export function formatHDate()

in web/frontend/src/app/shared/locale.timezone.ts [294:393]

• 84 lines of code
• 31 McCabe index (conditional complexity)

export function formatHDate(
  data: string,
  filter_date_format?: string[],
  filter_time_format?: string[],
  filter_timezone?: any[],
  gridFormat = false,
  nanoTime = '',
  showNanoSeconds = false,
  periodicity = 0
) {
  if (!data) {
    return null;
  }

  // UTC
  /*  let date = toUtc(data);
   if (filter_timezone && filter_timezone.length) {
   date = toUtc(hdDateTZ(date, filter_timezone[0].name));
   }*/

  // Locale time
  let date = new HdDate(nanoTime || data);
  const nanoSeconds = date.getNanosFraction();

  if (filter_timezone && filter_timezone.length) {
      // data is in UTC format, but HdDate creates a Date object with the local timezone
      const newDate = new HdDate(data);
      // Date object must be displayed according to the selected timezone
      const offset = newDate.getTimezoneOffset() + filter_timezone[0].offset;
      newDate.setMilliseconds(newDate.getMilliseconds() + offset * 60 * 1000);
      newDate.setNanoseconds(nanoSeconds);
      date = newDate;
  }

  let date_format = localeFormat;
  let time_format = 'HH:mm:ss fff';
  if (filter_date_format && filter_date_format.length) {
    date_format = filter_date_format[0];
  }
  if (filter_time_format && filter_time_format.length) {
    time_format = filter_time_format[0];
  }

  const initialDate = new HdDate(date.getTime() - periodicity);

  if (periodicity) {
    if (periodicity >= 31104e6) { // year
      return `${date.getFullYear()}`;
    } else if (periodicity >= 7776e6) { // quarter
      const dateInsidePeriodicity = new HdDate(date.getTime() - 2592e6);
      const month = dateInsidePeriodicity.getMonth();
      const year = dateInsidePeriodicity.getFullYear();
      switch (month) {
        case 0:
        case 1:
        case 2:
          return `I ${year}`;
        case 3:
        case 4:
        case 5:
          return `II ${year}`;
        case 6:
        case 7:
        case 8:
          return `III ${year}`;
        case 9:
        case 10:
        case 11:
          return `IV ${year}`;
      }
    } else if (periodicity >= 2592e6) { // months
      return `${months[date.getMonth()]} ${date.getFullYear()}`;
    } else if (periodicity >= 864e5) { // days&weeks
      return initialDate.toLocaleFormat(date_format);
    } else if (periodicity >= 6e4) { // hours, minutes
      return `${initialDate.toLocaleFormat(date_format)} 
        ${formatOneDigitNumber(initialDate.getHours())}:${formatOneDigitNumber(initialDate.getMinutes())} - 
        ${formatOneDigitNumber(date.getHours())}:${formatOneDigitNumber(date.getMinutes())}`;
    } else { // seconds
      return `${initialDate.toLocaleFormat(date_format)} 
        ${formatOneDigitNumber(initialDate.getHours())}:${formatOneDigitNumber(initialDate.getMinutes())}:${formatOneDigitNumber(initialDate.getSeconds())}
        - ${formatOneDigitNumber(date.getHours())}:${formatOneDigitNumber(date.getMinutes())}:${formatOneDigitNumber(date.getSeconds())}`;
    }
  }

  let dateAsString = date.toLocaleFormat(date_format) + ' ' + date.toLocaleFormat(time_format);

  if (!showNanoSeconds && time_format.includes('ffffff')) {
    const splitDate = dateAsString.split('.');
    const milliseconds = splitDate.pop();
    let filteredSeconds = milliseconds.slice(0, 3);
    for (let i = 3; i < milliseconds.length; i++) {
      if (milliseconds[i] !== '0') {
        filteredSeconds += milliseconds[i];
      }
    }
    dateAsString = `${splitDate.join('')}.${filteredSeconds}`;
  }
  return dateAsString;
}