295 lines
12 KiB
Dart
295 lines
12 KiB
Dart
// lib/services/pdf_generator.dart
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import 'dart:io';
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import 'dart:typed_data';
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import 'package:flutter/material.dart' show debugPrint;
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import 'package:flutter/services.dart';
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import 'package:pdf/pdf.dart';
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import 'package:pdf/widgets.dart' as pw;
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import 'package:path_provider/path_provider.dart';
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import 'package:crypto/crypto.dart';
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import 'package:intl/intl.dart';
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import 'package:printing/printing.dart';
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import '../models/invoice_models.dart';
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import '../models/company_model.dart'; // Companyモデルをインポート
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import 'master_repository.dart'; // MasterRepositoryをインポート
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/// A4サイズのプロフェッショナルな帳票PDFを生成し、保存する
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/// 見積書、納品書、請求書、領収書の各DocumentTypeに対応
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Future<String?> generateInvoicePdf(Invoice invoice) async {
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try {
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final pdf = pw.Document();
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// フォントのロード
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final fontData = await rootBundle.load("assets/fonts/ipaexg.ttf");
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final ttf = pw.Font.ttf(fontData);
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final boldTtf = pw.Font.ttf(fontData); // IPAexGはウェイトが1つなので同じものを使用
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// 自社情報をロード
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final MasterRepository masterRepository = MasterRepository();
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final Company company = await masterRepository.loadCompany();
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final dateFormatter = DateFormat('yyyy年MM月dd日');
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final amountFormatter = NumberFormat("¥#,###"); // ￥記号を付ける
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// 帳票の種類に応じたタイトルと接尾辞
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final String docTitle = invoice.type.label;
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final String honorific = " 御中"; // 宛名の敬称 (estimateでもinvoiceでも共通化)
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pdf.addPage(
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pw.MultiPage(
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pageFormat: PdfPageFormat.a4,
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margin: const pw.EdgeInsets.all(32),
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theme: pw.ThemeData.withFont(base: ttf, bold: boldTtf),
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build: (context) => [
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// タイトル
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pw.Header(
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level: 0,
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child: pw.Row(
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mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
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children: [
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pw.Text(docTitle, style: pw.TextStyle(fontSize: 28, fontWeight: pw.FontWeight.bold)),
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pw.Column(
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crossAxisAlignment: pw.CrossAxisAlignment.end,
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children: [
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pw.Text("管理番号: ${invoice.invoiceNumber}"),
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pw.Text("発行日: ${dateFormatter.format(invoice.date)}"),
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],
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),
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],
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),
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),
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pw.SizedBox(height: 20),
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// 宛名と自社情報
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pw.Row(
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crossAxisAlignment: pw.CrossAxisAlignment.start,
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children: [
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pw.Expanded(
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child: pw.Column(
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crossAxisAlignment: pw.CrossAxisAlignment.start,
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children: [
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pw.Text("${invoice.customer.formalName}$honorific",
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style: const pw.TextStyle(fontSize: 18)),
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if (invoice.customer.department != null && invoice.customer.department!.isNotEmpty)
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pw.Padding(
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padding: const pw.EdgeInsets.only(top: 4),
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child: pw.Text(invoice.customer.department!),
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),
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pw.SizedBox(height: 10),
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pw.Text(invoice.type == DocumentType.estimate
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? "下記の通り、御見積申し上げます。"
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: "下記の通り、ご請求申し上げます。"),
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],
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),
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),
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pw.Expanded(
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child: pw.Column(
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crossAxisAlignment: pw.CrossAxisAlignment.end,
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children: [
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pw.Text(company.formalName, style: pw.TextStyle(fontSize: 14, fontWeight: pw.FontWeight.bold)),
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if (company.zipCode != null && company.zipCode!.isNotEmpty) pw.Text(company.zipCode!),
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if (company.address != null && company.address!.isNotEmpty) pw.Text(company.address!),
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if (company.tel != null && company.tel!.isNotEmpty) pw.Text(company.tel!),
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if (company.registrationNumber != null && company.registrationNumber!.isNotEmpty) pw.Text(company.registrationNumber! ),
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],
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),
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),
