[feature request] Workaround relative links about wordpress-markdown-git HOT 5 OPEN

wget -O parsedown-1.7.4.tar.gz https://github.com/erusev/parsedown/archive/1.7.4.tar.gz
tar -zxvf parsedown-1.7.4.tar.gz

        // Block the content below.

        // $args = array(
        //     'body' => json_encode(array(
        //         "text" => $raw_markdown
        //     )),
        //     'headers' => array(
        //         'Content-Type' => 'application/json'
        //     )
        // );

        // // Add the Github credentials to have high /markdown rate limits
        // $GITHUB_USER = MARKDOWNGIT_CONFIG['Github']['user'];
        // $GITHUB_TOKEN = MARKDOWNGIT_CONFIG['Github']['token'];
        // if (!empty($GITHUB_USER) or !empty($GITHUB_TOKEN)) {
        //     $args['headers']['Authorization'] = 'Basic ' . base64_encode($GITHUB_USER . ':' . $GITHUB_TOKEN);
        // }

        // $response = wp_remote_post(self::$GITHUB_MARKDOWN_API, $args);
        // $html_body = wp_remote_retrieve_body($response);

        // $html_string = '<div class="markdown-body">' . $html_body . '</div>';

        // if ($this->is_static_cache() && $response_code == 200) {
            // $this->set_content_cache($url,'markdown', $html_string);
        // }

        $current_plugin_file_abs_url = WP_PLUGIN_URL."/".dirname(plugin_basename(__FILE__));
        $exploded_path = explode('//', $current_plugin_file_abs_url);
        $exploded_path_last = explode('/', $exploded_path[1]);
        $current_plugin_file_abs_path = ltrim($exploded_path[1], $exploded_path_last[0]);
        require_once($_SERVER['DOCUMENT_ROOT'].$current_plugin_file_abs_path."/../../php_tool/parsedown-1.7.4/Parsedown.php");
        $html_body = Parsedown::instance()->parse($raw_markdown);
        $html_string = '<div class="markdown-body">' . $html_body . '</div>';

    protected function parse_img_url(string $raw_url)
    {
        $url_parsed = parse_url($raw_url);
        $scheme = $url_parsed['scheme'];
        $domain = $url_parsed['host'];
        $port = $url_parsed['port'];
        $path = $url_parsed['path'];

        $exploded_path = explode('/-/', $path);
        $owner = ltrim($exploded_path[0], '/');
        $owner = urlencode($owner);

        $exploded_path_last = explode('/', $exploded_path[1]);
        $branch = $exploded_path_last[1];
        $file_path = implode('/', array_slice($exploded_path_last, 2));
        $file_path = urlencode($file_path);
        $target_url = "$scheme://$domain:$port/api/v4/projects/$owner/repository/files/$file_path/raw";
        return $target_url;
    }

    protected function edit_image_link(string $content, array $args) {
        $explode_path = end(explode('/', $this->path));
        $abs_path = "$this->scheme://$this->domain:$this->port".explode($explode_path, $this->path)[0];
        // $change_content = preg_replace('/(\!\[.+\]\()([\w\-\/\.]+)(\))/u', '$1'.$abs_path.'$2'.'$3', $content);
        $change_content = $content;
        $pattern = "/(\!\[.+\])\(([\w\-\/\.]+)\)/u";
        preg_match_all($pattern, $change_content, $arr);
        for($i = 0, $j = count($arr[0]); $i < $j; $i++) {
            $raw_url = $abs_path.$arr[2][$i];
            $target_url = $this->parse_img_url($raw_url);
            $wp_remote = wp_remote_get($target_url, $args);
            $response_body = wp_remote_retrieve_body($wp_remote);
            $response_code = wp_remote_retrieve_response_code($wp_remote);
            switch ($response_code) {
                case 200:
                    $encode = base64_encode($response_body);
                    $change_content = str_replace($arr[0][$i], $arr[1][$i]."(data:image/jpeg;base64,".$encode.")", $change_content);
                    break;
                case 404:
                    $raw_markdown = "  # 404 - Not found.\n";
                    $change_content = str_replace($arr[0][$i], $arr[0][$i].$raw_markdown, $change_content);
                    break;
                case 401:
                    $raw_markdown = "  # 401 - Bad credentials.\n";
                    $change_content = str_replace($arr[0][$i], $arr[0][$i].$raw_markdown, $change_content);
                    break;
                case 403:
                    $raw_markdown = "  # 403 - Bad credentials.\n";
                    $change_content = str_replace($arr[0][$i], $arr[0][$i].$raw_markdown, $change_content);
                    break;
                default:
                    $raw_markdown = "  # 500 - Server Error.\n";
                    $change_content = str_replace($arr[0][$i], $arr[0][$i].$raw_markdown, $change_content);
            }
        }

        return $change_content;
    }

    protected function get_document() {
        $args = array(
            'body' => array(
                'ref' => $this->branch
            )
        );
        if (!empty($this->token)) {
            $args['headers']['Authorization'] = $this->get_auth_header();
        }
        $get_url = "$this->scheme://$this->domain:$this->port/api/v4/projects/$this->owner/repository/files/$this->file_path/raw";

        $wp_remote = wp_remote_get($get_url, $args);
        $response_body = wp_remote_retrieve_body($wp_remote);
        $response_body = $this->edit_image_link($response_body, $args);
        $response_code = wp_remote_retrieve_response_code($wp_remote);

        return array($response_body, $response_code);
    }

    // Some modifications here are because my website is http://xxx: non-default port number
    protected function set_repo_details(string $url)
    {
        $url_parsed = parse_url($url);
        $scheme = $url_parsed['scheme'];
        $domain = $url_parsed['host'];
        $port = $url_parsed['port'];
        $path = $url_parsed['path'];

        $exploded_path = explode('/-/', $path);
        $owner = ltrim($exploded_path[0], '/');

        $exploded_path_last = explode('/', $exploded_path[1]);
        $branch = $exploded_path_last[1];
        $file_path = implode('/', array_slice($exploded_path_last, 2));

        $this->domain = $domain;
        $this->port = $port;
        $this->scheme = $scheme;
        $this->owner = urlencode($owner);
        $this->branch = $branch;
        $this->file_path = $file_path;
        $this->path = $path;
    }