tsacdop-podcast-app-android/lib/home/appbar/addpodcast.dart

import 'dart:io';
import 'dart:convert';
import 'dart:async';

import 'package:flutter/material.dart';
import 'package:color_thief_flutter/color_thief_flutter.dart';
import 'package:dio/dio.dart';
import 'package:provider/provider.dart';
import 'package:path_provider/path_provider.dart';
import 'package:image/image.dart' as img;
import 'package:fluttertoast/fluttertoast.dart';
import 'package:uuid/uuid.dart';

import 'package:tsacdop/class/importompl.dart';
import 'package:tsacdop/class/podcast_group.dart';
import 'package:tsacdop/class/searchpodcast.dart';
import 'package:tsacdop/class/podcastlocal.dart';
import 'package:tsacdop/local_storage/sqflite_localpodcast.dart';
import 'package:tsacdop/home/home.dart';
import 'package:tsacdop/home/appbar/popupmenu.dart';
import 'package:tsacdop/webfeed/webfeed.dart';

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  final _MyHomePageDelegate _delegate = _MyHomePageDelegate();
  final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();

  @override
  Widget build(BuildContext context) {
    return  Scaffold(
        key: _scaffoldKey,
        appBar: AppBar(
          elevation: 0,
          centerTitle: true,
          backgroundColor: Colors.grey[100],
          leading: IconButton(
            tooltip: 'Add',
            icon: const Icon(Icons.add_circle_outline),
            onPressed: () async {
              await showSearch<int>(
                context: context,
                delegate: _delegate,
              );
            },
          ),
          title: Image(
            image: AssetImage('assets/text.png'),
            height: 30,
          ),
          actions: <Widget>[
            PopupMenu(),
          ],
        ),
        body: Home(),
    );
  }
}

class _MyHomePageDelegate extends SearchDelegate<int> {
  static Future<List> getList(String searchText) async {
    String url =
        "https://listennotes.p.mashape.com/api/v1/search?only_in=title%2Cdescription&q=" +
            searchText +
            "&sort_by_date=0&type=podcast";
    Response response = await Dio().get(url,
        options: Options(headers: {
          'X-Mashape-Key': "UtSwKG4afSmshZfglwsXylLKJZHgp1aZHi2jsnSYK5mZi0A32T",
          'Accept': "application/json"
        }));
    Map searchResultMap = jsonDecode(response.toString());
    var searchResult = SearchPodcast.fromJson(searchResultMap);
    return searchResult.results;
  }

  @override
  Widget buildLeading(BuildContext context) {
    return IconButton(
      tooltip: 'Back',
      icon: AnimatedIcon(
        icon: AnimatedIcons.menu_arrow,
        progress: transitionAnimation,
      ),
      onPressed: () {
        close(context, 1);
      },
    );
  }

  @override
  Widget buildSuggestions(BuildContext context) {
    if (query.isEmpty)
      return Center(
          child: Container(
        padding: EdgeInsets.only(top: 400),
        child: Image(
          image: AssetImage('assets/listennotes.png'),
          height: 20,
        ),
      ));
    return FutureBuilder(
      future: getList(query),
      builder: (BuildContext context, AsyncSnapshot<List> snapshot) {
        if (!snapshot.hasData && query != null)
          return Container(
            padding: EdgeInsets.only(top: 200),
            alignment: Alignment.topCenter,
            child: CircularProgressIndicator(),
          );
        List content = snapshot.data;
        return ListView.builder(
          scrollDirection: Axis.vertical,
          itemCount: content.length,
          itemBuilder: (BuildContext context, int index) {
            return SearchResult(
              onlinePodcast: content[index],
            );
          },
        );
      },
    );
  }

  @override
  List<Widget> buildActions(BuildContext context) {
    return <Widget>[
      if (query.isEmpty)
        Center()
      else
        IconButton(
          tooltip: 'Clear',
          icon: const Icon(Icons.clear),
          onPressed: () {
            query = '';
          },
        ),
    ];
  }

  @override
  Widget buildResults(BuildContext context) {
    if (query.isEmpty)
      return Container(
        height: 10,
        width: 10,
        margin: EdgeInsets.only(top: 400),
        child: SizedBox(
          height: 10,
          child: Image.asset(
            'assets/listennote.png',
            fit: BoxFit.fill,
          ),
        ),
      );
    return FutureBuilder(
      future: getList(query),
      builder: (BuildContext context, AsyncSnapshot<List> snapshot) {
        if (!snapshot.hasData && query != null)
          return Container(
            padding: EdgeInsets.only(top: 200),
            alignment: Alignment.topCenter,
            child: CircularProgressIndicator(),
          );
        List content = snapshot.data;
        return ListView.builder(
          scrollDirection: Axis.vertical,
          itemCount: content.length,
          itemBuilder: (BuildContext context, int index) {
            return SearchResult(
              onlinePodcast: content[index],
            );
          },
        );
      },
    );
  }
}

class SearchResult extends StatefulWidget {
  final OnlinePodcast onlinePodcast;
  SearchResult({this.onlinePodcast, Key key}) : super(key: key);
  @override
  _SearchResultState createState() => _SearchResultState();
}

class _SearchResultState extends State<SearchResult> {
  bool _issubscribe;
  bool _adding;
  bool _showDes;

