/** Client-side parsing for brainstorm host-pays quota responses (Story 3.4). */

export type BrainstormQuotaPayload = {
  error: string
  feature?: string
  upgradeTier?: string
  byokConfigured?: boolean
  billingOwnerId?: string
  triggeredByUserId?: string
  isGuestActor?: boolean
}

export class BrainstormQuotaError extends Error {
  readonly code = 'QUOTA_EXCEEDED'
  readonly isGuestActor: boolean
  readonly payload: BrainstormQuotaPayload

  constructor(payload: BrainstormQuotaPayload, message: string) {
    super(message)
    this.name = 'BrainstormQuotaError'
    this.isGuestActor = Boolean(payload.isGuestActor)
    this.payload = payload
  }
}

export function throwIfBrainstormQuota(
  res: Response,
  data: BrainstormQuotaPayload & { success?: boolean; error?: string },
  guestMessage: string,
  hostMessage: string,
): void {
  if (res.status !== 402 || data?.error !== 'QUOTA_EXCEEDED') return
  const message = data.isGuestActor ? guestMessage : hostMessage
  throw new BrainstormQuotaError(data, message)
}