graplix/src/language/parse/getDirectlyRelatedUserTypes.ts

Authorization framework for implementing Relation-based Access Control (ReBAC) with the Resolver (Inspired by [GraphQL](https://graphql.org))

import type { BaseEntityTypeMap } from "../../BaseEntityTypeMap";
import type { GraplixDirectlyRelatedUserTypes } from "../../GraplixSchema";
import type { ValidatedRelationMetadata } from "../ValidatedModel";

export function getDirectlyRelatedUserTypes<T extends BaseEntityTypeMap>(
  relation: ValidatedRelationMetadata,
): GraplixDirectlyRelatedUserTypes<T> | undefined {
  const relationDef = relation.directly_related_user_types?.[0];
  if (!relationDef) return undefined;

  return {
    type: relationDef.type as Extract<keyof T, string>,
  };
}