import type { Event } from 'nostr-tools'
import { SimplePool } from 'nostr-tools'
import type { Article } from '@/types/nostr'
import { parseArticleFromEvent } from './nostrEventParsing'

const RELAY_URL = process.env.NEXT_PUBLIC_NOSTR_RELAY_URL || 'wss://relay.damus.io'

/**
 * Subscribe to events with timeout
 */
export async function subscribeWithTimeout<T>(
  pool: SimplePool,
  filters: any[],
  parser: (event: Event) => T | null,
  timeout: number = 5000
): Promise<T | null> {
  return new Promise((resolve) => {
    const resolved = { value: false }
    const sub = pool.sub([RELAY_URL], filters)
    let timeoutId: NodeJS.Timeout | null = null

    const cleanup = () => {
      if (timeoutId) clearTimeout(timeoutId)
      sub.unsub()
    }

    sub.on('event', (event: Event) => {
      if (resolved.value) return

      resolved.value = true
      const result = parser(event)
      cleanup()
      resolve(result)
    })

    sub.on('eose', () => {
      if (resolved.value) return

      resolved.value = true
      cleanup()
      resolve(null)
    })

    timeoutId = setTimeout(() => {
      if (!resolved.value) {
        resolved.value = true
        cleanup()
        resolve(null)
      }
    }, timeout)
  })
}