src/Message/Handler.php


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<?php

namespace App\Message;

use App\Message\Overview;

/**
* Handles messages and context
*/
class Handler
{
    protected $important = [];

    protected $importantValues = [];

    public function __construct($important)
    {
        $this->setupImportant($important);
    }
    /**
     * Set's up important attributes on this class
     */
    public function setupImportant($important = [])
    {
        $this->important = $important;
    }

    protected function setImportantValues($array)
    {
        foreach ($array as $name => $value) {
            $this->addImportantValue($name, $value);
        }
    }

    protected function addImportantValue($name, $value)
    {
        if (in_array($name, $this->important)) {
            $this->importantValues[$name] = $value;
        }

        return $name;
    }

    public function returnImportant($name)
    {
        if (!array_key_exists($name, $this->importantValues)) {
            throw new \Exception('The var ' . $name . ' is not set in this context');
        }
        
        return $this->importantValues[$name];
    }

    public function __call($name, $arguments)
    {
        if (strpos($name, 'get') === 0) {
            $this->returnImporant(substr($name, 3));
        }
    }

    public function renderOpeningMessage()
    {
            $overview = new Overview();
            $message = $overview->renderMessage();

            $this->setImportantValues($overview->getImportantValues());

            return $message;
    }
}