<?php //$id:$
/**
 * Defines the OpenofficeDocument class, which is meant as a conversion
 * tool from Office presentations (.ppt, .sxi, .odp, .pptx) to
 * learning paths
 * @package dokeos.learnpath
 * @author  Eric Marguin <eric.marguin@dokeos.com>
 * @license GNU/GPL - See Dokeos license directory for details
 */
/**
 * Defines the "OpenofficePresentation" child of class "OpenofficeDocument"
 * @package dokeos.learnpath.OpenofficeDocument
 */
require_once('openoffice_document.class.php');
if (api_get_setting('search_enabled')=='true') {
	require_once(api_get_path(LIBRARY_PATH).'search/DokeosIndexer.class.php');
	require_once(api_get_path(LIBRARY_PATH).'search/IndexableChunk.class.php');
	require_once(api_get_path(LIBRARY_PATH) . 'specific_fields_manager.lib.php');
}

class OpenofficePresentation extends OpenofficeDocument {

	public $take_slide_name;

	function OpenofficePresentation($take_slide_name=false, $course_code=null, $resource_id=null,$user_id=null) {

		$this -> take_slide_name = $take_slide_name;
		parent::OpenofficeDocument($course_code, $resource_id, $user_id);

	}


    function make_lp($files=array()) {

    	global $_course;

		$previous = 0;
		$i = 0;

		if(!is_dir($this->base_work_dir.$this->created_dir))
			return false;


		foreach($files as $file){

			list($slide_name,$file_name,$slide_body) = explode('||',$file); // '||' is used as separator between fields: slide name (with accents) || file name (without accents) || all slide text (to be indexed)

			//filename is utf8 encoded, but when we decode, some chars are not translated (like quote &rsquo;).
			//so we remove these chars by translating it in htmlentities and the reconvert it in want charset
			$slide_name = api_htmlentities($slide_name,ENT_COMPAT,$this->original_charset);
			$slide_name = str_replace('&rsquo;','\'',$slide_name);
			$slide_name = api_convert_encoding($slide_name, api_get_setting('platform_charset'), $this->original_charset);
			$slide_name = api_html_entity_decode($slide_name, ENT_COMPAT, api_get_setting('platform_charset'));

			if($this->take_slide_name === true)
			{
				$slide_name = str_replace('_',' ',$slide_name);
				$slide_name = api_ucfirst($slide_name);
			}
			else
			{
				$slide_name = 'slide'.str_repeat('0',2-strlen($i)).$i;
			}

			$i++;
			// add the png to documents
			$document_id = add_document($_course,$this->created_dir.'/'.urlencode($file_name),'file',filesize($this->base_work_dir.$this->created_dir.'/'.$file_name),$slide_name);
			api_item_property_update($_course,TOOL_DOCUMENT,$document_id,'DocumentAdded',api_get_user_id(),0,0,null,null,api_get_session_id());


            // Generating the thumbnail
            $image = $this->base_work_dir.$this->created_dir .'/'. $file_name;

            $pattern = '/(\w+)\.png$/';
            $replacement = '${1}_thumb.png';
            $thumb_name = preg_replace($pattern, $replacement, $file_name);
            // calculate thumbnail size
            list($width, $height) = getimagesize($image);
            $thumb_width = 300;
            $thumb_height = floor( $height * ($thumb_width / $width ) );
            // load
            $thumb = imagecreatetruecolor($thumb_width, $thumb_height);
            $source = imagecreatefrompng($image);
            // resize
            imagecopyresized($thumb, $source, 0, 0, 0, 0, $thumb_width, $thumb_height, $width, $height);
            // output
            imagepng($thumb, $this->base_work_dir.$this->created_dir .'/'. $thumb_name);
            /*
            // new resizing method usign imagemagick
            $im = new Imagick( $image );
            $im->thumbnailImage($thumb_width, $thumb_height);
            //file_put_contents($this->base_work_dir.$this->created_dir .'/'. $thumb_name,$im);
            $im->writeImage($this->base_work_dir.$this->created_dir .'/'. $thumb_name);
             */

            // adding the thumbnail to documents
            $document_id_thumb = add_document($_course, $this->created_dir.'/'.urlencode($thumb_name), 'file', filesize($this->base_work_dir.$this->created_dir.'/'.$thumb_name), $slide_name);
            api_item_property_update($_course, TOOL_THUMBNAIL, $document_id_thumb,'DocumentAdded',api_get_user_id(),0,0);

			// create an html file
			$html_file = $file_name.'.html';
			$fp = fopen($this->base_work_dir.$this->created_dir.'/'.$html_file, 'w+');

			$slide_src = api_get_path(REL_COURSE_PATH).$_course['path'].'/document/'.$this->created_dir.'/'.utf8_encode($file_name);
			$slide_src = str_replace('//', '/', $slide_src);
			fwrite($fp,
'<html>
	<head>
	</head>
	<body>
		<img src="'.$slide_src.'" />
	</body>
</html>');  // This indentation is to make the generated html files to look well.

