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
  };
}