import { createCursorRole } from "@uncaged/nerve-workflow-utils";
import { readFileSync } from "node:fs";
import { join, dirname } from "node:path";
import { fileURLToPath } from "node:url";
import { resolveDashScopeProvider, buildSenseExamples, getNerveYaml, NERVE_ROOT } from "../shared.js";
import { plannerMetaSchema } from "../types.js";
import type { SenseMeta } from "../types.js";

const __dirname = dirname(fileURLToPath(import.meta.url));
const PROMPT = readFileSync(join(__dirname, "prompt.md"), "utf-8");
const senseExamples = buildSenseExamples();
const nerveYaml = getNerveYaml();

export async function buildPlannerRole() {
  const provider = await resolveDashScopeProvider();
  if (provider === null) {
    throw new Error("Cannot create planner: set DASHSCOPE_API_KEY and DASHSCOPE_BASE_URL");
  }
  return createCursorRole<SenseMeta["planner"]>({
    cwd: NERVE_ROOT,
    mode: "ask",
    prompt: async (threadId) =>
      PROMPT
        .replace("{{threadId}}", threadId)
        .replace("{{senseExamples}}", senseExamples)
        .replace("{{nerveYaml}}", nerveYaml),
    extract: { provider, schema: plannerMetaSchema },
  });
}