import 'package:flutter/material.dart';

class TusYayilmasiEngelleWidget extends StatefulWidget {
  final Widget child;
  final bool Function(KeyEvent event) shouldBlockKey;

  const TusYayilmasiEngelleWidget({
    super.key,
    required this.child,
    required this.shouldBlockKey,
  });

  @override
  _TusYayilmasiEngelleWidgetState createState() => _TusYayilmasiEngelleWidgetState();
}

class _TusYayilmasiEngelleWidgetState extends State<TusYayilmasiEngelleWidget> with WidgetsBindingObserver {
  late FocusNode _focusNode;

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addObserver(this);
     _focusNode = FocusNode(canRequestFocus: true, skipTraversal: true,);
    _forceFocus();
  }

  @override
  void dispose() {
    WidgetsBinding.instance.removeObserver(this);
    _focusNode.dispose();
    super.dispose();
  }

  @override
  void didChangeAppLifecycleState(AppLifecycleState state) {
    if (state == AppLifecycleState.resumed) {
      Future.delayed(const Duration(milliseconds: 0), _forceFocus);
    }
  }

  void _forceFocus() {
    WidgetsBinding.instance.addPostFrameCallback((_) {
      if (!mounted || _focusNode.hasFocus) return;
      FocusScope.of(context).unfocus();
      FocusScope.of(context).requestFocus(_focusNode);
      _focusNode.requestFocus();
    });
  }

  KeyEventResult _handleKeyEvent(FocusNode node, KeyEvent event) {
    // int eventHash = event.hashCode; // Olayın benzersiz hash kodu
    // if (_lastEventHash == eventHash) {
    //   return KeyEventResult.handled; // Aynı olay tekrar işlenmesin
    // }
    // _lastEventHash = eventHash;

    if (widget.shouldBlockKey(event)) {
      return KeyEventResult.handled;
    }
    return KeyEventResult.ignored;
  }

  @override
  Widget build(BuildContext context) {
    return  Focus(
        focusNode: _focusNode,
        autofocus: true,
        canRequestFocus: true,
        skipTraversal: true,
        onKeyEvent: _handleKeyEvent,
        child: widget.child,
      
    );
  }
}