258 lines
No EOL
9.3 KiB
Dart
258 lines
No EOL
9.3 KiB
Dart
// Version: 1.16 - 売上入力画面（PDF 帳票生成簡易実装：TODO コメント化）
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import 'package:flutter/material.dart';
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import 'package:intl/intl.dart';
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import 'dart:convert';
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import '../services/database_helper.dart' as db;
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import '../models/product.dart';
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import '../models/customer.dart';
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class SalesScreen extends StatefulWidget {
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const SalesScreen({super.key});
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@override
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State<SalesScreen> createState() => _SalesScreenState();
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}
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class _SalesScreenState extends State<SalesScreen> with WidgetsBindingObserver {
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List<Product> products = <Product>[];
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List<_SaleItem> saleItems = <_SaleItem>[];
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double totalAmount = 0.0;
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Customer? selectedCustomer;
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final NumberFormat _currencyFormatter = NumberFormat.currency(symbol: '¥', decimalDigits: 0);
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// 初期化時に製品リストを取得（簡易：DB の product_code は空なのでサンプルから生成）
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Future<void> loadProducts() async {
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try {
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// DB から製品一覧を取得
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final result = await db.DatabaseHelper.instance.query('products', orderBy: 'id DESC');
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if (result.isEmpty) {
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// データベースに未登録の場合：簡易テストデータ
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products = <Product>[
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Product(id: 1, productCode: 'TEST001', name: 'サンプル商品 A', unitPrice: 1000.0),
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Product(id: 2, productCode: 'TEST002', name: 'サンプル商品 B', unitPrice: 2500.0),
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];
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} else {
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// DB の製品データを Model に変換
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products = List.generate(result.length, (i) {
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return Product(
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id: result[i]['id'] as int?,
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productCode: result[i]['product_code'] as String? ?? '',
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name: result[i]['name'] as String? ?? '',
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unitPrice: (result[i]['unit_price'] as num?)?.toDouble() ?? 0.0,
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quantity: (result[i]['quantity'] as int?) ?? 0,
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stock: (result[i]['stock'] as int?) ?? 0,
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);
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});
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}
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} catch (e) {
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// エラー時は空リストで初期化
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products = <Product>[];
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}
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}
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Future<void> refreshProducts() async {
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await loadProducts();
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if (mounted) setState(() {});
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}
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// Database に売上データを保存
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Future<void> saveSalesData() async {
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if (saleItems.isEmpty || !mounted) return;
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try {
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final itemsJson = jsonEncode(saleItems.map((item) => {
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'product_id': item.productId,
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'product_name': item.productName,
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'product_code': item.productCode,
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'unit_price': item.unitPrice.round(),
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'quantity': item.quantity,
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'subtotal': (item.unitPrice * item.quantity).round(),
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}));
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final salesData = {
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'id': DateTime.now().millisecondsSinceEpoch,
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'customer_id': selectedCustomer?.id ?? 1,
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'sale_date': DateFormat('yyyy-MM-dd HH:mm:ss').format(DateTime.now()),
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'total_amount': totalAmount.round(),
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'tax_rate': 8,
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'product_items': itemsJson,
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};
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// sqflite の insert API を使用（insertSales は存在しない）
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final insertedId = await db.DatabaseHelper.instance.insert('sales', salesData);
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('✅ 売上データ保存完了'),
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backgroundColor: Colors.green,
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duration: Duration(seconds: 2)),
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);
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showDialog(
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context: context,
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builder: (ctx) => AlertDialog(
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title: const Text('保存成功'),
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content: Text('売上 ID: #$insertedId\n合計金額：${_currencyFormatter.format(totalAmount)}'),
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actions: [
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TextButton(
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onPressed: () => Navigator.pop(ctx),
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child: const Text('OK'),
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),
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],
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),
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);
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}
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} catch (e) {
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if (mounted) ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('❌ 保存エラー：$e'), backgroundColor: Colors.red),
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);
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}
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}
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// PDF 帳票生成ロジックは TODO に記述（printing パッケージ使用）
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Future<void> generateAndShareInvoice() async {
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if (saleItems.isEmpty || !mounted) return;
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try {
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await saveSalesData();
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if (!mounted) return;
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// TODO: PDF ファイルを生成して共有するロジックを実装（printing パッケージ使用）
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// 簡易実装：成功メッセージのみ表示
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('📄 売上明細が共有されました'), backgroundColor: Colors.green),
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);
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} catch (e) {
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if (mounted) ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('共有エラー：$e'), backgroundColor: Colors.orange),
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);
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}
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}
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Future<void> searchProduct(String keyword) async {
