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meincantor-app/lib/news.dart
Denys Konovalov ba75ce8d6d ==1.0.0==
- removed obsolete deps
- fixed many issues
- improved features
- added:
  * favourites
  * account console
  * push notifications
  * background sync
  * improved settings
2021-12-19 22:20:56 +01:00

260 lines
13 KiB
Dart

import 'dart:convert';
import 'package:meincantor/networking.dart';
import 'package:flutter/material.dart';
import 'package:flutter_markdown/flutter_markdown.dart';
import 'package:http/http.dart' as http;
import 'package:material_design_icons_flutter/material_design_icons_flutter.dart';
import 'package:shared_preferences/shared_preferences.dart';
Future<List> getNewsRead() async {
SharedPreferences prefs = await SharedPreferences.getInstance();
String? newsReadString = prefs.getString("newsRead");
List<dynamic> newsRead;
if (newsReadString == null ||
(jsonDecode(newsReadString) as List<dynamic>).isEmpty) {
newsRead = [];
} else {
newsRead = jsonDecode(newsReadString) as List<dynamic>;
}
return newsRead;
}
class News extends StatefulWidget {
const News({Key? key}) : super(key: key);
@override
State<StatefulWidget> createState() => _NewsState();
}
class _NewsState extends State<News> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text("Aktuelles"),
centerTitle: true,
),
body: LayoutBuilder(builder: (context, constraints) {
double widgetWidth = constraints.maxWidth;
int factor;
if (widgetWidth <= 600) {
factor = 1;
} else if (widgetWidth <= 1400) {
factor = 2;
} else if (widgetWidth <= 2000) {
factor = 3;
} else {
factor = 1;
}
return Center(
heightFactor: 1,
child: Container(
constraints: BoxConstraints(
maxWidth: MediaQuery.of(context).size.width / factor,
),
child: FutureBuilder<http.Response>(
future: getNews(),
builder: (context, snapshot) {
if (snapshot.hasData) {
int statusCode = snapshot.data!.statusCode;
if (statusCode == 200) {
String data = utf8.decode(snapshot.data!.bodyBytes);
List articles = jsonDecode(data)["data"];
List<Widget> articleTiles = [];
for (var element in articles) {
int id = element["id"];
element = element["attributes"];
Color color = Colors.white70;
Widget card = FutureBuilder(
future: getNewsRead(),
builder: (context, snapshot) {
if (snapshot.hasData) {
List<dynamic> readList =
snapshot.data! as List<dynamic>;
if (!readList.contains(id)) {
return GestureDetector(
onTap: () async {
SharedPreferences prefs =
await SharedPreferences.getInstance();
Navigator.push(
context,
MaterialPageRoute(
builder: (context) =>
Article.fromData(
element["title"],
element["content"],
element["author"],
element["publish_date"])
.widget),
);
readList.add(id);
prefs.setString(
"newsRead", jsonEncode(readList));
setState(() {
color = Colors.transparent;
});
},
child: Card(
color: color,
child: Padding(
padding: const EdgeInsets.fromLTRB(
10, 10, 10, 10),
child: FutureBuilder(
future: Future.delayed(
const Duration(seconds: 0)),
builder: (context, snapshot) {
if (element["summary"] != null &&
(element["summary"] as String)
.isNotEmpty) {
return ListTile(
title: Text(element["title"],
style: const TextStyle(
fontWeight:
FontWeight.bold)),
subtitle: Text(
element["summary"],
overflow:
TextOverflow.ellipsis,
maxLines: 2,
softWrap: true,
),
trailing: Text(
"${DateTime.parse(element["publish_date"]).day.toString()}.${DateTime.parse(element["publish_date"]).month.toString()}.${DateTime.parse(element["publish_date"]).year.toString()}"),
);
} else {
return ListTile(
title: Text(element["title"],
style: const TextStyle(
fontWeight:
FontWeight.bold)),
trailing: Text(
"${DateTime.parse(element["publish_date"]).day.toString()}.${DateTime.parse(element["publish_date"]).month.toString()}.${DateTime.parse(element["publish_date"]).year.toString()}"),
);
}
},
)),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15),
)),
);
} else {
return GestureDetector(
onTap: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) =>
Article.fromData(
element["title"],
element["content"],
element["author"],
element["publish_date"])
.widget),
);
},
child: Card(
child: Padding(
padding: const EdgeInsets.fromLTRB(
10, 10, 10, 10),
child: FutureBuilder(
future: Future.delayed(
const Duration(seconds: 0)),
builder: (context, snapshot) {
if (element["summary"] != null &&
(element["summary"] as String)
.isNotEmpty) {
return ListTile(
title: Text(element["title"],
style: const TextStyle(
fontWeight:
FontWeight.bold)),
subtitle: Text(
element["summary"],
overflow:
TextOverflow.ellipsis,
maxLines: 2,
softWrap: true,
),
trailing: Text(
"${DateTime.parse(element["publish_date"]).day.toString()}.${DateTime.parse(element["publish_date"]).month.toString()}.${DateTime.parse(element["publish_date"]).year.toString()}"),
);
} else {
return ListTile(
title: Text(element["title"],
style: const TextStyle(
fontWeight:
FontWeight.bold)),
trailing: Text(
"${DateTime.parse(element["publish_date"]).day.toString()}.${DateTime.parse(element["publish_date"]).month.toString()}.${DateTime.parse(element["publish_date"]).year.toString()}"),
);
}
},
)),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15),
)),
);
}
} else {
return const LinearProgressIndicator();
}
},
);
articleTiles.add(card);
}
return ListView(
children: articleTiles.reversed.toList(),
);
} else {
return (const Center(
child:
Text("Uups... Irgendwas ist schief gelaufen")));
}
} else {
return (const Center(child: CircularProgressIndicator()));
}
},
),
),
);
}));
}
}
class Article {
Widget widget;
//const Article({Key? key}) : super(key: key);
Article({required this.widget});
factory Article.fromData(
String title, String content, String author, String publishDate) {
return Article(
widget: Scaffold(
appBar: AppBar(
title: SingleChildScrollView(
scrollDirection: Axis.vertical,
child: SingleChildScrollView(
scrollDirection: Axis.horizontal, child: Text(title)),
),
centerTitle: true,
),
body: ListView(
padding: const EdgeInsets.fromLTRB(15, 15, 15, 15),
children: [
ListTile(
leading: const Icon(MdiIcons.accountOutline),
title: Text(author),
),
ListTile(
leading: const Icon(MdiIcons.calendarOutline),
title: Text(
"${DateTime.parse(publishDate).day.toString()}.${DateTime.parse(publishDate).month.toString()}.${DateTime.parse(publishDate).year.toString()}"),
),
MarkdownBody(data: content)
],
)));
}
}