<?php
	/**
	 * AVE.cms
	 *
	 * @package AVE.cms
	 * @version 3.x
	 * @filesource
	 * @copyright © 2007-2014 AVE.cms, http://www.ave-cms.ru
	 *
	 * @license GPL v.2
	 */


	/**
	 * Функция дописывает в JPG файлы IPTC Tag
	 *
	 * @param string $rec
	 * @param string $data
	 * @param string $value
	 * @return string
	 */

	if (! function_exists('iptc_make_tag'))
	{
		function iptc_make_tag($rec, $data, $value)
		{
			$length = strlen($value);
			$retval = chr(0x1C) . chr($rec) . chr($data);

			if ($length < 0x8000)
			{
				$retval .= chr($length >> 8) .  chr($length & 0xFF);
			}
			else
			{
				$retval .= chr(0x80) .
					chr(0x04) .
					chr(($length >> 24) & 0xFF) .
					chr(($length >> 16) & 0xFF) .
					chr(($length >> 8) & 0xFF) .
					chr($length & 0xFF);
			}

			return $retval . $value;
		}
	}


	/**
	 * Функция накладывает watermark на заданный файл
	 *
	 * @param string $file URL Файла
	 * @param string $position Позиция
	 * @param int $transparency Прозарчность
	 * @return string link
	 */
	function watermarks($file, $position='center', $transparency=100)
	{
		global $AVE_DB;

		if (! defined('WATERMARKS_DIR') || ! defined('WATERMARKS_FILE'))
			return $file;

		$save = true;

		$margin = 10;

		$file_info = pathinfo($file);

		$watermarkFile = BASE_DIR . '/' . WATERMARKS_FILE;
		$watermarkDir  = BASE_DIR . '/' . WATERMARKS_DIR;

		$imagePath = BASE_DIR . '/' . trim($file_info['dirname'], '/');
		$imageName = $file_info['basename'];

		$copyPath = $watermarkDir . '/' . trim($file_info['dirname'], '/');
		$copyName = $imageName;

		if (! file_exists($watermarkDir . $file))
			return $file;

		if (! is_dir($watermarkDir))
		{
			@mkdir($watermarkDir, 0777, true);
			write_htaccess_deny($watermarkDir);
		}

		if (file_exists("$copyPath/$copyName") || !file_exists("$imagePath/$imageName"))
			$save = false;

		if (file_exists($watermarkFile) && file_exists("$imagePath/$imageName"))
		{
			$size_image =  getimagesize("$imagePath/$imageName");
			$size_wtmrk =  getimagesize($watermarkFile);

			list($xImage, $yImage) = $size_image;
			list($xWtmrk, $yWtmrk) = $size_wtmrk;

			if ($xImage < $xWtmrk || $yImage < $yWtmrk)
				$save = false;
			else
				$save = true;
		}

		if (file_exists("$copyPath/$copyName"))
			$save = false;

		if ($save)
		{
			if (! is_dir($copyPath) && !@mkdir($copyPath, 0777, true))
				return $file;

			require_once BASE_DIR.'/class/class.thumbnail.php';

			$watermark = new Image_Toolbox("$imagePath/$imageName");

			if (rename("$imagePath/$imageName", "$copyPath/$copyName"))
			{
				$old = umask(0);
				chmod("$copyPath/$copyName", 0777);
				umask($old);
			}

			switch ($position)
			{
				case 'top':
				case 'topcenter':
					$xLogoPosition = 'center -';
					$yLogoPosition = 'top +'.$margin;
					break;

				case 'topleft':
					$xLogoPosition = 'left +'.$margin;
					$yLogoPosition = 'top +'.$margin;
					break;

				case 'topright':
					$xLogoPosition = 'right -'.$margin;
					$yLogoPosition = 'top +'.$margin;
					break;

				case 'center':
					$xLogoPosition = 'center -';
					$yLogoPosition = 'center -';
					break;

				case 'centerleft':
					$xLogoPosition = 'left +'.$margin;
					$yLogoPosition = 'center -';
					break;

				case 'centerright':
					$xLogoPosition = 'right -'.$margin;
					$yLogoPosition = 'center -';
					break;

				case 'bottom':
				case 'bottomcenter':
					$xLogoPosition = 'center -';
					$yLogoPosition = 'bottom -'.$margin;
					break;

				case 'bottomleft':
					$xLogoPosition = 'left +'.$margin;
					$yLogoPosition = 'bottom -'.$margin;
					break;

				case 'bottomright':
					$xLogoPosition = 'right -'.$margin;
					$yLogoPosition = 'bottom -'.$margin;
					break;

				case 'repeat':
					$xLogoPosition = 'repeat ';
					$yLogoPosition = 'repeat ';
					break;

				default:
					$xLogoPosition = 'center -';
					$yLogoPosition = 'center -';
					break;
			}

			$watermark->addImage($watermarkFile);
			$watermark->blend($xLogoPosition, $yLogoPosition, IMAGE_TOOLBOX_BLEND_COPY, $transparency);
			$watermark->save("$imagePath/$imageName");

			if ($watermark->_img['main']['type'] == 2)
			{
				$image = getimagesize("$imagePath/$imageName", $info);

				if (! isset($info['APP13']))
				{
					$sitename = get_settings('site_name');

					// установка IPTC тэгов
					$iptc = array(
						'2#120' => iconv("UTF-8","WINDOWS-1251",$sitename),
						'2#116' => "http://".$_SERVER['SERVER_NAME']
					);

					// Преобразование IPTC тэгов в двоичный код
					$data = '';

					foreach ($iptc AS $tag => $string)
					{
						$tag = substr($tag, 2);
						$data .= iptc_make_tag(2, $tag, $string);
					}

					// Встраивание IPTC данных
					$content = iptcembed($data, "$imagePath/$imageName");

					// запись нового изображения в файл
					$fp = fopen("$imagePath/$imageName", "wb");
					fwrite($fp, $content);
					fclose($fp);
				}
			}

			unset($watermark);
		}

		return $file;
	}
?>