php-spark/plugins/com.noccy.watcher/Commands/WatchCommand.php

<?php

namespace SparkPlug\Com\Noccy\Watcher\Commands;

use Spark\Commands\Command;
use SparkPlug;
use SparkPlug\Com\Noccy\ApiClient\Api\Method;
use SparkPlug\Com\Noccy\ApiClient\ApiClientPlugin;
use SparkPlug\Com\Noccy\ApiClient\Log\RequestData;
use SparkPlug\Com\Noccy\ApiClient\Request\RequestBuilder;
use SparkPlug\Com\Noccy\Watcher\Rule;
use SparkPlug\Com\Noccy\Watcher\WatcherPlug;
use Symfony\Component\Console\Helper\Table;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

class WatchCommand extends Command
{
    protected function configure()
    {
        $this->setName("watch")
            ->setDescription("Watch files and take action when they are modified")
            ->addOption("interval", "N", InputOption::VALUE_REQUIRED, "Interval between polls", 5)
            ;
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        /** @var WatcherPlug $plugin */
        $plugin = get_plugin('com.noccy.watcher');
        $config = read_config('watchers.json');

        $iv = max(1, (int)$input->getOption('interval'));

        if (!($plugin && $config)) {
            $output->writeln("<error>Missing or bad config file watchers.json?</>");
            return Command::FAILURE;
        }

        $watcher = $plugin->getFileWatcher();

        foreach ($config['watchers'] as $ruleconf) {
            $rule = Rule::createFromConfig($ruleconf);
            $watcher->addRule($rule);
        }

        while (true) {
            $watcher->loop();
            sleep($iv);
        }

        return Command::SUCCESS;
    }
}