import { pages as posts } from 'site/prebuild/blog.mjs'
import { getPostSlugPaths } from 'site/components/mdx/posts/utils.mjs'
import { serverSideTranslations } from 'next-i18next/serverSideTranslations'
import { useDynamicMdx } from 'shared/hooks/use-dynamic-mdx.mjs'
import { useCallback } from 'react'
import { PostLayout, ns as layoutNs } from 'site/components/layouts/post.mjs'
import { PostArticle, ns as postNs } from 'site/components/mdx/posts/article.mjs'
import { PageWrapper, ns as pageNs } from 'shared/components/wrappers/page.mjs'

const namespaces = [...layoutNs, ...postNs, ...pageNs]

/*
 * Each page MUST be wrapped in the PageWrapper component.
 * You also MUST spread props.page into this wrapper component
 * when path and locale come from static props (as here)
 * or set them manually.
 */
const BlogPage = ({ locale, slug, page }) => {
  // function to load the correct markdown
  const loader = useCallback(() => import(`orgmarkdown/blog/${slug}/${locale}.md`), [slug, locale])
  // load the markdown
  const { frontmatter, MDX } = useDynamicMdx(loader)

  return (
    <PageWrapper
      {...page}
      locale={locale}
      title={frontmatter.title}
      layout={(props) => <PostLayout {...props} {...{ slug: page.path.join('/'), frontmatter }} />}
    >
      <PostArticle
        {...{
          slug,
          frontmatter,
          MDX,
          page,
        }}
      />
    </PageWrapper>
  )
}

/*
 * getStaticProps() is used to fetch data at build-time.
 *
 * On this page, it passes the name of the bundle to be loaded on the client.
 *
 * This, in combination with getStaticPaths() below means this
 * page will be used to render/generate all blog content.
 *
 * To learn more, see: https://nextjs.org/docs/basic-features/data-fetching
 */
export async function getStaticProps({ params, locale }) {
  const { slug } = params

  return {
    props: {
      slug,
      locale,
      ...(await serverSideTranslations(locale, namespaces)),
      page: {
        locale,
        path: ['blog', slug],
      },
    },
  }
}

export const getStaticPaths = async () => {
  return {
    paths: getPostSlugPaths(posts),
    fallback: 'blocking',
  }
}

export default BlogPage