<?php

class stLanguageEditor
{
    protected $culture = null;
    /**
     * Instacja wersji językowych
     *
     * @var Language
     */
    protected $language = null;
    protected $backendCulture = null;
    protected $catalogues = array();
    protected $cacheCatalogues = array();
    protected $phrases = array();

    protected $phrasesCount = 0;

    protected static $instance = array();

    public static function getInstance(Language $language, $ignoreBackendCulture = false)
    {
        $hash = $language->getId().' _ '.$ignoreBackendCulture;

        if (!isset(self::$instance[$hash]))
            self::$instance[$hash] = new stLanguageEditor($language, $ignoreBackendCulture);

        return self::$instance[$hash];
    }

    public function __construct(Language $language, $ignoreBackendCulture = false)
    {
        $this->culture = $language->getShortcut();
        $this->language = $language;

        if (!$ignoreBackendCulture)
            $this->backendCulture = sfContext::getInstance()->getUser()->getCulture();
        else
            $this->backendCulture = null;

        $this->buildDictionary(true, 'en');

        if ($this->culture != 'en')
        {
            $this->buildDictionary();
        }
    }

    /**
     * Zwraca instacje wersji językowej
     *
     * @return Language
     */
    public function getLanguage()
    {
        return $this->language;
    }

    public function getPhrasesCount()
    {
        return $this->phrasesCount;
    }

    protected function buildDictionary($baseBuild = false, $culture = null)
    {
        $this->phrasesCount = 0;

        if (null === $culture)
        {
            $culture = $this->language->getLanguage();
        }

        foreach ($this->language->getTranslationFiles(false, $culture) as $file)
        {
            $fileName = pathinfo($file, PATHINFO_BASENAME);
            $catalogue = substr($fileName, 0, strpos($fileName, '.'));

            if (preg_match('/^(st|sm|app)[A-Za-z]*\.' . $culture . '\.xml$/', $fileName))
            {
                $this->catalogues[$catalogue] = $catalogue;

                $xml = simplexml_load_file($file);

                foreach ($xml->file->body->{"trans-unit"} as $item)
                {
                    $index = md5($item->source);

                    if (!isset($this->phrases[$catalogue][$index]['phrase']))
                    {
                        $this->phrasesCount++;
                    }

                    $this->phrases[$catalogue][$index]['phrase'] = (string)$item->source;
                    $this->phrases[$catalogue][$index]['shop'] = (string)$item->target;

                    if ($this->backendCulture == 'en_US' && isset($this->phrases[$catalogue][$index]['shop']))
                    {
                        $this->phrases[$catalogue][$index]['backend_phrase'] = $this->phrases[$catalogue][$index]['shop'];
                    }
                    else
                    {
                        $this->phrases[$catalogue][$index]['backend_phrase'] = $this->phrases[$catalogue][$index]['phrase'];
                    }

                    if ($this->culture == 'pl')
                    {
                        $this->phrases[$catalogue][$index]['shop'] = (string)$item->source;
                    }
                }
            }
            elseif (preg_match('/^(st|sm|app)[A-Za-z]*\.user\.' . $culture . '\.xml$/', $fileName))
            {
                $xml = simplexml_load_file($file);

                foreach ($xml->file->body->{"trans-unit"} as $item)
                {
                    $index = md5($item->source);

                    if (isset($this->phrases[$catalogue][$index]) && !($this->culture == 'pl' && $culture == 'en'))
                        if ($baseBuild && $this->culture != 'en')
                            $this->phrases[$catalogue][$index]['shop'] = (string)$item->target;
                        else
                            $this->phrases[$catalogue][$index]['user'] = (string)$item->target;
                }
            }
        }
    }

    public function getCatalogues($onlyWithCache = false)
    {
        if ($onlyWithCache === true)
            return $this->cacheCatalogues;
        return $this->catalogues;
    }

    /**
     * Zwraca tablicę fraz
     *
     * @param string $catalogue Opcjonalny katalog tłumaczeń
     * @return array
     */
    public function getPhrases($catalogue = null, $index = null)
    {
        if ($catalogue && $index)
        {
            return isset($this->phrases[$catalogue][$index]) ? array($catalogue => array($index => $this->phrases[$catalogue][$index])) : array();
        }

        if ($catalogue)
        {
            return isset($this->phrases[$catalogue]) ? array($catalogue => $this->phrases[$catalogue]) : array();
        }


        return $this->phrases;
    }

    public function search($phrase = null, $userPhraseTranslation = null,  $searchCatalogue = null)
    {
        $result = array();

        if ($phrase && mb_strlen($phrase) <= 2)
        {
            $phrase = '^' . $phrase . '$';
        }

        if ($userPhraseTranslation && mb_strlen($userPhraseTranslation) <= 2)
        {
            $userPhraseTranslation = '^' . $userPhraseTranslation . '$';
        }

        foreach ($this->phrases as $catalogue => $phrases)
        {
            if ($searchCatalogue !== null && $catalogue !== $searchCatalogue)
                continue;

            foreach ($phrases as $index => $phrases)
            {
                $translation = isset($phrases['user']) ? $phrases['user'] : $phrases['shop'];

                if ((!$phrase || preg_match('/' . $phrase . '/i', $phrases['phrase']) || preg_match('/' . $phrase . '/i', $phrases['backend_phrase'])) && (!$userPhraseTranslation || preg_match('/' . $userPhraseTranslation . '/i', $translation)))
                {
                    $result[$catalogue][$index] = $phrases;
                }
            }
        }

        return $result;
    }

    public function getPhraseByIndex($catalogue, $index)
    {
        if (isset($this->phrases[$catalogue][$index]))
            return $this->phrases[$catalogue][$index];
        return null;
    }

    public static function parseXliffFile($filePath)
    {
        $phrases = array();

        if (!file_exists($filePath))
            return $phrases;

        $xml = simplexml_load_file($filePath, null, LIBXML_NOCDATA);

        if (false === $xml)
        {
            return false;
        }

        foreach ($xml->file->body->{"trans-unit"} as $item)
        {
            $attributes = $item->attributes();

            list($catalogue,) = explode('_', $attributes['id'], 2);

            $index = md5((string)$item->source);

            $phrases[$catalogue][$index]['phrase'] = (string)$item->source;
            $phrases[$catalogue][$index]['user'] = (string)$item->target;
        }

        return $phrases;
    }
}