import { isString } from 'typeable';

const V1_REGEX = /^[0-9a-f]{8}-[0-9a-f]{4}-[1][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
const V2_REGEX = /^[0-9a-f]{8}-[0-9a-f]{4}-[2][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
const V3_REGEX = /^[0-9a-f]{8}-[0-9a-f]{4}-[3][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
const V4_REGEX = /^[0-9a-f]{8}-[0-9a-f]{4}-[4][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
const V5_REGEX = /^[0-9a-f]{8}-[0-9a-f]{4}-[5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;

export interface StringUUIDOptions {
  version?: number;
}

export function stringUUID (value: any, recipe: StringUUIDOptions = {}): boolean {
  if (!isString(value)) return false;

  let { version } = recipe;
  switch (version) {
    case 1:
      return V1_REGEX.test(value);
    case 2:
      return V2_REGEX.test(value);
    case 3:
      return V3_REGEX.test(value);
    case 4:
      return V4_REGEX.test(value);
    case 5:
      return V5_REGEX.test(value);
  }

  return (
    V1_REGEX.test(value)
    || V2_REGEX.test(value)
    || V3_REGEX.test(value)
    || V4_REGEX.test(value)
    || V5_REGEX.test(value)
  );
};