Client/lib/view/pages/holidays/holidays.dart

import 'package:flutter/material.dart';
import 'package:jiffy/jiffy.dart';
import 'package:provider/provider.dart';

import '../../../api/holidays/getHolidaysResponse.dart';
import '../../../model/holidays/holidaysProps.dart';
import '../../../storage/base/settingsProvider.dart';
import '../../../widget/confirmDialog.dart';
import '../../../widget/loadingSpinner.dart';

class Holidays extends StatefulWidget {
  const Holidays({super.key});

  @override
  State<Holidays> createState() => _HolidaysState();
}

class _HolidaysState extends State<Holidays> {
  late SettingsProvider settings = Provider.of<SettingsProvider>(context, listen: false);
  late bool showPastEvents = settings.val().holidaysSettings.showPastEvents;

  @override
  void initState() {
    WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
      Provider.of<HolidaysProps>(context, listen: false).run();
      if(!settings.val().holidaysSettings.dismissedDisclaimer) showDisclaimer();
    });

    super.initState();
  }

  String parseString(String enDate) {
    return Jiffy.parse(enDate).format(pattern: "dd.MM.yyyy");
  }

  void showDisclaimer() {
    showDialog(context: context, builder: (context) {
      return AlertDialog(
        title: const Text("Richtigkeit und Bereitstellung der Daten"),
        content: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            const Text(""
                "Sämtliche Datumsangaben sind ohne Gewähr.\n"
                "Ich übernehme weder Verantwortung für die Richtigkeit der Daten noch hafte ich für wirtschaftliche Schäden die aus der Verwendung dieser Daten entstehen können.\n\n"
                "Die Daten stammen von https://ferien-api.de/"),
            const SizedBox(height: 30),
            ListTile(
              title: const Text("Diese Meldung nicht mehr anzeigen"),
              trailing: Checkbox(
                value: settings.val().holidaysSettings.dismissedDisclaimer,
                onChanged: (value) => settings.val(write: true).holidaysSettings.dismissedDisclaimer = value!,
              ),
            )
          ],
        ),
        actions: [
          TextButton(child: const Text("ferien-api.de öffnen"), onPressed: () => ConfirmDialog.openBrowser(context, "https://ferien-api.de/")),
          TextButton(child: const Text("Schlißen"), onPressed: () => Navigator.of(context).pop()),
        ],
      );
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("Schulferien in Hessen"),
        actions: [
          IconButton(
            icon: const Icon(Icons.warning_amber_outlined),
            onPressed: () => showDisclaimer(),
          ),
          PopupMenuButton<bool>(
            initialValue: settings.val().holidaysSettings.showPastEvents,
            icon: const Icon(Icons.manage_history_outlined),
            itemBuilder: (context) {
              return [true, false].map((e) => PopupMenuItem<bool>(
                  value: e,
                  enabled: e != showPastEvents,
                  child: Row(
                    children: [
                      Icon(e ? Icons.history_outlined : Icons.history_toggle_off_outlined, color: Theme.of(context).colorScheme.onSurface),
                      const SizedBox(width: 15),
                      Text(e ? "Alle anzeigen" : "Nur zukünftige anzeigen")
                    ],
                  )
              )).toList();
            },
            onSelected: (e) {
              setState(() {
                showPastEvents = e;
                settings.val(write: true).holidaysSettings.showPastEvents = e;
              });
            },
          ),
        ],
      ),
      body: Consumer<HolidaysProps>(builder: (context, value, child) {
        if(value.primaryLoading()) return const LoadingSpinner();

        List<GetHolidaysResponseObject> holidays = value.getHolidaysResponse.data;
        if(!showPastEvents) holidays = holidays.where((element) => DateTime.parse(element.end).isAfter(DateTime.now())).toList();

        return ListView.builder(
            itemCount: holidays.length,
            itemBuilder: (context, index) {
              GetHolidaysResponseObject holiday = holidays[index];
              return ListTile(
                leading: const Icon(Icons.calendar_month),
                title: Text("${parseString(holiday.start)} bis ${parseString(holiday.end)}"),
                subtitle: Text("${holiday.name} - (${Jiffy.parse(holiday.start).fromNow()})"),
                onTap: () => showDialog(context: context, builder: (context) => SimpleDialog(
                  title: Text("Ferien in Hessen | ${holiday.year}"),
                  children: [
                    ListTile(
                      leading: const Icon(Icons.signpost_outlined),
                      title: Text(holiday.name),
                      subtitle: Text(holiday.slug),
                    ),
                    ListTile(
                      leading: const Icon(Icons.event),
                      title: Text("beginnend ${parseString(holiday.start)}"),
                    ),
                    ListTile(
                      leading: const Icon(Icons.event_busy_outlined),
                      title: Text("endend ${parseString(holiday.end)}"),
                    ),
                  ],
                )),
                trailing: const Icon(Icons.arrow_right),
              );
            },
          );
        },
      )
    );
  }
}