PMU_Gerimovich_PIbd-32/lib/domain/models/stock.dart

part of '../../presentation/home_page/home_page.dart';

class Stock {
  final String? name;
  final double? price;
  final String? imageUrl;
  final StockCategory? category;

  Stock({
    this.name, this.price, this.imageUrl, this.category,
  });
}

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

  @override
  State<StocksWidget> createState() => _StocksWidgetState();
}

class _StocksWidgetState extends State<StocksWidget> {
  final List<double> prices = [52.90, 77, 89, 111, 135.43, 157.50, 111.11];

  Future<void> _fetchNewPrice() async {
    await Future.delayed(const Duration(seconds: 1));
    setState(() {
      prices.add(prices.last + (prices.last * 0.1));
      //if (prices.length > 5) {
      //  prices.removeAt(0);
      //}
    });
  }

  @override
  Widget build(BuildContext context) {
    final stocks = [
      Stock(
          name: 'Алроса',
          price: 52.90,
          imageUrl:
          'https://data.cbonds.info/organisations_logos/18/1617957662ALROSA_Rus_COLOUR_RGB.jpg',
          category: StockCategory.mining),
      Stock(
          name: 'Газпром',
          price: 135.431111,
          imageUrl: 'https://data.cbonds.info/organisations_logos/21/21.png',
          category: StockCategory.oilgas),
      Stock(
          name: 'Сбербанк',
          imageUrl:
          'https://data.cbonds.info/organisations_logos/313/1615279834sberbank__2-01.png',
          category: StockCategory.finance),
      Stock(),
    ];

    return Center(
      child: SingleChildScrollView(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            SizedBox(
              height: 300,
              child: LineChart(
                LineChartData(
                  lineBarsData: [
                    LineChartBarData(
                      spots: prices
                          .asMap()
                          .map((index, price) => MapEntry(index.toDouble(), FlSpot(index.toDouble(), price)))
                          .values
                          .toList(),
                      isCurved: true,
                      color: Colors.blue,
                      barWidth: 3,
                      dotData: const FlDotData(show: false),
                    ),
                  ],
                ),
              ),
            ),
            const SizedBox(height: 20),
            ElevatedButton(
              onPressed: _fetchNewPrice,
              child: const Text('Добавить новую цену'),
            ),
            const SizedBox(height: 20),
            // ...stocks.map((e) => StockCard(stock: e)),
            ...stocks.map((e) => StockCard.fromData(e,
                onLike: () => _showSnackBar(context),)).toList(),   // .toList()
          ],
        ),
      ),
    );
  }

  void _showSnackBar(BuildContext context) {
    WidgetsBinding.instance.addPostFrameCallback((_){
      ScaffoldMessenger.of(context).showSnackBar(SnackBar(
        content: Text(
          'Stock liked',
          style: Theme.of(context).textTheme.bodyLarge,
        ),
        backgroundColor: Color(0xFFFFFFFF),
        duration: const Duration(seconds: 1),
      ));
    });
  }
}

class StockCard extends StatefulWidget {
  // final Stock stock;

  final String? name;
  final double? price;
  final String? imageUrl;
  final StockCategory? category;
  final VoidCallback? onLike;

  const StockCard({super.key, this.name, this.price, this.imageUrl, this.category, this.onLike});

  factory StockCard.fromData(Stock data, {VoidCallback? onLike}) => StockCard(
    name: data.name,
    price: data.price,
    imageUrl: data.imageUrl,
    category: data.category,
    onLike: onLike,
  );


  @override
  State<StockCard> createState() => _StockCardState();
}

class _StockCardState extends State<StockCard> {
  bool isLiked = false;

  @override
  Widget build(BuildContext context) {
    return GestureDetector(
        onTap: () {
          Navigator.push(
            context,
            MaterialPageRoute(
              builder: (context) => DetailPage(name: widget.name, imageUrl: widget.imageUrl),
            ),
          );
        },
    child: Card(
      margin: const EdgeInsets.all(8.5),
      child: Padding(
        padding: const EdgeInsets.all(20),
        child: Row(
          children: [
            Image.network(
              widget.imageUrl ?? 'https://img.freepik.com/premium-vector/vector-illustration-about-concept-of-no-result-data-or-document-or-file-not-found_675567-5734.jpg',
              width: 85,
              height: 85,
            ),
            const SizedBox(width: 20),
            Expanded(
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text(
                    widget.name ?? '',
                    style: Theme.of(context).textTheme.headlineSmall,
                  ),
                  Text(
                    '${widget.price?.toStringAsFixed(2)} р',
                    style: Theme.of(context).textTheme.bodyLarge,
                  ),
                  Text(
                    widget.category?.name ?? '',
                    style: Theme.of(context).textTheme.bodySmall,
                  ),
                ],
              ),
            ),
            GestureDetector(
              onTap: () {
                setState(() {
                  isLiked = !isLiked;
                });
                if(isLiked) widget.onLike?.call();
              },
              child: Icon(
                Icons.favorite,
                color: isLiked ? Colors.red : Colors.black,
                size: 30.0,
              ),
            ),
          ],
        ),
      ),
    )
    );
  }
}