import { Model } from './types';

export const parseFilter = (filterStr: string) => {
  const colonIndex = (filterStr || '').indexOf(':');
  if (colonIndex === -1) return null;

  const path = filterStr.slice(0, colonIndex).trim().replace(/^\./, '');
  const value = filterStr
    .slice(colonIndex + 1)
    .trim()
    .replace(/^["']|["']$/g, '');

  return { path, value };
};

export const matchesFilter = <T>(
  obj: T,
  path: string,
  value: string,
): boolean => {
  const fieldValue = path
    .split('.')
    .reduce<unknown>(
      (o, key) => (o as Record<string, unknown>)?.[key],
      obj as Record<string, unknown>,
    );
  return Array.isArray(fieldValue)
    ? fieldValue.includes(value)
    : fieldValue === value;
};

export const applyFilter = (data: Model[], filterStr: string) => {
  const filter = parseFilter(filterStr);
  return filter
    ? data.filter((item) => matchesFilter(item, filter.path, filter.value))
    : data;
};