import 'package:flutter/material.dart';
import 'package:stadtbote/tools/util.dart';

showZipPopup(BuildContext context, String text, String buttonText, Function(String) onFinished) async {
  await showDialog(
      context: context,
      builder: (BuildContext context) {
        return PopScope(
            canPop: false,
            onPopInvokedWithResult: (bool didPop, dynamic result) async {
              if (!didPop) {
                final shouldPop = await taskDialogSecurityException(context);
                if (shouldPop && context.mounted) {
                  Navigator.of(context).pop();
                }
              }
            },
            child: AlertDialog(
            contentPadding: EdgeInsets.zero,
            shadowColor: Colors.transparent,
            backgroundColor: Colors.white,
            content: StatefulBuilder(builder: (BuildContext context, StateSetter setState) {
              TextEditingController textEditingController = TextEditingController();

              return SizedBox(
                  key: GlobalKey(),
                  height: 293,
                  width: MediaQuery.of(context).size.width * 0.8,
                  child: Container(
                    height: 100,
                    decoration: BoxDecoration(
                      borderRadius: BorderRadius.circular(10),
                      color: Colors.white,
                      border: Border.all(
                        color: Colors.grey,
                        width: 0.5,
                      ),
                    ),
                    child: Padding(
                      padding: const EdgeInsets.all(35.0),
                      child: Column(
                        children: [
                          Text(text, style: const TextStyle(fontWeight: FontWeight.bold)),
                          const SizedBox(height: 20),
                          Util.getDefaultTextField('Postleitzahl',
                              formatter: [DecimalTextInputFormatter(maxLength: 5, decimalPlaces: 0)],
                              textInputType: const TextInputType.numberWithOptions(signed: true, decimal: true),
                              controller: textEditingController,
                              autofocus: true),
                          const SizedBox(height: 20),
                          getDefaultButton(
                              buttonText,
                              () => {
                                    if (_checkInput(context, textEditingController.text))
                                      {Navigator.of(context).pop(), onFinished(textEditingController.text)},
                                  }),
                        ],
                      ),
                    ),
                  ));
            })));
      });
}

bool _checkInput(BuildContext context, String input) {
  String message = '';

  if (input.length != 5) {
    message += 'Bitte geben Sie eine fünfstellige Postleitzahl ein';
  }

  if (message.isNotEmpty) {
    showAlertDialog('Fehler', message);
  }

  return message.isEmpty;
}