Added basic support for label barcodes (C39 and QR).

src/Services/LabelSystem/Barcodes/BarcodeContentGenerator.php

@@ -0,0 +1,101 @@
+<?php
+/**
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ * Copyright (C) 2019 - 2020 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\Barcodes;
+
+
+use App\Entity\Base\AbstractDBElement;
+use App\Entity\Parts\Manufacturer;
+use App\Entity\Parts\Part;
+use App\Entity\Parts\PartLot;
+use App\Entity\Parts\Storelocation;
+use App\Entity\Parts\Supplier;
+use App\Exceptions\EntityNotSupportedException;
+use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
+
+class BarcodeContentGenerator
+{
+    protected $urlGenerator;
+
+    public const PREFIX_MAP = [
+        Part::class => 'P',
+        PartLot::class => 'L',
+        Storelocation::class => 'S'
+    ];
+
+    protected const URL_MAP = [
+        Part::class => 'part',
+        PartLot::class => 'lot',
+        Storelocation::class => 'location',
+    ];
+
+    public function __construct(UrlGeneratorInterface $urlGenerator)
+    {
+        $this->urlGenerator = $urlGenerator;
+    }
+
+    /**
+     * Generates a fixed URL to the given Element that can be embedded in a 2D code (e.g. QR code).
+     * @param  AbstractDBElement  $target
+     * @return string
+     */
+    public function getURLContent(AbstractDBElement $target): string
+    {
+        if ($target instanceof Part) {
+            $type = 'part';
+        } else {
+            throw  new EntityNotSupportedException();
+        }
+
+        return  $this->urlGenerator->generate('scan_qr', [
+            'type' => $type,
+            'id' => $target->getID(),
+        ], UrlGeneratorInterface::ABSOLUTE_URL);
+    }
+
+    /**
+     * Returns a Code that can be used in a 1D barcode.
+     * The return value has a format of "L-000123"
+     * @param  AbstractDBElement  $target
+     * @return string
+     */
+    public function get1DBarcodeContent(AbstractDBElement $target): string
+    {
+        $prefix = $this->classToString(self::PREFIX_MAP, $target);
+        $id = sprintf('%06d', $target->getID());
+        return $prefix . '-' . $id;
+    }
+
+    protected function classToString(array $map, object $target): string
+    {
+        $class = get_class($target);
+        if (isset($map[$class])) {
+            return $map[$class];
+        }
+
+        foreach($map as $class => $string) {
+            if (is_a($target, $class)) {
+                return $string;
+            }
+        }
+
+        throw new \InvalidArgumentException('Unknown object class ' . get_class($target));
+    }
+}