import 'package:flutter/material.dart';

import '../../core/date_keys.dart';
import '../../models/app_state.dart';
import '../../models/habit.dart';
import '../../widgets/app_scaffold.dart';
import '../../widgets/dialogs.dart';
import '../../widgets/empty_state.dart';
import '../../widgets/habit_row.dart';

class HabitsScreen extends StatelessWidget {
  const HabitsScreen({
    required this.state,
    required this.onAddHabit,
    required this.onRenameHabit,
    required this.onDeleteHabit,
    required this.onToggleHabit,
    super.key,
  });

  final AppState state;
  final ValueChanged<String> onAddHabit;
  final void Function(Habit habit, String title) onRenameHabit;
  final ValueChanged<Habit> onDeleteHabit;
  final ValueChanged<Habit> onToggleHabit;

  @override
  Widget build(BuildContext context) {
    final today = todayKey();
    return AppScaffold(
      title: 'Habits',
      subtitle: 'Keep the list small and repeatable.',
      action: IconButton.filledTonal(
        tooltip: 'Add habit',
        onPressed: () => showHabitDialog(context, onAddHabit),
        icon: const Icon(Icons.add),
      ),
      child: ListView(
        padding: const EdgeInsets.fromLTRB(20, 8, 20, 24),
        children: [
          if (state.habits.isEmpty)
            EmptyState(
              icon: Icons.checklist_outlined,
              title: 'No habits yet',
              action: 'Add habit',
              onAction: () => showHabitDialog(context, onAddHabit),
            )
          else
            ...state.habits.map(
              (habit) => HabitRow(
                habit: habit,
                dateKey: today,
                onToggle: () => onToggleHabit(habit),
                onEdit:
                    () => showHabitDialog(
                      context,
                      (title) => onRenameHabit(habit, title),
                      initialValue: habit.title,
                    ),
                onDelete:
                    () =>
                        confirmDeleteHabit(context, () => onDeleteHabit(habit)),
              ),
            ),
        ],
      ),
    );
  }
}