import { useMemo } from 'react';
import { useClientConfig } from './useClientConfig';
import { isTauri } from './useTauri';
import { getOriginBaseUrl } from '../pages/pathUtils';
import { resolveWebAppUrl } from '../utils/callInBrowser';

/**
 * [Gitea #248] Base URL for Lotus links meant for other people.
 *
 * On the web that's this page's origin. In the desktop app the page is served
 * from a local address (and hash-routed), which nobody else can open, so use
 * the public web app from config `webAppUrl` (web path routing) instead.
 * Without a valid `webAppUrl` it falls back to the origin, as before.
 */
export const lotusShareBase = (originBase: string, desktop: boolean, webAppUrl: unknown): string =>
  (desktop && resolveWebAppUrl(webAppUrl)) || originBase;

/**
 * Every base a Lotus link to this deployment may start with: the origin, plus
 * the public web app in the desktop app, so a shared https link opens in-app.
 */
export const lotusLinkBases = (
  originBase: string,
  desktop: boolean,
  webAppUrl: unknown,
): string[] => {
  const shared = lotusShareBase(originBase, desktop, webAppUrl);
  return shared === originBase ? [originBase] : [originBase, shared];
};

export const useLotusShareBase = (): string => {
  const { hashRouter, webAppUrl } = useClientConfig();
  return useMemo(
    () => lotusShareBase(getOriginBaseUrl(hashRouter), isTauri(), webAppUrl),
    [hashRouter, webAppUrl],
  );
};