import { ensureIdentity } from '@app/server/helpers';
import { IdentityContext } from '@app/server/identity';
import { prisma } from '@app/server/prisma/client';
import { MutationBookDeleteArgs } from '@generated/types';

export async function BookDeleteResolver(
  _: any,
  { id }: MutationBookDeleteArgs,
  { identity }: IdentityContext
): Promise<void> {
  ensureIdentity(identity);

  const model = await prisma.book.findUniqueOrThrow({
    where: { id }
  });

  if (identity.id !== model.authorId) throw new Error('Operation is not permitted.');

  await prisma.book.delete({
    where: { id }
  });
}