PIbd-31_Lobashov.I.D._Mobile_Device_Programming/lib/main.dart

import 'package:flutter/material.dart';
import 'car.dart';
import 'CarEnums.dart';

void main() {
  runApp(const MyApp());
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Cars',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.blue),
        useMaterial3: true,
      ),
      home: const HomeScreen(),
    );
  }
}
class HomeScreen extends StatelessWidget {
  const HomeScreen({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Car Showroom'),
      ),
      body: Center(
        child: InkWell(
          onTap: () {
            Navigator.push(
              context,
              MaterialPageRoute(
                builder: (_) => const CarListScreen(),
              ),
            );
          },
          borderRadius: BorderRadius.circular(30),
          child: Container(
            padding: const EdgeInsets.symmetric(horizontal: 40, vertical: 20),
            decoration: BoxDecoration(
              gradient: const LinearGradient(
                colors: [Colors.lightBlue, Colors.blue],
                begin: Alignment.topLeft,
                end: Alignment.bottomRight,
              ),
              borderRadius: BorderRadius.circular(30),
              boxShadow: [
                BoxShadow(
                  color: Colors.black.withOpacity(0.2),
                  blurRadius: 5,
                  offset: const Offset(2, 2),
                ),
              ],
            ),
            child: const Text(
              'Show Car List',
              style: TextStyle(
                fontSize: 28,
                fontWeight: FontWeight.bold,
                color: Colors.white,
              ),
            ),
          ),
        ),
      ),
    );
  }
}



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

  @override
  _CarListScreenState createState() => _CarListScreenState();
}

class _CarListScreenState extends State<CarListScreen> {
  late Future<List<Car>> _carsFuture;

  @override
  void initState() {
    super.initState();
    _carsFuture = _fetchCars();
  }

  //Generics
  Future<List<Car>> _fetchCars() async {
    //Future
    await Future.delayed(const Duration(seconds: 2));

    final cars = [
      Car(
        brand: CarBrand.Toyota,
        model: CarModel.Corolla,
        year: 2021,
        fuelType: FuelType.Petrol,
        description: 'Норм тачка',
      ),
      Car(
        brand: CarBrand.Tesla,
        model: CarModel.ModelS,
        year: 2023,
        fuelType: FuelType.Electric,
        description: 'Самая дорогая тачка',
      ),
      Car(
        brand: CarBrand.BMW,
        model: CarModel.X5,
        year: 2022,
        fuelType: FuelType.Hybrid,
        description: 'Луксури машинка',
      ),
      Car(
        brand: CarBrand.Mercedes,
        model: CarModel.CClass,
        year: 2020,
        fuelType: FuelType.Diesel,
        description: 'Мощная машинка',
      ),
    ];

    // Loops
    for (var car in cars) {
      print(car.printCar());
    }

    return cars;
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Car List'),
      ),
      body: FutureBuilder<List<Car>>(
        future: _carsFuture,
        builder: (context, snapshot) {
          if (snapshot.connectionState == ConnectionState.waiting) {
            return const Center(child: CircularProgressIndicator());
          } else if (snapshot.hasError) {
            return Center(child: Text('Error: ${snapshot.error}'));
          } else if (!snapshot.hasData || snapshot.data!.isEmpty) {
            return const Center(child: Text('No cars found.'));
          } else {
            final cars = snapshot.data!;
            return ListView.builder(
              itemCount: cars.length,
              itemBuilder: (context, index) {
                return ListTile(
                  title: Text(
                    cars[index].brand.toString().split('.').last,
                    style: const TextStyle(fontSize: 34),
                  ),
                  subtitle: Text(
                    '${cars[index].model.toString().split('.').last} - ${cars[index].year}\n${cars[index].description}',
                    style: const TextStyle(fontSize: 26),
                  ),
                );
              },
            );
          }
        },
      ),
    );
  }
}