import { file } from "bun";

import { z } from "zod";

import { toCamelCaseKeys } from "../../utils/zod.ts";
import { getLauncherInstalledPath } from "./path.ts";

/**
 * Zod schema for working with the Epic Games Launcher's
 * `LauncherInstalled.dat` file.
 */
export const launcherInstalledSchema = toCamelCaseKeys(
  z.looseObject({
    installationList: toCamelCaseKeys(
      z.looseObject({
        installLocation: z.string(),
        /** @type {string | undefined} */
        namespaceId: z.unknown().optional(),
        /** @type {string | undefined} */
        itemId: z.unknown().optional(),
        /** @type {string | undefined} */
        artifactId: z.unknown().optional(),
        /** @type {string | undefined} */
        appVersion: z.unknown().optional(),
        appName: z.string(),
      }),
    ).array(),
  }),
);

/**
 * Gets information about Epic Games Launcher apps installed on this
 * computer, parsed from its `LauncherInstalled.dat` file.
 */
export const getLauncherInstalled = async () =>
  launcherInstalledSchema.parse(await file(getLauncherInstalledPath()).json())
    .installationList;