"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}`;
}
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