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