import 'dart:developer';

import 'package:calorimeter/utils/scan_food_floating_button.dart';
import 'package:calorimeter/utils/app_drawer.dart';
import 'package:calorimeter/food_entry/food_entry_bloc.dart';
import 'package:calorimeter/perdate/entry_list.dart';
import 'package:calorimeter/storage/storage.dart';
import 'package:calorimeter/utils/calendar_floating_button.dart';
import 'package:calorimeter/utils/rectangular_notch_shape.dart';
import 'package:calorimeter/utils/sum_widget.dart';
import 'package:calorimeter/utils/theme_switcher_button.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:intl/intl.dart';
import 'package:provider/provider.dart';

class PerDateWidget extends StatefulWidget {
  final DateTime date;
  const PerDateWidget({super.key, required this.date});

  @override
  State<PerDateWidget> createState() => _PerDateWidgetState();
}

class _PerDateWidgetState extends State<PerDateWidget> {
  late FoodStorage storage;
  late Future<List<FoodEntry>> entriesFuture;
  List<FoodEntry> entries = [];

  @override
  void initState() {
    log("PerDateWidgetState's initState()");
    storage = FoodStorage.getInstance();
    entriesFuture = storage.getEntriesForDate(widget.date);
    entriesFuture.then((val) {
      entries = val;
    });
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    log("PerDateWidgetState's build()");
    return FutureBuilder(
        future: entriesFuture,
        builder: (context, snapshot) {
          if (snapshot.connectionState != ConnectionState.done) {
            return const Center(child: CircularProgressIndicator());
          } else {
            return ChangeNotifierProvider(
              create: (context) => EnterFoodController(),
              child: BlocProvider(
                create: (context) => FoodEntryBloc(
                    initialState: FoodEntryState(foodEntries: entries),
                    storage: storage,
                    forDate: widget.date),
                child: BlocBuilder<FoodEntryBloc, FoodEntryState>(
                    builder: (context, state) {
                  return Scaffold(
                      appBar: AppBar(
                        title:
                            Text(DateFormat.yMMMMd('de').format(widget.date)),
                        actions: const [ThemeSwitcherButton()],
                      ),
                      body: FoodEntryList(entries: state.foodEntries),
                      bottomNavigationBar: BottomAppBar(
                          shape: const RectangularNotchShape(),
                          color: Theme.of(context).colorScheme.secondary,
                          child: SumWidget(foodEntries: state.foodEntries)),
                      drawer: const AppDrawer(),
                      floatingActionButton: OverflowBar(children: [
                        const ScanFoodFloatingButton(),
                        const SizedBox(width: 8),
                        CalendarFloatingButton(
                          startFromDate: widget.date,
                          onDateSelected: (dateSelected) {
                            Navigator.of(context).push(
                              MaterialPageRoute(
                                builder: (context) {
                                  return PerDateWidget(date: dateSelected);
                                },
                              ),
                            );
                          },
                        ),
                      ]),
                      floatingActionButtonLocation:
                          FloatingActionButtonLocation.endDocked);
                }),
              ),
            );
          }
        });
  }
}

class EnterFoodController extends ChangeNotifier {
  String name = "";
  String kcalPer100g = "";

  void set(String newName, String newKcal) {
    name = newName;
    kcalPer100g = newKcal;
    notifyListeners();
  }
}