import type { OidcRegistrationClientMetadata } from 'matrix-js-sdk';
import LotusLogo from '../../../../../public/res/Lotus.png';
import { OIDC_CALLBACK_PATH } from '../../paths';
import { getOriginBaseUrl, withOriginBaseUrl } from '../../pathUtils';

/**
 * Absolute URL the OIDC provider redirects back to after authorization.
 *
 * It MUST be a real (non-hash) path on our origin: OAuth redirect_uris cannot
 * contain a fragment, and with hashRouter the app's routes live after `#`. We
 * therefore always build it against the plain origin base — `getOriginBaseUrl()`
 * with NO hashRouter arg returns `${origin}${BASE_URL}` (no `#`) — and App.tsx
 * short-circuits this path before the router mounts.
 */
export const getOidcCallbackUrl = (): string =>
  withOriginBaseUrl(getOriginBaseUrl(), OIDC_CALLBACK_PATH);

/**
 * Client metadata sent during MSC2966 dynamic client registration.
 *
 * `registerOidcClient` drops any URI that doesn't share `clientUri` as a common
 * base, so every URI here lives under our origin base.
 */
export const getOidcClientMetadata = (): OidcRegistrationClientMetadata => {
  // `${origin}${BASE_URL}` (with trailing slash) — the common base for all URIs.
  const clientUri = getOriginBaseUrl();
  return {
    clientName: 'Lotus Chat',
    clientUri,
    logoUri: new URL(LotusLogo, window.location.origin).href,
    applicationType: 'web',
    contacts: ['support@lotusguild.org'],
    tosUri: clientUri,
    policyUri: clientUri,
    redirectUris: [getOidcCallbackUrl()],
  };
};