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

import 'async_action_button.dart';

class ConfirmDialog extends StatelessWidget {
  final String title;
  final String content;
  final IconData? icon;
  final String confirmButton;
  final String cancelButton;
  final void Function()? onConfirm;
  final AsyncActionCallback? onConfirmAsync;
  final AsyncErrorBuilder? errorBuilder;

  const ConfirmDialog({
    super.key,
    required this.title,
    this.content = '',
    this.icon,
    this.confirmButton = 'Ok',
    this.cancelButton = 'Abbrechen',
    this.onConfirm,
    this.onConfirmAsync,
    this.errorBuilder,
  }) : assert(onConfirm != null || onConfirmAsync != null,
          'ConfirmDialog requires either onConfirm or onConfirmAsync');

  void asDialog(BuildContext context) {
    showDialog(context: context, builder: build);
  }

  @override
  Widget build(BuildContext context) => AlertDialog(
        icon: icon != null ? Icon(icon) : null,
        title: Text(title),
        content: Text(content),
        actions: onConfirmAsync != null
            ? [
                AsyncDialogAction(
                  confirmLabel: confirmButton,
                  cancelLabel: cancelButton,
                  onConfirm: onConfirmAsync!,
                  errorBuilder: errorBuilder,
                ),
              ]
            : [
                TextButton(
                  onPressed: () => Navigator.of(context).pop(),
                  child: Text(cancelButton),
                ),
                TextButton(
                  onPressed: () {
                    Navigator.of(context).pop();
                    onConfirm!();
                  },
                  child: Text(confirmButton),
                ),
              ],
      );

  static void openBrowser(BuildContext context, String url) {
    showDialog(
      context: context,
      builder: (context) => ConfirmDialog(
        title: 'Link öffnen',
        content: 'Möchtest du den folgenden Link öffnen?\n$url',
        confirmButton: 'Öffnen',
        onConfirm: () => launchUrl(Uri.parse(url), mode: LaunchMode.externalApplication),
      ),
    );
  }
}