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

showZipPopup(BuildContext context, String text, String buttonText,
    Function(String) onFinished) async {
  final TextEditingController textEditingController = TextEditingController();
  final FocusNode focusNode = FocusNode();

  await showDialog(
      context: context,
      barrierDismissible: false,
      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) {
                  WidgetsBinding.instance.addPostFrameCallback((_) {
                    if (context.mounted && !focusNode.hasFocus) {
                      focusNode.requestFocus();
                    }
                  });

                  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('zip'.tr,
                                  formatter: [
                                    FilteringTextInputFormatter.digitsOnly,
                                    LengthLimitingTextInputFormatter(5),
                                  ],
                                  textInputType: TextInputType.number,
                                  controller: textEditingController,
                                  focusNode: focusNode,
                                  autofocus: true),
                              const SizedBox(height: 20),
                              getDefaultButton(
                                  buttonText,
                                  () {
                                    if (_checkInput(context,
                                        textEditingController.text)) {
                                      final result = textEditingController.text;
                                      textEditingController.dispose();
                                      focusNode.dispose();
                                      Navigator.of(context).pop();
                                      onFinished(result);
                                    }
                                  }),
                            ],
                          ),
                        ),
                      ));
                })));
      });
}

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

  if (input.length != 5) {
    message += 'enter_zip'.tr;
  }

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

  return message.isEmpty;
}