/**
 * MultiMode Inc Scraper — multimode-inc.com
 *
 * Specialist for high-speed coherent transceivers:
 * CFP, CFP2, CFP2-DCO, CFP4, QSFP112, OSFP112, OSFP224
 * Plus broad 400G/800G coverage.
 *
 * Schedule: every 8h
 */
import * as cheerio from "cheerio";
import { ensureVendor, upsertPriceObservation, findOrCreateScrapedTransceiver } from "../utils/db";
import { contentHash, parsePrice, parseStockLevel } from "../utils/hash";
import { logger } from "../utils/logger";

const BASE = "https://www.multimode.com";

const CATEGORIES: Array<{ path: string; form_factor: string }> = [
  { path: "/cfp-transceivers/",      form_factor: "CFP" },
  { path: "/cfp2-transceivers/",     form_factor: "CFP2" },
  { path: "/cfp2-dco/",              form_factor: "CFP2-DCO" },
  { path: "/cfp4-transceivers/",     form_factor: "CFP4" },
  { path: "/osfp-transceivers/",     form_factor: "OSFP" },
  { path: "/osfp112/",               form_factor: "OSFP112" },
  { path: "/osfp224/",               form_factor: "OSFP224" },
  { path: "/qsfp112/",               form_factor: "QSFP112" },
  { path: "/qsfp-dd-800/",           form_factor: "QSFP-DD800" },
  { path: "/qsfp-dd/",               form_factor: "QSFP-DD" },
  { path: "/sfp-dd/",                form_factor: "SFP-DD" },
  { path: "/qsfp28-transceivers/",   form_factor: "QSFP28" },
];

export async function scrapeMultimodeInc(): Promise<void> {
  logger.info("Multimode Inc scraper starting");
  const vendorId = await ensureVendor("Multimode Inc", BASE);
  let total = 0;
  let newItems = 0;

  for (const cat of CATEGORIES) {
    try {
      const resp = await fetch(`${BASE}${cat.path}`, {
        headers: { "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" },
        signal: AbortSignal.timeout(25_000),
      });
      if (!resp.ok) continue;
      const $ = cheerio.load(await resp.text());

      const rows = $(".product, .woocommerce-loop-product__link, article.product");
      for (let i = 0; i < rows.length; i++) {
        const $el = $(rows[i]);
        const name = $el.find(".woocommerce-loop-product__title, h2, h3").first().text().trim();
        const priceText = $el.find(".price, .woocommerce-Price-amount").first().text().trim();
        const href = $el.find("a").first().attr("href") || $el.closest("a").attr("href") || "";
        if (!name) continue;

        const partMatch = name.match(/([A-Z0-9]{2,8}-[A-Z0-9][A-Z0-9\-\/\.]{3,30})/);
        const partNumber = partMatch ? partMatch[1].toUpperCase() : name.substring(0, 50);
        const { price, currency } = parsePrice(priceText);
        if (price <= 0) continue;

        try {
          const transceiverId = await findOrCreateScrapedTransceiver({
            partNumber, vendorId, formFactor: cat.form_factor,
          });
          const isNew = await upsertPriceObservation({
            transceiverId, sourceVendorId: vendorId,
            price, currency: currency || "USD",
            stockLevel: "unknown",
            url: href.startsWith("http") ? href : `${BASE}${href}`,
            contentHash: contentHash(`${partNumber}:${price}:${currency}`),
          });
          if (isNew) newItems++;
          total++;
        } catch { /* skip */ }
      }
      if (rows.length > 0) logger.info(`Multimode Inc ${cat.form_factor}: ${rows.length} products`);
    } catch (e) {
      logger.warn(`Multimode Inc ${cat.form_factor} failed`, { err: e });
    }
  }
  logger.info(`Multimode Inc done — ${total} total, ${newItems} new`);
}