import { createApplication } from "../application/create-application.js";

/**
 * This is the only module allowed to join concrete adapters to application
 * ports. Boot phases are explicit so failures can stop before product mount.
 *
 * @template Config
 * @template Release
 * @template {Parameters<typeof createApplication>[0]} OutputPorts
 * @template Infrastructure
 * @param {{
 *   loadConfig(): Promise<Config>,
 *   loadRelease(config: Config): Promise<Release>,
 *   createAdapters(context: {
 *     config: Config,
 *     release: Release
 *   }): Promise<{
 *     outputPorts: OutputPorts,
 *     infrastructure: Infrastructure
 *   }>
 * }} factories
 * @returns {Promise<Readonly<{
 *   config: Config,
 *   release: Release,
 *   infrastructure: Infrastructure,
 *   application: ReturnType<typeof createApplication>
 * }>>}
 */
export async function createCompositionRoot(factories) {
  const config = await factories.loadConfig();
  const release = await factories.loadRelease(config);
  const adapters = await factories.createAdapters({ config, release });
  const application = createApplication(adapters.outputPorts);

  return Object.freeze({
    config,
    release,
    infrastructure: adapters.infrastructure,
    application,
  });
}