Kakise/Kaki-Static

const express = require('express');
const router = express.Router();
const tags = require('../services/tags.js');
const marked = require('marked');
const toRead = require('reading-time');
const i18n = require('intl');
Intl.DateTimeFormat = i18n.DateTimeFormat;
let postArr = [];

// Middleware
function execQuery(req, res, next) {
    // Get the article list
    tags.listTags(req.params.tag).then(list => {
        postArr = list.items;
        postArr.forEach(article => {
            article.toRead = Math.trunc(parseInt(toRead(article.fields.article).time, 10) / 60000); // Return an estimation in minutes
            article.fields.date = new Intl.DateTimeFormat(process.env.LANG, {
                weekday: "long",
                year: "numeric",
                month: "long",
                day: "numeric",
                hour: "numeric",
                minute: "numeric"
            }).format(new Date(article.fields.date));
            article.fields.date = article.fields.date.charAt(0).toUpperCase() + article.fields.date.slice(1); // Force the first letter to be capitalized
        });
        next();
    }).catch(error => {
        const err = new Error(error.message);
        err.status = 400;
        next(err);
    });

}

router.get('/:tag', execQuery, (req, res, next) => {
    // Error handler
    res.render('tags', {
        articles: postArr,
        md: marked,
        version: require("../package.json").version,
        tag: req.params.tag
    });
});

module.exports = router;