363 lines
14 KiB
Dart
363 lines
14 KiB
Dart
import 'dart:io';
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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 '../models/invoice_models.dart';
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import 'company_repository.dart';
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import 'activity_log_repository.dart';
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/// PDFドキュメントの構築（プレビューと実保存の両方で使用）
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Future<pw.Document> buildInvoiceDocument(Invoice invoice) async {
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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 ipaex = pw.Font.ttf(fontData);
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final dateFormatter = DateFormat('yyyy年MM月dd日');
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final amountFormatter = NumberFormat("#,###");
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// 自社情報の取得
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final companyRepo = CompanyRepository();
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final companyInfo = await companyRepo.getCompanyInfo();
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// 印影画像のロード
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pw.MemoryImage? sealImage;
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if (companyInfo.sealPath != null) {
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final file = File(companyInfo.sealPath!);
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if (await file.exists()) {
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final bytes = await file.readAsBytes();
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sealImage = pw.MemoryImage(bytes);
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}
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}
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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(
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base: ipaex,
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bold: ipaex,
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italic: ipaex,
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boldItalic: ipaex,
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).copyWith(
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defaultTextStyle: pw.TextStyle(fontFallback: [ipaex]),
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),
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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(invoice.documentTypeName, 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("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.Container(
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decoration: const pw.BoxDecoration(
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border: pw.Border(bottom: pw.BorderSide(width: 1)),
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),
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child: pw.Text(invoice.customer.invoiceName,
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style: const pw.TextStyle(fontSize: 18)),
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),
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pw.SizedBox(height: 10),
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pw.Text(invoice.documentType == DocumentType.receipt
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? "上記の金額を正に領収いたしました。"
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: (invoice.documentType == DocumentType.estimation
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? "下記の通り、お見積り申し上げます。"
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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.Stack(
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alignment: pw.Alignment.topRight,
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children: [
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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(companyInfo.name, style: pw.TextStyle(fontSize: 14, fontWeight: pw.FontWeight.bold)),
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if (companyInfo.zipCode != null) pw.Text("〒${companyInfo.zipCode}"),
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if (companyInfo.address != null) pw.Text(companyInfo.address!),
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if (companyInfo.tel != null) pw.Text("TEL: ${companyInfo.tel}"),
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if (companyInfo.registrationNumber != null && companyInfo.registrationNumber!.isNotEmpty)
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pw.Text("登録番号: ${companyInfo.registrationNumber!}", style: const pw.TextStyle(fontSize: 10)),
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],
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),
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if (sealImage != null)
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pw.Positioned(
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right: 10,
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top: 0,
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child: pw.Opacity(
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opacity: 0.8,
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child: pw.Image(sealImage, width: 40, height: 40),
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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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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(
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invoice.documentType == DocumentType.receipt
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? (companyInfo.taxDisplayMode == 'hidden' ? "領収金額" : "領収金額 (税込)")
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: (companyInfo.taxDisplayMode == 'hidden' ? "合計金額" : "合計金額 (税込)"),
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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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// 明細テーブル
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pw.Table(
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border: pw.TableBorder.all(color: PdfColors.grey300),
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columnWidths: {
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0: const pw.FlexColumnWidth(4),
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1: const pw.FixedColumnWidth(50),
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2: const pw.FixedColumnWidth(80),
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3: const pw.FixedColumnWidth(80),
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},
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children: [
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// ヘッダー
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pw.TableRow(
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decoration: const pw.BoxDecoration(color: PdfColors.grey300),
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children: [
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pw.Padding(padding: const pw.EdgeInsets.all(4), child: pw.Text("品名 / 項目", style: pw.TextStyle(fontWeight: pw.FontWeight.bold))),
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pw.Padding(padding: const pw.EdgeInsets.all(4), child: pw.Text("数量", style: pw.TextStyle(fontWeight: pw.FontWeight.bold), textAlign: pw.TextAlign.right)),
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pw.Padding(padding: const pw.EdgeInsets.all(4), child: pw.Text("単価", style: pw.TextStyle(fontWeight: pw.FontWeight.bold), textAlign: pw.TextAlign.right)),
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pw.Padding(padding: const pw.EdgeInsets.all(4), child: pw.Text("金額", style: pw.TextStyle(fontWeight: pw.FontWeight.bold), textAlign: pw.TextAlign.right)),
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],
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),
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// データ行
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...invoice.items.map((item) {
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return pw.TableRow(
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children: [
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pw.Padding(
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padding: const pw.EdgeInsets.all(4),
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child: _parseMarkdown(item.description),
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),
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pw.Padding(padding: const pw.EdgeInsets.all(4), child: pw.Text(item.quantity.toString(), textAlign: pw.TextAlign.right)),
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pw.Padding(padding: const pw.EdgeInsets.all(4), child: pw.Text(amountFormatter.format(item.unitPrice), textAlign: pw.TextAlign.right)),
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pw.Padding(padding: const pw.EdgeInsets.all(4), child: pw.Text(amountFormatter.format(item.subtotal), textAlign: pw.TextAlign.right)),
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],
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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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if (companyInfo.taxDisplayMode == 'normal')
