280 lines
10 KiB
Dart
280 lines
10 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 ttf = pw.Font.ttf(fontData);
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final boldTtf = 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(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(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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],
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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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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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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} / ${context.pagesCount}",
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style: const pw.TextStyle(color: PdfColors.grey),
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),
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),
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),
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);
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return pdf;
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}
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/// A4サイズのプロフェッショナルな伝票PDFを生成し、保存する
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Future<String?> generateInvoicePdf(Invoice invoice) async {
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try {
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final pdf = await buildInvoiceDocument(invoice);
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final String hash = invoice.contentHash;
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final String timeStr = DateFormat('yyyyMMdd_HHmmss').format(DateTime.now());
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String fileName = "${invoice.invoiceNumberPrefix}_${invoice.terminalId}_${invoice.id.substring(invoice.id.length - 4)}_${timeStr}_$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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