<?php
class ClassTranslation extends ClassConfig implements InterfaceTranslation {
  public function __construct(){}
  public function __destruct(){}
    
  public function getTranslationV2($message_code, $lang_code, $set_data = array(), $db_table="core_translation"){
    $this->_code = $message_code;
    $this->_lang = $lang_code;
    $this->_setData = $set_data;
    $this->_dbTable = $db_table;
    $oPDOLink = ClassConfig::databaseConnect();
    
    if(!isset($_SESSION['translations'][$this->_code]) or $_SESSION['translations'][$this->_code]['source']==''){
        $row = $this->getTranslationInDatabase($this->_code, $this->_lang);
        $_SESSION['translations'][$this->_code][$this->_lang] = $row[$this->_lang];
        $_SESSION['translations'][$this->_code]['source'] = $row['source'];
    }
    
    if($_SESSION['translations'][$this->_code][$this->_lang] != ''){
        $translation = $_SESSION['translations'][$this->_code][$this->_lang];
    } else {
        $translation = $_SESSION['translations'][$this->_code]['source'];
    }
    $replacement_regex = '/\[data\]/';
    foreach($this->_setData as $k=>$v){
        $translation = preg_replace($replacement_regex, $this->_setData[$k], $translation, 1);
    }
    return $translation;
  }
  
    // used in files /index.php & /themes/beestrap/index.php
    public function listTranslations($lang_code='source'){
        $this->_langCode = $lang_code;
        $oPDOLink = ClassConfig::databaseConnect();
        $res = array();
        $sql = "
        SELECT id, code, source, ".$this->_langCode."
        FROM core_translation;
        ";
        $execSQL = $oPDOLink->prepare($sql);
        $execSQL->execute(array());
        $rows = $execSQL->fetchAll(PDO::FETCH_ASSOC);
        foreach($rows as $k=>$v){
            $res[$rows[$k]['code']] = array('source'=>$rows[$k]['source'], $this->_langCode=>$rows[$k][$this->_langCode]);
        }
        return $res;
    }
    
    public function getMessage($message_code, $lang_code, $set_data){
        $this->_messageCode = $message_code;
        $this->_langCode = $lang_code;
        $this->_setData = $set_data;
        $oTrans = new ClassTranslation();
        
        $message = $oTrans->getTranslation($this->_messageCode, $this->_langCode);
        $replacement_regex = '/\[data\]/';
        
        foreach($this->_setData as $k=>$v){
            $message = preg_replace($replacement_regex, $this->_setData[$k], $message, 1);
        }
        
        return $message;
    }

    public function getTranslationWithData($code, $lang, $set_data){
        $this->_code = $code;
        $this->_lang = $lang;
        $this->_setData = $set_data;
        
        if(!isset($_SESSION['translations'][$this->_code]) or $_SESSION['translations'][$this->_code]['source']==''){
            $row = $this->getTranslationInDatabase($this->_code, $this->_lang);
            $_SESSION['translations'][$this->_code][$this->_lang] = $row[$this->_lang];
            $_SESSION['translations'][$this->_code]['source'] = $row['source'];
        }
        
        if($_SESSION['translations'][$this->_code][$this->_lang] != ''){
            $translation = $_SESSION['translations'][$this->_code][$this->_lang];
        } else {
            $translation = $_SESSION['translations'][$this->_code]['source'];
        }
        $replacement_regex = '/\[data\]/';
        foreach($this->_setData as $k=>$v){
            $translation = preg_replace($replacement_regex, $this->_setData[$k], $translation, 1);
        }
        return $translation;
    }
    
    public function getTranslationInDatabase($code, $lang, $db_table="core_translation"){
        $this->_code = $code;
        $this->_lang = $lang;
        $this->_dbTable = $db_table;
        $oPDOLink = ClassConfig::databaseConnect();
        
        $sql="
        SELECT source, ".$this->_lang."
        FROM ".$this->_dbTable."
        WHERE code=:code
        LIMIT 1
        ";
        $execSQL = $oPDOLink->prepare($sql);
        $execSQL->execute(array(':code'=>$this->_code));
        $row = $execSQL->fetch(PDO::FETCH_ASSOC);
        return $row;
    }
    

    public function getTranslation($code, $lang = null, $set_data = array()){
        $this->_code = $code;
        $this->_lang = $lang ?? $_SESSION['config']['default_lang_code'];
        $this->_setData = $set_data;

