import type { Parser, ExtractedRecord, RawDocument } from "@dci/connectors";
import { countryFromText, cleanText, parseMoney, slugify } from "@dci/core";
import { loadHtml, txt, resolvePlace, type Place } from "./shared.js";
import { countryFromStateName, stateDisplayName } from "./city-coords.js";

/**
 * Meta data centers — https://datacenters.atmeta.com/all-locations/ (WordPress, server-rendered cards):
 *   <article class="card …"> eyebrow = state/country, title = town, excerpt = "$1 billion+ investment | 2010 break ground |
 *   1,000 skilled trade workers … | 350+ operational jobs …", CTA = info-sheet PDF.
 * The page states investment and the break-ground year but NOT the operating status. Status is therefore:
 *   break-ground year > current year → announced ; ≥ current year − 1 → under_construction ; older → unknown
 * (recorded in the description and left for reconciliation with other sources — never assumed operational).
 */
export const metaDatacentersParser: Parser = {
  name: "cloud_meta_datacenters_v1",
  version: "1.0.0",
  parse(doc: RawDocument, ctx): ExtractedRecord[] {
    const $ = loadHtml(doc);
    const out: ExtractedRecord[] = [];
    const year = new Date().getUTCFullYear();
    const seen = new Set<string>();
    $("article.card").each((_, card) => {
      const title = txt($(card).find(".card__title").first());
      const eyebrow = txt($(card).find(".card__eyebrow-text").first());
      if (!title) return;
      const excerptHtml = $(card).find(".card__excerpt").first().html() ?? "";
      const excerpt = cleanText(excerptHtml.replace(/<br\s*\/?>/gi, " | ").replace(/<[^>]+>/g, "")) ?? "";
      const key = `meta:dc:${slugify(`${title}-${eyebrow}`)}`;
      if (seen.has(key)) return;
      seen.add(key);
      const regionIso = countryFromStateName(eyebrow);
      const iso = regionIso ?? countryFromText(eyebrow) ?? null;
      let place: Place = resolvePlace(title, iso, regionIso ? eyebrow : null);
      if (!place.city) place.city = title;
      if (!place.countryIso2) place.countryIso2 = iso;
      if (regionIso && !place.regionName) place.regionName = stateDisplayName(eyebrow);
      const breakGround = excerpt.match(/(\d{4})\s*break ground/i)?.[1] ?? null;
      const bgYear = breakGround ? Number(breakGround) : null;
      const status = bgYear == null ? "unknown" : bgYear > year ? "announced" : bgYear >= year - 1 ? "under_construction" : "unknown";
      const investText = excerpt.split("|")[0]?.trim() ?? null;
      const money = parseMoney(investText ?? "");
      const sheet = $(card).find("a[href*='info-sheet']").first().attr("href")?.trim() ?? null;
      const fb = $(card).find(".card__follow-us-cta").first().attr("href")?.trim() ?? null;
      const externalIds: Record<string, string | number> = { meta_location: `${title}, ${eyebrow}` };
      if (sheet) externalIds.meta_info_sheet = sheet;
      if (fb) externalIds.facebook_page = fb;
      if (investText) externalIds.published_investment = investText;
      if (money) { externalIds.investment_amount = money.amount; externalIds.investment_currency = money.currency; }
      out.push({
        kind: "facility",
        key,
        url: doc.finalUrl,
        pageType: "facility_index",
        certainty: 0.9,
        methods: { name: "html:.card__title", regionName: "html:.card__eyebrow-text", constructionStartedOn: "regex:break ground", status: "heuristic:break-ground-year", lat: "curated-city-table" },
        data: {
          name: `Meta ${title} Data Center`,
          operatorName: "Meta",
          city: place.city,
          regionName: place.regionName,
          countryIso2: place.countryIso2,
          lat: place.lat,
          lng: place.lng,
          geoPrecision: place.geoPrecision ?? "city",
          status,
          facilityType: "hyperscale",
          isHyperscale: true,
          constructionStartedOn: breakGround,
          website: sheet ?? doc.finalUrl,
          description: `Meta data center site (${eyebrow}). Published: ${excerpt}${status === "unknown" ? " Operating status not stated on the page." : ""}`,
          externalIds,
        },
      });
    });
    ctx.log("info", `meta: ${out.length} data center sites`);
    return out;
  },
};