<?php namespace Backend\Traits;

use System\Classes\SystemException;
use System\Classes\ApplicationException;
use Request;

/**
 * Inspectable Container Trait
 * Extension for controllers that can host inspectable widgets (Components, etc.)
 *
 * @package october\backend
 * @author Alexey Bobkov, Samuel Georges
 */

trait InspectableContainer
{
    public function onInspectableGetOptions()
    {
        $property = trim(Request::input('inspectorProperty'));
        if (!$property)
            throw new ApplicationException('The property name is not specified.');

        $className = trim(Request::input('inspectorClassName'));
        if (!$className)
            throw new ApplicationException('The inspectable class name is not specified.');

        $classes = class_parents($className);
        array_unshift($classes, $className);

        $traitFound = false;
        foreach ($classes as $class) {
            $traits = class_uses($class);

            if (in_array('System\Traits\PropertyContainer', $traits)) {
                $traitFound = true;
                break;
            }
        }

        if (!$traitFound)
            throw new ApplicationException('The options cannot be loaded for the specified class.');

        $obj = new $className(null);

        $methodName = 'get'.ucfirst($property).'Options';
        if (method_exists($obj, $methodName))
            $options = $obj->$methodName();
        else
            $options = $obj->getPropertyOptions($property);

        /*
         * Convert to array to retain the sort order in JavaScript
         */
        $optionsArray = [];
        foreach ($options as $value => $title) {
            $optionsArray[] = ['value' => $value, 'title' => $title];
        }

        return [
            'options' => $optionsArray
        ];
    }
}