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

import '../common/theme_shadcn.dart';
import '../../injection_container.dart';
import '../common/widgets/standard_states.dart';
import 'controllers/rent_controller.dart';

class RentDashboard extends StatefulWidget {
  const RentDashboard({super.key});

  @override
  State<RentDashboard> createState() => _RentDashboardState();
}

class _RentDashboardState extends State<RentDashboard> {
  late final RentController _controller;

  @override
  void initState() {
    super.initState();
    _controller = getIt<RentController>();
    _loadData();
  }

  Future<void> _loadData() async {
    await _controller.loadRents();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: ShadcnTheme.background,
      body: ChangeNotifierProvider.value(
        value: _controller,
        child: Consumer<RentController>(
          builder: (context, controller, child) {
            if (controller.isLoading) {
              return const StandardLoadingState(message: '임대 정보를 불러오는 중...');
            }

            if (controller.hasError) {
              return StandardErrorState(
                message: controller.error!,
                onRetry: _loadData,
              );
            }

            return SingleChildScrollView(
              padding: const EdgeInsets.all(16),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  // 제목
                  Text('임대 현황', style: ShadcnTheme.headingH3),
                  const SizedBox(height: 24),

                  // 임대 목록 보기 버튼
                  _buildViewRentListButton(),
                  const SizedBox(height: 32),

                  // 백엔드에 대시보드 API가 없어 연체/진행중 데이터를 표시할 수 없음
                  Center(
                    child: Container(
                      padding: const EdgeInsets.all(40),
                      child: Column(
                        children: [
                          Icon(Icons.info_outline, size: 64, color: Colors.blue[400]),
                          const SizedBox(height: 16),
                          Text(
                            '임대 대시보드 기능은 백엔드 API가 준비되면 제공될 예정입니다.',
                            style: ShadcnTheme.bodyLarge,
                            textAlign: TextAlign.center,
                          ),
                          const SizedBox(height: 8),
                          Text(
                            '임대 목록에서 단순 데이터를 확인하세요.',
                            style: ShadcnTheme.bodyMedium.copyWith(color: ShadcnTheme.foregroundMuted),
                          ),
                        ],
                      ),
                    ),
                  ),
                ],
              ),
            );
          },
        ),
      ),
    );
  }

  Widget _buildViewRentListButton() {
    return Center(
      child: ElevatedButton.icon(
        onPressed: () {
          Navigator.pushNamed(context, '/rent/list');
        },
        icon: const Icon(Icons.list),
        label: const Text('임대 목록 보기'),
        style: ElevatedButton.styleFrom(
          backgroundColor: ShadcnTheme.primary,
          foregroundColor: ShadcnTheme.primaryForeground,
          padding: const EdgeInsets.symmetric(horizontal: 32, vertical: 16),
        ),
      ),
    );
  }


  String _formatCurrency(dynamic amount) {
    if (amount == null) return '0';
    final num = amount is String ? double.tryParse(amount) ?? 0 : amount.toDouble();
    return num.toStringAsFixed(0);
  }
}