// Version: 1.6 - 倉庫管理画面（簡易実装）
import 'package:flutter/material.dart';

/// 倉庫管理画面
class WarehouseMasterScreen extends StatefulWidget {
  const WarehouseMasterScreen({super.key});

  @override
  State<WarehouseMasterScreen> createState() => _WarehouseMasterScreenState();
}

class _WarehouseMasterScreenState extends State<WarehouseMasterScreen> {
  String _warehouseName = ''; // 倉庫名
  List<String> _warehouses = []; // 倉庫リスト

  @override
  void initState() {
    super.initState();
    // TODO: DatabaseHelper.instance.getWarehouses() を使用
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('倉庫管理')),
      body: SingleChildScrollView(
        child: Padding(
          padding: const EdgeInsets.all(16),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              // 倉庫名入力
              TextField(
                decoration: const InputDecoration(hintText: '倉庫名', border: OutlineInputBorder()),
                onChanged: (value) => setState(() => _warehouseName = value),
              ),

              const SizedBox(height: 16),

              // 倉庫リスト（簡易）
              if (_warehouses.isEmpty)
                Center(child: Text('倉庫データがありません'))
              else ..._warehouses.map(
                (w) => Card(
                  child: ListTile(
                    title: Text(w),
                    trailing: IconButton(icon: const Icon(Icons.delete), onPressed: () {}),
                  ),
                ),
              ),

              const SizedBox(height: 16),

              // 追加ボタン（簡易）
              ElevatedButton(
                onPressed: () {
                  if (_warehouseName.isNotEmpty) {
                    setState(() => _warehouses.add(_warehouseName));
                    _warehouseName = '';
                  }
                },
                style: ElevatedButton.styleFrom(padding: const EdgeInsets.symmetric(vertical: 12)),
                child: const Text('倉庫を追加'),
              ),

            ],
          ),
        ),
      ),
    );
  }

}