276 lines
11 KiB
TypeScript
276 lines
11 KiB
TypeScript
/**
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* ShopFiber24 Scraper — German compatible transceiver shop
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*
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* shop.fiber24.net — EUR prices, FO transceiver category.
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*
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* Strategy: The catalog page is fully JS-rendered (BMS/JTL shop system).
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* Product detail pages DO have static Schema.org microdata with real prices.
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*
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* Approach:
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* 1. Fetch sitemap_0.xml.gz → extract all /de product URLs
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* 2. Filter transceiver/optics URLs (keyword match)
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* 3. Fetch each product page → parse itemprop microdata (price, sku, image)
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* 4. Upsert transceiver + price_observation + image_url
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*
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* Rate limited: 1 req/1.5 sec.
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*/
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import { pool, findOrCreateScrapedTransceiver, ensureVendor, upsertPriceObservation } from "../utils/db";
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import { contentHash } from "../utils/hash";
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import * as cheerio from "cheerio";
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import * as zlib from "zlib";
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const BASE = "https://shop.fiber24.net";
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const SITEMAP_URL = "https://shop.fiber24.net/export/sitemap_0.xml.gz";
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const HEADERS = {
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"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36",
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Accept: "text/html,application/xhtml+xml",
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"Accept-Language": "de-DE,de;q=0.9,en;q=0.8",
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};
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interface Product {
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partNumber: string;
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name: string;
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url: string;
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price?: number;
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currency: string;
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imageUrl?: string;
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formFactor: string;
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speed: string;
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speedGbps: number;
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reachLabel?: string;
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reachMeters?: number;
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fiberType?: string;
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wavelength?: string;
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}
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function sleep(ms: number): Promise<void> {
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return new Promise((resolve) => setTimeout(resolve, ms));
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}
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function detectFormFactor(text: string): { formFactor: string; speed: string; speedGbps: number } {
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const lower = text.toLowerCase();
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if (lower.includes("400g") || lower.includes("qsfp-dd800") || lower.includes("800g")) return { formFactor: "QSFP-DD", speed: "400G", speedGbps: 400 };
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if (lower.includes("osfp") && !lower.includes("qsfp")) return { formFactor: "OSFP", speed: "400G", speedGbps: 400 };
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if (lower.includes("qsfp-dd") || lower.includes("qsfpdd")) return { formFactor: "QSFP-DD", speed: "400G", speedGbps: 400 };
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if (lower.includes("qsfp28") || lower.includes("100g")) return { formFactor: "QSFP28", speed: "100G", speedGbps: 100 };
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if (lower.includes("qsfp+") || lower.includes("40g")) return { formFactor: "QSFP+", speed: "40G", speedGbps: 40 };
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if (lower.includes("sfp56") || lower.includes("50g")) return { formFactor: "SFP56", speed: "50G", speedGbps: 50 };
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if (lower.includes("sfp28") || lower.includes("25g")) return { formFactor: "SFP28", speed: "25G", speedGbps: 25 };
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if (lower.includes("10g") || lower.includes("sfp+") || lower.includes("10gbase") || lower.includes("xfp")) return { formFactor: "SFP+", speed: "10G", speedGbps: 10 };
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if (lower.includes("1000base") || lower.includes("1g") || lower.includes(" sfp ") || lower.match(/\bsfp\b/)) return { formFactor: "SFP", speed: "1G", speedGbps: 1 };
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if (lower.includes("aoc") || lower.includes("dac")) return { formFactor: "SFP+", speed: "10G", speedGbps: 10 };
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return { formFactor: "SFP+", speed: "10G", speedGbps: 10 };
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}
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function detectReach(text: string): { label: string; meters: number } | undefined {
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const patterns: [RegExp, string, number][] = [
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[/\b80\s*km\b/i, "80km", 80000], [/\b40\s*km\b/i, "40km", 40000],
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[/\b20\s*km\b/i, "20km", 20000], [/\b15\s*km\b/i, "15km", 15000],
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[/\b10\s*km\b/i, "10km", 10000], [/\b2\s*km\b/i, "2km", 2000],
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[/\b550\s*m\b/i, "550m", 550], [/\b500\s*m\b/i, "500m", 500],
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[/\b300\s*m\b/i, "300m", 300], [/\b150\s*m\b/i, "150m", 150],
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[/\b100\s*m\b/i, "100m", 100], [/\b70\s*m\b/i, "70m", 70],
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[/\b30\s*m\b/i, "30m", 30],
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[/\bLR4\b/, "10km", 10000], [/\bLR\b/, "10km", 10000],
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[/\bER4?\b/, "40km", 40000], [/\bZR4?\b/, "80km", 80000],
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[/\bSR4?\b/, "300m", 300], [/\bDR4?\b/, "500m", 500], [/\bFR4?\b/, "2km", 2000],
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];
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for (const [regex, label, meters] of patterns) {
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if (regex.test(text)) return { label, meters };
