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

This fixes issue #373

src/Services/LabelSystem/LabelBarcodeGenerator.php

@@ -0,0 +1,102 @@
+<?php
+/*
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ *  Copyright (C) 2019 - 2022 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);
+
+/**
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ * Copyright (C) 2019 - 2022 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/>.
+ */
+
+namespace App\Services\LabelSystem;
+
+use App\Entity\Base\AbstractDBElement;
+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 LabelBarcodeGenerator
+{
+    public function __construct(private readonly BarcodeContentGenerator $barcodeContentGenerator, private readonly BarcodeHelper $barcodeHelper)
+    {
+    }
+
+    /**
+     * Generate the barcode for the given label as HTML image tag.
+     * @param  LabelOptions  $options
+     * @param  AbstractDBElement  $target
+     * @return string|null
+     */
+    public function generateHTMLBarcode(LabelOptions $options, AbstractDBElement $target): ?string
+    {
+        if ($options->getBarcodeType() === BarcodeType::NONE) {
+            return null;
+        }
+
+        return $this->barcodeHelper->barcodeAsHTML($this->getContent($options, $target), $options->getBarcodeType());
+    }
+
+    /**
+     * 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
+    {
+        $barcode = $options->getBarcodeType();
+        return match (true) {
+            $barcode->is2D() => $this->barcodeContentGenerator->getURLContent($target),
+            $barcode->is1D() => $this->barcodeContentGenerator->get1DBarcodeContent($target),
+            $barcode === BarcodeType::NONE => null,
+            default => throw new InvalidArgumentException('Unknown label type!'),
+        };
+    }
+}