import 'package:diameter/components/dialogs.dart';
import 'package:diameter/config.dart';
import 'package:diameter/models/log_entry.dart';
import 'package:diameter/models/log_meal.dart';
import 'package:diameter/screens/log/log_meal_detail.dart';
import 'package:flutter/material.dart';

class LogMealListScreen extends StatefulWidget {
  final LogEntry logEntry;
  final Function() reload;

  const LogMealListScreen({Key? key, required this.logEntry, required this.reload})
      : super(key: key);

  @override
  _LogMealListScreenState createState() => _LogMealListScreenState();
}

class _LogMealListScreenState extends State<LogMealListScreen> {
  void reload({String? message}) {
    widget.reload();

    setState(() {
      if (message != null) {
        var snackBar = SnackBar(
          content: Text(message),
          duration: const Duration(seconds: 2),
        );
        ScaffoldMessenger.of(context)
          ..removeCurrentSnackBar()
          ..showSnackBar(snackBar);
      }
    });
  }

  void handleEditAction(LogMeal meal) {
    Navigator.push(
      context,
      MaterialPageRoute(
        builder: (context) => LogMealDetailScreen(
          logEntry: widget.logEntry,
          logMeal: meal,
        ),
      ),
    ).then((message) => reload(message: message));
  }

  void onDelete(LogMeal logMeal) {
    LogMeal.remove(logMeal.id);
    reload(message: 'Meal deleted');
  }

  void handleDeleteAction(LogMeal meal) async {
    if (showConfirmationDialogOnDelete) {
      Dialogs.showConfirmationDialog(
        context: context,
        onConfirm: () => onDelete(meal),
        message: 'Are you sure you want to delete this Meal?',
      );
    } else {
      onDelete(meal);
    }
  }

  @override
  Widget build(BuildContext context) {
    return Column(
        children: <Widget>[
          Expanded(
            child: widget.logEntry.meals.isNotEmpty ? ListView.builder(
              shrinkWrap: true,
              itemCount: widget.logEntry.meals.length,
              itemBuilder: (context, index) {
                final meal = widget.logEntry.meals[index];
                return ListTile(
                  onTap: () => handleEditAction(meal),
                  title: Row(
                    children: [
                      Expanded(child: Text(meal.value)),
                      Expanded(
                          child: Text(meal.carbsPerPortion != null
                              ? '${meal.carbsPerPortion} g carbs'
                              : '')),
                      Expanded(
                          child: Text(meal.bolus != null
                              ? '${meal.bolus} U'
                              : ''))
                    ],
                  ),
                  trailing: IconButton(
                    icon: const Icon(
                      Icons.delete,
                      color: Colors.blue,
                    ),
                    onPressed: () => handleDeleteAction(meal),
                  ),
                );
              },
            ) : const Center(
              child: Text(
                  'You have not added any Meals to this Log Entry yet!'),
            ),
          ),
        ],
    );
  }
}