AlgoliaCommands.php

<?php
if (! (defined('WP_CLI') && WP_CLI)) {
    return;
}

class Algolia_Command {
    public function reindex($args, $assoc_args) {
        ...
    }
    
    public function get_config($args, $assoc_args) {
        ...
    }

    public function set_config($args, $assoc_args) {
        ...
    }
}

WP_CLI::add_command('algolia', 'Algolia_Command');