			fclose($fp);
			$document_id = add_document($_course,$this->created_dir.'/'.urlencode($html_file),'file',filesize($this->base_work_dir.$this->created_dir.'/'.$html_file),$slide_name);
			if ($document_id){

				//put the document in item_property update
				api_item_property_update($_course,TOOL_DOCUMENT,$document_id,'DocumentAdded',api_get_user_id(),0,0,null,null,api_get_session_id());

				$previous = learnpath::add_item(0, $previous, 'document', $document_id, $slide_name, '');
				if($this->first_item == 0){
					$this->first_item = $previous;
				}
			}
            // code for text indexing
            if (api_get_setting('search_enabled')=='true') {

	            if (isset($_POST['index_document']) && $_POST['index_document']) {
	              //Display::display_normal_message(print_r($_POST));
	              $di = new DokeosIndexer();
	              isset($_POST['language'])? $lang=Database::escape_string($_POST['language']): $lang = 'english';
	              $di->connectDb(NULL, NULL, $lang);
	              $ic_slide = new IndexableChunk();
	              $ic_slide->addValue("title", $slide_name);
	              $specific_fields = get_specific_field_list();
	              $all_specific_terms = '';
	              foreach ($specific_fields as $specific_field) {
	              	if (isset($_REQUEST[$specific_field['code']])) {
	              		$sterms = trim($_REQUEST[$specific_field['code']]);
	              		$all_specific_terms .= ' '. $sterms;
	              		if (!empty($sterms)) {
	              			$sterms = explode(',', $sterms);
	              			foreach ($sterms as $sterm) {
	              				$ic_slide->addTerm(trim($sterm), $specific_field['code']);
	              			}
	              		}
	              	}
	              }
	              $slide_body = $all_specific_terms .' '. $slide_body;
	              $ic_slide->addValue("content", $slide_body);
	              /* FIXME:  cidReq:lp_id:doc_id al indexar  */
	              //       add a comment to say terms separated by commas
	              $courseid=api_get_course_id();
	              $ic_slide->addCourseId($courseid);
	              $ic_slide->addToolId(TOOL_LEARNPATH);
	              $lp_id = $this->lp_id;
	              $xapian_data = array(
	              	SE_COURSE_ID => $courseid,
	              	SE_TOOL_ID => TOOL_LEARNPATH,
	              	SE_DATA => array('lp_id' => $lp_id, 'lp_item'=> $previous, 'document_id' => $document_id),
	              	SE_USER => (int)api_get_user_id(),
	              );
	              $ic_slide->xapian_data = serialize($xapian_data);
	              $di->addChunk($ic_slide);
	              //index and return search engine document id
	              $did = $di->index();
	              if ($did) {
	                // save it to db
	                $tbl_se_ref = Database::get_main_table(TABLE_MAIN_SEARCH_ENGINE_REF);
	                $sql = 'INSERT INTO %s (id, course_code, tool_id, ref_id_high_level, ref_id_second_level, search_did)
	                        VALUES (NULL , \'%s\', \'%s\', %s, %s, %s)';
	                $sql = sprintf($sql, $tbl_se_ref, api_get_course_id(), TOOL_LEARNPATH, $lp_id, $previous, $did);
	                Database::query($sql,__FILE__,__LINE__);
	              }
	            }
            }
		}
    }

    function add_command_parameters(){

    	if(empty($this->slide_width) || empty($this->slide_height))
    		list($this->slide_width, $this->slide_height) = explode('x',api_get_setting('service_ppt2lp','size'));
    	return ' -w '.$this->slide_width.' -h '.$this->slide_height.' -d oogie "'.$this->base_work_dir.'/'.$this->file_path.'"  "'.$this->base_work_dir.$this->created_dir.'.html"';

    }

    function set_slide_size($width,$height)
    {
    	$this->slide_width = $width;
    	$this->slide_height = $height;
    }

    function add_docs_to_visio ($files=array()){

    	global $_course;
    	/* Add Files */


		foreach($files as $file){

			list($slide_name,$file_name) = explode('||',$file); // '||' is used as separator between slide name (with accents) and file name (without accents)
			$slide_name = api_htmlentities($slide_name,ENT_COMPAT,$this->original_charset);
			$slide_name = str_replace('&rsquo;','\'',$slide_name);
			$slide_name = api_convert_encoding($slide_name, api_get_setting('platform_charset'), $this->original_charset);
			$slide_name = api_html_entity_decode($slide_name,ENT_COMPAT,api_get_setting('platform_charset'));

			$did = add_document($_course, $this->created_dir.'/'.urlencode($file_name), 'file', filesize($this->base_work_dir.$this->created_dir.'/'.$file_name), $slide_name);
			if ($did)
				api_item_property_update($_course, TOOL_DOCUMENT, $did, 'DocumentAdded', $_SESSION['_uid'], 0, null,null,null,api_get_session_id());

		}

    }


}
?>