import { afterEach, describe, expect, it } from 'vitest';
import metaJson from './meta.json' with { type: 'json' };
import { loadFixture, runFixtureSuite } from '@rareindex/connectors/testing';
import { missingRequirements } from '@rareindex/connectors';
import { localMeta } from '../_lib/local-meta.js';
import { clearTokenCache } from '../_g10-lib/index.js';
import createConnector, { apiBase, getAppToken, parseSearchResponse, searchUrl } from './index.js';

const meta = localMeta(metaJson);
const connector = createConnector(meta);

describe('ebay-browse (gated)', () => {
  runFixtureSuite(connector, it, expect);
  afterEach(() => clearTokenCache());

  it('is reported as gated until EBAY_CLIENT_ID / EBAY_CLIENT_SECRET exist', () => {
    expect(meta.requires).toEqual(['EBAY_CLIENT_ID', 'EBAY_CLIENT_SECRET']);
    expect(missingRequirements(meta, {})).toEqual(['EBAY_CLIENT_ID', 'EBAY_CLIENT_SECRET']);
    expect(missingRequirements(meta, { EBAY_CLIENT_ID: 'a', EBAY_CLIENT_SECRET: 'b' })).toEqual([]);
    expect(apiBase(undefined).token).toBe('https://api.ebay.com/identity/v1/oauth2/token');
    expect(apiBase('sandbox').api).toBe('https://api.sandbox.ebay.com');
  });

  it('builds search URLs with marketplace-independent params and filters', () => {
    const url = searchUrl('https://api.ebay.com', { q: 'pokemon psa 10', categoryIds: ['183454'], categorySlug: 'pokemon', filter: 'price:[100..],priceCurrency:USD' }, { limit: 200, offset: 400, filter: 'buyingOptions:{FIXED_PRICE|AUCTION}', sort: 'newlyListed' });
    const u = new URL(url);
    expect(u.pathname).toBe('/buy/browse/v1/item_summary/search');
    expect(u.searchParams.get('q')).toBe('pokemon psa 10');
    expect(u.searchParams.get('category_ids')).toBe('183454');
    expect(u.searchParams.get('filter')).toBe('buyingOptions:{FIXED_PRICE|AUCTION},price:[100..],priceCurrency:USD');
    expect(u.searchParams.get('limit')).toBe('200');
    expect(u.searchParams.get('offset')).toBe('400');
  });

  it('requests and caches the client-credentials token (Basic auth, form body, api_scope)', async () => {
    let calls = 0;
    const fakeFetch = (async (url: string | URL | Request, init?: RequestInit) => {
      calls++;
      expect(String(url)).toBe('https://api.ebay.com/identity/v1/oauth2/token');
      expect((init?.headers as Record<string, string>).authorization).toBe(`Basic ${Buffer.from('id:secret').toString('base64')}`);
      expect((init?.headers as Record<string, string>)['content-type']).toBe('application/x-www-form-urlencoded');
      expect(String(init?.body)).toBe('grant_type=client_credentials&scope=https%3A%2F%2Fapi.ebay.com%2Foauth%2Fapi_scope');
      return new Response(JSON.stringify({ access_token: 'v^1.1#tok', expires_in: 7200, token_type: 'Application Access Token' }), { status: 200 });
    }) as typeof fetch;
    const t1 = await getAppToken('id', 'secret', 'https://api.ebay.com/identity/v1/oauth2/token', fakeFetch);
    const t2 = await getAppToken('id', 'secret', 'https://api.ebay.com/identity/v1/oauth2/token', fakeFetch);
    expect(t1).toBe('v^1.1#tok');
    expect(t2).toBe(t1);
    expect(calls).toBe(1);
  });

  it('parses the documented search response shape and normalises listings in native currency', async () => {
    const fx = loadFixture('ebay-browse', 'docs-search-ebay-us');
    const payload = fx.raw.payload as { items: unknown[] };
    const parsed = parseSearchResponse({ itemSummaries: payload.items, total: 12345, next: 'https://api.ebay.com/buy/browse/v1/item_summary/search?q=x&limit=2&offset=2' });
    expect(parsed?.items.length).toBe(payload.items.length);
    expect(parsed?.next).toContain('offset=2');
    expect(parseSearchResponse({ errors: [{ errorId: 12000 }] })).toBeNull();
    const out = await connector.normalize(fx.raw);
    expect(out.length).toBeGreaterThan(0);
    const first = out[0]!;
    if (first.kind !== 'listing') throw new Error('expected listing');
    expect(first.currency).toBe('USD');
    expect(first.attributes.identifiers.ebay_item_id).toMatch(/^v1\|\d+\|\d+$/);
    expect(first.attributes.identifiers.ebay_epid).toBeTruthy();
    expect(first.seller).toBeTruthy();
    expect(first.sellerReputation).toMatch(/%/);
    expect(first.shippingCost).not.toBeNull();
    expect(first.listingType).toBe('best_offer'); // FIXED_PRICE + BEST_OFFER → best_offer
    const auction = out.find((r) => r.kind === 'listing' && r.listingType === 'auction');
    expect(auction && auction.kind === 'listing' ? auction.bidCount : null).not.toBeNull();
    const gb = loadFixture('ebay-browse', 'docs-search-ebay-gb-converted');
    const gbOut = await connector.normalize(gb.raw);
    expect(gbOut.length).toBe(1);
    const g = gbOut[0]!;
    if (g.kind !== 'listing') throw new Error('expected listing');
    expect(g.currency).toBe('GBP');
    expect(g.attributes.metadata.price_converted_by_ebay).toBe(true);
    expect(g.grade.grader).toBe('psa');
    expect(g.grade.grade).toBe('10');
  });
});