import EleventyFetch from '@11ty/eleventy-fetch';

const { POSTGREST_URL, POSTGREST_API_KEY } = process.env;

const fetchAllBooks = async () => {
  try {
    return await EleventyFetch(`${POSTGREST_URL}/optimized_books?order=date_finished.desc`, {
      duration: '1h',
      type: 'json',
      fetchOptions: {
        method: 'GET',
        headers: {
          'Content-Type': 'application/json',
          Authorization: `Bearer ${POSTGREST_API_KEY}`
        }
      }
    });
  } catch (error) {
    console.error('Error fetching books:', error);
    return [];
  }
};

const sortBooksByYear = (books) => {
  const years = {};
  books.forEach((book) => {
    const year = book.year;
    if (!years[year]) {
      years[year] = { value: year, data: [book] };
    } else {
      years[year].data.push(book);
    }
  });
  return Object.values(years).filter((year) => year.value);
};

const currentYear = new Date().getFullYear();

export default async function () {
  const books = await fetchAllBooks();
  const sortedByYear = sortBooksByYear(books);
  const booksForCurrentYear =
    sortedByYear
      .find((yearGroup) => yearGroup.value === currentYear)
      ?.data.filter((book) => book.status === 'finished') || [];

  return {
    all: books,
    years: sortedByYear,
    currentYear: booksForCurrentYear,
    feed: books.filter((book) => book.feed),
    daysRead: books[0]?.days_read
  };
}