branch_helpers.dart

import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
import 'package:light_app/data/data.dart';

class BranchHelpers {
  const BranchHelpers._();

  //Don't change this list order, dart is uses the same list order, as [monday]..[sunday].
  static const weekDaysNames = [
    'monday',
    'tuesday',
    'wednesday',
    'thursday',
    'friday',
    'saturday',
    'sunday',
  ];

  static DayModel getSpecificDay({required BranchModel selectedBranch, required int weekDayNumber}) {
    DateTime currentTime = DateTime.now();
    String todayName = weekDaysNames[weekDayNumber - 1].toLowerCase();
    String yesterdayName = weekDayNumber == 1 ? weekDaysNames[6].toLowerCase() : weekDaysNames[weekDayNumber - 2].toLowerCase();

    DayModel today = selectedBranch.days.firstWhere((day) => day.day.toLowerCase() == todayName);
    DayModel yesterday = selectedBranch.days.firstWhere((day) => day.day.toLowerCase() == yesterdayName);

    TimeOfDay todayOpeningTime = TimeOfDay.fromDateTime(DateFormat.jm().parse(today.openAt));
    TimeOfDay todayClosingTime = TimeOfDay.fromDateTime(DateFormat.jm().parse(today.closeAt));
    TimeOfDay yesterdayOpeningTime = TimeOfDay.fromDateTime(DateFormat.jm().parse(yesterday.openAt));
    TimeOfDay yesterdayClosingTime = TimeOfDay.fromDateTime(DateFormat.jm().parse(yesterday.closeAt));

    DateTime todayCloseAt = todayClosingTime.hour < todayOpeningTime.hour
        ? DateTime(currentTime.year, currentTime.month, currentTime.day, todayClosingTime.hour, todayClosingTime.minute).add(const Duration(days: 1))
        : DateTime(currentTime.year, currentTime.month, currentTime.day, todayClosingTime.hour, todayClosingTime.minute);

    DateTime yesterdayCloseAt = yesterdayClosingTime.hour < const TimeOfDay(hour: 12, minute: 0).hour
        ? DateTime(currentTime.year, currentTime.month, currentTime.day, yesterdayClosingTime.hour, yesterdayClosingTime.minute).add(const Duration(days: 1))
        : DateTime(currentTime.year, currentTime.month, currentTime.day, yesterdayClosingTime.hour, yesterdayClosingTime.minute);

    bool isOpenToday = currentTime.isAfter(DateTime(currentTime.year, currentTime.month, currentTime.day, todayOpeningTime.hour, todayOpeningTime.minute)) && currentTime.isBefore(todayCloseAt);

    bool isOpenFromYesterday = currentTime.isBefore(DateTime(currentTime.year, currentTime.month, currentTime.day, yesterdayCloseAt.hour, yesterdayOpeningTime.minute)) && currentTime.isBefore(yesterdayCloseAt);

    if (isOpenToday) {
      return today;
    } else {
      if (isOpenFromYesterday) {
        return yesterday;
      } else {
        return today;
      }
    }
  }
  
  //weekDayNumber gonna be int as =>   final todayWeekDay = DateTime.now().weekday;
  //selectedBranch gonna be the selectedBranch
  static bool isOpenBranch({required BranchModel selectedBranch, required int weekDayNumber}) {
    DateTime currentTime = DateTime.now();
    String todayName = weekDaysNames[weekDayNumber - 1].toLowerCase();
    String yesterdayName = weekDayNumber == 1 ? weekDaysNames[6].toLowerCase() : weekDaysNames[weekDayNumber - 2].toLowerCase();

    DayModel today = selectedBranch.days.firstWhere((day) => day.day.toLowerCase() == todayName);
    DayModel yesterday = selectedBranch.days.firstWhere((day) => day.day.toLowerCase() == yesterdayName);

    TimeOfDay todayOpeningTime = TimeOfDay.fromDateTime(DateFormat.jm().parse(today.openAt));
    TimeOfDay todayClosingTime = TimeOfDay.fromDateTime(DateFormat.jm().parse(today.closeAt));
    TimeOfDay yesterdayOpeningTime = TimeOfDay.fromDateTime(DateFormat.jm().parse(yesterday.openAt));
    TimeOfDay yesterdayClosingTime = TimeOfDay.fromDateTime(DateFormat.jm().parse(yesterday.closeAt));

    DateTime todayCloseAt = todayClosingTime.hour < todayOpeningTime.hour
        ? DateTime(currentTime.year, currentTime.month, currentTime.day, todayClosingTime.hour, todayClosingTime.minute).add(const Duration(days: 1))
        : DateTime(currentTime.year, currentTime.month, currentTime.day, todayClosingTime.hour, todayClosingTime.minute);

    DateTime yesterdayCloseAt = yesterdayClosingTime.hour < const TimeOfDay(hour: 12, minute: 0).hour
        ? DateTime(currentTime.year, currentTime.month, currentTime.day, yesterdayClosingTime.hour, yesterdayClosingTime.minute).add(const Duration(days: 1))
        : DateTime(currentTime.year, currentTime.month, currentTime.day, yesterdayClosingTime.hour, yesterdayClosingTime.minute);

    bool isOpenToday = currentTime.isAfter(DateTime(currentTime.year, currentTime.month, currentTime.day, todayOpeningTime.hour, todayOpeningTime.minute)) && currentTime.isBefore(todayCloseAt);

    bool isOpenFromYesterday = currentTime.isBefore(DateTime(currentTime.year, currentTime.month, currentTime.day, yesterdayCloseAt.hour, yesterdayOpeningTime.minute)) && currentTime.isBefore(yesterdayCloseAt);

    return isOpenToday || isOpenFromYesterday;
  }
}