export function getItemByIdInCascader(arr, vals, idName, childName) {
  let item = arr.find((v) => v[idName] == vals[0]);
  if (vals.length > 1) {
    return [
      item,
      ...getItemByIdInCascader(
        item[childName],
        vals.slice(1),
        idName,
        childName
      ),
    ];
  } else {
    return [item];
  }
}

export function collapse(arr, childName) {
  if (arr.length > 0) {
    let ret = [...arr];
    arr.forEach((element) => {
      let childs = element[childName];
      if (childs && Array.isArray(childs)) {
        ret.push(...collapse(childs, childName));
      }
    });
    return ret;
  } else {
    return [];
  }
}

export default {
  getItemByIdInCascader,
  collapse,
};