import type { ConnectorMeta, CrawlContext } from '@rareindex/connectors';
import type { ExtractionResult } from '@rareindex/shared';
import { parseDrouotCatalogue, parseDrouotIndex } from '../_g8-auctions-eu-apac-lib/drouot-platform.js';
import { SaleResultsConnector, type HouseConfig, type ParsedSalePage, type SaleRef } from '../_g8-auctions-eu-apac-lib/sale-results.js';

/**
 * Ader (Paris, Hôtel Drouot) — Drouot "site générique" platform. Past sales per year at /ventes-passees?year=YYYY,
 * lots at /catalogue/<id>?offset=N&max=50 with "Résultat : 1 081 EUR" and the page note "Résultats avec frais"
 * (premium-inclusive) read per page.
 */
const BASE = 'https://www.ader-paris.fr';
const HOUSE = { base: BASE, currency: 'EUR' as const };
const PAGE = 50;

export class AderConnector extends SaleResultsConnector {
  readonly version = '1.0.0';
  readonly house: HouseConfig = { houseName: 'Ader', defaultCurrency: 'EUR', location: 'Paris, France', idKey: 'ader_lot', premiumIncluded: null, fallbackSlug: 'antiques', minIntervalMs: 2500, maxPagesPerSale: 30 };
  protected override minIntervalMs = 2500;

  async listSales(ctx: CrawlContext): Promise<SaleRef[]> {
    const years = (this.meta.config.years as number[] | undefined) ?? [new Date().getUTCFullYear()];
    const all: SaleRef[] = [];
    for (const y of ctx.options.mode === 'backfill' ? backfillYears(this.meta.config.backfillFromYear) : years) {
      const url = `${BASE}/ventes-passees?year=${y}`;
      await this.throttle(url);
      const res = await ctx.fetch(url, { engines: ['api'], responseType: 'text', minQuality: 0, timeoutMs: 60_000 });
      if (!res.success || !res.html) {
        ctx.anomaly('past_list_failed', `${url}: ${res.error ?? res.httpStatus}`);
        continue;
      }
      all.push(...parseDrouotIndex(res.html, HOUSE));
    }
    return all;
  }

  salePageUrl(sale: SaleRef, page: number): string {
    return page > 1 ? `${sale.url.replace(/\/catalogue\/(\d+)[^?]*/, '/catalogue/$1')}?lang=fr&search=&offset=${(page - 1) * PAGE}&max=${PAGE}` : sale.url;
  }

  parseSalePage(res: ExtractionResult, sale: SaleRef): ParsedSalePage | null {
    return res.html ? parseDrouotCatalogue(res.html, sale, HOUSE, PAGE) : null;
  }
}

export function backfillYears(from: unknown): number[] {
  const start = Number(from ?? 2004);
  const now = new Date().getUTCFullYear();
  const out: number[] = [];
  for (let y = start; y <= now; y++) out.push(y);
  return out;
}

export default function createConnector(meta: ConnectorMeta) {
  return new AderConnector(meta);
}