import UIKit
import Flutter
// The following library connects plugins with iOS platform code to this app.
//import FlutterPluginRegistrant

@UIApplicationMain
class AppDelegate: FlutterAppDelegate { // More on the FlutterAppDelegate.
    let engines = FlutterEngineGroup(name: "ios_fultter_double", project: nil)

  override func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    // Runs the default Dart entrypoint with a default Flutter route.
//    flutterEngine.run();
    // Connects plugins with iOS platform code to this app.
//    GeneratedPluginRegistrant.register(with: self.flutterEngine);
    return super.application(application, didFinishLaunchingWithOptions: launchOptions);
  }
}


// Copyright 2021 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import Flutter
import FlutterPluginRegistrant
import Foundation

/// A FlutterViewController intended for the MyApp widget in the Flutter module.
///
/// This view controller maintains a connection to the Flutter instance and syncs it with the
/// datamodel.  In practice you should override the other init methods or switch to composition
/// instead of inheritence.
class InteractionViewController: FlutterViewController {
    private var channel: FlutterMethodChannel?

    init(withEntrypoint entryPoint: String?) {
        let appDelegate: AppDelegate = UIApplication.shared.delegate as! AppDelegate
        let newEngine = appDelegate.engines.makeEngine(withEntrypoint: entryPoint, libraryURI: nil)
        GeneratedPluginRegistrant.register(with: newEngine)
        super.init(engine: newEngine, nibName: nil, bundle: nil)

    }

   

    required init(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }


    override func viewDidLoad() {
        super.viewDidLoad()
        channel = FlutterMethodChannel(
            name: "ios_fultter_double", binaryMessenger: engine!.binaryMessenger)
        
        let navController = navigationController!
        channel!.setMethodCallHandler { (call: FlutterMethodCall, result: @escaping FlutterResult) in
            if call.method == "incrementCount" {
                result(nil)
            } else if call.method == "next" {
                navController.pushViewController(FlutterViewController(), animated: true)
                result(nil)
            } else {
                result(FlutterMethodNotImplemented)
            }
        }
    }
}

// Copyright 2021 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

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

void main() => runApp(const MyApp(color: Colors.blue));

@pragma('vm:entry-point')
void topMain() => runApp(const MyApp(color: Colors.green));

@pragma('vm:entry-point')
void bottomMain() => runApp(const MyApp(color: Colors.purple));

class MyApp extends StatelessWidget {
  const MyApp({super.key, required this.color});

  final MaterialColor color;

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorSchemeSeed: color,
        useMaterial3: true,
        appBarTheme: AppBarTheme(
          backgroundColor: color,
          foregroundColor: Colors.white,
          elevation: 8,
        ),
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

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

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

class _MyHomePageState extends State<MyHomePage> {
  int? _counter = 0;
  late MethodChannel _channel;

  @override
  void initState() {
    super.initState();
    _channel = const MethodChannel('ios_fultter_double');
    _channel.setMethodCallHandler((call) async {
      if (call.method == "setCount") {
        // A notification that the host platform's data model has been updated.
        setState(() {
          _counter = call.arguments as int?;
        });
      } else {
        throw Exception('not implemented ${call.method}');
      }
    });
  }

  void _incrementCounter() {
    // Mutations to the data model are forwarded to the host platform.
    _channel.invokeMethod<void>("incrementCount", _counter);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            const Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headlineMedium,
            ),
            TextButton(
              onPressed: _incrementCounter,
              child: const Text('Add'),
            ),
            TextButton(
              onPressed: () {
                _channel.invokeMethod<void>("next", _counter);
              },
              child: const Text('Next'),
            ),
            ElevatedButton(
              onPressed: () async {
                // Use the url_launcher plugin to open the Flutter docs in
                // a browser.
                final url = Uri.parse('https://flutter.dev/docs');
              },
              child: const Text('Open Flutter Doc11s'),
            ),
          ],
        ),
      ),
    );
  }
}