stadtbote-app/lib/content_views/set_desired_zip_page.dart

import 'package:dart_mq/dart_mq.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:stadtbote/content_views/utils/content_view_widget.dart';
import 'package:stadtbote/messages/pop_content_view_message.dart';
import 'package:stadtbote/network_messages/set_desired_zip_message.dart';
import 'package:stadtbote/tools/messages/publish_payload_message.dart';

import '../tools/constants.dart';
import '../tools/util.dart';

class SetDesiredZipPage extends ContentViewWidget {
  const SetDesiredZipPage({super.key});

  @override
  State<SetDesiredZipPage> createState() => _SetDesiredZipPageState();

  @override
  Future<Widget> getHeaderWidget(BuildContext context) async {
    await Future.delayed(const Duration(microseconds: 0));

    return _HeaderWidget();
  }
}

class _SetDesiredZipPageState extends State<SetDesiredZipPage>
    with ProducerMixin {
  TextEditingController textEditController = TextEditingController();

  @override
  void initState() {
    var savedDesiredZip =
        Util.preferencesGetString(Constants.prefsDesiredZip, null);
    if (savedDesiredZip != null) {
      textEditController.text = savedDesiredZip;
    }

    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.all(8.0),
      child: Column(children: [
        const Text("Bitte geben Sie Ihr Wunschziel für heute ein"),
        const SizedBox(height: 20),
        Row(
          mainAxisAlignment:
              MainAxisAlignment.center, // Zentriert das Textfeld horizontal
          children: [
            SizedBox(
              width: 120, // Festlegen der Breite des Textfelds
              child: Util.getDefaultTextField('PLZ',
                  textInputType: TextInputType.number,
                  formatter: [
                    // Erlaubt nur Ziffern
                    FilteringTextInputFormatter.digitsOnly,
                    // Begrenzt die maximale Eingabelänge auf 5 Zeichen
                    LengthLimitingTextInputFormatter(5),
                  ],
                  controller: textEditController,
                  maxLength: 5,
                  autofocus: true),
            ),
          ],
        ),
        const SizedBox(height: 20),
        getDefaultButton(
            'Übernehmen',
            () => {
                  if (textEditController.text.isEmpty ||
                      textEditController.text.length == 5)
                    {
                      Util.preferencesSaveString(
                          Constants.prefsDesiredZip, textEditController.text),
                      _sendDesiredZipMessage(textEditController.text),
                      sendMessage(
                        routingKey: Constants.messageTopicPopContentView,
                        payload: PopContentViewMessage(count: 1),
                      )
                    }
                  else
                    {
                      showAlertDialog("Fehler",
                          "Das Feld muss leer sein, oder es müssen fünf Zahlen eingegeben werden")
                    }
                })
      ]),
    );
  }

  _sendDesiredZipMessage(String desiredZip) {
    var desiredZipMessage = SetDesiredZipMessage();
    desiredZipMessage.desiredZip = desiredZip;

    sendMessage(
      routingKey: Constants.messageTopicPublishPayload,
      payload: PublishPayloadMessage(
          topic: "set_desired_zip",
          message: desiredZipMessage.toJson(),
          acknowledgeRequired: true),
    );
  }
}

class _HeaderWidget extends StatefulWidget {
  @override
  State<_HeaderWidget> createState() => _HeaderWidgetState();
}

class _HeaderWidgetState extends State<_HeaderWidget> with ProducerMixin {
  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    var cellWidth = (MediaQuery.of(context).size.width - 60 - 60 - 25) / 2;

    return Padding(
      padding: const EdgeInsets.all(8),
      child: Stack(
        alignment: Alignment.center,
        children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              Visibility(
                visible: true,
                child: Container(
                  width: 60,
                  height: 60,
                  decoration: const BoxDecoration(
                    shape: BoxShape.circle,
                    color: Colors.white,
                  ),
                  child: FittedBox(
                    child: GestureDetector(
                      onTap: () async {
                        sendMessage(
                          routingKey: Constants.messageTopicPopContentView,
                          payload: PopContentViewMessage(count: 1),
                        );
                      },
                      child: const CircleAvatar(
                        radius: 10,
                        backgroundColor: Constants.colorPrimary,
                        child: Padding(
                            padding: EdgeInsets.all(1.0),
                            child: Icon(Icons.arrow_back,
                                size: 20.0, color: Colors.white)),
                      ),
                    ),
                  ),
                ),
              ),
              Visibility(
                visible: false,
                child: Container(
                  width: 60,
                  height: 60,
                  decoration: const BoxDecoration(
                    shape: BoxShape.circle,
                    color: Colors.red,
                  ),
                  child: FittedBox(
                    child: GestureDetector(
                      onTap: () async {
                        sendMessage(
                          routingKey: Constants.messageTopicPopContentView,
                          payload: PopContentViewMessage(count: 1),
                        );
                      },
                      child: const CircleAvatar(
                          backgroundColor: Constants.colorPrimary,
                          radius: 10,
                          child: Padding(
                              padding: EdgeInsets.all(1.0),
                              child: Icon(Icons.info_outline,
                                  size: 20.0, color: Colors.white))),
                    ),
                  ),
                ),
              ),
            ],
          ),
          SizedBox(
            height: 100,
            width: cellWidth * 2,
            child: const Center(
              child: Text(
                textAlign: TextAlign.center,
                "Wunschziel für heute",
                style: TextStyle(
                    fontWeight: FontWeight.bold,
                    fontSize: 18,
                    color: Colors.white),
              ),
            ),
          ),
        ],
      ),
    );
  }
}