<?php
/* For licensing terms, see /chamilo_license.txt */

class CourseHome {
		
	/**
	 * Gets the html content to show in the 3 column view
	 */
	public static function show_tool_3column($cat) {	
		global $_user, $charset;	
		$TBL_ACCUEIL = Database :: get_course_table(TABLE_TOOL_LIST);
		$TABLE_TOOLS = Database :: get_main_table(TABLE_MAIN_COURSE_MODULE);
	
		$numcols = 3;
		$table = new HTML_Table('width="100%"');
		$toolsRow_all = array ();
		switch ($cat) {
			case 'Basic' :
				$sql = "SELECT a.*, t.image img, t.row, t.column  FROM $TBL_ACCUEIL a, $TABLE_TOOLS t
						WHERE a.link=t.link AND t.position='basic' ORDER BY t.row, t.column";
				break;
	
			case 'External' :
				if (api_is_allowed_to_edit()) {
					$sql = "SELECT a.*, t.image img FROM $TBL_ACCUEIL a, $TABLE_TOOLS t
							WHERE (a.link=t.link AND t.position='external')
							OR (a.visibility <= 1 AND (a.image = 'external.gif' OR a.image = 'scormbuilder.gif' OR t.image = 'blog.gif') AND a.image=t.image)
							ORDER BY a.id";
				} else {
					$sql = "SELECT a.*, t.image img FROM $TBL_ACCUEIL a, $TABLE_TOOLS t
							WHERE a.visibility = 1 AND ((a.link=t.link AND t.position='external')
							OR ((a.image = 'external.gif' OR a.image = 'scormbuilder.gif' OR t.image = 'blog.gif') AND a.image=t.image))
							ORDER BY a.id";
				}
				break;	
			case 'courseAdmin' :
				$sql = "SELECT a.*, t.image img, t.row, t.column  FROM $TBL_ACCUEIL a, $TABLE_TOOLS t
						WHERE admin=1 AND a.link=t.link ORDER BY t.row, t.column";
				break;
	
			case 'platformAdmin' :
				$sql = "SELECT *, image img FROM $TBL_ACCUEIL WHERE visibility = 2 ORDER BY id";
		}
		$result = Database::query($sql, __FILE__, __LINE__);
	
		// grabbing all the tools from $course_tool_table
		while ($tempRow = Database::fetch_array($result))
		{
			/*
			if ($tempRow['img'] !== "scormbuilder.gif" AND $tempRow['img'] !== "blog.gif")
			*/
			if ($tempRow['img'] != 'file_html.gif' && $tempRow['img'] != 'file_html_na.gif'
				&& $tempRow['img'] != 'scormbuilder.gif' && $tempRow['img'] != 'scormbuilder_na.gif'
				&& $tempRow['img'] != 'blog.gif' && $tempRow['img'] != 'blog_na.gif'
				&& $tempRow['img'] != 'external.gif' && $tempRow['img'] != 'external_na.gif')
			{
				$tempRow['name_translated'] = get_lang(ucfirst($tempRow['name']));
			}
			$toolsRow_all[] = $tempRow;
		}
		// grabbing all the links that have the property on_homepage set to 1
		if ($cat == "External")
		{
			$tbl_link = Database :: get_course_table(TABLE_LINK);
			$tbl_item_property = Database :: get_course_table(TABLE_ITEM_PROPERTY);
			if (api_is_allowed_to_edit(null,true))
			{
				$sql_links = "SELECT tl.*, tip.visibility
									FROM $tbl_link tl
									LEFT JOIN $tbl_item_property tip ON tip.tool='link' AND tip.ref=tl.id
									WHERE tl.on_homepage='1' AND tip.visibility != 2";
			}
			else
			{
				$sql_links = "SELECT tl.*, tip.visibility
									FROM $tbl_link tl
									LEFT JOIN $tbl_item_property tip ON tip.tool='link' AND tip.ref=tl.id
									WHERE tl.on_homepage='1' AND tip.visibility = 1";
			}
			$result_links = Database::query($sql_links);
			while ($links_row = Database::fetch_array($result_links))
			{
				$properties = array ();
				$properties['name'] = $links_row['title'];
				$properties['link'] = $links_row['url'];
				$properties['visibility'] = $links_row['visibility'];
				$properties['img'] = 'external.gif';
				$properties['adminlink'] = api_get_path(WEB_CODE_PATH).'link/link.php?action=editlink&amp;id='.$links_row['id'];
				$toolsRow_all[] = $properties;
			}
		}
	
