import 'dart:developer';

import 'package:flutter/material.dart';
import 'package:marianum_mobile/data/timetable/timetableProps.dart';
import 'package:marianum_mobile/screen/pages/timetable/weekView.dart';
import 'package:marianum_mobile/widget/errorView.dart';
import 'package:provider/provider.dart';


class Timetable extends StatefulWidget {
  const Timetable({Key? key}) : super(key: key);

  @override
  State<Timetable> createState() => _TimetableState();
}

class _TimetableState extends State<Timetable> {
  bool draggable = true;

  @override
  void initState() {
    super.initState();

    WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
      Provider.of<TimetableProps>(context, listen: false).nearest();
    });
  }
  
  @override
  Widget build(BuildContext context) {
    TimetableProps timetable = Provider.of<TimetableProps>(context, listen: false);

    return Scaffold(
      appBar: AppBar(
        title: const Text("Vertretungsplan"),
        actions: [
          IconButton(onPressed: () => timetable.switchWeek(previous: true), icon: const Icon(Icons.chevron_left)),
          IconButton(onPressed: () => timetable.nearest(), icon: const Icon(Icons.home)),
          IconButton(onPressed: () => timetable.switchWeek(), icon: const Icon(Icons.chevron_right))
        ],
      ),
      body: Consumer<TimetableProps>(
        builder: (context, value, child) {

          if(value.hasError) {
            return ErrorView(icon: Icons.error, text: value.error?.message ?? "Unbekannt?");
          }

          if(value.primaryLoading()) {
            log("LOADING");
            return const Center(child: CircularProgressIndicator());
          }

          return WeekView(value);
        },
      ),
    );
  }
}