import semver from 'semver';
/**
 * Whether the iOS APNs message was configured as a background update notification.
 */
export type CheckOptions = {
  /**
   * The semver of your current app version
   */
  curVersion?: string;

  /**
   * This will run right after the store version is fetched in case you want to change it before it's compared as a semver
   */
  toSemverConverter?: (
    version: SemverVersionCode | SemverVersion
  ) => SemverVersion;

  /**
   * By default this library uses semver behind the scenes to compare the store version with the curVersion value, but you can pass your own version comparator if you want to
   */
  customVersionComparator?: (
    v1: SemverVersion,
    v2: SemverVersion
  ) => -1 | 0 | 1;

  /**
   * ISO 3166-1 country code (iOS only)
   */
  country?: string;
};

export type SemverVersion = string;
export type SemverVersionCode = number;
export const compareVersions = (
  versionToCheck: SemverVersion,
  checkAgainst: SemverVersion
) => {
  if (versionToCheck && checkAgainst) {
    // The version consists of 3 parts.
    // 1 MAJOR, 2 MINOR, 3 LIVE_RELOAD_REV each of which contain 3 digits

    return semver.compare(
      // @ts-ignore
      semver.coerce(versionToCheck),
      semver.coerce(checkAgainst)
    );
  }
  if (versionToCheck && checkAgainst == null) {
    return 1;
  }
  if (checkAgainst && versionToCheck == null) {
    return -1;
  }
  return 0;
};