Added label placeholders to add a barcode version of the IPN to a label

This fixes issue #373

src/Services/LabelSystem/Barcodes/BarcodeContentGenerator.php

@@ -76,11 +76,11 @@ final class BarcodeContentGenerator
     {
         $type = $this->classToString(self::URL_MAP, $target);
 
-        return  $this->urlGenerator->generate('scan_qr', [
-    'type' => $type,
+        return $this->urlGenerator->generate('scan_qr', [
+            'type' => $type,
             'id' => $target->getID() ?? 0,
             '_locale' => null,
-], UrlGeneratorInterface::ABSOLUTE_URL);
+        ], UrlGeneratorInterface::ABSOLUTE_URL);
     }
 
     /**

src/Services/LabelSystem/Barcodes/BarcodeHelper.php

@@ -0,0 +1,96 @@
+<?php
+/*
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ *  Copyright (C) 2019 - 2023 Jan Böhmer (https://github.com/jbtronics)
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+declare(strict_types=1);
+
+
+namespace App\Services\LabelSystem\Barcodes;
+
+use App\Entity\LabelSystem\BarcodeType;
+use Com\Tecnick\Barcode\Barcode;
+
+/**
+ * This function is used to generate barcodes of various types using arbitrary (text) content.
+ */
+class BarcodeHelper
+{
+
+    /**
+     * Generates a barcode with the given content and type and returns it as SVG string.
+     * @param  string  $content
+     * @param  BarcodeType  $type
+     * @return string
+     */
+    public function barcodeAsSVG(string $content, BarcodeType $type): string
+    {
+        $barcode = new Barcode();
+
+        $type_str = match ($type) {
+            BarcodeType::NONE => throw new \InvalidArgumentException('Barcode type must not be NONE! This would make no sense...'),
+            BarcodeType::QR => 'QRCODE',
+            BarcodeType::DATAMATRIX => 'DATAMATRIX',
+            BarcodeType::CODE39 => 'C39',
+            BarcodeType::CODE93 => 'C93',
+            BarcodeType::CODE128 => 'C128A',
+        };
+
+        return $barcode->getBarcodeObj($type_str, $content)->getSvgCode();
+    }
+
+    /**
+     * Generates a barcode with the given content and type and returns it as HTML image tag.
+     * @param  string  $content
+     * @param  BarcodeType  $type
+     * @param  string  $width Width of the image tag
+     * @param  string|null  $alt_text The alt text of the image tag. If null, the content is used.
+     * @return string
+     */
+    public function barcodeAsHTML(string $content, BarcodeType $type, string $width = '100%', ?string $alt_text = null): string
+    {
+        $svg = $this->barcodeAsSVG($content, $type);
+        $base64 = $this->dataUri($svg, 'image/svg+xml');
+        $alt_text = $alt_text ?? $content;
+        
+        return '<img src="'.$base64.'" width="'.$width.'" style="min-height: 25px;" alt="'.$alt_text.'"/>';
+    }
+
+    /**
+     * Creates a data URI (RFC 2397).
+     * Based on the Twig implementation from HTMLExtension
+     *
+     * Length validation is not performed on purpose, validation should
+     * be done before calling this filter.
+     *
+     * @return string The generated data URI
+     */
+    private function dataUri(string $data, string $mime): string
+    {
+        $repr = 'data:';
+
+        $repr .= $mime;
+        if (str_starts_with($mime, 'text/')) {
+            $repr .= ','.rawurlencode($data);
+        } else {
+            $repr .= ';base64,'.base64_encode($data);
+        }
+
+        return $repr;
+    }
+}

src/Services/LabelSystem/LabelBarcodeGenerator.php

@@ -46,67 +46,47 @@ use App\Entity\Base\AbstractStructuralDBElement;
 use App\Entity\LabelSystem\BarcodeType;
 use App\Entity\LabelSystem\LabelOptions;
 use App\Services\LabelSystem\Barcodes\BarcodeContentGenerator;
+use App\Services\LabelSystem\Barcodes\BarcodeHelper;
 use Com\Tecnick\Barcode\Barcode;
 use InvalidArgumentException;
 
 /**
  * @see \App\Tests\Services\LabelSystem\BarcodeGeneratorTest
  */
-final class BarcodeGenerator
+final class LabelBarcodeGenerator
 {
-    public function __construct(private readonly BarcodeContentGenerator $barcodeContentGenerator)
+    public function __construct(private readonly BarcodeContentGenerator $barcodeContentGenerator, private readonly BarcodeHelper $barcodeHelper)
     {
     }
 
