import { IdentityContext } from '@app/server/identity';
import { prisma } from '@app/server/prisma/client';
import { BookManyOutput, QueryBookManyArgs } from '@generated/types';
import { Prisma } from '@prisma/client';
import { toBookSchema } from './mappers/bookMapper';

export async function BookManyResolver(
  _: any,
  { input }: QueryBookManyArgs,
  { req, res, identity }: IdentityContext
): Promise<BookManyOutput> {
  const { filter } = input;
  const terms = filter.terms?.toLowerCase();

  const bookWhere: Prisma.BookWhereInput = {
    OR:
      terms != null ? [{ title: { contains: terms } }, { author: { username: terms } }] : undefined
  };

  const items = await prisma.book.findMany({
    where: bookWhere,
    skip: filter.offset ?? 0,
    take: filter.size ?? 10,
    orderBy: {
      createdAt: 'desc'
    }
  });

  return {
    items: await Promise.all(items.map(value => toBookSchema(value, { req, res, identity }))),
    total: await prisma.book.count({ where: bookWhere })
  };
}