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}
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return undefined;
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}
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function detectFiber(text: string): string {
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if (/single.?mode|smf|[^a-z]lx[^a-z]|[^a-z]lr[^a-z]|[^a-z]er[^a-z]|[^a-z]zr[^a-z]|bidi|cwdm|dwdm/i.test(text)) return "SMF";
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if (/multi.?mode|mmf|[^a-z]sx[^a-z]|[^a-z]sr[^a-z]/i.test(text)) return "MMF";
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if (/copper|dac|twinax|rj45|base-t/i.test(text)) return "Copper";
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if (/aoc|active.?optical/i.test(text)) return "MMF";
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return "SMF";
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}
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function detectWavelength(text: string): string {
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const match = text.match(/(\d{3,4})\s*nm/i);
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return match ? match[1] : "";
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}
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/** Fetch sitemap GZ → decompress → return XML string */
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async function fetchSitemap(): Promise<string> {
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const resp = await fetch(SITEMAP_URL, { headers: HEADERS, signal: AbortSignal.timeout(30000) });
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if (!resp.ok) throw new Error(`Sitemap fetch failed: HTTP ${resp.status}`);
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const buf = await resp.arrayBuffer();
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const decompressed = zlib.gunzipSync(Buffer.from(buf));
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return decompressed.toString("utf8");
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}
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/** Extract German product URLs from sitemap XML */
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function extractProductUrls(xml: string): string[] {
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const all = [...xml.matchAll(/<loc>(https?:\/\/shop\.fiber24\.net\/[^<]+)<\/loc>/g)]
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.map((m) => m[1]);
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// Keep only /de language URLs, filter transceiver/optics/aoc/dac categories
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return all.filter((url) => {
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if (!url.endsWith("/de")) return false;
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const slug = url.split("/").slice(-2, -1)[0].toLowerCase();
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return /sfp|qsfp|osfp|xfp|transceiver|optic|aoc|dac|cwdm|dwdm|bidi|wdm/i.test(slug);
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});
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}
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/** Parse product detail page — extracts microdata price, SKU, image */
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function parseProductPage(html: string, url: string): Product | null {
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const $ = cheerio.load(html);
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// SKU from URL slug (e.g. https://shop.fiber24.net/F24-CI-SFP-10G-AOC/de → F24-CI-SFP-10G-AOC)
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const slug = url.split("/").slice(-2, -1)[0];
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const partNumber = $("[itemprop='sku']").first().text().trim() || slug;
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if (!partNumber || partNumber.length < 3) return null;
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// Name
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const name = $("h1").first().text().trim()
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|| $("[itemprop='name']").first().text().trim()
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|| partNumber;
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if (!name || name.length < 5) return null;
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// Price — take the lowest itemprop price (minPrice if available, else first price)
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const priceEls = $("[itemprop='price']").map((_i, el) => {
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const val = $(el).attr("content") || $(el).text();
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return parseFloat(val.replace(",", "."));
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}).get().filter((p: number) => !isNaN(p) && p > 0 && p < 50000);
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const minPriceEl = $("[itemprop='minPrice']").attr("content");
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const price = minPriceEl ? parseFloat(minPriceEl) : (priceEls.length > 0 ? Math.min(...priceEls) : undefined);
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// Currency
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const currency = $("[itemprop='priceCurrency']").first().attr("content") || "EUR";
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// Image — prefer large image
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const imageUrl = $("[itemprop='image']").filter((_i, el) => {
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const src = $(el).attr("src") || $(el).attr("content") || "";
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return src.includes("/lg/") || src.includes("large");
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}).first().attr("src")
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|| $("[itemprop='image']").first().attr("src")
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|| $("[itemprop='image']").first().attr("content")
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|| undefined;
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const fullText = `${name} ${partNumber}`;
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const ff = detectFormFactor(fullText);
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const reach = detectReach(fullText);
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return {
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partNumber,
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name,
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url,
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price: price && price > 0 ? price : undefined,
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currency,
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imageUrl: imageUrl && !imageUrl.includes("keinBild") ? imageUrl : undefined,
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...ff,
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reachLabel: reach?.label,
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reachMeters: reach?.meters,
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fiberType: detectFiber(fullText),
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wavelength: detectWavelength(fullText),
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};
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}
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async function fetchPage(url: string): Promise<string> {
