import { z } from 'zod';
import { BaseConnector, type ConnectorMeta, type CrawlContext, type RawRecordInput, type RawRecordLike } from '@rareindex/connectors';
import { normalizeCondition } from '@rareindex/taxonomy';
import { AssetAttributesSchema, NormalizedListingSchema, type NormalizedRecord } from '@rareindex/shared';
import { ShopifyProductSchema, bagHardware, bagMaterial, bagModel, bagSize, caseSize, fetchShopifyPage, moneyNumber, trimShopifyProduct, watchCategory, watchMaterial, watchReferenceFromText, yearFrom } from '../_luxury-lib/index.js';

/**
 * FASHIONPHILE — one Shopify product = one authenticated pre-owned item. Listings (asking prices in
 * USD) plus sold state (`available:false` on a published product = the site shows "SOLD").
 */
const BASE = 'https://www.fashionphile.com';
const PARSER_VERSION = '1.0.0';

export const PagePayloadSchema = z.object({ kind: z.literal('shopify_page'), url: z.string(), seed: z.string(), page: z.number(), products: z.array(ShopifyProductSchema) });
export type PagePayload = z.infer<typeof PagePayloadSchema>;

export function categoryFor(productType: string | null | undefined, vendor: string | null | undefined, title: string): string {
  const t = (productType ?? '').toLowerCase();
  const l = title.toLowerCase();
  if (/watch/.test(t) || /\bwatch\b/.test(l)) return watchCategory(vendor);
  if (/jewel|ring|bracelet|necklace|earring|brooch|pendant/.test(t)) return 'jewelry';
  if (/bag|wallet|clutch|tote|backpack|pouch|luggage|small leather/.test(t)) return 'luxury_handbags';
  if (/shoe|sneaker|boot|sandal|heel|pump|loafer|apparel|clothing|scarf|belt|hat|sunglass|jacket|coat|dress/.test(t)) return 'fashion_streetwear';
  if (/\b(sandals?|pumps?|loafers?|sneakers?|boots?|heels?|mules?|flats?|espadrilles?|slides?)\b/.test(l) || /\b(muffler|scarf|shawl|stole|belt|sunglasses|hat|cap|jacket|coat|dress|sweater|cardigan|t-shirt|shirt)\b/.test(l)) return 'fashion_streetwear';
  return 'luxury_handbags';
}

export class FashionphileConnector extends BaseConnector {
  readonly version = '1.0.0';
  readonly parserVersion = PARSER_VERSION;
  protected override minIntervalMs = 1500;
  override readonly urlPatterns = [/^https?:\/\/(www\.)?fashionphile\.com\/products\/([a-z0-9-]+)/i];

  async *crawl(ctx: CrawlContext): AsyncIterable<RawRecordInput> {
    const seeds = (ctx.options.seeds?.length ? ctx.options.seeds : (this.meta.config.seeds as string[] | undefined)) ?? [];
    const pages = ctx.options.mode === 'backfill' ? 20 : Number(this.meta.config.pagesPerSeed ?? 2);
    let count = 0;
    for (const seed of seeds) {
      for (let page = 1; page <= pages; page++) {
        if (ctx.signal?.aborted || this.reached(ctx, count)) return;
        await this.throttle();
        const { products, res } = await fetchShopifyPage(ctx, BASE, `/collections/${seed}/products.json`, page);
        if (!res.success) {
          ctx.anomaly('page_fetch_failed', `${seed} p${page}: ${res.error ?? res.httpStatus}`);
          break;
        }
        if (products.length === 0) break;
        count++;
        const payload: PagePayload = { kind: 'shopify_page', url: `${BASE}/collections/${seed}/products.json?page=${page}`, seed, page, products: products.map(trimShopifyProduct) };
        yield { url: payload.url, externalId: `collection:${seed}:${page}`, kind: 'listing', engine: res.engine, httpStatus: res.httpStatus, payload, fetchedAt: res.fetchedAt };
        if (products.length < 250) break;
      }
    }
  }

  async lookup(url: string, ctx: CrawlContext): Promise<RawRecordInput[]> {
    const handle = url.match(this.urlPatterns[0]!)?.[2];
    if (!handle) return [];
    await this.throttle();
    const res = await ctx.fetch(`${BASE}/products/${handle}.json`, { engines: ['api'], responseType: 'json', minQuality: 0.2 });
    const parsed = z.object({ product: ShopifyProductSchema }).safeParse(res.json);
    if (!res.success || !parsed.success) return [];
    const payload: PagePayload = { kind: 'shopify_page', url: `${BASE}/products/${handle}`, seed: `product:${handle}`, page: 1, products: [trimShopifyProduct(parsed.data.product)] };
    return [{ url: payload.url, externalId: `product:${handle}`, kind: 'listing', engine: res.engine, httpStatus: res.httpStatus, payload, fetchedAt: res.fetchedAt }];
  }

  async normalize(raw: RawRecordLike): Promise<NormalizedRecord[]> {
    const p = PagePayloadSchema.parse(raw.payload);
    const out: NormalizedRecord[] = [];
    for (const pr of p.products) {
      const v = pr.variants[0];
      if (!v) continue;
      const price = moneyNumber(v.price);
      if (!price) continue;
      const brand = pr.vendor ?? null;
      const categorySlug = categoryFor(pr.product_type, brand, pr.title);
      const isWatch = categorySlug.endsWith('watches') || categorySlug === 'rolex' || categorySlug === 'patek_philippe' || categorySlug === 'audemars_piguet' || categorySlug === 'omega';
      const title = pr.title.replace(/\s+/g, ' ').trim();
      const ref = isWatch ? watchReferenceFromText(title) : null;
      const model = isWatch ? null : bagModel(title);
      const attributes = AssetAttributesSchema.parse({
        categorySlug,
        brand,
        name: brand ? `${brand} ${title}` : title,
        model,
        reference: ref,
        year: yearFrom(pr.body_html ?? '') ?? null,
        material: isWatch ? watchMaterial(title) : bagMaterial(title),
        size: isWatch ? caseSize(title) : bagSize(title),
        color: null,
        identifiers: { fashionphile_sku: v.sku ?? String(pr.id), ...(ref ? { reference: ref } : {}) },
        metadata: { product_type: pr.product_type, hardware: bagHardware(title), tags: pr.tags?.slice(0, 12) ?? [], compare_at_price: moneyNumber(v.compare_at_price) },
      });
      const sourceUrl = `${BASE}/products/${pr.handle}`;
      const availability = pr.published_at ? (v.available ? 'available' : 'sold') : 'removed';
      const listedAt = pr.published_at ? new Date(pr.published_at) : null;
      out.push(
        NormalizedListingSchema.parse({
          kind: 'listing',
          connectorId: this.meta.id,
          sourceId: this.meta.sourceId,
          sourceUrl,
          externalId: String(pr.id),
          rawTitle: title,
          description: pr.body_html ?? null,
          imageUrls: (pr.images ?? []).map((i) => i.src),
          attributes,
          condition: { condition: normalizeCondition(categorySlug, null), conditionRaw: null, completeness: null },
          observedAt: raw.fetchedAt,
          confidence: 0.85,
          parserVersion: PARSER_VERSION,
          listingType: 'fixed_price',
          price,
          currency: 'USD',
          seller: 'FASHIONPHILE',
          location: 'US',
          quantity: 1,
          listedAt: listedAt && !Number.isNaN(listedAt.getTime()) ? listedAt : null,
          availability,
        }),
      );
    }
    return out;
  }
}

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