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fix: replace dart:html with conditional imports for cross-platform #15

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fix: replace dart:html with conditional imports for cross-platform #15

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122 changes: 2 additions & 120 deletions frontend/lib/core/utils/print_helper.dart
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,120 +1,2 @@
import 'dart:html' as html;

class PrintHelper {
static void printBarcode({
required String productName,
required String barcode,
required String price,
}) {
final content = '''
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Barcode - $productName</title>
<style>
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', Tahoma, sans-serif; display: flex; justify-content: center; align-items: center; min-height: 100vh; }
.label { border: 2px dashed #ccc; padding: 20px 30px; text-align: center; width: 300px; }
.product-name { font-size: 14px; font-weight: 600; margin-bottom: 10px; }
.barcode { font-family: 'Libre Barcode 128', monospace; font-size: 48px; letter-spacing: 2px; margin: 10px 0; }
.barcode-text { font-family: monospace; font-size: 12px; color: #333; margin-bottom: 8px; }
.price { font-size: 16px; font-weight: 700; }
@media print {
body { margin: 0; }
.label { border: none; }
}
</style>
<link href="https://fonts.googleapis.com/css2?family=Libre+Barcode+128&display=swap" rel="stylesheet">
</head>
<body>
<div class="label">
<div class="product-name">$productName</div>
<div class="barcode">$barcode</div>
<div class="barcode-text">$barcode</div>
<div class="price">EGP $price</div>
</div>
<script>window.onload = function() { setTimeout(function() { window.print(); }, 500); }</script>
</body>
</html>
''';

final blob = html.Blob([content], 'text/html');
final url = html.Url.createObjectUrlFromBlob(blob);
html.window.open(url, '_blank');
}
}

void printReportHtml({required String title, required String tableHtml}) {
final now = DateTime.now();
final dateStr = '${now.year}-${now.month.toString().padLeft(2, '0')}-${now.day.toString().padLeft(2, '0')} ${now.hour.toString().padLeft(2, '0')}:${now.minute.toString().padLeft(2, '0')}';

final content = '''
<!DOCTYPE html>
<html dir="rtl">
<head>
<meta charset="UTF-8">
<title>$title</title>
<style>
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', Tahoma, sans-serif; padding: 10px 15px; color: #000; font-size: 11px; }
.header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid #000; padding-bottom: 8px; margin-bottom: 10px; }
.header h1 { font-size: 14px; color: #000; }
.header .meta { font-size: 9px; color: #333; text-align: right; }
.header .meta p { margin: 1px 0; }
table { width: 100%; border-collapse: collapse; margin-top: 6px; font-size: 10px; }
th { background: #eee; color: #000; font-weight: 600; padding: 4px 6px; border: 1px solid #999; text-align: left; }
td { padding: 3px 6px; border: 1px solid #ccc; }
tr:nth-child(even) { background: #f5f5f5; }
.footer { margin-top: 15px; padding-top: 8px; border-top: 1px solid #999; font-size: 8px; color: #666; text-align: center; }
.section-title { font-size: 11px; font-weight: 600; margin: 10px 0 4px; color: #000; border-left: 2px solid #000; padding-left: 6px; }
@media print {
body { padding: 5px 10px; }
.no-print { display: none; }
}
</style>
</head>
<body>
<div class="header">
<h1>$title</h1>
<div class="meta">
<p><strong>Ceramic Showroom ERP</strong></p>
<p>$dateStr</p>
</div>
</div>
$tableHtml
<div class="footer">Ceramic Showroom ERP &mdash; $dateStr</div>
<script>window.onload = function() { window.print(); }</script>
</body>
</html>
''';

final blob = html.Blob([content], 'text/html');
final url = html.Url.createObjectUrlFromBlob(blob);
html.window.open(url, '_blank');
}

String buildTableHtml({
required List<String> headers,
required List<List<String>> rows,
String? sectionTitle,
}) {
final buffer = StringBuffer();
if (sectionTitle != null) {
buffer.write('<p class="section-title">$sectionTitle</p>');
}
buffer.write('<table><thead><tr>');
for (final h in headers) {
buffer.write('<th>$h</th>');
}
buffer.write('</tr></thead><tbody>');
for (final row in rows) {
buffer.write('<tr>');
for (final cell in row) {
buffer.write('<td>$cell</td>');
}
buffer.write('</tr>');
}
buffer.write('</tbody></table>');
return buffer.toString();
}
export 'print_helper_stub.dart'
if (dart.library.html) 'print_helper_web.dart';
21 changes: 21 additions & 0 deletions frontend/lib/core/utils/print_helper_stub.dart
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,21 @@
class PrintHelper {
static void printBarcode({
required String productName,
required String barcode,
required String price,
}) {
// Printing is only supported on web platform
}
}

void printReportHtml({required String title, required String tableHtml}) {
// Printing is only supported on web platform
}

