트레이딩 시스템용 뉴스 API

import { FinlightApi } from 'finlight-client'

const api = new FinlightApi(
  { apiKey: process.env.FINLIGHT_API_KEY! },
  { takeover: true },
)

const seen = new Map<string, number>()

// Raw stream: instant delivery, react immediately
api.rawWebsocket.connect({ language: 'en' }, (raw) => {
  seen.set(raw.link, Date.now())
  if (/earnings|acquisition|merger|FDA|rate decision/i.test(raw.title)) {
    console.log(`[SIGNAL] ${raw.title} (${raw.source})`)
    // your reaction logic here
  }
})

// Enriched stream: sentiment, entities, tickers
api.websocket.connect({ language: 'en', includeEntities: true }, (article) => {
  const t = seen.get(article.link)
  const delta = t ? `${((Date.now() - t) / 1000).toFixed(1)}s after raw` : 'new'
  console.log(`[ENRICHED] ${article.title} (${delta})`)
  console.log(
    `  sentiment=${article.sentiment} confidence=${article.confidence}`,
  )
  console.log(`  tickers=${article.companies?.map((c) => c.ticker).join(',')}`)
  seen.delete(article.link)
})