import { IComboBoxGroup, IComboBoxItem } from './ComboBox.types';

export const handleFilter = (
  comboBoxGroup: IComboBoxGroup[],
  inputValue: string
): IComboBoxGroup[] => {
  const queryLowerCase = inputValue.toLowerCase().trim();
  const filterItem = Array.prototype.map
    .call(comboBoxGroup, (group: IComboBoxGroup) => {
      return {
        ...group,
        items: group.items.filter((item) => item.label?.toLowerCase()?.includes(queryLowerCase)),
      };
    })
    .filter((group: IComboBoxGroup) => group.items?.length > 0);

  return filterItem;
};

export const searchItem = (
  key: string,
  originComboBoxGroups: IComboBoxGroup[]
): IComboBoxItem | undefined => {
  let target: IComboBoxItem | undefined;
  key &&
    Array.prototype.some.call(originComboBoxGroups, (group: IComboBoxGroup) => {
      const foundItem = group.items.find((item: IComboBoxItem) => item.key === key);
      if (foundItem) {
        target = foundItem;
        return true;
      }
      return false;
    });
  return target ?? { key: undefined, label: undefined };
};

export const getSumScrollTop = (element: Element): number => {
  let sum = 0;
  while (element) {
    element = element.parentElement;
    if (element) {
      const scrollTop = Number.isNaN(element.scrollTop) ? 0 : element.scrollTop;
      sum += scrollTop;
    }
  }
  return sum;
};