extractCalendar function

Future<Week> extractCalendar(BeautifulSoup soup, int year, int weekNum)

Implementation

Future<Week> extractCalendar(BeautifulSoup soup, int year, int weekNum) async {
  List<ModulRange> modulRanges = [];
  List<Day> days = [];
  var calendarSoup = soup.find("tbody");
  var titleSoup =
      calendarSoup?.find("td", selector: "tr.s2dayHeader")?.children;
  titleSoup?.removeAt(0).decompose();
  if (calendarSoup != null && titleSoup != null) {
    List<String> titles = [];
    for (var dayTitle in titleSoup) {
      titles.add(dayTitle.text);
    }

    var informationHeaders =
        calendarSoup.findAll("*", selector: "td.s2infoHeader");
    informationHeaders.removeAt(0).decompose();
    List<List<String>> informations = [];
    for (var informationHeader in informationHeaders) {
      List<String> informationsInner = [];
      var infos = informationHeader.findAll("*", selector: "a.s2skemabrik");
      for (var element in infos) {
        informationsInner.add(element.text);
      }
      informations.add(informationsInner);
    }

    var calendarDays =
        calendarSoup.findAll("*", selector: "div.s2skemabrikcontainer");
    Bs4Element modulRangesColumn = calendarDays.removeAt(0);

    for (int i = 0; i < calendarDays.length; i++) {
      var day = calendarDays[i];
      var informationsForThisDay = informations[i];
      var dayMatches = modulTimePattern.firstMatch(titles[i]);
      List<int> dayMonthAndDay = dayMatches != null
          ? titles[i]
              .substring(dayMatches.start, dayMatches.end)
              .split("/")
              .map((e) => int.parse(e))
              .toList()
          : [1, 1];
      var dayTime = DateTime(year, dayMonthAndDay[1], dayMonthAndDay[0]);
      List<CalendarEvent> dayEvents = [];
      day.findAll("*", selector: "a.s2bgbox").forEach((piece) {
        var event = extractModul(piece, day: dayTime);
        if (event != null) {
          dayEvents.add(event);
        }
      });
      days.add(Day(
          informations: informationsForThisDay,
          events: dayEvents,
          date: dayTime));
    }

    List<Bs4Element> modulRangeContainers =
        modulRangesColumn.findAll('*', class_: 's2module-info');
    for (var modulRangeContainer in modulRangeContainers) {
      List<String> modulAndTimes = modulRangeContainer.text.split(". modul");
      if (modulAndTimes.length == 2) {
        int? modulNumber = int.tryParse(modulAndTimes[0]);
        List<String> times = modulAndTimes[1].split("-");
        DayTime? start = dayTimeFromString(times[0]);
        DayTime? end = dayTimeFromString(times[1]);
        if (modulNumber != null && start != null && end != null) {
          modulRanges
              .add(ModulRange(number: modulNumber, start: start, end: end));
        }
      }
    }
  }

  return Week(days: days, weekNum: weekNum, modulRanges: modulRanges);
}