import { NewValueConfig, VersioningApi } from '../common';
import { api as npm } from '../npm';

export const id = 'hashicorp';
export const displayName = 'Hashicorp';
export const urls = [
  'https://www.terraform.io/docs/configuration/terraform.html#specifying-a-required-terraform-version',
];
export const supportsRanges = true;
export const supportedRangeStrategies = ['bump', 'extend', 'pin', 'replace'];

function hashicorp2npm(input: string): string {
  // The only case incompatible with semver is a "short" ~>, e.g. ~> 1.2
  return input.replace(/~>(\s*\d+\.\d+$)/, '^$1').replace(',', '');
}

const isLessThanRange = (version: string, range: string): boolean =>
  npm.isLessThanRange(hashicorp2npm(version), hashicorp2npm(range));

export const isValid = (input: string): string | boolean =>
  input && npm.isValid(hashicorp2npm(input));

const matches = (version: string, range: string): boolean =>
  npm.matches(hashicorp2npm(version), hashicorp2npm(range));

const getSatisfyingVersion = (versions: string[], range: string): string =>
  npm.getSatisfyingVersion(versions.map(hashicorp2npm), hashicorp2npm(range));

const minSatisfyingVersion = (versions: string[], range: string): string =>
  npm.minSatisfyingVersion(versions.map(hashicorp2npm), hashicorp2npm(range));

function getNewValue({
  currentValue,
  rangeStrategy,
  currentVersion,
  toVersion,
}: NewValueConfig): string {
  // handle specia. ~> 1.2 case
  if (/(~>\s*)\d+\.\d+$/.test(currentValue)) {
    return currentValue.replace(
      /(~>\s*)\d+\.\d+$/,
      `$1${npm.getMajor(toVersion)}.0`
    );
  }
  return npm.getNewValue({
    currentValue,
    rangeStrategy,
    currentVersion,
    toVersion,
  });
}

export const api: VersioningApi = {
  ...npm,
  isLessThanRange,
  isValid,
  matches,
  getSatisfyingVersion,
  minSatisfyingVersion,
  getNewValue,
};

// eslint-disable-next-line @typescript-eslint/unbound-method
export const { isVersion } = api;

export default api;