		$cell_number = 0;
		// draw line between basic and external, only if there are entries in External
		if ($cat == "External" && count($toolsRow_all))
		{
			$table->setCellContents(0, 0, '<hr noshade="noshade" size="1"/>');
			$table->updateCellAttributes(0, 0, 'colspan="3"');
			$cell_number += $numcols;
		}
	
		foreach ($toolsRow_all as $toolsRow)
		{
			if (api_get_session_id()!=0 && in_array($toolsRow['name'],array('course_maintenance','course_setting'))) {
					continue;
			}
	
			$cell_content = '';
			// the name of the tool
			$tool_name = ($toolsRow['name_translated'] != "" ? $toolsRow['name_translated'] : htmlspecialchars($toolsRow['name'],ENT_QUOTES,$charset)); // RH: added htmlspecialchars
	
			$link_annex = '';
			// the url of the tool
			if ($toolsRow['img'] != "external.gif")
			{
				$toolsRow['link'] = api_get_path(WEB_CODE_PATH).$toolsRow['link'];
				$qm_or_amp = ((strpos($toolsRow['link'], '?') === FALSE) ? '?' : '&amp;');
				$link_annex = $qm_or_amp.api_get_cidreq();
			}
			else // if an external link ends with 'login=', add the actual login...
				{
				$pos = strpos($toolsRow['link'], "?login=");
				$pos2 = strpos($toolsRow['link'], "&amp;login=");
				if ($pos !== false or $pos2 !== false)
				{
					$link_annex = $_user['username'];
				}
			}
	
			// setting the actual image url
			$toolsRow['img'] = api_get_path(WEB_IMG_PATH).$toolsRow['img'];
	
