import type { BackendInfo, RunRequest, RunResult, Runner } from "./types";
import { executeBundle, numblVersion } from "./execute";

/**
 * Runs numbl in the current Node process. Used by tests and scripts; cannot
 * cancel.
 */
export class NodeRunner implements Runner {
  private readonly info: BackendInfo = {
    engine: "numbl",
    version: numblVersion(),
    optimization: "1",
    host: "node",
  };
  readonly backend = Promise.resolve(this.info);

  run(req: RunRequest, onOutput?: (text: string) => void): Promise<RunResult> {
    return Promise.resolve(executeBundle(req, this.info, onOutput));
  }
  cancel(): void {
    /* synchronous host: nothing in flight between awaits */
  }
  dispose(): void {
    /* nothing to release */
  }
}