import "dart:io";
import "package:flutter/material.dart";
import "package:camera/camera.dart";

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

class MyApp extends StatelessWidget {
	const MyApp({super.key});
	@override Widget build(BuildContext context) => const MaterialApp(home: MyHomePage());
}

class MyHomePage extends StatefulWidget {
	const MyHomePage({super.key});
	@override State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
	bool loading = true;
	bool recording = true;
	late CameraController camera_cont;

	@override void dispose() {
		camera_cont.dispose();
		super.dispose();
	}

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

	init_camera() async {
		final cameras = await availableCameras();
		camera_cont = CameraController(cameras.firstWhere((camera) => camera.lensDirection == CameraLensDirection.back), ResolutionPreset.ultraHigh);
		await camera_cont.initialize();
		setState(() => loading = false);
		await camera_cont.prepareForVideoRecording();
		await camera_cont.startVideoRecording();
		for(int i = 0; i < 100; i++)
		{
			await Future.delayed(const Duration(milliseconds: 100));
			await camera_cont.pauseVideoRecording();
			setState(() => recording = false);
			await Future.delayed(const Duration(milliseconds: 100));
			await camera_cont.resumeVideoRecording();
			setState(() => recording = true);
		}
	}

	@override Widget build(BuildContext context)
	{
		if(loading)return const Center(child: CircularProgressIndicator());
		else return Stack(
			alignment: Alignment.center,
			children: [
				CameraPreview(camera_cont),
				Icon(recording ? Icons.play_circle : Icons.pause_circle),
			],
		);
	}
}