stevotvr/phpbb-groupsub

<?php
/**
 *
 * Group Subscription. An extension for the phpBB Forum Software package.
 *
 * @copyright (c) 2017, Steve Guidetti, https://github.com/stevotvr
 * @license GNU General Public License, version 2 (GPL-2.0)
 *
 */

namespace stevotvr\groupsub\exception;

use phpbb\language\language;

/**
 * Group Subscription base exception class.
 */
class base extends \Exception
{
    /**
     * The parameters for the translated message.
     *
     * @var array
     */
    protected $lang_array;

    /**
     * The exceptions language file is loaded.
     *
     * @var boolean
     */
    protected $lang_loaded = false;

    /**
     * @param string       $message    The raw exception message
     * @param array|string $lang_array The parameters for the translated message
     */
    public function __construct($message = null, $lang_array = null)
    {
        parent::__construct($message);
        $this->lang_array = ($lang_array) ? (array) $lang_array : null;
    }

    /**
     * Get the translated message.
     *
     * @param language $language
     *
     * @return string The translated message
     */
    public function get_message(language $language)
    {
        $this->add_lang($language);

        if ($this->lang_array)
        {
            $lang_array = $this->translate_parts($language);
            return call_user_func_array(array($language, 'lang'), $lang_array);
        }

        return $this->message;
    }

    /**
     * Load the exceptions language file.
     *
     * @param language $language
     */
    protected function add_lang(language $language)
    {
        if ($this->lang_loaded)
        {
            return;
        }

        $language->add_lang('exceptions', 'stevotvr/groupsub');

        $this->lang_loaded = true;
    }

    /**
     * Translate the parameters of the language array.
     *
     * @param language $language
     *
     * @return array The translated language parameters
     */
    protected function translate_parts(language $language)
    {
        $lang_array = array();

        foreach ($this->lang_array as $key => $value)
        {
            if ($key === 0)
            {
                $lang_array[] = $value;
                continue;
            }

            $translated = $language->lang($value);
            if ($translated === $value && strpos($value, 'EXCEPTION_FIELD_') === 0)
            {
                $lang_array[] = strtolower(substr($value, 16));
                continue;
            }

            $lang_array[] = $translated;
        }

        return $lang_array;
    }
}