import fs from 'node:fs';
import path from 'node:path';
import { execFileSync } from 'node:child_process';

export function inspectGooseBaseline(root, expectedVersion) {
  const manifest = fs.readFileSync(path.join(root, 'Cargo.toml'), 'utf8');
  const version = manifest.match(/^version\s*=\s*"([^"]+)"/m)?.[1];
  if (version !== expectedVersion) {
    throw new Error(`Baseline version mismatch: ${root} is ${version ?? 'unknown'}, expected ${expectedVersion}`);
  }
  const git = (...args) => execFileSync('git', ['-C', root, ...args], { encoding: 'utf8' }).trim();
  return { root, version, commit: git('rev-parse', 'HEAD'), dirty: Boolean(git('status', '--porcelain', '--untracked-files=no')) };
}