chore: initial commit Dutra Store POS app
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Onie
167
lib/services/export_service.dart
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167
lib/services/export_service.dart
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import 'dart:io';
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import 'package:flutter/material.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:share_plus/share_plus.dart';
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class ExportService {
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static final ExportService _instance = ExportService._internal();
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factory ExportService() => _instance;
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ExportService._internal();
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Future<String?> exportToPdf(List<Map<String, dynamic>> transactions,
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String storeName, DateTimeRange? dateRange) async {
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try {
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debugPrint('exportToPdf called with ${transactions.length} transactions');
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final pdf = pw.Document();
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pdf.addPage(
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pw.Page(
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build: (context) {
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return pw.Column(
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crossAxisAlignment: pw.CrossAxisAlignment.start,
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children: [
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pw.Text(storeName, style: pw.TextStyle(fontSize: 24, fontWeight: pw.FontWeight.bold)),
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pw.SizedBox(height: 8),
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if (dateRange != null)
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pw.Text('${_formatDate(dateRange.start)} - ${_formatDate(dateRange.end)}',
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style: pw.TextStyle(fontSize: 12)),
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pw.SizedBox(height: 16),
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pw.Table(
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border: pw.TableBorder.all(),
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children: [
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pw.TableRow(
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children: [
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pw.Padding(padding: pw.EdgeInsets.all(8), child: pw.Text('Tanggal', style: pw.TextStyle(fontWeight: pw.FontWeight.bold))),
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pw.Padding(padding: pw.EdgeInsets.all(8), child: pw.Text('ID', style: pw.TextStyle(fontWeight: pw.FontWeight.bold))),
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pw.Padding(padding: pw.EdgeInsets.all(8), child: pw.Text('Total', style: pw.TextStyle(fontWeight: pw.FontWeight.bold))),
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pw.Padding(padding: pw.EdgeInsets.all(8), child: pw.Text('Bayar', style: pw.TextStyle(fontWeight: pw.FontWeight.bold))),
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pw.Padding(padding: pw.EdgeInsets.all(8), child: pw.Text('Kembali', style: pw.TextStyle(fontWeight: pw.FontWeight.bold))),
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],
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),
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for (final tx in transactions)
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pw.TableRow(
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children: [
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pw.Padding(padding: const pw.EdgeInsets.all(8), child: pw.Text(_formatDate(tx['date']))),
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pw.Padding(padding: const pw.EdgeInsets.all(8), child: pw.Text(tx['id'])),
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pw.Padding(padding: const pw.EdgeInsets.all(8), child: pw.Text(tx['total'])),
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pw.Padding(padding: const pw.EdgeInsets.all(8), child: pw.Text(tx['paid'])),
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pw.Padding(padding: const pw.EdgeInsets.all(8), child: pw.Text(tx['change'])),
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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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),
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);
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Directory? directory;
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try {
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directory = await getTemporaryDirectory();
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debugPrint('PDF using temporary directory: ${directory.path}');
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} catch (e) {
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debugPrint('getTemporaryDirectory failed for PDF: $e');
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return null;
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}
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final file = File('${directory.path}/laporan_transaksi_${DateTime.now().millisecondsSinceEpoch}.pdf');
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try {
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await file.writeAsBytes(await pdf.save());
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debugPrint('PDF file written: ${file.path}, exists: ${await file.exists()}');
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} catch (e) {
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debugPrint('Failed to write PDF file: $e');
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return null;
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}
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return file.path;
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} catch (e) {
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debugPrint('exportToPdf error: $e');
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return null;
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}
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}
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Future<String?> exportToCsv(List<Map<String, dynamic>> transactions) async {
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try {
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debugPrint('=== CSV Export Started ===');
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debugPrint('Transactions count: ${transactions.length}');
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if (transactions.isEmpty) {
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debugPrint('No transactions to export');
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return null;
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}
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final buffer = StringBuffer();
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buffer.writeln('Tanggal,ID Transaksi,Total,Bayar,Kembali,Item,Diskon');
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for (final tx in transactions) {
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final date = _formatDate(tx['date']);
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final id = tx['id'];
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final total = tx['total'];
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final paid = tx['paid'];
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final change = tx['change'];
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final items = tx['items'] is List ? (tx['items'] as List).length : (tx['items'] as int? ?? 0);
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final discount = tx['discount'] ?? 0;
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buffer.writeln('$date,$id,$total,$paid,$change,$items,$discount');
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}
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debugPrint('CSV buffer created, length: ${buffer.toString().length}');
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String? filePath;
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try {
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final tempDir = await getTemporaryDirectory();
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debugPrint('Temp dir: ${tempDir.path}');
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final timestamp = DateTime.now().millisecondsSinceEpoch;
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final fileName = 'laporan_transaksi_$timestamp.csv';
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filePath = '${tempDir.path}/$fileName';
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final file = File(filePath);
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await file.writeAsString(buffer.toString());
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debugPrint('CSV file written: $filePath');
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debugPrint('File exists: ${await file.exists()}');
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debugPrint('File size: ${await file.length()}');
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} catch (e) {
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debugPrint('Error creating CSV file: $e');
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return null;
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}
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debugPrint('=== CSV Export Completed Successfully ===');
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return filePath;
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} catch (e) {
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debugPrint('=== CSV Export Failed ===');
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debugPrint('Error: $e');
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debugPrint('Stack trace: ${StackTrace.current}');
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return null;
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}
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}
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Future<void> shareFile(String filePath) async {
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try {
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debugPrint('Sharing file: $filePath');
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final file = File(filePath);
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final exists = await file.exists();
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debugPrint('File exists: $exists, size: ${exists ? await file.length() : 0}');
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if (!exists) {
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debugPrint('File does not exist, cannot share');
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return;
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}
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await Share.shareXFiles([XFile(filePath)], text: 'Laporan Transaksi');
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debugPrint('Share completed');
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} catch (e) {
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debugPrint('shareFile error: $e');
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rethrow;
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}
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}
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String _formatDate(dynamic date) {
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if (date is DateTime) {
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return '${date.day}/${date.month}/${date.year}';
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}
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return date.toString();
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}
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}
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