import 'package:aman_kassa_flutter/core/locator.dart';
import 'package:aman_kassa_flutter/core/models/dialog_models.dart';
import 'package:aman_kassa_flutter/core/services/dialog_service.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

class DialogManager extends StatefulWidget {
  final Widget child;

  DialogManager({Key key, this.child}) : super(key: key);

  _DialogManagerState createState() => _DialogManagerState();
}

class _DialogManagerState extends State<DialogManager> {
  DialogService _dialogService = locator<DialogService>();
  TextEditingController controller;

  @override
  void initState() {
    super.initState();
    controller = new TextEditingController();
    _dialogService.registerDialogListener(_showDialog, _showDialogInput);
  }

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

  @override
  Widget build(BuildContext context) {
    return widget.child;
  }

  void _showDialog(DialogRequest request) {
    var isConfirmationDialog = request.cancelTitle != null;
    showDialog(
        context: context,
        builder: (context) => AlertDialog(
              title: Text(request.title),
              content: Text(request.description),
              actions: <Widget>[
                if (isConfirmationDialog)
                  FlatButton(
                    child: Text(request.cancelTitle),
                    onPressed: () {
                      _dialogService
                          .dialogComplete(DialogResponse(confirmed: false));
                    },
                  ),
                FlatButton(
                  child: Text(request.buttonTitle),
                  onPressed: () {
                    _dialogService
                        .dialogComplete(DialogResponse(confirmed: true));
                  },
                ),
              ],
            ));
  }

  void _showDialogInput(DialogRequest request) {
    var isConfirmationDialog = request.cancelTitle != null;
    controller.clear();
    showDialog(
        context: context,
        builder: (context) => AlertDialog(
          title: Text(request.title),
          content: Column(
            mainAxisSize: MainAxisSize.min,
            children: <Widget>[
              Text(request.description),
              TextField(
                controller: controller,
                keyboardType: TextInputType.number,
                inputFormatters: <TextInputFormatter>[
                  WhitelistingTextInputFormatter(RegExp("^[0-9.]*")),
                ],
              )
            ],
          ),
          actions: <Widget>[
            if (isConfirmationDialog)
              FlatButton(
                child: Text(request.cancelTitle),
                onPressed: () {
                  _dialogService
                      .dialogComplete(DialogResponse(confirmed: false));
                },
              ),
            FlatButton(
              child: Text(request.buttonTitle),
              onPressed: () {
                _dialogService
                    .dialogComplete(DialogResponse(confirmed: true, responseText: controller.text));
              },
            ),
          ],
        ));
  }
}