class.ilObjLanguageExt.php

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<?php

declare(strict_types=1);

class ilObjLanguageExt extends ilObjLanguage
{
    public function getGlobalLanguageFile(): object
    {
        require_once "./Services/Language/classes/class.ilLanguageFile.php";
        return ilLanguageFile::_getGlobalLanguageFile($this->key);
    }

    public function setLocal(bool $a_local = true): void
    {
        if ($this->isInstalled()) {
            if ($a_local) {
                $this->setDescription("installed_local");
            } else {
                $this->setDescription("installed");
            }
            $this->update();
        }
    }


    public function getLongDescription(): string
    {
        return $this->lng->txt($this->desc);
    }


    public function getDataPath(): string
    {
        if (!is_dir(CLIENT_DATA_DIR . "/lang_data")) {
            ilFileUtils::makeDir(CLIENT_DATA_DIR . "/lang_data");
        }
        return CLIENT_DATA_DIR . "/lang_data";
    }

    public function getLangPath(): string
    {
        return $this->lang_path;
    }

    public function getCustLangPath(): string
    {
        return $this->cust_lang_path;
    }

    public function getAllRemarks(): array
    {
        return self::_getRemarks($this->key);
    }

    public function getAllValues(array $a_modules = array(), string $a_pattern = "", array $a_topics = array()): array
    {
        return self::_getValues($this->key, $a_modules, $a_topics, $a_pattern);
    }


    public function getChangedValues(array $a_modules = array(), string $a_pattern = "", array $a_topics = array()): array
    {
        return self::_getValues($this->key, $a_modules, $a_topics, $a_pattern, "changed");
    }


    public function getUnchangedValues(array $a_modules = array(), string $a_pattern = "", array $a_topics = array()): array
    {
        return self::_getValues($this->key, $a_modules, $a_topics, $a_pattern, "unchanged");
    }

    public function getAddedValues(array $a_modules = array(), string $a_pattern = '', array $a_topics = array()): array
    {
        $global_file_obj = $this->getGlobalLanguageFile();
        $global_values = $global_file_obj->getAllValues();
        $local_values = self::_getValues($this->key, $a_modules, $a_topics, $a_pattern);

        return array_diff_key($local_values, $global_values);
    }


    public function getCommentedValues(array $a_modules = array(), string $a_pattern = "", array $a_topics = array()): array
    {
        $global_file_obj = $this->getGlobalLanguageFile();
        $global_comments = $global_file_obj->getAllComments();
        $local_values = self::_getValues($this->key, $a_modules, $a_topics, $a_pattern);

        return array_intersect_key($local_values, $global_comments);
    }


    public function getMergedValues(): array
    {
        $global_file_obj = $this->getGlobalLanguageFile();
        $global_values = $global_file_obj->getAllValues();
        $local_values = self::_getValues($this->key);

        return array_merge($global_values, $local_values);
    }

    public function getMergedRemarks(): array
    {
        $global_file_obj = $this->getGlobalLanguageFile();
        $global_comments = $global_file_obj->getAllComments();

        // get remarks including empty remarks for local changes
        $local_remarks = self::_getRemarks($this->key, true);

        return array_merge($global_comments, $local_remarks);
    }

    public function importLanguageFile(string $a_file, string $a_mode_existing = "keepnew"): void
    {
        global $DIC;
        $ilDB = $DIC->database();
        $ilErr = $DIC["ilErr"];

        // read the new language file
        require_once "./Services/Language/classes/class.ilLanguageFile.php";
        $import_file_obj = new ilLanguageFile($a_file);
        if (!$import_file_obj->read()) {
            $ilErr->raiseError($import_file_obj->getErrorMessage(), $ilErr->MESSAGE);
        }

        switch ($a_mode_existing) {
            // keep all existing entries
            case "keepall":
                $to_keep = $this->getAllValues();
                break;

            // keep existing online changes
            case "keepnew":
                $to_keep = $this->getChangedValues();
                break;

            // replace all existing definitions
            case "replace":
                $to_keep = array();
                break;

           // delete all existing entries
            case "delete":
                ilObjLanguage::_deleteLangData($this->key, false);
                $ilDB->manipulate("DELETE FROM lng_modules WHERE lang_key = " .
                    $ilDB->quote($this->key, "text"));
                $to_keep = array();
                break;

            default:
                return;
        }

        // process the values of the import file
        $to_save = array();
        foreach ($import_file_obj->getAllValues() as $key => $value) {
            if (!isset($to_keep[$key])) {
                $to_save[$key] = $value;
            }
        }
        self::_saveValues($this->key, $to_save, $import_file_obj->getAllComments());
    }

    public static function _getModules(string $a_lang_key): array
    {
        global $DIC;
        $ilDB = $DIC->database();

        $q = "SELECT DISTINCT module FROM lng_data WHERE " .
            " lang_key = " . $ilDB->quote($a_lang_key, "text") . " order by module";
        $set = $ilDB->query($q);

        $modules = array();
        while ($rec = $set->fetchRow(ilDBConstants::FETCHMODE_ASSOC)) {
            $modules[] = $rec["module"];
        }
        return $modules;
    }


    public static function _getRemarks(string $a_lang_key, bool $a_all_changed = false): array
    {
        global $DIC;
        $ilDB = $DIC->database();
        $lng = $DIC->language();

        $q = "SELECT module, identifier, remarks"
        . " FROM lng_data"
        . " WHERE lang_key = " . $ilDB->quote($a_lang_key, "text");

        if ($a_all_changed) {
            $q .= " AND (remarks IS NOT NULL OR local_change IS NOT NULL)";
        } else {
            $q .= " AND remarks IS NOT NULL";
        }

