pmcelhaney / counterfact / 8990097563

import nodePath from "node:path";

import { fileURLToPath } from "node:url";

import createDebug from "debug";

import Handlebars from "handlebars";

import type Koa from "koa";

import { readFile } from "../util/read-file.js";

// eslint-disable-next-line no-underscore-dangle

const __dirname = nodePath.dirname(fileURLToPath(import.meta.url));

const debug = createDebug("counterfact:server:page-middleware");

Handlebars.registerHelper("escape_route", (route: string) =>

  route.replaceAll(/[^\w/]/gu, "-"),

);

export function pageMiddleware(

  pathname: string,

  templateName: string,

  locals: { [key: string]: unknown },

) {

  return async (ctx: Koa.ExtendableContext, next: Koa.Next) => {

    const pathToHandlebarsTemplate = nodePath

      .join(__dirname, `../client/${templateName}.html.hbs`)

      .replaceAll("\\", "/");

    debug("pathToHandlebarsTemplate: %s", pathToHandlebarsTemplate);

    const render = Handlebars.compile(await readFile(pathToHandlebarsTemplate));

    if (ctx.URL.pathname === pathname) {

      ctx.body = render(locals);

      return;

    }

    // eslint-disable-next-line  n/callback-return

    await next();

  };

}