// A harness that answers from a script instead of a model. For tests and for
// exercising a machine's plumbing without spending on inference.

import type { Harness, HarnessRequest } from "../harness.ts";
import type { HarnessResult } from "../types.ts";

export function scriptedHarness(reply: (request: HarnessRequest) => string | Promise<string>, name = "scripted"): Harness {
  return {
    name,
    async run(request): Promise<HarnessResult> {
      const output = await reply(request);
      return {
        trajectory: [
          { role: "user", content: request.input },
          { role: "assistant", content: output },
        ],
        output,
        model: request.model,
        stopReason: "stop",
      };
    },
  };
}