-    public function generateHTMLBarcode(LabelOptions $options, object $target): ?string
-    {
-        $svg = $this->generateSVG($options, $target);
-        $base64 = $this->dataUri($svg, 'image/svg+xml');
-        return '<img src="'.$base64.'" width="100%" style="min-height: 25px;" alt="'. $this->getContent($options, $target) . '" />';
-    }
-
-     /**
-     * Creates a data URI (RFC 2397).
-     * Based on the Twig implementaion from HTMLExtension
-     *
-     * Length validation is not performed on purpose, validation should
-     * be done before calling this filter.
-     *
-     * @return string The generated data URI
+    /**
+     * Generate the barcode for the given label as HTML image tag.
+     * @param  LabelOptions  $options
+     * @param  AbstractDBElement  $target
+     * @return string|null
      */
-    private function dataUri(string $data, string $mime): string
+    public function generateHTMLBarcode(LabelOptions $options, AbstractDBElement $target): ?string
     {
-        $repr = 'data:';
-
-        $repr .= $mime;
-        if (str_starts_with($mime, 'text/')) {
-            $repr .= ','.rawurlencode($data);
-        } else {
-            $repr .= ';base64,'.base64_encode($data);
-        }
-
-        return $repr;
-    }
-
-    public function generateSVG(LabelOptions $options, object $target): ?string
-    {
-        $barcode = new Barcode();
-
-        $type = match ($options->getBarcodeType()) {
-            BarcodeType::NONE => null,
-            BarcodeType::QR => 'QRCODE',
-            BarcodeType::DATAMATRIX => 'DATAMATRIX',
-            BarcodeType::CODE39 => 'C39',
-            BarcodeType::CODE93 => 'C93',
-            BarcodeType::CODE128 => 'C128A',
-        };
-
-        if ($type === null) {
+        if ($options->getBarcodeType() === BarcodeType::NONE) {
             return null;
         }
 
+        return $this->barcodeHelper->barcodeAsHTML($this->getContent($options, $target), $options->getBarcodeType());
+    }
 
-        return $barcode->getBarcodeObj($type, $this->getContent($options, $target))->getSvgCode();
+    /**
+     * Generate the barcode for the given label as SVG string.
+     * @param  LabelOptions  $options
+     * @param  AbstractDBElement  $target
+     * @return string|null
+     */
+    public function generateSVG(LabelOptions $options, AbstractDBElement $target): ?string
+    {
+        if ($options->getBarcodeType() === BarcodeType::NONE) {
+            return null;
+        }
+
+        return $this->barcodeHelper->barcodeAsSVG($this->getContent($options, $target), $options->getBarcodeType());
     }
 
     public function getContent(LabelOptions $options, AbstractDBElement $target): ?string

src/Services/LabelSystem/LabelHTMLGenerator.php

@@ -53,7 +53,7 @@ use Twig\Error\Error;
 
 final class LabelHTMLGenerator
 {
-    public function __construct(private readonly ElementTypeNameGenerator $elementTypeNameGenerator, private readonly LabelTextReplacer $replacer, private readonly Environment $twig, private readonly BarcodeGenerator $barcodeGenerator, private readonly SandboxedTwigProvider $sandboxedTwigProvider, private readonly Security $security, private readonly string $partdb_title)
+    public function __construct(private readonly ElementTypeNameGenerator $elementTypeNameGenerator, private readonly LabelTextReplacer $replacer, private readonly Environment $twig, private readonly LabelBarcodeGenerator $barcodeGenerator, private readonly SandboxedTwigProvider $sandboxedTwigProvider, private readonly Security $security, private readonly string $partdb_title)
     {
     }
 

src/Services/LabelSystem/PlaceholderProviders/BarcodeProvider.php

@@ -24,12 +24,18 @@ namespace App\Services\LabelSystem\PlaceholderProviders;
 
 use App\Entity\LabelSystem\BarcodeType;
 use App\Entity\LabelSystem\LabelOptions;
-use App\Services\LabelSystem\BarcodeGenerator;
+use App\Entity\Parts\Part;
+use App\Entity\Parts\PartLot;
+use App\Services\LabelSystem\Barcodes\BarcodeHelper;
+use App\Services\LabelSystem\LabelBarcodeGenerator;
 use App\Services\LabelSystem\Barcodes\BarcodeContentGenerator;
+use Com\Tecnick\Barcode\Exception;
 
 final class BarcodeProvider implements PlaceholderProviderInterface
 {
-    public function __construct(private readonly BarcodeGenerator $barcodeGenerator, private readonly BarcodeContentGenerator $barcodeContentGenerator)
+    public function __construct(private readonly LabelBarcodeGenerator $barcodeGenerator,
+        private readonly BarcodeContentGenerator $barcodeContentGenerator,
+        private readonly BarcodeHelper $barcodeHelper)
     {
     }
 
@@ -69,6 +75,36 @@ final class BarcodeProvider implements PlaceholderProviderInterface
             return $this->barcodeGenerator->generateHTMLBarcode($label_options, $label_target);
         }
 
+        if ($label_target instanceof Part || $label_target instanceof PartLot) {
+            if ($label_target instanceof PartLot) {
+                $label_target = $label_target->getPart();
+            }
+
+            if ($label_target === null || $label_target->getIPN() === null || $label_target->getIPN() === '') {
+                //Replace with empty result, if no IPN is set
+                return '';
+            }
+
+            try {
+                //Add placeholders for the IPN barcode
+                if ('[[IPN_BARCODE_C39]]' === $placeholder) {
+                    return $this->barcodeHelper->barcodeAsHTML($label_target->getIPN(), BarcodeType::CODE39);
+                }
+                if ('[[IPN_BARCODE_C128]]' === $placeholder) {
+                    return $this->barcodeHelper->barcodeAsHTML($label_target->getIPN(), BarcodeType::CODE128);
+                }
+                if ('[[IPN_BARCODE_QR]]' === $placeholder) {
+                    return $this->barcodeHelper->barcodeAsHTML($label_target->getIPN(), BarcodeType::QR);
+                }
+            } catch (Exception $e) {
+                //If an error occurs, output it
+                return '<b>IPN Barcode ERROR!</b>: '.$e->getMessage();
+            }
+        }
+
+
+
+
         return null;
     }
 }