        //if translation not in SESSION, then go get it from DB
        if(!isset($_SESSION['translations'][$this->_code]) or $_SESSION['translations'][$this->_code]['source']==''){
            $row = $this->getTranslationInDatabase($this->_code, $this->_lang);
            $_SESSION['translations'][$this->_code][$this->_lang] = $row[$this->_lang];
            $_SESSION['translations'][$this->_code]['source'] = $row['source'];
        }

        //if translation in current language, display it. Else, display source
        if($_SESSION['translations'][$this->_code][$this->_lang] != ''){
            $translation = $_SESSION['translations'][$this->_code][$this->_lang];
        } else {
            $translation = $_SESSION['translations'][$this->_code]['source'];
        }

        //if [data] in content, get values set in array $set_data
        $replacement_regex = '/\[data\]/';
        foreach($this->_setData as $k=>$v){
            $translation = preg_replace($replacement_regex, $this->_setData[$k], $translation, 1);
        }
        return $translation;
    }

  //public function getTranslation($code, $lang){
  //  $this->_code = $code;
  //  $this->_lang = $lang;
  //  
  //  if(!isset($_SESSION['translations'][$this->_code]) or $_SESSION['translations'][$this->_code]['source']==''){
  //    $row = $this->getTranslationInDatabase($this->_code, $this->_lang);
  //    $_SESSION['translations'][$this->_code][$this->_lang] = $row[$this->_lang];
  //    $_SESSION['translations'][$this->_code]['source'] = $row['source'];
  //  }
  //  
  //  if($_SESSION['translations'][$this->_code][$this->_lang] != ''){
  //    return $_SESSION['translations'][$this->_code][$this->_lang];
  //  } else {
  //    return $_SESSION['translations'][$this->_code]['source'];
  //  }
  //}
    
    public function getTranslationById($id, $lang){
        //TODO get translation from APC cache
        $this->_id = $id;
        $this->_lang = $lang;
        $oPDOLink = ClassConfig::databaseConnect();
        
        $sql="
        SELECT source, ".$this->_lang."
        FROM core_translation
        WHERE id=:id
        LIMIT 1
        ";
        $execSQL = $oPDOLink->prepare($sql);
        $execSQL->execute(array(':id'=>$this->_id));
        $row = $execSQL->fetch(PDO::FETCH_ASSOC);
        if($row[$this->_lang] != ''){
            return $row[$this->_lang];
        } else {
            return $row['source'];
        }
    }
    
    public function getTranslationForEditing($translation_id, $lang){
        $this->_translationId = $translation_id;
        $this->_lang = $lang;
        $oPDOLink = ClassConfig::databaseConnect();
        
        $sql="
        SELECT code, source, ".$this->_lang."
        FROM core_translation
        WHERE id=:translation_id
        LIMIT 1;
        ";
        $execSQL = $oPDOLink->prepare($sql);
        $execSQL->execute(array(':translation_id'=>$this->_translationId));
        $row = $execSQL->fetch(PDO::FETCH_ASSOC);
        return $row;
    }

    public function translate($translation_id, $lang_code, $data){
        $this->_translationId = $translation_id;
        $this->_langCode = $lang_code;
        $this->_data = $data;
        $oPDOLink = ClassConfig::databaseConnect();
        
        $sql="
        UPDATE core_translation
        SET source=:source, ".$this->_langCode."=:translation_text
        WHERE id=:translation_id;
        ";
        $execSQL = $oPDOLink->prepare($sql);
        if($execSQL->execute(array(
            ':source'=>$this->_data['source'],
            ':translation_text'=>$this->_data['translation'],
            ':translation_id'=>$this->_translationId
        ))){
            $message['state'] = 'success';
        } else{
            $message['state'] = 'failed';
        }
        return $message;
    }
    
    
    public function listAllTranslations($lang_code){
        $this->_langCode = $lang_code;
        $oPDOLink = ClassConfig::databaseConnect();
        $sql = "
        SELECT id, code, source, ".$this->_langCode."
        FROM core_translation;
        ";
        $execSQL = $oPDOLink->prepare($sql);
        $execSQL->execute(array());
        $rows = $execSQL->fetchAll(PDO::FETCH_ASSOC);
        return $rows;
    }
    
}