import {
  flattenOptions,
  InputOptions,
  NormalizedOption,
  NormalizedOptions,
  normalizeOptions,
} from '@variantjs/core';
import { computed, ComputedRef, Ref } from 'vue';

export default function useMultioptions(
  options: Ref<InputOptions | undefined>,
  textAttribute: Ref<string | undefined>,
  valueAttribute: Ref<string | undefined>,
  normalize: Ref<boolean>,
): {
    normalizedOptions: ComputedRef<NormalizedOptions>
    flattenedOptions: ComputedRef<NormalizedOption[]>
  } {
  const normalizedOptions = computed<NormalizedOptions>(() => {
    if (!normalize.value) {
      return options.value as NormalizedOptions;
    }

    return normalizeOptions(
      options.value,
      textAttribute.value,
      valueAttribute.value,
    );
  });

  // Flattened array with all posible options
  const flattenedOptions = computed((): NormalizedOption[] => flattenOptions(normalizedOptions.value));

  return {
    normalizedOptions,
    flattenedOptions,
  };
}