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if (!mounted || keyword.isEmpty) return;
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final keywordLower = keyword.toLowerCase();
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final matchedProducts = products.where((p) =>
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(p.name?.toLowerCase() ?? '').contains(keywordLower) ||
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(p.productCode ?? '').contains(keyword)).toList();
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setState(() {
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for (final product in matchedProducts) {
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final existingItemIndex = saleItems.indexWhere((item) => item.productId == product.id);
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if (existingItemIndex == -1 || saleItems[existingItemIndex].quantity < 1) {
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saleItems.add(_SaleItem(
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productId: product.id ?? 0,
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productName: product.name ?? '',
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productCode: product.productCode ?? '',
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unitPrice: product.unitPrice ?? 0.0,
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quantity: 1,
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totalAmount: (product.unitPrice ?? 0.0),
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));
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} else {
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saleItems[existingItemIndex].quantity += 1;
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saleItems[existingItemIndex].totalAmount =
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saleItems[existingItemIndex].unitPrice * saleItems[existingItemIndex].quantity;
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}
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}
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calculateTotal();
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});
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}
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void removeItem(int index) {
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if (index >= 0 && index < saleItems.length) {
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saleItems.removeAt(index);
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calculateTotal();
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}
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}
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void calculateTotal() {
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final items = saleItems.map((item) => item.totalAmount).toList();
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setState(() => totalAmount = items.fold(0, (sum, val) => sum + val));
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}
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@override
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Widget build(BuildContext context) {
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// 製品リストを初期化する（1 回だけ）
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if (products.isEmpty) {
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loadProducts();
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}
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return Scaffold(
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appBar: AppBar(title: const Text('/S4. 売上入力（レジ）'), actions: [
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IconButton(icon: const Icon(Icons.save), onPressed: saveSalesData,),
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IconButton(icon: const Icon(Icons.refresh), onPressed: refreshProducts,),
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]),
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body: Column(
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children: <Widget>[
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Padding(
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padding: const EdgeInsets.all(16),
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child: Card(
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elevation: 4,
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child: Padding(
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padding: const EdgeInsets.all(16),
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child: Column(crossAxisAlignment: CrossAxisAlignment.stretch, children: [
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Text('レジモード', style: Theme.of(context).textTheme.titleLarge?.copyWith(fontWeight: FontWeight.bold)),
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const SizedBox(height: 8),
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Row(children: <Widget>[Text('合計'), const Icon(Icons.payments, size: 32)]),
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const SizedBox(height: 4),
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Text('${_currencyFormatter.format(totalAmount)}', style: const TextStyle(fontSize: 48, fontWeight: FontWeight.bold, color: Colors.teal)),
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],),
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),
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),
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),
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 16),
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child: TextField(
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decoration: InputDecoration(labelText: '商品検索', hintText: 'JAN コードまたは商品名を入力して選択', prefixIcon: const Icon(Icons.search)),
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onChanged: searchProduct,
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),
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),
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Expanded(
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child: saleItems.isEmpty
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? Center(child: Text('商品を登録'))
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: ListView.separated(
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itemCount: saleItems.length,
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itemBuilder: (context, index) {
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final item = saleItems[index];
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return Padding(
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padding: const EdgeInsets.symmetric(vertical: 4),
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child: Card(
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child: ListTile(
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leading: CircleAvatar(child: Icon(Icons.store)),
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title: Text(item.productName ?? ''),
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subtitle: Text('コード：${item.productCode} / ${_currencyFormatter.format(item.totalAmount)}'),
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trailing: IconButton(icon: const Icon(Icons.remove_circle_outline), onPressed: () => removeItem(index),),
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),
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),
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);
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},
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separatorBuilder: (_, __) => const Divider(),
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),
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),
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],
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),
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);
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}
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}
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class _SaleItem {
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final int productId;
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final String productName;
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final String productCode;
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final double unitPrice;
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int quantity;
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double totalAmount;
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_SaleItem({
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required this.productId,
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required this.productName,
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required this.productCode,
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required this.unitPrice,
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required this.quantity,
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required this.totalAmount,
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});
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} |