import { extname, resolve } from "path";
import { readFileSync } from "fs";
import { marked } from "marked";
import * as mammoth from "mammoth";
import * as san from "sanitize-html";
import { sanitizeConf } from "../constants";
import { FormChapter } from "~/lib/client/types/form/story";

export default async function (bodyObj: FormChapter): Promise<string> {
	let str: string = "";
	if (bodyObj.content) {
		str = bodyObj.content;
	} else if (bodyObj.file) {
		let ext = extname(bodyObj.file).toLowerCase();
		if (ext === "md" || ext === "markdown")
			str = marked.parse(
				readFileSync(resolve(`tmp/${bodyObj.file}`)).toString(),
			);
		else if (ext === "doc" || ext === "docx")
			str = (
				await mammoth.convertToHtml(
					{ path: resolve(`tmp/${bodyObj.file}`) },
					{ styleMap: ["b => b", "i => i", "u => u"] },
				)
			).value;
		else
			throw createError({
				statusCode: 400,
				message: "bad file type",
			});
	} else {
		throw createError({
			statusCode: 400,
			message: "no content",
		});
	}
	return san(str, sanitizeConf);
}