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: 'Trading Bot',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        colorSchemeSeed: Colors.blue,
      ),
      home: const MyHomePage(title: 'Trading Bot'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  final String title;

  const MyHomePage({
    super.key,
    required this.title,
  });

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _totalInvestment = 0;
  int _totalProfit = 0;
  final List<Stock> _stocks = [
    Stock(symbol: 'AAPL', quantity: 0),
    Stock(symbol: 'GOOG', quantity: 0),
    Stock(symbol: 'MSFT', quantity: 0),
    Stock(symbol: 'AMZN', quantity: 0),
  ];

  void _buyStock(Stock stock) {
    setState(() {
      stock.quantity++;
      _totalInvestment += 100; // assuming the stock price is $100
    });
  }

  void _sellStock(Stock stock) {
    setState(() {
      stock.quantity--;
      _totalProfit += 100; // assuming the stock price is $100
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Column(
        children: [
          Expanded(
            child: ListView.builder(
              itemCount: _stocks.length,
              itemBuilder: (context, index) {
                return ListTile(
                  title: Text(_stocks[index].symbol),
                  subtitle: Text('Quantity: ${_stocks[index].quantity}'),
                  trailing: Row(
                    mainAxisSize: MainAxisSize.min,
                    children: [
                      ElevatedButton(
                        onPressed: () => _buyStock(_stocks[index]),
                        child: const Text('Buy'),
                      ),
                      const SizedBox(width: 10),
                      ElevatedButton(
                        onPressed: () => _sellStock(_stocks[index]),
                        child: const Text('Sell'),
                      ),
                    ],
                  ),
                );
              },
            ),
          ),
          Padding(
            padding: const EdgeInsets.all(20),
            child: Column(
              children: [
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    const Text('Total Investment: '),
                    Text('\$$_totalInvestment'),
                  ],
                ),
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    const Text('Total Profit: '),
                    Text('\$$_totalProfit'),
                  ],
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }
}

class Stock {
  final String symbol;
  int quantity;

  Stock({
    required this.symbol,
    this.quantity = 0,
  });
}