<?php
namespace App\Helpers;

use App\Models\WidgetArea;

class WidgetAreas
{
    /**
     * @var array list of inicialized widget areas
     */
    protected static $widgetAreas = [];

    /**
     * Renderer for whole widget area.
     *
     * @param $uniqueCode
     *
     * @return mixed
     */
    public static function render($uniqueCode)
    {
        if (isset(self::$widgetAreas[$uniqueCode])) {
            echo self::$widgetAreas[$uniqueCode];
            return;
        }

        $widgetArea = new WidgetArea();
        $widgets = $widgetArea->getWidgets($uniqueCode)
                              ->get();

        $content = '';
        foreach ($widgets as $widget) {
            $handler = $widget->widget_type_handler;
            $presenter = call_user_func([$handler, 'getPresenter']);

            $content .= call_user_func([$presenter, 'render'], json_decode($widget->settings));
        }

        // cache this widget area
        self::$widgetAreas[$uniqueCode] = $content;

        echo $content;
    }
}