<?php

/**
 * File from http://PrestaShow.pl
 *
 * DISCLAIMER
 * Do not edit or add to this file if you wish to upgrade this module to newer
 * versions in the future.
 *
 *  @authors     PrestaShow.pl <kontakt@prestashow.pl>
 *  @copyright   2015 PrestaShow.pl
 *  @license     http://PrestaShow.pl/license
 */
class PShow_Xml
{

    public static function getFileRowsToMatchData($file_path, $limit = 0)
    {
        $contents = '';
        $handle = fopen($file_path, "r");
        while (!feof($handle)) {
            $contents .= fgets($handle);

            if ($limit > 0 && Tools::strlen($contents) >= $limit) {
                break;
            }
        }
        fclose($handle);

        return $contents;
    }

    public static function formatXmlFile($file_path)
    {
        $domxml = new DOMDocument('1.0');
        $domxml->preserveWhiteSpace = false;
        $domxml->formatOutput = true;
        $xml = self::getXmlFile($file_path);

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

        $domxml->loadXML($xml->asXML());
        $domxml->save($file_path);
    }

    public static function getXmlFile($file_path)
    {
        return simplexml_load_file($file_path);
    }

    public static function removeCDATA($contents)
    {
        $contents = self::str_replace_with_split('<![CDATA[', "", $contents);

        $contents = self::str_replace_with_split(']]>', "", $contents);

        return $contents;
    }

    public static function htmlspecialchars($contents)
    {
        $contents = self::removeCDATA($contents);

        $contents = htmlspecialchars($contents);

        $contents = self::str_replace_with_split("&gt; &lt;", "&gt;&lt;", $contents);

        $contents = self::str_replace_with_split("&gt;  &lt;", "&gt;&lt;", $contents);

        $contents = self::str_replace_with_split("&gt;   &lt;", "&gt;&lt;", $contents);

        $contents = self::str_replace_with_split("&gt;&lt;", "&gt;<br>&lt;", $contents);

        return $contents;
    }

    /**
     * 	getRows()
     *
     * 	@param  string  path to the file
     * 	@param  char    csv delimiter
     * 	@param  int     count of rows to get
     * 	@return array   rows ffile
     */
    public static function getRows($file_path, $file_config, $start_from = 0, $rows_count = 3)
    {
        if (!file_exists($file_path)) {
            return false;
        }

        $parser = PShow_Xml_Parser::getInstance($file_path);
        $elements = $parser->getElementsByPath($file_config[1]['objectTag']);
        $results = array();

        if (($start_from + $rows_count) > count($elements))
            $rows_count = count($elements) - $start_from;

        for ($i = $start_from - 1; $i < $rows_count; ++$i) {
            $results[] = $elements[$i];
        }

        return $results;
    }

    /**
     * 
     * @param int $nextRow
     * @return array
     */
    public static function compareFileRowWithMatchedFields($nextRow)
    {
        $config = PShow_Config::getFileConfig(PShow_Import::getInstance()->filename);
        $object = PShow_Xml_Parser::getInstance()->getElementByPath($config['matched']['objectTag'], $nextRow - 1);
        $matches = array();

        /**
         * @param string $val
         * @param int $cutStart
         * @param int $cutEnd
         * @param string $append
         * @param string $prepend
         */
        $fieldMods = function (&$val, $cutStart, $cutEnd, $append, $prepend, $replacement) use ($config) {
            $val = substr($val, (int) $cutStart);
            $val = substr($val, 0, (strlen($val) - (int) $cutEnd));
            $val = $prepend . $val . $append;

            foreach ($replacement as $r) {
                if ($r['regex']) {
                    $val = preg_replace($r['find'], $r['replace'], $val);
                } else {
                    $val = str_replace($r['find'], $r['replace'], $val);
                }
            }

            if (array_key_exists('replacement', $config['additional'])) {
                foreach ($config['additional']['replacement'] as $r) {
                    if ($r['regex']) {
                        $val = preg_replace($r['find'], $r['replace'], $val);
                    } else {
                        $val = str_replace($r['find'], $r['replace'], $val);
                    }
                }
            }
        };

        foreach ($config['matched'] as $matchingType => $matchingData) {
            foreach ($matchingData as $field) {

                // if not matched with any prestashop field
                if ($field['value'] === 'none') {
                    continue;
                }

                switch ($matchingType) {
                    case 'matches':
                        $val = PShow_Xml_Parser::getInstance()->getValueByPathAndObject($field['key'], $object);

                        foreach ($val as &$v) {
                            $value = (string) $v;

                            if (ctype_space($value) || empty($value)) {
                                $value = (string) $v->asXML();

                                $tags = explode('/', $field['key']);
                                $lastTag = end($tags);

                                $value = str_replace(
                                    array('<' . $lastTag . '>', '<' . $lastTag . ' />', '</' . $lastTag . '>'), null, $value
                                );
                            }

                            $v = $value;
                        }
                        break;
                    case 'custommatches':
                        $val = array_map(function($x) {
                            return (string) $x;
                        }, $object->xpath('//' . $field['key']));
                        break;
                    case 'customvalues':
                        $val = $field['key'];
                        break;
                }

                if (!is_array($val)) {
                    $val = array($val);
                }

                if (array_key_exists('options', $field)) {
                    foreach ($val as &$v) {
                        $fieldMods($v, $field['options']['cutStart'], $field['options']['cutEnd'], $field['options']['append'], $field['options']['prepend'], $field['options']['replacement']);
                    }
                }

                list($fieldtype, $fieldname) = explode('.', $field['value']);

                if (isset($matches[$fieldtype][$fieldname])) {
                    $matches[$fieldtype][$fieldname] = array_merge($matches[$fieldtype][$fieldname], $val);
                } else {
                    $matches[$fieldtype][$fieldname] = $val;
                }
            }
        }

        return $matches;
    }

    /**
     * 
     * @param type $find
     * @param type $target
     * @param type $string
     * @return type
     */
    public static function str_replace_with_split($find, $target, $string)
    {
        $split = explode("\n", $string);
        $result = "";

        foreach ($split as $part) {
            $result .= str_replace($find, $target, $part);
        }

        return $result;
    }
}