import { PermissionDefinition } from './permission-definition-interface';

/**
 *
 * @param operation The GQL operation name which will be used to find associated Permissions for
 * @param permissionDefinition An object of type PermissionDefinition
 * @returns An array of permission-keys (strings) which contain the given operation
 */
export const getPermissionsForOperation = (
  operation: string,
  permissionDefinition: PermissionDefinition,
): string[] => {
  return permissionDefinition.permissions
    .filter((permission) => permission.gqlOperations?.includes(operation))
    .map((permission) => permission.key);
};

/**
 * The function reads and returns all mapped operations in the permission definition object except which are marked as IGNORE.
 * @param permissionDefinition An object of type PermissionDefinition
 */
export const getMappedOperations = (
  permissionDefinition: PermissionDefinition,
): string[] => {
  const otherOperations = permissionDefinition.permissions.map(
    (permission) => permission.gqlOperations,
  );
  const anonymousOperations =
    permissionDefinition.gqlOptions?.anonymousGqlOperations ||
    new Array<string>();

  return [
    ...new Set(
      Array<string>().concat(
        ...otherOperations.filter(Array.isArray),
        anonymousOperations,
      ),
    ),
  ];
};

/**
 * The function reads and returns operations in the permission definition object which are marked as IGNORE.
 * @param permissionDefinition An object of type PermissionDefinition
 */
export const getIgnoredOperations = (
  permissionDefinition: PermissionDefinition,
): string[] | undefined => {
  return permissionDefinition.gqlOptions?.ignoredGqlOperations;
};

/**
 * Returns all permission keys.
 * @param permissionDefinition An object of type PermissionDefinition
 */
export const getPermissionsFromDefinition = (
  permissionDefinition: PermissionDefinition,
): string[] => {
  return permissionDefinition.permissions.map((permission) => permission.key);
};