import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:dio/dio.dart';
import 'dart:async';

import 'package:tsacdop/class/podcastlocal.dart';
import 'package:tsacdop/class/episodebrief.dart';
import 'package:tsacdop/class/sqflite_localpodcast.dart';
import 'package:tsacdop/util/episodegrid.dart';

class PodcastDetail extends StatefulWidget {
  PodcastDetail({Key key, this.podcastLocal}) : super(key: key);
  final PodcastLocal podcastLocal;
  @override
  _PodcastDetailState createState() => _PodcastDetailState();
}

class _PodcastDetailState extends State<PodcastDetail> {
  final GlobalKey<RefreshIndicatorState> _refreshIndicatorKey =
      GlobalKey<RefreshIndicatorState>();

  @override
  void initState() {
    super.initState();
  }

  @override 
  void dispose(){
    super.dispose();
  }

  Future _updateRssItem(PodcastLocal podcastLocal) async {
    var dbHelper = DBHelper();
    final response = await Dio().get(podcastLocal.rssUrl);
    final result = await dbHelper.savePodcastRss(response.data);
    if (result == 0 && mounted) setState(() {});
  }

  Future<List<EpisodeBrief>> _getRssItem(PodcastLocal podcastLocal) async {
    var dbHelper = DBHelper();
    List<EpisodeBrief> episodes = await
        dbHelper.getRssItem(podcastLocal.title);
    return episodes;
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.podcastLocal.title,),
        elevation: 0.0,
        backgroundColor: Colors.grey[100],
        centerTitle: true,
      ),
      body: RefreshIndicator(
          key: _refreshIndicatorKey,
          color: Colors.blue[500],
          onRefresh: () => _updateRssItem(widget.podcastLocal),
          child: FutureBuilder<List<EpisodeBrief>>(
            future: _getRssItem(widget.podcastLocal),
            builder: (context, snapshot) {
              if (snapshot.hasError) print(snapshot.error);
              return (snapshot.hasData)
                  ? EpisodeGrid(podcast: snapshot.data, showDownload: true, showFavorite: true, showNumber: true, heroTag: 'podcast',)
                  : Center(child: CircularProgressIndicator());
            },
          )),
    );
  }
}