bin.js

#!/usr/bin/env node

const { program } = require("commander");
const fs = require("fs");
const del = require("del");
const handwritten = require("./index");
const COLORS = require("./constants");
const { version, description } = require("../package.json");

program
  .version(version)
  .description(description)
  .requiredOption("-f, --file <file-name>", "input file name")
  .requiredOption("-o, --output <name>", "output file/folder name")
  .option(
    "-r, --ruled",
    "use ruled paper as the background image instead of plain white image"
  )
  .option("-i, --images <png|jpeg>", "get output as images instead of pdf")
  .option(
    "-k, --inkColor <red|blue>",
    "use custom ink colors (red, blue) for the document"
  )
  .parse(process.argv);

const optionalargs = {};
let error;
if (program.images) {
  if (program.images !== "png" && program.images !== "jpeg") {
    error = true;
  } else {
    optionalargs.outputtype = `${program.images}/buf`;
  }
}
if (program.ruled) {
  optionalargs.ruled = true;
}
if (program.inkColor) {
  if (program.inkColor !== COLORS.RED && program.inkColor !== COLORS.BLUE) {
    error = true;
  } else {
    optionalargs.inkColor = program.inkColor;
  }
}
async function main(file, optional, output) {
  try {
    const rawtext = fs.readFileSync(file).toString();
    const [out] = await Promise.all([
      handwritten(rawtext, optional),
      del(output, { force: true }),
    ]);
    if (!optional.outputtype) {
      out.pipe(fs.createWriteStream(output));
      console.log({
        success: `Saved pdf as "${output}"!`,
      });
    } else {
      fs.mkdirSync(output);
      for (let i = 0; i < out.length; i += 1) {
        fs.writeFileSync(
          `${output}/${i}.${optional.outputtype.slice(0, -4)}`,
          out[i]
        );
      }
      console.log({
        success: `Saved the images in "${output}"!`,
      });
    }
  } catch (e) {
    console.error(e);
  }
}
if (!error && program.args.length === 0) {
  main(program.file, optionalargs, program.output);
} else {
  console.error({
    error: "Invalid arguments!",
  });
}