import type { ConnectorMeta, CrawlContext } from '@rareindex/connectors';
import type { ExtractionResult } from '@rareindex/shared';
import { goauctionPageUrl, parseGoauctionCalendar, parseGoauctionLots, type GoauctionHouse } from '../_g8-auctions-eu-apac-lib/goauction-platform.js';
import { SaleResultsConnector, type HouseConfig, type ParsedSalePage, type SaleRef } from '../_g8-auctions-eu-apac-lib/sale-results.js';

/**
 * Sworders Fine Art Auctioneers (Stansted Mountfitchet, Essex) — goauction platform. Results calendar /results/
 * (title, date, sale number, au id) → lot grid /auction/details/<slug>/?au=<id>&pn=N&g=1 (96 lots per page,
 * "Sold for £1,800", <link rel="next">). Sworders publishes hammer prices on its results pages (its terms describe
 * the buyer's premium as added to the hammer price); the grid itself does not label the basis → left null.
 */
const HOUSE: GoauctionHouse = { base: 'https://www.sworder.co.uk', currency: 'GBP', listStyle: 'details' };

export class SwordersConnector extends SaleResultsConnector {
  readonly version = '1.0.0';
  readonly house: HouseConfig = { houseName: 'Sworders', defaultCurrency: 'GBP', location: 'Stansted Mountfitchet, United Kingdom', idKey: 'sworders_lot', premiumIncluded: null, fallbackSlug: 'antiques', minIntervalMs: 2500, maxPagesPerSale: 20 };
  protected override minIntervalMs = 2500;

  async listSales(ctx: CrawlContext): Promise<SaleRef[]> {
    const url = String(this.meta.config.resultsUrl ?? `${HOUSE.base}/results/`);
    await this.throttle(url);
    const res = await ctx.fetch(url, { engines: ['api'], responseType: 'text', minQuality: 0, timeoutMs: 60_000 });
    if (!res.success || !res.html) {
      ctx.anomaly('past_list_failed', `${url}: ${res.error ?? res.httpStatus}`);
      return [];
    }
    return parseGoauctionCalendar(res.html, HOUSE);
  }

  salePageUrl(sale: SaleRef, page: number): string {
    return goauctionPageUrl(sale, page, HOUSE);
  }

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

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