import 'package:flutter/material.dart';

import 'devices.dart';

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

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

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        // This is the theme of your application.
        //
        // TRY THIS: Try running your application with "flutter run". You'll see
        // the application has a blue toolbar. Then, without quitting the app,
        // try changing the seedColor in the colorScheme below to Colors.green
        // and then invoke "hot reload" (save your changes or press the "hot
        // reload" button in a Flutter-supported IDE, or press "r" if you used
        // the command line to start the app).
        //
        // Notice that the counter didn't reset back to zero; the application
        // state is not lost during the reload. To reset the state, use hot
        // restart instead.
        //
        // This works for code too, not just values: Most code changes can be
        // tested with just a hot reload.
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

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

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return FutureBuilder<List<Category>>(
        future: Category.fetch("smart.gavania.de"),
        builder: (context, AsyncSnapshot<List<Category>> categories) {
          if (!categories.hasData) {
            return const Scaffold();
          }

          return Scaffold(
              appBar: AppBar(
                // TRY THIS: Try changing the color here to a specific color (to
                // Colors.amber, perhaps?) and trigger a hot reload to see the AppBar
                // change color while the other colors stay the same.
                backgroundColor: Theme.of(context).colorScheme.inversePrimary,
                // Here we take the value from the MyHomePage object that was created by
                // the App.build method, and use it to set our appbar title.
                title: Text(widget.title),
              ),
              body: Center(
                // Center is a layout widget. It takes a single child and positions it
                // in the middle of the parent.
                child: Column(
                  // Column is also a layout widget. It takes a list of children and
                  // arranges them vertically. By default, it sizes itself to fit its
                  // children horizontally, and tries to be as tall as its parent.
                  //
                  // Column has various properties to control how it sizes itself and
                  // how it positions its children. Here we use mainAxisAlignment to
                  // center the children vertically; the main axis here is the vertical
                  // axis because Columns are vertical (the cross axis would be
                  // horizontal).
                  //
                  // TRY THIS: Invoke "debug painting" (choose the "Toggle Debug Paint"
                  // action in the IDE, or press "p" in the console), to see the
                  // wireframe for each widget.
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: categories.data!
                      .map((category) => CategoryWidget(category: category))
                      .toList(),
                ),
              ));
        });
  }
}