import { EnumOptionsType, RJSFSchema, StrictRJSFSchema } from './types';
import enumOptionsValueForIndex from './enumOptionsValueForIndex';
import isNil from 'lodash/isNil';

/** Add the enum option value at the `valueIndex` to the list of `selected` values in the proper order as defined by
 * `allEnumOptions`
 *
 * @param valueIndex - The index of the value that should be selected
 * @param selected - The current list of selected values
 * @param [allEnumOptions=[]] - The list of all the known enumOptions
 * @returns - The updated list of selected enum values with enum value at the `valueIndex` added to it
 */
export default function enumOptionsSelectValue<S extends StrictRJSFSchema = RJSFSchema>(
  valueIndex: string | number,
  selected: EnumOptionsType<S>['value'][],
  allEnumOptions: EnumOptionsType<S>[] = []
) {
  const value = enumOptionsValueForIndex<S>(valueIndex, allEnumOptions);
  if (!isNil(value)) {
    const index = allEnumOptions.findIndex((opt) => value === opt.value);
    const all = allEnumOptions.map(({ value: val }) => val);
    const updated = selected.slice(0, index).concat(value, selected.slice(index));
    // As inserting values at predefined index positions doesn't work with empty
    // arrays, we need to reorder the updated selection to match the initial order
    return updated.sort((a, b) => Number(all.indexOf(a) > all.indexOf(b)));
  }
  return selected;
}