import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../../core/time.dart';
import '../../data/db/daos/tracker_dao.dart';
import '../../state/providers.dart';

class CheckInScreen extends ConsumerStatefulWidget {
  final String habitId;
  const CheckInScreen({super.key, required this.habitId});

  @override
  ConsumerState<CheckInScreen> createState() => _CheckInScreenState();
}

class _CheckInScreenState extends ConsumerState<CheckInScreen> {
  bool _saving = false;

  Future<void> _record(String value) async {
    setState(() => _saving = true);
    try {
      final dao = ref.read(trackerDaoProvider);
      await dao.recordCheckIn(TrackerEntryDraft(
        habitId: widget.habitId,
        date: _ymd(nowKst()),
        value: value,
      ));
      if (!mounted) return;
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text(value == 'done' ? '체크인 완료' : '오늘은 비움')),
      );
      Navigator.of(context).pop();
    } catch (e) {
      if (!mounted) return;
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text('실패: $e')),
      );
    } finally {
      if (mounted) setState(() => _saving = false);
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('체크인')),
      body: Padding(
        padding: const EdgeInsets.all(24),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            Text('오늘 (${_ymd(nowKst())})',
                style: Theme.of(context).textTheme.titleLarge,
                textAlign: TextAlign.center),
            const SizedBox(height: 32),
            FilledButton(
              onPressed: _saving ? null : () => _record('done'),
              child: const Padding(
                padding: EdgeInsets.symmetric(vertical: 16),
                child: Text('완료', style: TextStyle(fontSize: 18)),
              ),
            ),
            const SizedBox(height: 12),
            OutlinedButton(
              onPressed: _saving ? null : () => _record('blank'),
              child: const Padding(
                padding: EdgeInsets.symmetric(vertical: 12),
                child: Text('비움'),
              ),
            ),
          ],
        ),
      ),
    );
  }
}

String _ymd(DateTime d) =>
    '${d.year.toString().padLeft(4, '0')}-'
    '${d.month.toString().padLeft(2, '0')}-'
    '${d.day.toString().padLeft(2, '0')}';