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import 'package:flutter/material.dart';
import 'package:pmsna1/utils.dart';
import 'package:provider/provider.dart';
import 'package:table_calendar/table_calendar.dart';
import '../models/event.dart';
import '../providers/events_provider.dart';
import '../widgets/event_list.dart';
enum Vista { calendario, lista }
class EventsScreen extends StatefulWidget {
const EventsScreen({super.key});
@override
State<EventsScreen> createState() => _EventsScreenState();
}
class _EventsScreenState extends State<EventsScreen> {
Vista vista = Vista.calendario;
DateTime _selectedDay = DateTime.now();
DateTime _focusedDay = DateTime.now();
CalendarFormat _calendarFormat = CalendarFormat.month;
Color? getEventColor(Event e) {
DateTime today = DateTime.now();
if (daysBetween(today, e.date) > 0 && daysBetween(today, e.date) <= 2) {
// 7. Cuando el evento esté a 2 días de realizarse, la
// celda del calendario deberá pintarse de color amarillo
return Colors.yellow;
} else if (isSameDay(e.date, today)) {
// 8. Cuando el evento sea el día en curso cambiará a un
// color verde
return Colors.green;
} else if (today.isAfter(e.date) && !e.completed) {
// 9. Cuando el evento ya haya pasado y no se haya
// completado, entonces se marcará en rojo
return Colors.red;
} else if (today.isAfter(e.date) && e.completed) {
// 10. Si el evento ya pasó y está como completado se
// dejará en verde
return Colors.green;
}
return null;
}
@override
Widget build(BuildContext context) {
EventsProvider provider = Provider.of<EventsProvider>(context);
return Scaffold(
appBar: AppBar(
title: const Text('Eventos'),
actions: [
SegmentedButton<Vista>(
showSelectedIcon: false,
segments: const [
ButtonSegment<Vista>(
value: Vista.calendario,
icon: Icon(Icons.calendar_month),
),
ButtonSegment<Vista>(
value: Vista.lista,
icon: Icon(Icons.list),
),
],
selected: <Vista>{vista},
onSelectionChanged: (p0) {
setState(() {
vista = p0.first;
});
},
)
],
),
body: Container(
child: vista == Vista.calendario
? SingleChildScrollView(
child: TableCalendar(
firstDay: DateTime.fromMicrosecondsSinceEpoch(0),
lastDay: DateTime.utc(9000, 12, 31),
focusedDay: _focusedDay,
selectedDayPredicate: (day) {
return isSameDay(_selectedDay, day);
},
onDaySelected: (selectedDay, focusedDay) {
setState(() {
_selectedDay = selectedDay;
_focusedDay = focusedDay;
});
},
calendarFormat: _calendarFormat,
onFormatChanged: (format) {
setState(() {
_calendarFormat = format;
});
},
eventLoader: (day) => provider.getEventsForDay(day),
// Source: https://stackoverflow.com/a/69036998
calendarBuilders: CalendarBuilders(
singleMarkerBuilder: (context, day, event) {
if (event == null) return null;
Event e = event as Event;
Color color = getEventColor(e) ??
Theme.of(context).colorScheme.onSurface;
return Container(
decoration: BoxDecoration(
shape: BoxShape.circle,
color: color,
),
width: 5.0,
height: 5.0,
margin: const EdgeInsets.symmetric(horizontal: 1.5),
);
},
),
),
)
: const EventList()),
floatingActionButton: FloatingActionButton.extended(
label: const Text('Nuevo'),
icon: const Icon(Icons.add),
onPressed: () {
Navigator.of(context).pushNamed('/newevent');
},
),
);
}
}
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