tningjs/sam-and-his-friends

/**
 * @module src/app.js
 * Entry point of the source code
 * Init express app and mount middlewares
 */
const createError = require('http-errors');
const express = require('express');
const path = require('path');
const hbs = require('hbs');

hbs.registerPartials(path.join(__dirname, 'views/templates/partials'));
require('./views/hbs-helpers');

const { isPro } = require('./utils/isPro.js');
const { siteTitle } = require('./utils/config');
const indexRouter = require('./routes/index');
const singlePostRouter = require('./routes/single-post');

/**
 * Init express app
 * @param {object} app - express application
 * @returns app - express application with custom middlewares
 */
module.exports = (app = express()) => {
    app.set('views', path.join(__dirname, 'views/templates'));
    app.set('view engine', 'hbs');
    app.set('view options', { layout: 'layout-fingerprinted/default' });

    app.use(express.static(path.join(__dirname, '../output')));

    app.use('/', indexRouter());
    app.use('/single-post', singlePostRouter());

    // catch 404 and forward to error handler
    app.use((req, res, next) => {
        next(createError(404));
    });

    app.use(onError);

    return app;
};

// eslint-disable-next-line no-unused-vars
function onError(err, req, res, next) {
    const isProd = isPro();
    const error = isProd ? {} : err;

    res.status(err.status || 500);

    if (err.status === 404) {
        res.render('404', {
            siteTitle,
            layout: 'layout-fingerprinted/404',
        });
    } else {
        res.render('error', {
            error,
            isProd,
            siteTitle,
            layout: 'layout-fingerprinted/error',
        });
    }
}