  @override
  void initState() {
    super.initState();
    _issubscribe = false;
    _adding = false;
    _showDes = false;
  }

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

  Future<String> getColor(File file) async {
    final imageProvider = FileImage(file);
    var colorImage = await getImageFromProvider(imageProvider);
    var color = await getColorFromImage(colorImage);
    String primaryColor = color.toString();
    return primaryColor;
  }

  @override
  Widget build(BuildContext context) {
    var importOmpl = Provider.of<ImportOmpl>(context, listen: false);
    var groupList = Provider.of<GroupList>(context, listen: false);
    savePodcast(String rss) async {
      print(rss);
      if (mounted) setState(() => _adding = true);

      importOmpl.importState = ImportState.import;
      try {
      Response response = await Dio().get(rss);
      
      String _realUrl = response.realUri.toString();
      if (mounted) setState(() => _issubscribe = true);

      var _p = RssFeed.parse(response.data);

      print(_p.title);

      var dir = await getApplicationDocumentsDirectory();
      
        Response<List<int>> imageResponse = await Dio().get<List<int>>(
            _p.itunes.image.href,
            options: Options(responseType: ResponseType.bytes));

        img.Image image = img.decodeImage(imageResponse.data);
        img.Image thumbnail = img.copyResize(image, width: 300);
        String _uuid = Uuid().v4();
        File("${dir.path}/$_uuid.png")
          ..writeAsBytesSync(img.encodePng(thumbnail));
        String _imagePath = "${dir.path}/$_uuid.png";
        String _primaryColor =
            await getColor(File("${dir.path}/$_uuid.png"));
        PodcastLocal podcastLocal = PodcastLocal(
            _p.title, _p.itunes.image.href, _realUrl, _primaryColor, _p.author, _uuid, _imagePath);
        podcastLocal.description = _p.description;
        groupList.subscribe(podcastLocal);

        importOmpl.importState = ImportState.parse;
        var dbHelper = DBHelper();
        await dbHelper.savePodcastRss(_p, _uuid);

        importOmpl.importState = ImportState.complete;

      } catch (e) {
        importOmpl.importState = ImportState.error;
        Fluttertoast.showToast(
          msg: 'Network error, Subscribe failed',
          gravity: ToastGravity.BOTTOM,
        );
        await Future.delayed(Duration(seconds: 10));
        importOmpl.importState = ImportState.stop;
      }
    }

    return Container(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.start,
        mainAxisSize: MainAxisSize.min,
          children: <Widget>[
          ListTile(
            contentPadding: EdgeInsets.symmetric(horizontal: 30.0),
            onTap: (){setState(() {
              _showDes = !_showDes;
            });},
            leading: ClipRRect(
              borderRadius: BorderRadius.all(Radius.circular(20.0)),
              child: Image.network(
                widget.onlinePodcast.image,
                height: 40.0,
                width: 40.0,
                fit: BoxFit.fitWidth,
                alignment: Alignment.center,
              ),
            ),
            title: Text(widget.onlinePodcast.title),
            subtitle: Text(widget.onlinePodcast.publisher),
            trailing: 
            Row(
              mainAxisAlignment: MainAxisAlignment.start,
              mainAxisSize: MainAxisSize.min,
              children: <Widget>[
                 Icon(_showDes ? Icons.keyboard_arrow_up : Icons.keyboard_arrow_down),
                 Padding(padding: EdgeInsets.only(right: 10.0)),
                 !_issubscribe
                ? !_adding
                    ? OutlineButton(
                        child:
                            Text('Subscribe', style: TextStyle(color: Colors.blue)),
                        onPressed: () {
                          importOmpl.rssTitle = widget.onlinePodcast.title;
                          savePodcast(widget.onlinePodcast.rss);
                        })
                    : OutlineButton(
                        child: SizedBox(
                            height: 20,
                            width: 20,
                            child: CircularProgressIndicator(
                              strokeWidth: 2,
                              valueColor: AlwaysStoppedAnimation(Colors.blue),
                            )),
                        onPressed: () {},
                      )
                : OutlineButton(child: Text('Subscribe'), onPressed: (){}),
              ],
            ),
          ),
          _showDes ? Container(
            alignment: Alignment.centerLeft,
            decoration: BoxDecoration(
                color: Colors.grey[300],
                borderRadius: BorderRadius.all(Radius.circular(10.0))
            ),
            margin: EdgeInsets.only(left: 70, right: 50),
            padding: EdgeInsets.all(10.0),
            child: Text(widget.onlinePodcast.description, maxLines: 3, overflow: TextOverflow.ellipsis,),
          ) : Center(),
        ],
      ),
    );
  }
}