import { execFile } from "node:child_process";
import { loadEnvFile } from "node:process";
import { promisify } from "node:util";

try {
  loadEnvFile();
} catch (error) {
  if (error.code !== "ENOENT") {
    throw error;
  }
}

const execFileAsync = promisify(execFile);

const PYTHON = new URL("../../.venv/bin/python", import.meta.url).pathname;
const BRIDGE = new URL("../../scripts/deco_bridge.py", import.meta.url).pathname;

export async function getDecoStats(action) {
  try {
    const { stdout } = await execFileAsync(PYTHON, [BRIDGE, action], {
      timeout: 45_000,
      maxBuffer: 4 * 1024 * 1024,
      env: process.env,
    });
    return JSON.parse(stdout);
  } catch (error) {
    const detail = error.stderr?.trim() || error.message;
    throw new Error(`Deco stats request failed. ${detail}`);
  }
}