        $result = $ilDB->query($q);

        $remarks = array();
        while ($row = $ilDB->fetchAssoc($result)) {
            $remarks[$row["module"] . $lng->separator . $row["identifier"]] = $row["remarks"];
        }
        return $remarks;
    }


    public static function _getValues(
        string $a_lang_key,
        array $a_modules = array(),
        array $a_topics = array(),
        string $a_pattern = '',
        string $a_state = ''
    ): array {
        global $DIC;
        $ilDB = $DIC->database();
        $lng = $DIC->language();

        $q = "SELECT * FROM lng_data WHERE" .
            " lang_key = " . $ilDB->quote($a_lang_key, "text") . " ";

        if (is_array($a_modules) && count($a_modules) > 0) {
            $q .= " AND " . $ilDB->in("module", $a_modules, false, "text");
        }
        if (is_array($a_topics) && count($a_topics) > 0) {
            $q .= " AND " . $ilDB->in("identifier", $a_topics, false, "text");
        }
        if ($a_pattern) {
            $q .= " AND " . $ilDB->like("value", "text", "%" . $a_pattern . "%");
        }
        if ($a_state === "changed") {
            $q .= " AND NOT local_change IS NULL ";
        }
        if ($a_state === "unchanged") {
            $q .= " AND local_change IS NULL ";
        }
        $q .= " ORDER BY module, identifier";

        $set = $ilDB->query($q);

        $values = array();
        while ($rec = $set->fetchRow(ilDBConstants::FETCHMODE_ASSOC)) {
            $values[$rec["module"] . $lng->separator . $rec["identifier"]] = $rec["value"];
        }
        return $values;
    }

    public static function _saveValues(string $a_lang_key, array $a_values = array(), array $a_remarks = array()): void
    {
        global $DIC;
        $ilDB = $DIC->database();
        $lng = $DIC->language();

        if (!is_array($a_values)) {
            return;
        }
        $save_array = [];
        $save_date = (new DateTime())->format("Y-m-d H:i:s");

        // read and get the global values
        $global_file_obj = ilLanguageFile::_getGlobalLanguageFile($a_lang_key);
        $file_values = $global_file_obj->getAllValues();
        $file_comments = $global_file_obj->getAllComments();
        $db_values = self::_getValues($a_lang_key);
        $db_comments = self::_getRemarks($a_lang_key);
        $global_values = array_merge($db_values, $file_values);
        $global_comments = array_merge($db_comments, $file_comments);
        
        // save the single translations in lng_data
        foreach ($a_values as $key => $value) {
            $keys = explode($lng->separator, $key);
            
            if (count($keys) !== 2) {
                continue;
            }
            
            list($module, $topic) = $keys;
            $save_array[$module][$topic] = $value;

            $are_comments_set = array_key_exists($key, $global_comments) && array_key_exists($key, $a_remarks);
            $are_changes_made = (isset($global_values[$key]) ? $global_values[$key] != $value : true) || (isset($db_values[$key]) ? $db_values[$key] != $value : true);
            if ($are_changes_made || ($are_comments_set ? $global_comments[$key] != $a_remarks[$key] : $are_comments_set)) {
                $local_change = (isset($db_values[$key]) ? $db_values[$key] == $value : true) || (isset($global_values[$key]) ? $global_values[$key] != $value : true) ? $save_date : null;
                ilObjLanguage::replaceLangEntry(
                    $module,
                    $topic,
                    $a_lang_key,
                    $value,
                    $local_change,
                    $a_remarks[$key] ?? null
                );
            }
        }

        // save the serialized module entries in lng_modules
        foreach ($save_array as $module => $entries) {
            $set = $ilDB->query(sprintf(
                "SELECT * FROM lng_modules " .
                "WHERE lang_key = %s AND module = %s",
                $ilDB->quote($a_lang_key, "text"),
                $ilDB->quote($module, "text")
            ));
            $row = $ilDB->fetchAssoc($set);

            $arr = isset($row["lang_array"]) ? unserialize($row["lang_array"], ["allowed_classes" => false]) : "";
            if (is_array($arr)) {
                $entries = array_merge($arr, $entries);
            }
            ilObjLanguage::replaceLangModule($a_lang_key, $module, $entries);
        }

        require_once("class.ilCachedLanguage.php");
        ilCachedLanguage::getInstance($a_lang_key)->flush();
    }

    public static function _deleteValues(string $a_lang_key, array $a_values = array()): void
    {
        global $DIC;
        $ilDB = $DIC->database();
        $lng = $DIC->language();

        if (!is_array($a_values)) {
            return;
        }
        $delete_array = array();

        // save the single translations in lng_data
        foreach ($a_values as $key => $value) {
            $keys = explode($lng->separator, $key);
            if (count($keys) === 2) {
                $module = $keys[0];
                $topic = $keys[1];
                $delete_array[$module][$topic] = $value;

                ilObjLanguage::deleteLangEntry($module, $topic, $a_lang_key);
            }
        }

        // save the serialized module entries in lng_modules
        foreach ($delete_array as $module => $entries) {
            $set = $ilDB->query(sprintf(
                "SELECT * FROM lng_modules " .
                "WHERE lang_key = %s AND module = %s",
                $ilDB->quote($a_lang_key, "text"),
                $ilDB->quote($module, "text")
            ));
            $row = $ilDB->fetchAssoc($set);

            $arr = unserialize($row["lang_array"], ["allowed_classes" => false]);
            if (is_array($arr)) {
                $entries = array_diff_key($arr, $entries);
            }
            ilObjLanguage::replaceLangModule($a_lang_key, $module, $entries);
        }
    }
} // END class.ilObjLanguageExt