import 'package:collection/collection.dart';
import '../models/language.dart';

/// Compare two lists by their content ignoring their elements order.
bool equalContent(List<dynamic> list1, List<dynamic> list2) {
  return const DeepCollectionEquality.unordered().equals(list1, list2);
}

/// Sort the given list of languages so that German appears first, English second, and all other languages follow in alphabetical order.
List<Language> sortLanguageList(List<Language> langList) {
  List<Language> sortedLanguages = List.from(langList);
  sortedLanguages.sort((a, b) {
    // German first
    if (a.code == 'de') return -1;
    if (b.code == 'de') return 1;
    // English second
    if (a.code == 'en') return -1;
    if (b.code == 'en') return 1;
    // All others by name ascending
    return a.name.compareTo(b.name);
  });
  return sortedLanguages;
}