<?php
namespace App\Handlers\Registrators;

use App\Enumerations\Exceptions\EnumerationExistsException;
use App\Handlers\Registrators\Items\SettingExtension;

class SettingsExtensionRegistrator
{
    protected $settingsExtensions;

    function __construct($app)
    {
        $this->settingsExtensions = [];
    }

    /**
     * Method for registering new settings extensions/parts
     *
     * @param $sectionId
     * @param $sectionName
     * @param $sectionView
     *
     * @throws EnumerationExistsException
     */
    public function register($sectionId, $sectionName, $sectionView)
    {
        $this->checkIfRegistered($sectionId);

        // register new extension
        $this->settingsExtensions[$sectionId] = new SettingExtension($sectionId, $sectionName, $sectionView);
    }

    /**
     * Registers new setting part - only as SettingExtension directly
     *
     * @param SettingExtension $extension
     */
    public function registerObject(SettingExtension $extension)
    {
        $this->checkIfRegistered($extension->getId());

        $this->settingsExtensions[$extension->getId()] = $extension;
    }

    /**
     * Getter for all registered extensions
     *
     * @return array
     */
    public function get()
    {
        // sort registered extensions by key
        ksort($this->settingsExtensions);
        
        return $this->settingsExtensions;
    }

    /**
     * Checks if this section is not already defined
     *
     * @param $sectionId
     *
     * @throws EnumerationExistsException
     */
    private function checkIfRegistered($sectionId)
    {
        if (isset($this->settingsExtensions[$sectionId])) {
            throw new EnumerationExistsException('Already existing key ' . $sectionId);
        }
    }
}