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_buildSummaryRow("消費税 (${(invoice.taxRate * 100).toInt()}%)", amountFormatter.format(invoice.tax)),
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if (companyInfo.taxDisplayMode == 'text_only')
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_buildSummaryRow("消費税", "（税別）"),
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pw.Divider(),
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_buildSummaryRow("合計", "￥${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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// 備考
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if (invoice.notes != null && invoice.notes!.isNotEmpty) ...[
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pw.SizedBox(height: 10),
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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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pw.SizedBox(height: 20),
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// 監査用ハッシュとQRコード
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pw.Row(
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mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
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crossAxisAlignment: pw.CrossAxisAlignment.end,
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children: [
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pw.Column(
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crossAxisAlignment: pw.CrossAxisAlignment.start,
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children: [
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pw.Text("Verification Hash (SHA256):", style: pw.TextStyle(fontSize: 8, color: PdfColors.grey700)),
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pw.Text(invoice.contentHash, style: pw.TextStyle(fontSize: 10, fontWeight: pw.FontWeight.bold, color: PdfColors.grey700)),
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],
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),
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pw.Container(
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width: 50,
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height: 50,
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child: pw.BarcodeWidget(
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barcode: pw.Barcode.qrCode(),
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data: invoice.contentHash,
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drawText: false,
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),
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),
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],
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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} / ${context.pagesCount}",
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style: const pw.TextStyle(color: PdfColors.grey),
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),
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),
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),
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);
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return pdf;
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}
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/// A4サイズのプロフェッショナルな伝票PDFを生成し、保存する
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Future<String?> generateInvoicePdf(Invoice invoice) async {
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try {
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final pdf = await buildInvoiceDocument(invoice);
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final String hash = invoice.contentHash;
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final String dateStr = DateFormat('yyyyMMdd').format(invoice.date);
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final String amountStr = NumberFormat("#,###").format(invoice.totalAmount);
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final String subjectStr = invoice.subject?.isNotEmpty == true ? "_${invoice.subject}" : "";
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// {日付}({タイプ}){顧客名}_{案件}_{金額}_{HASH下8桁}.pdf
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// 顧客名から敬称を除去
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String safeCustomerName = invoice.customerNameForDisplay
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.replaceAll('株式会社', '')
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.replaceAll('（株）', '')
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.replaceAll('(株)', '')
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.replaceAll('有限会社', '')
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.replaceAll('（有）', '')
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.replaceAll('(有)', '')
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.replaceAll('合同会社', '')
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.replaceAll('（同）', '')
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.replaceAll('(同)', '')
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.trim();
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String fileName = "${dateStr}(${invoice.documentTypeName})${safeCustomerName}${subjectStr}_${amountStr}円_$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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final Uint8List bytes = await pdf.save();
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await file.writeAsBytes(bytes);
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// 生成をログに記録
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final logRepo = ActivityLogRepository();
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await logRepo.logAction(
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action: "GENERATE_PDF",
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targetType: "INVOICE",
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targetId: invoice.id,
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details: "PDF生成: $fileName (${invoice.documentTypeName})",
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);
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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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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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pw.Widget _parseMarkdown(String text) {
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final lines = text.split('\n');
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final List<pw.Widget> widgets = [];
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for (final line in lines) {
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String content = line;
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pw.EdgeInsets padding = const pw.EdgeInsets.only(bottom: 2);
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pw.Widget? prefix;
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// 箇条書き / インデント
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if (content.startsWith('* ') || content.startsWith('- ')) {
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content = content.substring(2);
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prefix = pw.Padding(padding: const pw.EdgeInsets.only(right: 4), child: pw.Text('•'));
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} else if (content.startsWith(' ')) {
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padding = padding.copyWith(left: 10);
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}
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// 太字 (**text**) - 簡易実装
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final List<pw.TextSpan> spans = [];
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final parts = content.split('**');
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for (int i = 0; i < parts.length; i++) {
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spans.add(pw.TextSpan(
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text: parts[i],
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style: i % 2 == 1 ? pw.TextStyle(fontWeight: pw.FontWeight.bold) : null,
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));
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}
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widgets.add(
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pw.Padding(
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padding: padding,
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child: pw.Row(
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crossAxisAlignment: pw.CrossAxisAlignment.start,
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children: [
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if (prefix != null) prefix,
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pw.Expanded(
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child: pw.RichText(text: pw.TextSpan(children: spans, style: const pw.TextStyle(fontSize: 10))),
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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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return pw.Column(crossAxisAlignment: pw.CrossAxisAlignment.start, children: widgets);
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}
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