<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class AddAmiFlushEventsCron extends Migration
{
    const CRON_ENTRY = '*/5 * * * * /usr/bin/php /var/www/ccsystem/artisan ami:flush-events >/dev/null 2>&1';

    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        $output = shell_exec('crontab -l');

        if (strpos($output, 'ami:flush-events') !== false) {
            return;
        }

        file_put_contents('/tmp/crontab.txt', $output . self::CRON_ENTRY . PHP_EOL);
        exec('crontab /tmp/crontab.txt');
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        $output = shell_exec('crontab -l');
        $lines = explode(PHP_EOL, trim($output));
        $lines = array_filter($lines, function ($line) {
            return strpos($line, 'ami:flush-events') === false;
        });
        file_put_contents('/tmp/crontab.txt', implode(PHP_EOL, $lines) . PHP_EOL);
        exec('crontab /tmp/crontab.txt');
    }
}