import { ManifestValidationError } from '../errors/ManifestValidationError';
import { SchemaVersions, JobManifestModel, JOB_SCHEMA_VERSIONS } from '../ManifestModel';
import { isValidManifestVersion } from './isValidManifestVersion';

export function getAndAssertJobManifestVersion(manifest: JobManifestModel, schemaRegexp?: RegExp): SchemaVersions {
  if (!manifest['$schema']) {
    throw new ManifestValidationError(
      'Could not determine manifest version. Your manifest must have a $schema property defined.',
    );
  }
  let match;
  if (schemaRegexp) {
    match = schemaRegexp.exec(manifest['$schema']);
  }
  const version = match?.groups?.schema;

  if (version === undefined) {
    throw new ManifestValidationError('Could not determine manifest version from $schema value.');
  }

  if (isValidManifestVersion(version)) {
    return version as SchemaVersions;
  }
  throw new ManifestValidationError(
    `manifest version "${version}" isn't a valid version. Valid versions are "${JOB_SCHEMA_VERSIONS.toString()}"`,
  );
}