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],
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),
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pw.SizedBox(height: 30),
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// 合計金額表示
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pw.Container(
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padding: const pw.EdgeInsets.all(8),
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decoration: const pw.BoxDecoration(color: PdfColors.grey200),
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child: pw.Row(
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mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
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children: [
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pw.Text("${docTitle}金額合計 (税込)", style: const pw.TextStyle(fontSize: 16)),
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pw.Text("${amountFormatter.format(invoice.totalAmount)} -",
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style: pw.TextStyle(fontSize: 20, fontWeight: pw.FontWeight.bold)),
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],
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),
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),
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pw.SizedBox(height: 20),
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// 明細テーブル
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pw.TableHelper.fromTextArray(
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headerStyle: pw.TextStyle(fontWeight: pw.FontWeight.bold),
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headerDecoration: const pw.BoxDecoration(color: PdfColors.grey300),
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cellHeight: 30,
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cellAlignments: {
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0: pw.Alignment.centerLeft,
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1: pw.Alignment.centerRight,
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2: pw.Alignment.centerRight,
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3: pw.Alignment.centerRight,
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},
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headers: ["品名 / 項目", "数量", "単価", "金額"],
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data: List<List<String>>.generate(
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invoice.items.length,
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(index) {
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final item = invoice.items[index];
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return [
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item.description,
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item.quantity.toString(),
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amountFormatter.format(item.unitPrice),
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amountFormatter.format(item.subtotal),
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];
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},
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),
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),
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// 計算内訳
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pw.Row(
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mainAxisAlignment: pw.MainAxisAlignment.end,
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children: [
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pw.Container(
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width: 200,
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child: pw.Column(
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children: [
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pw.SizedBox(height: 10),
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_buildSummaryRow("小計 (税抜)", amountFormatter.format(invoice.subtotal)),
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_buildSummaryRow("消費税 (10%)", amountFormatter.format(invoice.tax)),
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pw.Divider(),
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_buildSummaryRow("合計", amountFormatter.format(invoice.totalAmount), isBold: true),
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],
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),
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),
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],
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),
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// 備考
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if (invoice.notes != null && invoice.notes!.isNotEmpty) ...[
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pw.SizedBox(height: 40),
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pw.Text("備考:", style: pw.TextStyle(fontWeight: pw.FontWeight.bold)),
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pw.Container(
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width: double.infinity,
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padding: const pw.EdgeInsets.all(8),
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decoration: pw.BoxDecoration(border: pw.Border.all(color: PdfColors.grey400)),
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child: pw.Text(invoice.notes!)),
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],
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],
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footer: (context) => pw.Container(
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alignment: pw.Alignment.centerRight,
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margin: const pw.EdgeInsets.only(top: 16),
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child: pw.Text(
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"Page ${context.pageNumber} / ${context.pagesCount}",
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style: const pw.TextStyle(color: PdfColors.grey),
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),
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),
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),
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);
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final Uint8List bytes = await pdf.save();
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final String hash = sha256.convert(bytes).toString().substring(0, 8);
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final String dateFileStr = DateFormat('yyyyMMdd').format(invoice.date);
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String fileName = "${invoice.type.name}_${dateFileStr}_${invoice.customer.formalName}_$hash.pdf";
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final directory = await getExternalStorageDirectory();
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if (directory == null) return null;
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final file = File("${directory.path}/$fileName");
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await file.writeAsBytes(bytes);
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return file.path;
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} catch (e) {
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debugPrint("PDF Generation Error: $e");
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return null;
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}
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}
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/// ポケットサーマルプリンタ向けの58mmレシートPDFを生成して印刷ダイアログを表示する
