APP als Hybrid Version - Anbindung an API

backend/app/Http/Controllers/Api/SettingsMediaController.php

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+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Http\Controllers\Controller;
+use App\Http\Requests\StoreSettingsMediaRequest;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+use Illuminate\Http\Response;
+use Illuminate\Http\UploadedFile;
+use Illuminate\Support\Facades\Storage;
+use RuntimeException;
+
+class SettingsMediaController extends Controller
+{
+    private const BACKGROUND_MAX_SIDE = 1600;
+
+    private const BACKGROUND_QUALITY = 86;
+
+    public function store(StoreSettingsMediaRequest $request): JsonResponse
+    {
+        $processed = $this->processBackground($request->file('file'));
+        $path = $this->backgroundPath((int) $request->user()->id);
+
+        Storage::disk('local')->put($path, $processed['contents']);
+
+        return response()->json([
+            'data' => [
+                'url' => '/settings/media/background?v='.time(),
+                'width' => $processed['width'],
+                'height' => $processed['height'],
+                'mimeType' => 'image/jpeg',
+                'size' => strlen($processed['contents']),
+            ],
+        ], 201);
+    }
+
+    public function show(Request $request): Response
+    {
+        $path = $this->backgroundPath((int) $request->user()->id);
+
+        abort_unless(Storage::disk('local')->exists($path), 404);
+
+        return response(Storage::disk('local')->get($path), 200, [
+            'Content-Type' => 'image/jpeg',
+            'Cache-Control' => 'private, max-age=604800',
+        ]);
+    }
+
+    public function destroy(Request $request): JsonResponse
+    {
+        Storage::disk('local')->delete($this->backgroundPath((int) $request->user()->id));
+
+        return response()->json(null, 204);
+    }
+
+    private function backgroundPath(int $userId): string
+    {
+        return "settings-media/{$userId}/background.jpg";
+    }
+
+    /**
+     * @return array{contents: string, width: int, height: int}
+     */
+    private function processBackground(UploadedFile $file): array
+    {
+        $source = imagecreatefromstring((string) file_get_contents($file->getRealPath()));
+
+        if (! $source) {
+            throw new RuntimeException('The uploaded background image could not be processed.');
+        }
+
+        $sourceWidth = imagesx($source);
+        $sourceHeight = imagesy($source);
+        $scale = min(1, self::BACKGROUND_MAX_SIDE / max($sourceWidth, $sourceHeight));
+        $width = max(1, (int) round($sourceWidth * $scale));
+        $height = max(1, (int) round($sourceHeight * $scale));
+
+        $canvas = imagecreatetruecolor($width, $height);
+        $background = imagecolorallocate($canvas, 255, 255, 255);
+        imagefilledrectangle($canvas, 0, 0, $width, $height, $background);
+        imagecopyresampled($canvas, $source, 0, 0, 0, 0, $width, $height, $sourceWidth, $sourceHeight);
+
+        imagedestroy($source);
+
+        ob_start();
+        imagejpeg($canvas, null, self::BACKGROUND_QUALITY);
+        $contents = (string) ob_get_clean();
+        imagedestroy($canvas);
+
+        return [
+            'contents' => $contents,
+            'width' => $width,
+            'height' => $height,
+        ];
+    }
+}