diameter/lib/utils/date_time_utils.dart

import 'package:diameter/config.dart';
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';

class DateTimeUtils {
  // TODO fix handling of time zones!

  static String displayDateTime(DateTime? date, {String fallback = ''}) {
    if (date == null) {
      return fallback;
    }
    DateTime localDate = date.toLocal();
    final DateFormat formatter = DateFormat('$dateFormat $timeFormat');
    return formatter.format(localDate);
  }

  static String displayDate(DateTime? date, {String fallback = ''}) {
    if (date == null) {
      return fallback;
    }
    DateTime localDate = date.toLocal();
    final DateFormat formatter = DateFormat(longDateFormat ?? dateFormat);
    return formatter.format(localDate);
  }

  static String displayTime(DateTime? date,
      {String fallback = '', bool? longFormat}) {
    if (date == null) {
      return fallback;
    }
    DateTime localDate = date.toLocal();
    final DateFormat formatter = DateFormat(
        longFormat == true ? longTimeFormat ?? timeFormat : timeFormat);
    return formatter.format(localDate);
  }

  static String displayTimeOfDay(TimeOfDay? time,
      {String fallback = '', bool? longFormat}) {
    if (time == null) {
      return fallback;
    }
    final DateFormat formatter = DateFormat(
        longFormat == true ? longTimeFormat ?? timeFormat : timeFormat);
    return formatter.format(convertTimeOfDayToDateTime(time));
  }

  static DateTime convertTimeOfDayToDateTime(TimeOfDay time) {
    return DateTime(
        dummyDate.year, dummyDate.month, dummyDate.day, time.hour, time.minute);
  }
}