Series Grid View Logic

    AppManager appManager = Provider.of<AppManager>(context, listen: true);
    List<dynamic> books = [];
    List<Book> bbooks = [];
    appManager = Provider.of<AppManager>(context, listen: false);
    if (appManager.selectedAuthor == null) {
      bbooks = appManager.books;
      bbooks.sort((a, b) => (a.title.startsWith('The ')
              ? a.title.replaceFirst('The ', '').toLowerCase()
              : a.title.toLowerCase())
          .compareTo(
              (b.title.startsWith('The ') ? b.title.replaceFirst('The ', '').toLowerCase() : b.title.toLowerCase())));
      books.add(bbooks);
    } else if (appManager.libraryBooksViewType == 'Series View') {
      List<Book> authorBooks = [
        for (Book b in appManager.books)
          if (b.author.name == appManager.selectedAuthor.name) b
      ].toList();
      // this seems to reorder them into alphabetical order by series. Thats the goal at least.
      //authorBooks.sort((a, b) => a.series == null ? 0 : a.series.compareTo(b.series == null ? 1 : b.series));
      authorBooks.sort((a, b) => a.getSeries.compareTo(b.getSeries));
      for (Book b in authorBooks) {
        if (b.series != null) {
          bool found = false;
          for (var entry in books) {
            if (entry is Series && entry.name == b.series) {
              found = true;
              if (b.subseries != null) {
                if (entry.subseries.length > 0) {
                  bool foundmore = false;
                  for (Subseries subseries in entry.subseries) {
                    if (subseries.name == b.subseries) {
                      foundmore = true;
                      subseries.books.add(b);
                    }
                  }
                  if (foundmore == false) {
                    Subseries sub = Subseries();
                    sub.name = b.subseries;
                    sub.books.add(b);
                    entry.subseries.add(sub);
                  }
                } else {
                  Subseries sub = Subseries();
                  sub.name = b.subseries;
                  sub.books.add(b);
                  entry.subseries.add(sub);
                }
              } else {
                entry.books.add(b);
              }
            }
          }
          if (found == false) {
            Series s = Series();
            s.name = b.series;
            if (b.subseries != null) {
              Subseries sub = Subseries();
              sub.name = b.subseries;
              sub.books.add(b);
              s.subseries.add(sub);
            } else {
              s.books.add(b);
            }
            books.add(s);
          }
        } else {
          bbooks.add(b);
        }
      }
      if (bbooks.length > 0) {
        books.insert(0, bbooks);
      }
    } else {
      List<Book> bbooks = [];
      for (Book b in appManager.books) {
        if (b.author.name == appManager.selectedAuthor.name) {
          bbooks.add(b);
        }
      }
      bbooks.sort((a, b) => (a.title.startsWith('The ')
              ? a.title.replaceFirst('The ', '').toLowerCase()
              : a.title.toLowerCase())
          .compareTo(
              (b.title.startsWith('The ') ? b.title.replaceFirst('The ', '').toLowerCase() : b.title.toLowerCase())));
      books.add(bbooks);
    }