import fs from "node:fs";
import { u } from "unist-builder";
import { h } from "hastscript";
import { select } from "hast-util-select";
import { toString as hastToString } from "mdast-util-to-string";
import cssesc from "cssesc";
import toml from "smol-toml";

import { toString, toMdRaw, mdToHtmlRaw } from "./to-html.mjs";
import { getArticleYear } from "./article.mjs";
import i18n from "./i18n.mjs";

const loadMD = (listFile, suffix, lang) => {
  const listContent = [];
  for (const file of listFile) {
    console.log(`Working on ${file}`);
    const content = fs.readFileSync(`${suffix}/${file}`, "utf8");
    const mdRaw = toMdRaw(content);
    const tomlStringValue = mdRaw.children[0].value;
    const metaData = toml.parse(tomlStringValue);
    const newHTML = mdToHtmlRaw(mdRaw);

    const langR = lang || metaData.lang;

    const htmlContent = newHTML;
    const htmlRender = toString(htmlContent);

    const titleHtml = select("h1", htmlContent);
    const intro = select("p", htmlContent);
    intro.children = intro.children.filter((child) => child.tagName !== "br");

    const logo = select("img", intro);
    if (logo && logo?.properties) {
      if (logo.properties.src[0] != "/") {
        logo.properties.src = `/${suffix}/${logo.properties.src}`;
      }
      logo.properties.height = "150";
      logo.properties.width = "150";
    }

    const logoP = select("source", intro);
    if (logoP !== null) {
      logoP.properties.srcSet = `/${suffix}/${logoP.properties.srcSet}`;
    }

    titleHtml.children[0].properties.href = `/${suffix}/${file.slice(0, -3)}`;

    const title = hastToString(titleHtml);
    const domTitle = cssesc(
      title
        .replace(/\s+/g, "-")
        .replace(/['"#@]/, "")
        .toLowerCase(),
    ); // Maybe encodeURI

    console.log(langR);
    const readMore = h("a", i18n[langR]["read_more"]);

    readMore.properties.href = `/${suffix}/${file.slice(0, -3)}`;
    const pubYear = getArticleYear({ metaData });

    if (metaData.pubDate) {
      try {
        metaData.pubDateISO = metaData.pubDate.toISOString();
      } catch (error) {
        console.error(
          `Error on file ${file} with pubDate (${metaData.pubDate}): ${error}`,
        );
      }
    }

    listContent.push({
      name: file.slice(0, -3),
      content: htmlRender,
      intro: toString(u("root", [titleHtml, intro, readMore])),
      introDesc: hastToString(intro),
      imageUrl: logo?.properties?.src || "",
      metaData,
      pubYear,
      title,
      domTitle,
      url: `/${suffix}/${file.slice(0, -3)}`,
    });
  }

  return listContent;
};

export default loadMD;