import clsx from "clsx";
import { Suspense } from "react";
import { Await } from "react-router";
import MicroModal from "micromodal";
import { ICONS_PREPEND } from "#env/env-vars";
import { Image } from "#components/images";
import { KemonoLink, LocalLink } from "#components/links";
import { Timestamp } from "#components/dates";
import { Preformatted } from "#components/formatting";
import { IComment } from "#entities/posts";

import * as styles from "./overview.module.scss";
import { IPostOverviewProps } from "./types";

interface IPostFooterProps extends Pick<IPostOverviewProps, "comments"> {
  service: string;
  profileID: string;
  profileName?: string;
}

export function PostFooter({
  comments,
  service,
  profileID,
  profileName,
}: IPostFooterProps) {
  return (
    <footer className="post__footer">
      <h2 className="site-section__subheading">Comments</h2>
      {/* TODO: comment filters */}
      <Suspense fallback={<p>Loading comments...</p>}>
        <Await resolve={comments} errorElement={<></>}>
          {(comments: IComment[]) => (
            <div
              className={clsx(
                "post__comments",
                !comments && "post__comments--no-comments"
              )}
            >
              {!comments ? (
                <p className="subtitle">No comments found for this post.</p>
              ) : (
                comments.map((comment) => (
                  <PostComment
                    comment={comment}
                    service={service}
                    postProfileID={profileID}
                    postProfileName={profileName}
                  />
                ))
              )}
            </div>
          )}
        </Await>
      </Suspense>
    </footer>
  );
}

interface IPostCommentProps {
  comment: IComment;
  postProfileID: string;
  postProfileName?: string;
  service: string;
}

function PostComment({
  comment,
  postProfileID,
  postProfileName,
  service,
}: IPostCommentProps) {
  const {
    id,
    commenter,
    commenter_name,
    revisions,
    parent_id,
    content,
    published,
  } = comment;
  const isProfileComment = commenter === postProfileID;
  const modalID = `comment-revisions-${id}`;

  return (
    <article
      className={clsx("comment", isProfileComment && "comment--user")}
      id={id}
    >
      <header className="comment__header">
        {!isProfileComment ? (
          <LocalLink id={id} className="comment__name">
            {commenter_name ?? "Anonymous"}
          </LocalLink>
        ) : (
          <>
            {/* TODO: a proper local link */}
            <KemonoLink url={id} className="comment__icon">
              <Image
                src={`${ICONS_PREPEND}/icons/${service}/${postProfileID}`}
              />
            </KemonoLink>
            <LocalLink id={id} className="comment__name">
              {postProfileName ?? "Post's profile"}
            </LocalLink>
          </>
        )}

        {revisions && revisions.length !== 0 && (
          <>
            <span
              className="comment-has-revisions fancy-link"
              data-micromodal-trigger={modalID}
              onClick={() => MicroModal.show(modalID)}
            >
              (
              <a className="fancy-link" href={`#${id}`}>
                edited
              </a>
              )
            </span>
            <div className="comment-revisions-dialog" id={modalID}>
              <div tabIndex={-1} data-micromodal-close>
                <div
                  role="dialog"
                  aria-modal="true"
                  aria-labelledby={`comment-revisions-${id}-title`}
                >
                  <section>
                    <header>
                      <h3 id={`comment-revisions-${id}-title`}>
                        Comment edits
                      </h3>

                      <button
                        data-micromodal-close
                        onClick={() => MicroModal.close(modalID)}
                      ></button>
                    </header>

                    <div id={`comment-revisions-${id}-content`}>
                      {[...revisions, comment].map((revision) => (
                        <article
                          id={`comment-${comment.id}-revision-${revision.id}`}
                        >
                          <span className="timestamp">
                            {revision.published ?? revision.added}
                          </span>
                          <span className="prose">{revision.content}</span>
                        </article>
                      ))}
                    </div>
                  </section>
                </div>
              </div>
            </div>
          </>
        )}
      </header>

      <section className="comment__body">
        {parent_id && (
          <div className="comment__reply">
            <a href={`#${parent_id}`}>
              {">>"}
              {parent_id}
            </a>
          </div>
        )}
        <Preformatted>
          <p className="comment__message">
            {service !== "boosty" ? (
              content
            ) : (
              <Preformatted className={styles.content} dangerouslySetInnerHTML={{__html: content}}/>
            )}
          </p>
        </Preformatted>
      </section>

      <footer className="comment__footer">
        <Timestamp time={published} />
      </footer>
    </article>
  );
}