import 'package:flutter/cupertino.dart';
import 'package:hiddingsel_app/appflow/controller/articles.dart';
import 'package:hiddingsel_app/appflow/model/represented_organisations.dart';
import 'package:hiddingsel_app/appflow/view/navigation_drawer.dart';

import '../../model/articles.dart';
import '../further_pages/article.dart';

class ArticleListView extends StatelessWidget with NavigationDrawerItem{

  final String title;
  final Stream<List<ArticleModel>> _articleStream;
  final Function(PreferredSizeWidget appBar, Widget body)? _onChange;

  ArticleListView(this._onChange) : title = 'News', _articleStream = ArticleController.getArticleListStream();
  ArticleListView.favorites(this._onChange) : title = 'Favoriten', _articleStream = ArticleController.getFavoriteArticleListStream();
  ArticleListView.search(String searchWord, this._onChange) : title = 'Suche', _articleStream = ArticleController.getSearchResultListStream(searchWord);
  ArticleListView.organisation(RepresentedOrganisationModel organisation, this._onChange, {scrollController}) : title = 'Organisation', _articleStream = ArticleController.getOrganisationArticleListStream(organisation);

  @override
  Widget build(BuildContext context) => StreamBuilder(
    initialData: List<ArticleModel>.empty(),
      stream: _articleStream,
      builder: (context, AsyncSnapshot<List<ArticleModel>> snapshot) => buildArticleListView(context, snapshot.data??[])
  );

  Widget buildArticleListView(BuildContext context, List<ArticleModel> list) => ListView.builder(
    itemCount: list.length,
    itemBuilder: (context, index) => ArticleThumbnailView(list[index], _onChange),
  );
}