/**
 * utilities for working with JS booleans
 *
 * @module
 */

import * as Either from "effect/Either";
import { type Codec } from "./Codec.js";

/**
 * non-strict boolean codec, takes any truthy value as true.
 * Useful for DOM related operations
 */
export const contentAttribute__boolean: Codec<string | undefined, boolean> = {
  encode: (value: boolean | undefined) => Either.right(value ? "" : undefined),
  decode: (value: unknown) => Either.right(value === "" ? true : !!value),
};

/**
 * nearly the same as {@see contentAttribute__boolean} except
 * for that it transforms to "true" or "false" and only interprets
 * the string "true" as true.
 */
export const ariaAttribute__boolean: Codec<string, boolean> = {
  encode: (value: boolean) => Either.right(String(value)),
  decode: (value: unknown) =>
    Either.right(
      typeof value === "boolean" ? value : value === "true" ? true : false,
    ),
};