documenso/packages/lib/utils/document-auth.ts

import type { Envelope, Recipient } from '@prisma/client';

import type {
  TDocumentAuthOptions,
  TRecipientAccessAuthTypes,
  TRecipientActionAuthTypes,
  TRecipientAuthOptions,
} from '../types/document-auth';
import { DocumentAuth } from '../types/document-auth';
import { ZDocumentAuthOptionsSchema, ZRecipientAuthOptionsSchema } from '../types/document-auth';

type ExtractDocumentAuthMethodsOptions = {
  documentAuth: Envelope['authOptions'];
  recipientAuth?: Recipient['authOptions'];
};

/**
 * Parses and extracts the document and recipient authentication values.
 *
 * Will combine the recipient and document auth values to derive the final
 * auth values for a recipient if possible.
 */
export const extractDocumentAuthMethods = ({
  documentAuth,
  recipientAuth,
}: ExtractDocumentAuthMethodsOptions) => {
  const documentAuthOption = ZDocumentAuthOptionsSchema.parse(documentAuth);
  const recipientAuthOption = ZRecipientAuthOptionsSchema.parse(recipientAuth);

  const derivedRecipientAccessAuth: TRecipientAccessAuthTypes[] =
    recipientAuthOption.accessAuth.length > 0
      ? recipientAuthOption.accessAuth
      : documentAuthOption.globalAccessAuth;

  const derivedRecipientActionAuth: TRecipientActionAuthTypes[] =
    recipientAuthOption.actionAuth.length > 0
      ? recipientAuthOption.actionAuth
      : documentAuthOption.globalActionAuth;

  const recipientAccessAuthRequired = derivedRecipientAccessAuth.length > 0;

  const recipientActionAuthRequired =
    derivedRecipientActionAuth.length > 0 &&
    !derivedRecipientActionAuth.includes(DocumentAuth.EXPLICIT_NONE);

  return {
    derivedRecipientAccessAuth,
    derivedRecipientActionAuth,
    recipientAccessAuthRequired,
    recipientActionAuthRequired,
    documentAuthOption,
    recipientAuthOption,
  };
};

/**
 * Create document auth options in a type safe way.
 */
export const createDocumentAuthOptions = (options: TDocumentAuthOptions): TDocumentAuthOptions => {
  return {
    globalAccessAuth: options?.globalAccessAuth ?? [],
    globalActionAuth: options?.globalActionAuth ?? [],
  };
};

/**
 * Create recipient auth options in a type safe way.
 */
export const createRecipientAuthOptions = (
  options: TRecipientAuthOptions,
): TRecipientAuthOptions => {
  return {
    accessAuth: options?.accessAuth ?? [],
    actionAuth: options?.actionAuth ?? [],
  };
};