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

void main()
{
	runApp(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 = false;
	late CameraController camera_cont;
	String? file;

	@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, enableAudio: false);
		await camera_cont.initialize();
		setState(() => loading = false);
		await camera_cont.prepareForVideoRecording();
	}

	void record() async
	{
		await camera_cont.startVideoRecording();
		setState(() => recording = true);
	}

	void stop() async
	{
		final f = await camera_cont.stopVideoRecording();
		setState(() => file = f.path);
	}

	@override Widget build(BuildContext context)
	{
		if(loading)return const Center(child: CircularProgressIndicator());
		if(file != null)return VideoPlayer(VideoPlayerController.file(File(file!))..initialize()..setLooping(true)..play());
		return Stack(
			alignment: Alignment.bottomLeft,
			children: [
				Stack(
					alignment: Alignment.bottomCenter,
					children: [
						CameraPreview(camera_cont),
						if(recording)FilledButton(onPressed: stop, child: const Text("Stop"))
						else FilledButton(onPressed: record, child: const Text("Record")),
					],
				),
			],
		);
	}
}