import { xorWith as xorWithToolkit } from '../../array/xorWith.ts';

/**
 * Creates a function that returns the symmetric difference using a custom equality function.
 *
 * The equality function decides whether two values represent the same item, matching the
 * main {@link xorWith} behavior.
 *
 * @template T - The type of elements in the arrays.
 * @param secondArray - Values to compare with the piped array.
 * @param areItemsEqual - Returns true when two values are equal.
 * @returns A function that maps a readonly array to its symmetric difference.
 *
 * @example
 * import { pipe, xorWith } from 'es-toolkit/fp';
 *
 * pipe([{ id: 1 }, { id: 2 }], xorWith([{ id: 2 }, { id: 3 }], (a, b) => a.id === b.id));
 * // => [{ id: 1 }, { id: 3 }]
 */
export function xorWith<T>(
  secondArray: readonly T[],
  areItemsEqual: (item: T, other: T) => boolean
): (array: readonly T[]) => T[] {
  return function (array: readonly T[]): T[] {
    return xorWithToolkit(array, secondArray, areItemsEqual);
  };
}
