import 'dart:io';

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

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(const MyApp());
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(title: 'Flutter Demo', home: CameraPage());
  }
}

class CameraPage extends StatefulWidget {

  @override
  State<CameraPage> createState() => _CameraPageState();
}

class _CameraPageState extends State<CameraPage> {
  late Future initializer;
  late CameraController controller;
  bool progressing = false;

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

    initializer = initCamera();
  }

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

  Future<void> initCamera() async {
    var camera = await availableCameras();
    controller = CameraController(
      camera.first,
      // Set to ResolutionPreset.high. Do NOT set it to ResolutionPreset.max because for some phones does NOT work.
      ResolutionPreset.ultraHigh,
      enableAudio: false,
      imageFormatGroup: Platform.isAndroid
          ? ImageFormatGroup.nv21
          : ImageFormatGroup.bgra8888,
    );
    await controller.initialize();
    await onFlashChange(FlashMode.always);
  }

  Future<void> _takePic() async {
    setState(() {
      progressing = true;
    });

    print("pausePreview");
    await controller.pausePreview();
    print("takePicture");
    final file = await controller.takePicture();
    print("resumePreview");
    await controller.resumePreview();

    print("PATH OF PICTURE: " + file.path);

    setState(() {
      progressing = false;
    });
  }

  Future<void> onFlashChange(FlashMode mode) async {
    print("SETTING FLASH MODE");
    await controller.setFlashMode(mode);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text("TEST")),
      body: FutureBuilder(
        future: initializer,
        builder: (context, snap) {
          if (snap.connectionState != ConnectionState.done) {
            return Center(child: CircularProgressIndicator());
          }

          return Column(
            children: [
              Container(height: 400, child: CameraPreview(controller)),
              OutlinedButton(onPressed: _takePic, child: Text("Click")),
              if (progressing) CircularProgressIndicator(),
            ],
          );
        },
      ),
    );
  }
}

lucagiordano@Lucas-MacBook-Pro test_app % flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.35.5, on macOS 15.3.2 24D81 darwin-arm64, locale en-US)
[!] Android toolchain - develop for Android devices (Android SDK version 36.1.0)
    ! Some Android licenses not accepted. To resolve this, run: flutter doctor --android-licenses
[✓] Xcode - develop for iOS and macOS (Xcode 16.4)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2025.1)
[✓] VS Code (version 1.104.2)
[✓] Connected device (5 available)
    ! Error: Browsing on the local area network for Hello Bob. Ensure the device is unlocked and attached with a cable or associated with the same local area network as this Mac.
      The device must be opted into Developer Mode to connect wirelessly. (code -27)
[✓] Network resources

! Doctor found issues in 1 category.