String buildTableHtml({
required List<String> headers,
required List<List<String>> rows,
String? sectionTitle,
}) {
return '';
}
120 changes: 120 additions & 0 deletions frontend/lib/core/utils/print_helper_web.dart
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,120 @@
import 'dart:html' as html;

class PrintHelper {
static void printBarcode({
required String productName,
required String barcode,
required String price,
}) {
final content = '''
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Barcode - $productName</title>
<style>
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', Tahoma, sans-serif; display: flex; justify-content: center; align-items: center; min-height: 100vh; }
.label { border: 2px dashed #ccc; padding: 20px 30px; text-align: center; width: 300px; }
.product-name { font-size: 14px; font-weight: 600; margin-bottom: 10px; }
.barcode { font-family: 'Libre Barcode 128', monospace; font-size: 48px; letter-spacing: 2px; margin: 10px 0; }
.barcode-text { font-family: monospace; font-size: 12px; color: #333; margin-bottom: 8px; }
.price { font-size: 16px; font-weight: 700; }
@media print {
body { margin: 0; }
.label { border: none; }
}
</style>
<link href="https://fonts.googleapis.com/css2?family=Libre+Barcode+128&display=swap" rel="stylesheet">
</head>
<body>
<div class="label">
<div class="product-name">$productName</div>
<div class="barcode">$barcode</div>
<div class="barcode-text">$barcode</div>
<div class="price">EGP $price</div>
</div>
<script>window.onload = function() { setTimeout(function() { window.print(); }, 500); }</script>
</body>
</html>
''';

final blob = html.Blob([content], 'text/html');
final url = html.Url.createObjectUrlFromBlob(blob);
html.window.open(url, '_blank');
}
}

void printReportHtml({required String title, required String tableHtml}) {
final now = DateTime.now();
final dateStr = '${now.year}-${now.month.toString().padLeft(2, '0')}-${now.day.toString().padLeft(2, '0')} ${now.hour.toString().padLeft(2, '0')}:${now.minute.toString().padLeft(2, '0')}';

final content = '''
<!DOCTYPE html>
<html dir="rtl">
<head>
<meta charset="UTF-8">
<title>$title</title>
<style>
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', Tahoma, sans-serif; padding: 10px 15px; color: #000; font-size: 11px; }
.header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid #000; padding-bottom: 8px; margin-bottom: 10px; }
.header h1 { font-size: 14px; color: #000; }
.header .meta { font-size: 9px; color: #333; text-align: right; }
.header .meta p { margin: 1px 0; }
table { width: 100%; border-collapse: collapse; margin-top: 6px; font-size: 10px; }
th { background: #eee; color: #000; font-weight: 600; padding: 4px 6px; border: 1px solid #999; text-align: left; }
td { padding: 3px 6px; border: 1px solid #ccc; }
tr:nth-child(even) { background: #f5f5f5; }
.footer { margin-top: 15px; padding-top: 8px; border-top: 1px solid #999; font-size: 8px; color: #666; text-align: center; }
.section-title { font-size: 11px; font-weight: 600; margin: 10px 0 4px; color: #000; border-left: 2px solid #000; padding-left: 6px; }
@media print {
body { padding: 5px 10px; }
.no-print { display: none; }
}
</style>
</head>
<body>
<div class="header">
<h1>$title</h1>
<div class="meta">
<p><strong>Ceramic Showroom ERP</strong></p>
<p>$dateStr</p>
</div>
</div>
$tableHtml
<div class="footer">Ceramic Showroom ERP &mdash; $dateStr</div>
<script>window.onload = function() { window.print(); }</script>
</body>
</html>
''';

final blob = html.Blob([content], 'text/html');
final url = html.Url.createObjectUrlFromBlob(blob);
html.window.open(url, '_blank');
}

String buildTableHtml({
required List<String> headers,
required List<List<String>> rows,
String? sectionTitle,
}) {
final buffer = StringBuffer();
if (sectionTitle != null) {
buffer.write('<p class="section-title">$sectionTitle</p>');
}
buffer.write('<table><thead><tr>');
for (final h in headers) {
buffer.write('<th>$h</th>');
}
buffer.write('</tr></thead><tbody>');
for (final row in rows) {
buffer.write('<tr>');
for (final cell in row) {
buffer.write('<td>$cell</td>');
}
buffer.write('</tr>');
}
buffer.write('</tbody></table>');
return buffer.toString();
}