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Future<void> printThermalReceipt(Invoice invoice) async {
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try {
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final fontData = await rootBundle.load("assets/fonts/ipaexg.ttf");
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final ttf = pw.Font.ttf(fontData);
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final amountFormatter = NumberFormat("¥#,###"); // ￥記号を付ける
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// 自社情報をロード
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final MasterRepository masterRepository = MasterRepository();
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final Company company = await masterRepository.loadCompany();
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final doc = pw.Document();
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doc.addPage(
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pw.Page(
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// 58mm幅のサーマルプリンタ向け設定 (約164pt)
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pageFormat: const PdfPageFormat(58 * PdfPageFormat.mm, double.infinity, marginAll: 2 * PdfPageFormat.mm),
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theme: pw.ThemeData.withFont(base: ttf),
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build: (pw.Context context) {
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return pw.Column(
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crossAxisAlignment: pw.CrossAxisAlignment.start,
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children: [
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pw.Center(
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child: pw.Text(invoice.type.label, style: pw.TextStyle(fontSize: 16, fontWeight: pw.FontWeight.bold)),
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),
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pw.SizedBox(height: 5),
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pw.Text("${invoice.customer.formalName} 様", style: const pw.TextStyle(fontSize: 10)),
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pw.Divider(thickness: 1, borderStyle: pw.BorderStyle.dashed),
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pw.SizedBox(height: 5),
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pw.Center(
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child: pw.Text(amountFormatter.format(invoice.totalAmount),
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style: pw.TextStyle(fontSize: 18, fontWeight: pw.FontWeight.bold)),
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),
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pw.Center(child: pw.Text("(うち消費税 ${amountFormatter.format(invoice.tax)})", style: const pw.TextStyle(fontSize: 8))),
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pw.SizedBox(height: 10),
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pw.Text("但し、お品代として", style: const pw.TextStyle(fontSize: 9)),
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pw.Text("上記正に領収いたしました", style: const pw.TextStyle(fontSize: 9)),
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pw.SizedBox(height: 10),
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// 明細簡易表示
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pw.Text("--- 明細 ---\n", style: const pw.TextStyle(fontSize: 8)),
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...invoice.items.map((item) => pw.Row(
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mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
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children: [
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pw.Expanded(child: pw.Text(item.description, style: const pw.TextStyle(fontSize: 8))),
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pw.Text("x${item.quantity} ", style: const pw.TextStyle(fontSize: 8)),
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pw.Text(amountFormatter.format(item.subtotal), style: const pw.TextStyle(fontSize: 8)),
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],
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)),
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pw.Divider(thickness: 0.5),
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pw.SizedBox(height: 5),
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pw.Align(
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alignment: pw.Alignment.centerRight,
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child: pw.Column(
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crossAxisAlignment: pw.CrossAxisAlignment.end,
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children: [
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pw.Text(company.formalName, style: const pw.TextStyle(fontSize: 9)),
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pw.Text(DateFormat('yyyy/MM/dd HH:mm').format(invoice.date), style: const pw.TextStyle(fontSize: 7)),
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pw.Text("No: ${invoice.invoiceNumber}", style: const pw.TextStyle(fontSize: 7)),
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],
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),
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),
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pw.SizedBox(height: 10),
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pw.Center(child: pw.Text("ありがとうございました", style: const pw.TextStyle(fontSize: 8))),
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pw.SizedBox(height: 20), // 切り取り用の余白
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],
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);
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},
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),
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);
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// 印刷ダイアログを表示
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await Printing.layoutPdf(
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onLayout: (PdfPageFormat format) async => doc.save(),
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name: "${invoice.type.name}_${invoice.invoiceNumber}",
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);
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} catch (e) {
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debugPrint("Thermal Print Error: $e");
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}
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}
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pw.Widget _buildSummaryRow(String label, String value, {bool isBold = false}) {
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final style = pw.TextStyle(fontSize: 12, fontWeight: isBold ? pw.FontWeight.bold : null);
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return pw.Padding(
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padding: const pw.EdgeInsets.symmetric(vertical: 2),
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child: pw.Row(
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mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
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children: [
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pw.Text(label, style: style),
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pw.Text(value, style: style),
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],
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),
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);
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}
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