import type { ProvisionableUser } from 'officerdb';

// The account list the platform pushes, held for as long as this process lives.
//
// Pushed rather than fetched — see src/servers/plugins/user-provisioning.ts. It arrives once when this
// sidecar registers, and again whenever an Officer account is created or removed, so it is the current
// truth rather than a cache with an expiry: each message REPLACES what was held, never merges.
//
// In memory on purpose. Persisting it would create a second copy of the platform's own users that could
// disagree with it, and the recovery from disagreement would be re-reading the platform anyway. A restart
// re-registers, which re-sends.

let users: ProvisionableUser[] = [];
let receivedAt: Date | null = null;

export function setProvisionableUsers(next: ProvisionableUser[]): void {
  users = next;
  receivedAt = new Date();
  console.log(`[photos] user list: ${next.length} account(s) the platform can provision`);
}

export const getProvisionableUsers = (): ProvisionableUser[] => users;

/**
 * Whether the platform has told us anything yet.
 *
 * The distinction matters: an EMPTY list means "this server has only an owner", while never having been
 * told means the plugin is not entitled or the push has not arrived. Provisioning nothing is right in the
 * first case and wrong in the second, so the caller has to be able to tell them apart.
 */
export const hasProvisionableUsers = (): boolean => receivedAt !== null;