import { toStateValue } from './utils'; // TODO: change to utils
import { StateValue } from './types';
import { STATE_DELIMITER } from './constants';

export function matchesState(
  parentStateId: StateValue,
  childStateId: StateValue,
  delimiter: string = STATE_DELIMITER
): boolean {
  const parentStateValue = toStateValue(parentStateId, delimiter);
  const childStateValue = toStateValue(childStateId, delimiter);

  if (typeof childStateValue === 'string') {
    if (typeof parentStateValue === 'string') {
      return childStateValue === parentStateValue;
    }

    // Parent more specific than child
    return false;
  }

  if (typeof parentStateValue === 'string') {
    return parentStateValue in childStateValue;
  }

  return Object.keys(parentStateValue).every(key => {
    if (!(key in childStateValue)) {
      return false;
    }

    return matchesState(parentStateValue[key], childStateValue[key]);
  });
}