Sort videos downloaded from O'Reily Media as per their table of contents

format-toc.js

const toc = require("./toc.json");
const fs = require("fs").promises;

tocU = toc.map(i => {
  i.key = i.key.replace("/", "_");
  i.entries = i.entries.map(e => e.replace("?", "").replace("/", "_"));
  return i;
});

async function getVideosFromDirectory() {
  const files = await fs.readdir("./manning-sls");
  const mp4s = files.filter(i => i.includes(".mp4"));
  const videos = mp4s.reduce((acc, v) => {
    const regex = /(.*)(-.*)$/;
    acc[regex.exec(v)[1]] = v;
    return acc;
  }, {});

  return videos;
}

async function createSectionAndMoveFiles(key, entries, videos) {
  await fs.mkdir(`./dump1/${key}`);
  for await (const e of entries) {
    const video = videos[e.slice(3)];
    await fs.copyFile(`./manning-sls/${video}`, `./dump1/${key}/${e}.mp4`);
  }
}

async function main() {
  const videos = await getVideosFromDirectory();
  for await (const { key, entries } of tocU) {
    await createSectionAndMoveFiles(key, entries, videos);
  }
}

main();

move-files

const toc = require("./toc.json");
const fs = require("fs");

const videos = fs
  .readdirSync("./sls")
  .filter(i => i.includes(".mp4"))
  .reduce((acc, v) => {
    const regex = /(.*)(-.*)$/;
    acc[regex.exec(v)[1]] = v;
    return acc;
  }, {});

fs.writeFileSync("./videos.json", JSON.stringify(videos, null, 4));

toc.forEach(({ key, entries }) => {
  fs.mkdirSync(`./dump/${key.replace("/", "_")}`);
  entries.forEach(e => {
    const video =
      videos[
        e
          .slice(3)
          .replace("?", "")
          .replace("/", "_")
      ];

    console.log(video, e);
    fs.copyFileSync(
      `./sls/${video}`,
      `./dump/${key.replace("/", "_")}/${e
        .replace("/", "_")
        .replace("?", "")}.mp4`
    );
  });
});