Thoughts and suggestions on my first plugin?

I was wondering if I could get some opinions and suggestions on my first pmmp plugin.
Please keep in mind that this is my first plugin and I'm still fairly new to pmmp and MCPE/Win10 plugin development (though I have been working with php for quite some time now), so I'm still unaware of some of the best practices for development.

As for the plugin itself, I decided to make a simple server-help "AI" using the MonkeyLearn API.

Spoiler: plugin.yml

Code:

name: HelperAI
main: Redux\Main
version: 1.0.0
api: 3.0.0-ALPHA2

commands:
 ask:
  description: "Ask the AI a question"
  usage: "/ask <question>"

Spoiler: Main.php

Code:

<?php

namespace Redux;

use Redux\Config;
use Redux\Monkey;
use Redux\Commands;

use pocketmine\plugin\PluginBase;
use pocketmine\event\Listener;


class Main extends PluginBase implements Listener {

    public $config;
    public $Monkey;

    public function onLoad() {
        $this->getLogger()->info("HelperAI by Redux now loaded.");
    }

    public function onEnable() {
          $this->getLogger()->info("HelperAI by Redux now enabled.");

          $this->config = new Config();
          $this->config = $this->config->load();

          if ($this->config["Sandbox"]===true) {
          $this->getLogger()->info("§6§lLoading HelperAI in sandbox mode.");
          $this->getLogger()->info(print_r($this->config, true));
           }
       
          $this->Monkey = new Monkey($this->config["MonkeyKey"], $this->config["MonkeyModuleID"]);

          $this->getCommand("ask")->setExecutor(new Commands($this));
    }

    public function onDisable() {
        $this->getLogger()->info("HelperAI by Redux now disabled.");
    }
}

Spoiler: Config.php

Code:

<?php

namespace Redux;

class Config {
   
    public function load() {

        if (!file_exists("./plugins/HelperAI") && !is_dir("./plugins/HelperAI")) {
           mkdir("./plugins/HelperAI");
           $defaultAIKey         = "MONKEYLEARN KEY HERE";
           $defaultModuleID      = "MONKEYLEARN MODULE ID HERE";
           $defaultMessageTop    = "§a==========§6§lHelperAI§r§a==========§r";
           $defaultMessageBottom = "§a============================§r";
           $defaultConfig        = "MonkeyKey: $defaultAIKey\nMonkeyModuleID: $defaultModuleID\nTop Text: $defaultMessageTop\nBottom Text: $defaultMessageBottom\nSandbox: true\n\nResponses:\n default: §cI am not yet configured to properly answer that type of question.§r";

            $yaml = fopen("./plugins/HelperAI/config.yml", "wb");
            fwrite($yaml, $defaultConfig);
            fclose($yaml);
        }

        $config = file_get_contents("./plugins/HelperAI/config.yml");
        $config = yaml_parse($config);

        return $config;
    }
}

Spoiler: Commands.php

Code:

<?php

namespace Redux;

use Redux\Config;
use Redux\Monkey;
use Redux\Commands;

use pocketmine\plugin\PluginBase;
use pocketmine\command\Command;
use pocketmine\command\CommandSender;
use pocketmine\command\CommandExecutor;


class Commands implements CommandExecutor {

    private $server;

    public function __construct($server) {
        $this->server = $server;
    }

    public function onCommand(CommandSender $sender, Command $command, $label, array $args) {
        switch($command->getName()) {
            case "ask":
                if (count($args) == 0) {
                    $sender->sendMessage("§4§l[ERROR]§r§c You must ask a question!§r");
                    return false;
                }

                $sender->sendMessage("§aAsking your question. Please wait...");

                $question = implode(" ", $args);
                $reply = json_decode($this->server->Monkey->ask($question, $this->server->config["Sandbox"]), true);

                if (isset($this->server->config["Responses"][$reply["result"][0][0]["label"]])) {
                    $answer = $this->server->config["Responses"][$reply["result"][0][0]["label"]];
                } else {
                    $answer = $this->server->config["Responses"]["default"];
                }
               
                $sender->sendMessage($this->server->config["Top Text"]."\n".$answer."\n".$this->server->config["Bottom Text"]);
                return true;
        }
    }
}

Spoiler: Monkey.php

Code:

<?php

namespace Redux;

class Monkey {

    private $key;
    private $module_id;
    private $monkey;
   
    public function __construct($key, $module_id) {
        $this->key = $key;
        $this->module_id = $module_id;
    }

    public function ask($question, $sandbox=false) {
        $payload = ["text_list" => $question];
        if ($sandbox===true) {
            $url = "https://api.monkeylearn.com/v2/classifiers/$this->module_id/classify/?sandbox=1";
        } else {
            $url = "https://api.monkeylearn.com/v2/classifiers/$this->module_id/classify/";
        }
        $curl = curl_init();

        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_POSTFIELDS, $payload);
        curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
        curl_setopt($curl, CURLOPT_HTTPHEADER, array('Authorization: Token '.$this->key));
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);

        $response = curl_exec($curl);
        curl_close($curl);
        return $response;
    }
}

To use the plugin, you first need to make a monkey on http://monkeylearn.com/. The `Responses` section of the config relate to the children of the Root in your monkey.
An example monkey setup looks like this:

Each child represents a different response. An example config.yml with responses would be:

The `MonkeyKey` is your MonkeyLearn authentication token. The `MonkeyModuleID` is your MonkeyLearn ID of your Module/Monkey. `Top Text` is the text shown above the response, and `Bottom Text` is the text shown below the response. `Sandbox` determines if the Monkey is still in Sandbox mode or Live API mode.

To ask the AI a question, you would use `/ask QUESTION`

The full source code plus a compiled phar can be found here https://github.com/ReduxRedstone/MCPE-HelperAI

Is there anything I should change or improve on this? This is my very first plugin, so I know there HAS to be room for improvement

 

Actually, I didn't know that Config already existed that would have saved me some time xD
I also completely forgot about API call limit my bad. I'll add that in as soon as I get home to make changes.