86 lines
3.7 KiB
Dart
86 lines
3.7 KiB
Dart
import 'package:print_bluetooth_thermal/print_bluetooth_thermal.dart';
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import 'package:esc_pos_utils_plus/esc_pos_utils_plus.dart';
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import '../models/invoice_models.dart';
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import 'package:intl/intl.dart';
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import 'company_repository.dart';
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class PrintService {
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/// ペアリング済みのBluetoothデバイス一覧を取得
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Future<List<BluetoothInfo>> getPairedDevices() async {
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return await PrintBluetoothThermal.pairedBluetooths;
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}
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/// 指定したデバイスに接続
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Future<bool> connect(String macAddress) async {
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return await PrintBluetoothThermal.connect(macPrinterAddress: macAddress);
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}
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/// 接続状態の確認
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Future<bool> get isConnected async => await PrintBluetoothThermal.connectionStatus;
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/// レシートを生成して印刷
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Future<bool> printReceipt(Invoice invoice) async {
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if (!await isConnected) return false;
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// 日本語フォントサポート等のために、本来は画像生成が必要な場合が多いが
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// ここでは標準的なESC/POSテキスト出力を実装
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final profile = await CapabilityProfile.load();
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final generator = Generator(PaperSize.mm58, profile);
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List<int> bytes = [];
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// 自社情報の取得（税表示設定のため）
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final companyRepo = CompanyRepository();
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final companyInfo = await companyRepo.getCompanyInfo();
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// ヘッダー
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bytes += generator.text(
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invoice.documentTypeName,
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styles: const PosStyles(align: PosAlign.center, height: PosTextSize.size2, width: PosTextSize.size2, bold: true),
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);
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bytes += generator.text("--------------------------------", styles: const PosStyles(align: PosAlign.center));
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bytes += generator.text("No: ${invoice.invoiceNumber}", styles: const PosStyles(align: PosAlign.center));
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bytes += generator.text("Date: ${DateFormat('yyyy/MM/dd HH:mm').format(invoice.date)}", styles: const PosStyles(align: PosAlign.center));
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bytes += generator.text("--------------------------------", styles: const PosStyles(align: PosAlign.center));
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bytes += generator.text("Customer:", styles: const PosStyles(bold: true));
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bytes += generator.text(invoice.customerNameForDisplay);
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bytes += generator.feed(1);
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bytes += generator.text("Items:", styles: const PosStyles(bold: true));
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for (var item in invoice.items) {
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bytes += generator.text(item.description);
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bytes += generator.row([
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PosColumn(text: " ${item.quantity} x ${item.unitPrice}", width: 8),
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PosColumn(text: "￥${item.subtotal}", width: 4, styles: const PosStyles(align: PosAlign.right)),
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]);
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}
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bytes += generator.text("--------------------------------");
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bytes += generator.row([
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PosColumn(text: "Subtotal", width: 8),
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PosColumn(text: "￥${invoice.subtotal}", width: 4, styles: const PosStyles(align: PosAlign.right)),
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]);
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if (companyInfo.taxDisplayMode == 'normal') {
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bytes += generator.row([
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PosColumn(text: "Tax", width: 8),
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PosColumn(text: "￥${invoice.tax}", width: 4, styles: const PosStyles(align: PosAlign.right)),
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]);
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} else if (companyInfo.taxDisplayMode == 'text_only') {
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bytes += generator.row([
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PosColumn(text: "Tax", width: 8),
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PosColumn(text: "(Tax Excl.)", width: 4, styles: const PosStyles(align: PosAlign.right)),
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]);
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}
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bytes += generator.row([
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PosColumn(text: companyInfo.taxDisplayMode == 'hidden' ? "TOTAL" : "TOTAL(Incl)", width: 7, styles: const PosStyles(bold: true, height: PosTextSize.size1)),
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PosColumn(text: "￥${invoice.totalAmount}", width: 5, styles: const PosStyles(align: PosAlign.right, bold: true, height: PosTextSize.size1)),
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]);
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bytes += generator.feed(3);
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bytes += generator.cut();
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return await PrintBluetoothThermal.writeBytes(bytes);
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}
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}
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