import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:calorimeter/food_entry/food_entry_bloc.dart';
import 'package:calorimeter/utils/settings_bloc.dart';

class SumWidget extends StatelessWidget {
  final DateTime date;

  const SumWidget({super.key, required this.date});

  @override
  Widget build(BuildContext context) {
    return BlocBuilder<FoodEntryBloc, GlobalEntryState>(
        builder: (context, entryState) {
      return BlocBuilder<SettingsDataBloc, SettingsState>(
        builder: (context, settingsState) {
          var sum = 0.0;
          for (var entry in entryState.foodEntries[date] ?? []) {
            sum += entry.kcalPer100 / 100 * entry.mass;
          }
          var diff = settingsState.kcalLimit - sum;
          var diffLimit = settingsState.kcalLimit ~/ 4;

          var textColor = Theme.of(context).colorScheme.onSecondary;
          var newTextColor = textColor;
          var brightness = Theme.of(context).brightness;

          switch (brightness) {
            case Brightness.dark:
              if (diff < 0) {
                newTextColor = Colors.red[900]!;
              } else if (diff < diffLimit) {
                newTextColor = Colors.orange[900]!;
              }
              break;

            case Brightness.light:
              if (diff < 0) {
                newTextColor = Colors.redAccent;
              } else if (diff < diffLimit) {
                newTextColor = Colors.orangeAccent;
              }
              break;
          }

          return Align(
            alignment: Alignment.centerLeft,
            child: Text(
              'kcal heute: ${sum.ceil().toString()}/${settingsState.kcalLimit.ceil()}',
              style: Theme.of(context)
                  .textTheme
                  .bodyLarge!
                  .copyWith(color: newTextColor),
            ),
          );
        },
      );
    });
  }
}