import { hasKey } from '../../util/object';
import { PreCommitConfig, PreCommitDependency } from './types';

/**
 * Type guard to determine whether the file matches pre-commit configuration format
 * Example original yaml:
 *
 *   repos
 *   - repo: https://github.com/user/repo
 *     rev: v1.0.0
 */
export function matchesPrecommitConfigHeuristic(
  data: unknown
): data is PreCommitConfig {
  return data && typeof data === 'object' && hasKey('repos', data);
}

/**
 * Type guard to determine whether a given repo definition defines a pre-commit Git hook dependency.
 * Example original yaml portion
 *
 *   - repo: https://github.com/user/repo
 *     rev: v1.0.0
 */
export function matchesPrecommitDependencyHeuristic(
  data: unknown
): data is PreCommitDependency {
  return (
    data &&
    typeof data === 'object' &&
    hasKey('repo', data) &&
    hasKey('rev', data)
  );
}