import { cursorAgent } from "@uncaged/nerve-adapter-cursor";
import type { AgentFn, WorkflowContext } from "@uncaged/nerve-core";

const DEFAULT_MS = 300_000;

function throwCursorError(error: {
  kind: string;
  exitCode?: number;
  stdout?: string;
  stderr?: string;
  message?: string;
}): never {
  if (error.kind === "non_zero_exit") {
    throw new Error(
      `cursor-agent: exitCode=${error.exitCode} stdout=${error.stdout} stderr=${error.stderr}`,
    );
  }
  if (error.kind === "timeout") {
    throw new Error("cursor-agent: timeout");
  }
  if (error.kind === "aborted") {
    throw new Error("cursor-agent: aborted");
  }
  throw new Error(`cursor-agent: ${error.message ?? error.kind}`);
}

/** Cursor CLI in `--mode=ask` (planner-style roles). */
export function createAskCursorAdapter(config: { model: string; timeout: number | null }): AgentFn {
  const timeoutMs = config.timeout ?? DEFAULT_MS;
  return async (prompt: string, context: WorkflowContext): Promise<string> => {
    const run = await cursorAgent({
      prompt,
      mode: "ask",
      model: config.model,
      cwd: context.workdir,
      env: null,
      timeoutMs,
      dryRun: context.start.meta.dryRun,
      abortSignal: context.signal,
    });
    if (!run.ok) {
      throwCursorError(run.error);
    }
    return run.value;
  };
}