import { EventStatus, MatrixEvent } from 'matrix-js-sdk';

export const CONSENT_ERRCODE = 'M_CONSENT_NOT_GIVEN';

/**
 * The consent page comes from whichever homeserver the user is on (this client
 * works with any of them), so only ever open a plain web link.
 */
export const safeConsentUri = (uri: unknown): string | undefined => {
  if (typeof uri !== 'string') return undefined;
  try {
    const url = new URL(uri);
    return url.protocol === 'https:' || url.protocol === 'http:' ? url.href : undefined;
  } catch {
    return undefined;
  }
};

/** True when a local echo failed because the server wants the ToS accepted. */
export const failedForConsent = (event: MatrixEvent): boolean =>
  event.status === EventStatus.NOT_SENT && event.error?.errcode === CONSENT_ERRCODE;