Refactor code structure for improved readability and maintainability

2026-05-06 07:37:59 +02:00
parent e4f201ea36
commit 969dafdbc6
273 changed files with 11357 additions and 39 deletions
@@ -0,0 +1,64 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.downloadAndOptimizeImage = downloadAndOptimizeImage;
+const fs = require("fs");
+const path = require("path");
+const sharp = require("sharp");
+const uuid_1 = require("uuid");
+const BLOCKED_HOSTNAMES = /^(localhost|127\.|10\.|172\.(1[6-9]|2\d|3[01])\.|192\.168\.|0\.0\.0\.0|::1|fc00:|fe80:)/i;
+async function downloadAndOptimizeImage(sourceUrl, destDir) {
+    const raw = sourceUrl.trim();
+    const protocolNormalized = raw.startsWith('//') ? `https:${raw}` : raw;
+    let parsedUrl;
+    try {
+        parsedUrl = new URL(protocolNormalized);
+    }
+    catch {
+        throw new Error('Ogiltig bild-URL');
+    }
+    if (parsedUrl.protocol !== 'https:') {
+        throw new Error('Bild-URL måste använda https://');
+    }
+    const hostname = parsedUrl.hostname;
+    if (BLOCKED_HOSTNAMES.test(hostname)) {
+        throw new Error('Bild-URL pekar på ett blockerat nätverk');
+    }
+    const controller = new AbortController();
+    const timeout = setTimeout(() => controller.abort(), 10_000);
+    let response;
+    try {
+        response = await fetch(parsedUrl.toString(), {
+            signal: controller.signal,
+            headers: { 'User-Agent': 'Mozilla/5.0 (compatible; RecipeApp/1.0)' },
+        });
+    }
+    finally {
+        clearTimeout(timeout);
+    }
+    if (!response.ok) {
+        throw new Error(`HTTP ${response.status} vid nedladdning av bild`);
+    }
+    const contentType = response.headers.get('content-type') ?? '';
+    if (!contentType.startsWith('image/')) {
+        throw new Error(`Ogiltig content-type: ${contentType}`);
+    }
+    const arrayBuffer = await response.arrayBuffer();
+    if (arrayBuffer.byteLength > 5 * 1024 * 1024) {
+        throw new Error('Bilden är för stor (max 5 MB)');
+    }
+    const imageBuffer = Buffer.from(arrayBuffer);
+    if (!fs.existsSync(destDir)) {
+        fs.mkdirSync(destDir, { recursive: true });
+    }
+    const filename = `${(0, uuid_1.v4)()}.jpg`;
+    const outputPath = path.join(destDir, filename);
+    await sharp(imageBuffer)
+        .resize(1200, 800, {
+        fit: 'inside',
+        withoutEnlargement: true,
+    })
+        .jpeg({ quality: 80 })
+        .toFile(outputPath);
+    return `/images/${filename}`;
+}
+//# sourceMappingURL=download-image.js.map