Function parsePreviewPath

packages/server/src/utils/preview-path.ts:22–56

(url: string)

}

export function parsePreviewPath(url: string): ParsedPreviewPath | null {
  const parsed = new URL(url, 'http://agent-tower.local');
  const prefix = `${PREVIEW_PREFIX}/`;
  if (!parsed.pathname.startsWith(prefix)) return null;

  const rest = parsed.pathname.slice(prefix.length);
  const slashIndex = rest.indexOf('/');
  const encodedWorkspaceId = slashIndex === -1 ? rest : rest.slice(0, slashIndex);
  if (!encodedWorkspaceId) return null;

  const workspaceId = decodeURIComponent(encodedWorkspaceId);
  let suffix = slashIndex === -1 ? '/' : rest.slice(slashIndex) || '/';
  let previewToken: string | null = null;

  if (suffix !== '/') {
    const suffixRest = suffix.slice(1);
    const markerSlashIndex = suffixRest.indexOf('/');
    const encodedFirstSegment = markerSlashIndex === -1 ? suffixRest : suffixRest.slice(0, markerSlashIndex);
    const firstSegment = decodeURIComponent(encodedFirstSegment);

    if (firstSegment === PREVIEW_ACCESS_TOKEN_MARKER && markerSlashIndex !== -1) {
      const afterMarker = suffixRest.slice(markerSlashIndex + 1);
      const tokenSlashIndex = afterMarker.indexOf('/');
      const encodedToken = tokenSlashIndex === -1 ? afterMarker : afterMarker.slice(0, tokenSlashIndex);
      const token = decodeURIComponent(encodedToken);
      if (isPreviewAccessTokenSegment(token)) {
        previewToken = token;
        suffix = tokenSlashIndex === -1 ? '/' : `/${afterMarker.slice(tokenSlashIndex + 1)}`;
        if (!suffix) suffix = '/';
      }
    }
  }

  return { workspaceId, previewToken, suffix, search: parsed.search };
}