Function buildPullUrl

packages/sync/src/pull-engine.ts:30–37

(baseUrl: string, remoteSessionId: string, params: FetchParams)

// ==================== Helpers ====================

export function buildPullUrl(baseUrl: string, remoteSessionId: string, params: FetchParams): string {
  const base = `${baseUrl}/sessions/${remoteSessionId}/messages`
  const qs: string[] = ['format=chatlab']
  if (params.since !== undefined && params.since > 0) qs.push(`since=${params.since}`)
  if (params.offset !== undefined && params.offset > 0) qs.push(`offset=${params.offset}`)
  if (params.limit !== undefined && params.limit > 0) qs.push(`limit=${params.limit}`)
  return base + '?' + qs.join('&')
}

export function deriveLocalSessionId(baseUrl: string, remoteSessionId: string): string {
  const hash = crypto.createHash('sha256').update(`${baseUrl}\0${remoteSessionId}`).digest('hex').slice(0, 12)