import 'dart:math';

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';

main() {
  runApp(MainApp());
}

class MainApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: MainPage(),
      ),
    );
  }
}

class MainPage extends StatefulWidget {
  @override
  _MainPageState createState() => _MainPageState();
}

class _MainPageState extends State<MainPage> {
  Color currentColor = Colors.blue;
  var height = 150;
  var width = 150;
  var borderRadius = 10;
  var alignment = Alignment.center;
  var icon = Icons.home;
  var backgroundColor = Colors.white;

  @override
  void initState() {
    super.initState();
    _init();
  }

  _init() async {
    for (int i = 0; i < 100; i++) {
      await Future.delayed(Duration(seconds: 1));
      _randomizeParameters();
    }
  }

  _randomizeParameters() {
    setState(() {
      height = Random().nextInt(100) + 80;
      width = Random().nextInt(100) + 80;
      var randomIndex = Random().nextInt(colors.length);
      currentColor = colors[randomIndex];
      backgroundColor = backgroundColors[randomIndex];
      borderRadius = Random().nextInt(50) + 5;
      var currentAlignment = Random().nextInt(alignments.length);
      alignment = alignments[currentAlignment];
      var iconsIndex = Random().nextInt(icons.length);
      icon = icons[iconsIndex];
    });
  }

  @override
  Widget build(BuildContext context) {
    return AnimatedContainer(
      duration: Duration(milliseconds: 700),
      alignment: alignment,
      color: backgroundColor,
      child: AnimatedPadding(
        duration: Duration(milliseconds: 700),
        padding: EdgeInsets.all(
            height > width ? height.toDouble() : width.toDouble()),
        child: AnimatedContainer(
          duration: Duration(milliseconds: 700),
          height: height.toDouble(),
          width: width.toDouble(),
          alignment: alignment,
          curve: Curves.easeInCubic,
          padding: EdgeInsets.all(height > width ? width / 10 : height / 10),
          transform: Matrix4.rotationZ(height.toDouble() / 30),
          child: Padding(
            padding: const EdgeInsets.all(16.0),
            child: Icon(
              Icons.ac_unit,
              color: Colors.white,
              size: 30,
            ),
          ),
          decoration: BoxDecoration(
              color: currentColor,
              borderRadius: BorderRadius.circular(borderRadius.toDouble())),
        ),
      ),
    );
  }
}

var colors = [
  Colors.blue,
  Colors.red,
  Colors.pink,
  Colors.green,
  Colors.yellow,
  Colors.black,
  Colors.indigo
];

var backgroundColors = [
  Colors.white,
  Colors.black12,
  Colors.grey,
  Colors.cyanAccent,
  Colors.lightBlueAccent,
  Colors.purpleAccent,
  Colors.yellowAccent
];

var icons = [
  Icons.map,
  Icons.add,
  Icons.home,
  Icons.person_outline,
  Icons.extension,
  Icons.ac_unit,
  Icons.add_a_photo
];
var alignments = [
  Alignment.center,
  Alignment.centerLeft,
  Alignment.centerRight,
  Alignment.bottomCenter,
  Alignment.bottomLeft,
  Alignment.bottomRight,
  Alignment.topCenter,
  Alignment.topRight,
  Alignment.topLeft,
];