index.js

const fs = require("fs-extra")
const { formatLatex, replaceInPath } = require("./common")

const contentPath = "./content/"
const buildPath = "./build/"

const indexHtml = "index.html"

const readFromPath = path => {
  return fs
    .readFile(contentPath + path)
    .then(file => {
      return formatLatex(file)
    })
    .then(output => {
      return fs.writeFile(buildPath + path, output)
    })
    .then(() => {
      console.log("Done with " + path)
    })
}

const replaceTaulukkoWithBuild = file => {
  return fs.readFile(file).then(data => {
    var path = replaceInPath(data.toString())
    return fs.writeFile(file, path, "utf8")
  })
}

const getFilesFromDir = path => {
  return fs.readdir(path)
}

const build = () => {
  return fs
    .ensureDir(buildPath)
    .then(() => replaceTaulukkoWithBuild(indexHtml))
    .then(() => getFilesFromDir(contentPath))
    .then(files => {
      return Promise.all(files.map(readFromPath))
    })
}

build()
  .then(() => {
    console.log("Finished")
  })
  .catch(err => {
    console.error(err)
  })