Kirby Thumbnail Generator on steroids

images.php

<?php

define('DS', DIRECTORY_SEPARATOR);
require(__DIR__ . DS . 'kirby' . DS . 'bootstrap.php');

class ThumbThumbMock extends Thumb
{
    public function __construct($source, array $params = [])
    {
        $this->source = $this->result = is_a($source, 'Media') ? $source : new Media($source);
        $this->options = array_merge(static::$defaults, $this->params($params));
    }
}

class ThumbMock extends \Kirby\Component\Thumb
{
    private $jobs = [];

    public function configure()
    {
        parent::configure();
    }


    public function create($file, $params)
    {
        $this->jobs[] = [
            'file' => $file->root(),
            'dst' => (new ThumbThumbMock($file, $params))->destination()->root(),
            'params' => $params,
        ];

        return $file;
    }

    public function getJobs()
    {
        return $this->jobs;
    }
}

$kirby = kirby();
$site = $kirby->site();

$kirby->extensions();
$kirby->models();
$kirby->plugins();

$kirby->component('thumb', 'ThumbMock');

if (!isset($argv[1])) {
    die('Usage: php images.php [path-to-page]' . PHP_EOL);
}

$page = page($argv[1]);

if (empty($page)) {
    die('Page not found: ' . $argv[1] . PHP_EOL);
}

$kirby->render($page);

file_put_contents('image_jobs.json', json_encode($kirby->component('thumb')->getJobs(), JSON_PRETTY_PRINT));

jpgjpgjpg.js

/**
 * npm install sharp mkdirp progress
 */

const sharp = require('sharp');
const mkdirp = require('mkdirp');
const path = require('path');
const ProgressBar = require('progress');
const jobs = require('./image_jobs.json');

const bar = new ProgressBar('Thumbnailing: [:bar] :rate/tps :percent :etas', {total: jobs.length});

jobs.forEach(function (e) {
    mkdirp.sync(path.dirname(e.dst));

    const t =
        sharp(e.file)
            .resize(parseInt(e.params.width, 10), null);

    if (e.params.blurred) {
        t.blur(30);
    }

    t
        .jpeg({quality: e.params.quality, chromaSubsampling: '4:4:4'})
        .toFile(e.dst)
        .then(function () {
            bar.tick();
        })

});