// @pdsjs/spaces/space-row - the one place a SpaceRow is constructed.

import { MEMBERSPACE, normalizePolicy } from './policy.js';
import { parseSpaceUri } from './uri.js';

/**
 * Build a SpaceRow from a space URI.
 *
 * `SpaceRow` carries `spaceDid` and `spaceType` alongside `uri` so the storage
 * adapters can filter on indexed columns without parsing AT-URIs themselves
 * (parsing is domain logic and lives here). Those fields are therefore
 * redundant with `uri`, and nothing downstream re-checks that they agree — so
 * every construction site goes through this function rather than assembling the
 * object by hand.
 *
 * @param {string} uri - space AT-URI
 * @param {Partial<Omit<import('@pdsjs/core/ports').SpaceRow, 'uri'|'spaceDid'|'spaceType'>>} [fields]
 * @returns {import('@pdsjs/core/ports').SpaceRow}
 */
export function makeSpaceRow(uri, fields = {}) {
  const { spaceDid, spaceType } = parseSpaceUri(uri);
  return {
    uri,
    spaceDid,
    spaceType,
    isOwner: fields.isOwner ?? false,
    // The authority's own space has a policy, and a memberspace with its
    // defaults when none is named. A writer's repo in another authority's
    // space has none.
    policy:
      fields.policy ??
      (fields.isOwner ? normalizePolicy({ $type: MEMBERSPACE }) : null),
    createdAt: fields.createdAt ?? new Date().toISOString(),
    deletedAt: fields.deletedAt ?? null,
  };
}