import { api } from './api'
import type { StreamEvent } from './contracts'

/** Read the durable record in bounded pages; callers own cancellation and projection. */
export async function loadRunEvents(conversationId: string, runId: string, signal: AbortSignal): Promise<StreamEvent[]> {
  const events: StreamEvent[] = []
  let after = 0
  while (true) {
    const page = await api.runEventsPage(conversationId, runId, after, signal)
    const rows = page.events ?? []
    events.push(...rows)
    if (rows.length < 500) return events
    const next = rows[rows.length - 1].seq
    if (next <= after) throw new Error('process event cursor did not advance')
    after = next
  }
}