save-index.js

const ejs = require("ejs")
const fs = require("fs")
const constants = require("./constants.json")

function saveIndex(articles, outputFile, title, banner) {
  articles.sort((a, b) => {
    return (b.rawDate || 0) - (a.rawDate || 0)
  })

  return new Promise((resolve, reject) => {
    fs.readFile("templates/index.ejs", (err, data) => {
      if (err) {
        return reject(err)
      }

      const indexBodyHTML = ejs.render(data.toString(), {
        articles: articles.filter((article) => {
          return !article.hidden
        }),
        banner,
      })

      fs.readFile("templates/layout.ejs", (err, data) => {
        const indexHTML = ejs.render(data.toString(), {
          title: title || constants.defaultTitle,
          description: constants.defaultDescription,
          body: indexBodyHTML,
        })

        fs.writeFile(outputFile, indexHTML, (err) => {
          if (err) {
            return reject(err)
          }

          resolve("ok!")
        })
      })
    })
  })
}

module.exports = saveIndex