Александр Таратин

'use strict';

const glob = require('glob');
const fs = require('fs');
const path = require('path');
const exec = require('child_process').exec;

function run(command) {
    var pr = exec(command);
    //pr.stdout.pipe(process.stdout);
    //pr.stderr.pipe(process.stderr);
    pr.stdout.on('data', function (data) {
        process.stdout.write(data);
    });
    pr.stderr.on('data', function (data) {
        process.stderr.write(data);
    });
}

function optImages(files) {
    require('mkdirp').sync('raw');
    const rawFolder = path.normalize(process.cwd() + '/raw/');
    files.forEach(function (file) {
        let filePathParts = path.parse(file);
        let rawPath = rawFolder + filePathParts.base;
        fs.access(rawPath, function (err) {
            if (err) {
                let format = filePathParts.ext.substr(1);
                if (format == 'png') {
                    run('@COPY "' + file + '" /B "' + rawPath + '" /B >> nul && @pngquant --force --skip-if-large --speed 1 256 --output "' + file + '" "' + rawPath + '" && @PNGZopfli "' + file + '" 10 "' + file + '" && echo complete: "' + file + '"');
                } else if (format == 'jpg' || format == 'jpeg' || format == 'jpe' || format == 'jfif') {
                    run('@COPY "' + file + '" /B "' + rawPath + '" /B >> nul && @jpegtran -copy none -optimize -progressive "' + rawPath + '" "' + file + '" && echo complete: "' + file + '"');
                }
            }
        });
    });
}


if (process.argv.length >= 3) {
    optImages(process.argv.slice(2));
} else {
    glob(process.cwd() + '/@(*.png|*.jpg|*.jpeg|*.jpe|*.jfif)', function (err, files) {
        if (err) {
            console.error(err);
            process.exit(1);
        } else {
            if (files.length > 0) {
                optImages(files);
            }
        }
    });
}