import 'package:flutter/cupertino.dart';

/// Flutter code sample for [CupertinoActionSheet].

void main() => runApp(const ActionSheetApp());

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

  @override
  Widget build(BuildContext context) {
    return const CupertinoApp(
      home: ActionSheetExample(),
    );
  }
}

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

  // This shows a CupertinoModalPopup which hosts a CupertinoActionSheet.
  void _showActionSheet(BuildContext context) {
    showCupertinoModalPopup<void>(
      context: context,
      builder: (BuildContext context) => CupertinoActionSheet(
        title: const Text('Title'),
        message: const Text('Message'),
        actions: <CupertinoActionSheetAction>[
          CupertinoActionSheetAction(
            /// This parameter indicates the action would be a default
            /// default behavior, turns the action's text to bold text.
            isDefaultAction: true,
            onPressed: () {
              Navigator.pop(context);
            },
            child: const Text('Default Action'),
          ),
          CupertinoActionSheetAction(
            onPressed: () {
              Navigator.pop(context);
            },
            child: const Text('Action'),
          ),
          CustomBottomSheetAction(
            /// This parameter indicates the action would perform
            /// a destructive action such as delete or exit and turns
            /// the action's text color to red.
            isDestructiveAction: true,
            onPressed: () {
              Navigator.pop(context);
            },
            child: const Text('Destructive Action'),
          ),
        ],
        cancelButton: CustomBottomSheetAction(
          onPressed: () {
            print('Cancel');
            Navigator.pop(context);
          },
          child: const Text('Cancel'),
        ),
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    return CupertinoPageScaffold(
      navigationBar: const CupertinoNavigationBar(
        middle: Text('CupertinoActionSheet Sample'),
      ),
      child: Center(
        child: CupertinoButton(
          onPressed: () => _showActionSheet(context),
          child: const Text('CupertinoActionSheet'),
        ),
      ),
    );
  }
}

class CustomBottomSheetAction extends StatefulWidget implements CupertinoActionSheetAction {
  const CustomBottomSheetAction({
    super.key,
    required this.onPressed,
    this.isDefaultAction = false,
    this.isDestructiveAction = false,
    required this.child,
  });

  @override
  final VoidCallback onPressed;
  @override
  final bool isDefaultAction;
  @override
  final bool isDestructiveAction;
  @override
  final Widget child;

  @override
  State<CustomBottomSheetAction> createState() => _CustomBottomSheetActionState();
}

class _CustomBottomSheetActionState extends State<CustomBottomSheetAction> {
  @override
  Widget build(BuildContext context) {
    TextStyle style = const TextStyle(fontSize: 16);
    return GestureDetector(
      onTap: widget.onPressed,
      behavior: HitTestBehavior.opaque,
      child: ConstrainedBox(
        constraints: const BoxConstraints(minHeight: 57),
        child: Container(
          alignment: AlignmentDirectional.center,
          padding: const EdgeInsets.symmetric(
            vertical: 16.0,
            horizontal: 10.0,
          ),
          decoration: BoxDecoration(
            borderRadius: BorderRadius.circular(widget.isDefaultAction ? 12 : 0),
          ),
          child: DefaultTextStyle(
            style: style,
            textAlign: TextAlign.center,
            child: widget.child,
          ),
        ),
      ),
    );
  }
}