/**
 * Where the repositories this run was pointed at are.
 *
 * **One place**, because two things need it and they must agree: the rebuild builds these, and the
 * receipt claims these. A receipt naming a repository the run did not build is exactly the
 * false coverage novox/hq 04-ISSUES/005 is about, and it would arrive by nobody's decision — just
 * two derivations drifting.
 *
 * Derived from the environment the suite is configured by, so a repository this run was not
 * pointed at is neither built nor claimed.
 */

import { dirname } from "node:path";

export interface Repositories {
  /** Absolute path to the repository root, by name. */
  [name: string]: string;
}

export function repositories(env: NodeJS.ProcessEnv = process.env): Repositories {
  const found: Repositories = {};
  found["mesh-lab"] = process.cwd();
  const host = env["MESH_LAB_HOST_BINARY"];
  if (host) found["mesh-host"] = dirname(host);
  const modules = env["MESH_LAB_MODULES"];
  if (modules) found["mesh-control"] = dirname(dirname(modules));
  return found;
}