init.js

   1 const fs = require("fs")
   2 const download = require("download")
   3 const cliProgress = require("cli-progress")
   4 const unzipper = require("unzipper")
   5 const pdfkit = require("pdfkit")
   6
   7 const url = "http://images.mangafreak.net/downloads/Horimiya_"
   8 const chapters = 124
   9
  10 const bar = new cliProgress.SingleBar({}, cliProgress.Presets.legacy)
  11 bar.start(chapters, 0, {speed: "N/A"})
  12
  13 const doc = new pdfkit({autoFirstPage: false})
  14 doc.pipe(fs.createWriteStream("Horimiya.pdf"))
  15
  16 fs.promises.rm("pages", {recursive: true, force: true})
  17         .then(_ => fs.promises.mkdir("pages"))
  18         .then(_ => Promise.all(new Array(chapters)
  19                 .fill(null)
  20                 .map((_, i) => i + 1)
  21                 .map(n => download(url + n)
  22                         .pipe(unzipper.Extract({path: "pages"}))
  23                         .promise()
  24                         .then(_ => bar.increment())
  25                 )
  26         ))
  27         .then(_ => bar.stop())
  28         .then(_ => fs.promises.readdir("pages"))
  29         .then(files => files
  30                 .sort(new Intl.Collator(undefined, {numeric: true}).compare)
  31                 .map(file => "pages/" + file)
  32                 .map(file => doc.openImage(file))
  33                 .forEach(img => doc.addPage({size: [img.width, img.height]}).image(img, 0, 0))
  34         )
  35         .then(_ => doc.end())