main.dart

import 'package:flutter/material.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Web3 News',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        colorSchemeSeed: Colors.blue,
      ),
      home: const NewsPage(),
    );
  }
}

class NewsPage extends StatefulWidget {
  const NewsPage({super.key});

  @override
  State<NewsPage> createState() => _NewsPageState();
}

class _NewsPageState extends State<NewsPage> with TickerProviderStateMixin {
  late TabController _tabController;

  @override
  void initState() {
    super.initState();
    _tabController = TabController(length: 5, vsync: this);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Web3 News'),
        bottom: TabBar(
          controller: _tabController,
          tabs: const [
            Tab(text: 'All'),
            Tab(text: 'DeFi'),
            Tab(text: 'NFT'),
            Tab(text: 'DAO'),
            Tab(text: 'Metaverse'),
          ],
          onTap: (index) {
            setState(() {
              // update the content based on the selected tab
              _tabController.animateTo(index);
            });
          },
        ),
      ),
      body: TabBarView(
        controller: _tabController,
        children: [
          _buildCircleContent('All', [
            _buildNewsItem('Bitcoin Surges to New High'),
            _buildNewsItem('Ethereum 2.0 Launches Successfully'),
            _buildNewsItem('Dogecoin Becomes Top 10 Cryptocurrency'),
          ]),
          _buildCircleContent('DeFi', [
            _buildNewsItem('Uniswap V3 Launches with Liquidity Rewards'),
            _buildNewsItem('Aave Launches New Lending Platform'),
            _buildNewsItem('MakerDAO Announces New Governance Model'),
          ]),
          _buildCircleContent('NFT', [
            _buildNewsItem('OpenSea Raises $100M in Funding'),
            _buildNewsItem('CryptoPunks Sells for $1M'),
            _buildNewsItem('SuperRare Launches New NFT Marketplace'),
          ]),
          _buildCircleContent('DAO', [
            _buildNewsItem('DAOhaus Launches New Governance Platform'),
            _buildNewsItem('MetaDAO Announces New Funding Round'),
            _buildNewsItem('DAOstack Raises $2M in Funding'),
          ]),
          _buildCircleContent('Metaverse', [
            _buildNewsItem('Decentraland Launches New Land Sales'),
            _buildNewsItem('The Sandbox Raises $93M in Funding'),
            _buildNewsItem('Meta Announces New Metaverse Platform'),
          ]),
        ],
      ),
    );
  }

  Widget _buildCircleContent(String title, List<Widget> newsItems) {
    return ListView.builder(
      itemCount: newsItems.length,
      itemBuilder: (context, index) {
        return newsItems[index];
      },
    );
  }

  Widget _buildNewsItem(String title) {
    return Card(
      child: ListTile(
        title: Text(title),
        subtitle: const Text('This is a sample news item'),
      ),
    );
  }
}