisecond *= 1000 / (10 * decimalPortionLen);
    }

    return true;
}


#define NMEA_DayOffset (0)
#define NMEA_DayLen (2)
#define NMEA_MonthOffset (NMEA_DayOffset + NMEA_DayLen)
#define NMEA_MonthLen (2)
#define NMEA_YearOffset (NMEA_MonthOffset + NMEA_MonthLen)
#define NMEA_YearLen (2)
/**
 * \brief Functions of a low level for analysis of
 * packages of NMEA stream.
 * Date parsing.
 * @param utcString
 * @param utcStringEnd
 * @param date
 * @return
 */
bool Nmea0183ParseDate(char *utcString, char const *utcStringEnd, tNmeaDate *date) {

    uint32_t len = utcStringEnd - utcString;

    if (len != 6) {
        return false;
    }

    date->day = Nmea0183ParseShortCharsDecimalNumber(utcString + NMEA_DayOffset, NMEA_DayLen);
    date->month = Nmea0183ParseShortCharsDecimalNumber(utcString + NMEA_MonthOffset, NMEA_MonthLen);
    date->year = Nmea0183ParseShortCharsDecimalNumber(utcString + NMEA_YearOffset, NMEA_YearLen);

    return true;
}