import React from 'react';

import siteMetadata from '@/data/siteMetadata';
import dynamic from 'next/dynamic';
import { PostFrontMatter } from 'types/PostFrontMatter';

interface Props {
  frontMatter: PostFrontMatter;
}

const UtterancesComponent = dynamic(
  () => {
    return import('@/components/comments/Utterances');
  },
  { ssr: false }
);
const GiscusComponent = dynamic(
  () => {
    return import('@/components/comments/Giscus');
  },
  { ssr: false }
);
const DisqusComponent = dynamic(
  () => {
    return import('@/components/comments/Disqus');
  },
  { ssr: false }
);
const CusdisComponent = dynamic(
  () => {
    return import('@/components/comments/Cusdis');
  },
  { ssr: false }
);
const CommentoComponent = dynamic(
  () => {
    return import('@/components/comments/Commento');
  },
  { ssr: false }
);

const Comments = ({ frontMatter }: Props) => {
  let term;
  switch (
    siteMetadata.comment.giscusConfig.mapping ||
    siteMetadata.comment.utterancesConfig.issueTerm
  ) {
    case 'pathname':
      term = frontMatter.slug;
      break;
    case 'url':
      term = window.location.href;
      break;
    case 'title':
      term = frontMatter.title;
      break;
  }
  return (
    <div id="comment">
      {siteMetadata.comment && siteMetadata.comment.provider === 'giscus' && (
        <GiscusComponent mapping={term} />
      )}
      {siteMetadata.comment &&
        siteMetadata.comment.provider === 'utterances' && (
          <UtterancesComponent issueTerm={term} />
        )}
      {siteMetadata.comment && siteMetadata.comment.provider === 'disqus' && (
        <DisqusComponent frontMatter={frontMatter} />
      )}
      {siteMetadata.comment && siteMetadata.comment.provider === 'cusdis' && (
        <CusdisComponent frontMatter={frontMatter} />
      )}
      {siteMetadata.comment && siteMetadata.comment.provider === 'commento' && (
        <CommentoComponent frontMatter={frontMatter} />
      )}
    </div>
  );
};

export default Comments;