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const resp = await fetch(url, { headers: HEADERS, signal: AbortSignal.timeout(30000) });
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if (!resp.ok) throw new Error(`HTTP ${resp.status} for ${url}`);
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return resp.text();
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}
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export async function scrapeFiber24(): Promise<void> {
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console.log("=== ShopFiber24 Scraper Starting (sitemap-based) ===\n");
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const vendorId = await ensureVendor(
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"ShopFiber24",
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"compatible",
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"https://shop.fiber24.net",
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"https://shop.fiber24.net/FO-TRANSCEIVER/de",
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);
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// Step 1: Fetch sitemap and extract product URLs
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console.log(" Fetching sitemap...");
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let productUrls: string[] = [];
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try {
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const xml = await fetchSitemap();
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productUrls = extractProductUrls(xml);
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console.log(` Found ${productUrls.length} transceiver product URLs in sitemap`);
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} catch (err) {
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console.error(` Sitemap failed: ${(err as Error).message}`);
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return;
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}
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if (productUrls.length === 0) {
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console.log(" No product URLs found — aborting");
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return;
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}
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// Step 2: Scrape each product page
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let totalProducts = 0;
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let priceUpdates = 0;
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let imageUpdates = 0;
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for (let i = 0; i < productUrls.length; i++) {
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const url = productUrls[i];
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try {
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const html = await fetchPage(url);
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const product = parseProductPage(html, url);
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if (!product) {
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console.log(` [${i + 1}/${productUrls.length}] Skip (no data): ${url}`);
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continue;
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}
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const txId = await findOrCreateScrapedTransceiver({
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partNumber: product.partNumber,
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vendorId,
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formFactor: product.formFactor,
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speedGbps: product.speedGbps,
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speed: product.speed,
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reachMeters: product.reachMeters,
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reachLabel: product.reachLabel,
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fiberType: product.fiberType,
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wavelengths: product.wavelength,
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category: "Compatible",
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});
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if (product.price && product.price > 0) {
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const hash = contentHash(JSON.stringify({ price: product.price, part: product.partNumber }));
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const updated = await upsertPriceObservation({
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transceiverId: txId,
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sourceVendorId: vendorId,
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price: product.price,
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currency: product.currency,
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stockLevel: "on_request",
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url: product.url,
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contentHash: hash,
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});
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if (updated) priceUpdates++;
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}
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// Save image URL to transceivers table if present
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if (product.imageUrl) {
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await pool.query(
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`UPDATE transceivers SET image_url = $1, image_scraped_at = NOW(), has_image = true
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WHERE id = $2 AND (image_url IS NULL OR image_url = '')`,
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[product.imageUrl, txId],
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);
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imageUpdates++;
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}
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totalProducts++;
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if ((i + 1) % 10 === 0) {
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console.log(` Progress: ${i + 1}/${productUrls.length} — ${priceUpdates} prices, ${imageUpdates} images`);
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}
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} catch (err) {
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console.warn(` [${i + 1}] Error ${url}: ${(err as Error).message.slice(0, 80)}`);
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}
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if (i < productUrls.length - 1) await sleep(1500);
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}
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console.log(`\n=== ShopFiber24 Complete: ${totalProducts} products, ${priceUpdates} prices, ${imageUpdates} images ===`);
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}
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if (require.main === module) {
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scrapeFiber24()
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.then(() => pool.end())
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.catch((err) => { console.error("Fatal:", err); pool.end(); process.exit(1); });
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}
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