// Version: 1.5 - 見積書画面（簡易実装）
import 'package:flutter/material.dart';
import '../models/customer.dart';

/// 見積書作成画面
class EstimateScreen extends StatefulWidget {
  const EstimateScreen({super.key});

  @override
  State<EstimateScreen> createState() => _EstimateScreenState();
}

class _EstimateScreenState extends State<EstimateScreen> {
  Customer? _selectedCustomer;
  List<Customer> _customers = [];
  DateTime? _expiryDate;

  @override
  void initState() {
    super.initState();
    _loadCustomers();
  }

  Future<void> _loadCustomers() async {
    // TODO: DatabaseHelper.instance.getCustomers() を使用
    setState(() => _customers = []);
  }

  /// 見積有効期限を設定（簡易）
  void setExpiryDate(DateTime date) {
    setState(() => _expiryDate = date);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('見積書')),
      body: _selectedCustomer == null
          ? const Center(child: Text('得意先を選択してください'))
          : SingleChildScrollView(
              child: Padding(
                padding: const EdgeInsets.all(16),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.stretch,
                  children: [
                    // 見積有効期限設定エリア（簡易）
                    ListTile(
                      contentPadding: EdgeInsets.zero,
                      title: const Text('見積有効期限'),
                      subtitle: _expiryDate != null ? Text('${_expiryDate!.day}/${_expiryDate!.month}') : const Text('-'),
                      trailing: IconButton(icon: const Icon(Icons.calendar_today), onPressed: () {
                        // TODO: デイティピッカーの実装
                      }),
                    ),

                    const Divider(),

                    // 合計金額表示（簡易）
                    Card(
                      child: ListTile(
                        contentPadding: EdgeInsets.zero,
                        title: const Text('見積書合計'),
                        subtitle: const Text('¥0.00'),
                        trailing: IconButton(icon: const Icon(Icons.edit), onPressed: () {}),
                      ),
                    ),

                    const SizedBox(height: 16),

                    // PDF 帳票出力ボタン（簡易）
                    TextButton.icon(
                      onPressed: () {
                        ScaffoldMessenger.of(context).showSnackBar(
                          const SnackBar(content: Text('PDF 帳票生成中...')),
                        );
                      },
                      icon: const Icon(Icons.download),
                      label: const Text('PDF をダウンロード'),
                    ),
                  ],
                ),
              ),
            ),
    );
  }

}