			// VISIBLE
			if ($toolsRow['visibility'] or $cat == 'courseAdmin' or $cat == 'platformAdmin')
			{
				if(strpos($toolsRow['name'],'visio_')!==false)
				{
					$cell_content .= '<a  href="javascript: void(0);" onclick="window.open(\'' . $toolsRow['link'].$link_annex . '\',\'window_visio'.$_SESSION['_cid'].'\',config=\'height=\'+730+\', width=\'+1020+\', left=2, top=2, toolbar=no, menubar=no, scrollbars=yes, resizable=yes, location=no, directories=no, status=no\')" target="' . $toolsRow['target'] . '"><img src="'.$toolsRow['img'].'" title="'.$tool_name.'" alt="'.$tool_name.'" align="absmiddle" border="0">'.$tool_name.'</a>';
				}
				else if(strpos($toolsRow['name'],'chat')!==false && api_get_course_setting('allow_open_chat_window')==true)
				{
					/*
					$cell_content .= '<a href="#" onclick="window.open(\'' .$toolsRow['link'].$link_annex. '\',\'window_chat'.$_SESSION['_cid'].'\',config=\'height=\'+380+\', width=\'+625+\', left=2, top=2, toolbar=no, menubar=no, scrollbars=yes, resizable=yes, location=no, directories=no, status=no\')" target="' . $toolsRow['target'] . '"><img src="'.$toolsRow['img'].'" alt="'.get_lang(ucfirst($toolsRow['name'])).' " align="absmiddle" border="0">'.$tool_name.'</a>'."\n"; // don't replace img with display::return_icon because $toolsRow['img'] = api_get_path(WEB_IMG_PATH).$toolsRow['img']
					*/
					$cell_content .= '<a href="javascript: void(0);" onclick="window.open(\'' .$toolsRow['link'].$link_annex. '\',\'window_chat'.$_SESSION['_cid'].'\',config=\'height=\'+380+\', width=\'+625+\', left=2, top=2, toolbar=no, menubar=no, scrollbars=yes, resizable=yes, location=no, directories=no, status=no\')" target="' . $toolsRow['target'] . '"><img src="'.$toolsRow['img'].'" title="'.$tool_name.'" alt="'.$tool_name.'" align="absmiddle" border="0">'.$tool_name.'</a>'."\n"; // don't replace img with display::return_icon because $toolsRow['img'] = api_get_path(WEB_IMG_PATH).$toolsRow['img']
				}
				else
				{
					/*
					$cell_content .= '<a href="'.$toolsRow['link'].$link_annex.'" target="'.$toolsRow['target'].'"><img src="'.$toolsRow['img'].'" alt="'.get_lang(ucfirst($toolsRow['name'])).' " align="absmiddle" border="0">'.$tool_name.'</a>'."\n"; // don't replace img with display::return_icon because $toolsRow['img'] = api_get_path(WEB_IMG_PATH).$toolsRow['img']
					*/
					$cell_content .= '<a href="'.$toolsRow['link'].$link_annex.'" target="'.$toolsRow['target'].'"><img src="'.$toolsRow['img'].'" title="'.$tool_name.'" alt="'.$tool_name.'" align="absmiddle" border="0">'.$tool_name.'</a>'."\n"; // don't replace img with display::return_icon because $toolsRow['img'] = api_get_path(WEB_IMG_PATH).$toolsRow['img']
				}
			}
			// INVISIBLE
			else
			{
				if (api_is_allowed_to_edit(null,true))
				{
					if(strpos($toolsRow['name'],'visio_')!==false)
					{
						$cell_content .= '<a  href="javascript: void(0);" onclick="window.open(\'' . $toolsRow['link'].$link_annex . '\',\'window_visio'.$_SESSION['_cid'].'\',config=\'height=\'+730+\', width=\'+1020+\', left=2, top=2, toolbar=no, menubar=no, scrollbars=yes, resizable=yes, location=no, directories=no, status=no\')" target="' . $toolsRow['target'] . '"><img src="'.str_replace(".gif", "_na.gif", $toolsRow['img']).'" title="'.$tool_name.'" alt="'.$tool_name.'" align="absmiddle" border="0">'.$tool_name.'</a>'."\n";
					}
					else if(strpos($toolsRow['name'],'chat')!==false && api_get_course_setting('allow_open_chat_window')==true)
					{
						/*
						$cell_content .= '<a href="#" onclick="window.open(\'' .$toolsRow['link'].$link_annex. '\',\'window_chat'.$_SESSION['_cid'].'\',config=\'height=\'+380+\', width=\'+625+\', left=2, top=2, toolbar=no, menubar=no, scrollbars=yes, resizable=yes, location=no, directories=no, status=no\')" target="' . $toolsRow['target'] . '" class="invisible"><img src="'.str_replace(".gif", "_na.gif", $toolsRow['img']).'" alt="'.get_lang(ucfirst($toolsRow['name'])).' " align="absmiddle" border="0">'.$tool_name.'</a>'."\n"; // don't replace img with display::return_icon because $toolsRow['img'] = api_get_path(WEB_IMG_PATH).$toolsRow['img']
						*/
						$cell_content .= '<a href="javascript: void(0);" onclick="window.open(\'' .$toolsRow['link'].$link_annex. '\',\'window_chat'.$_SESSION['_cid'].'\',config=\'height=\'+380+\', width=\'+625+\', left=2, top=2, toolbar=no, menubar=no, scrollbars=yes, resizable=yes, location=no, directories=no, status=no\')" target="' . $toolsRow['target'] . '" class="invisible"><img src="'.str_replace(".gif", "_na.gif", $toolsRow['img']).'" title="'.$tool_name.'" alt="'.$tool_name.'" align="absmiddle" border="0">'.$tool_name.'</a>'."\n"; // don't replace img with display::return_icon because $toolsRow['img'] = api_get_path(WEB_IMG_PATH).$toolsRow['img']
					}
					else
					{
						/*
						$cell_content .= '<a href="'.$toolsRow['link'].$link_annex.'" target="'.$toolsRow['target'].'" class="invisible"><img src="'.str_replace(".gif", "_na.gif", $toolsRow['img']).'" alt="'.get_lang(ucfirst($toolsRow['name'])).' " align="absmiddle" border="0">'.$tool_name.'</a>'."\n";// don't replace img with display::return_icon because $toolsRow['img'] = api_get_path(WEB_IMG_PATH).$toolsRow['img']
						*/
						$cell_content .= '<a href="'.$toolsRow['link'].$link_annex.'" target="'.$toolsRow['target'].'" class="invisible"><img src="'.str_replace(".gif", "_na.gif", $toolsRow['img']).'" title="'.$tool_name.'" alt="'.$tool_name.'" align="absmiddle" border="0">'.$tool_name.'</a>'."\n";// don't replace img with display::return_icon because $toolsRow['img'] = api_get_path(WEB_IMG_PATH).$toolsRow['img']
					}
				}
				else
				{
					/*
					$cell_content .= '<img src="'.str_replace(".gif", "_na.gif", $toolsRow['img']).'" alt="'.get_lang(ucfirst($toolsRow['name'])).' " align="absmiddle" border="0">'; // don't replace img with display::return_icon because $toolsRow['img'] = api_get_path(WEB_IMG_PATH).$toolsRow['img']
					*/
					$cell_content .= '<img src="'.str_replace(".gif", "_na.gif", $toolsRow['img']).'" title="'.$tool_name.'" alt="'.$tool_name.'" align="absmiddle" border="0">'; // don't replace img with display::return_icon because $toolsRow['img'] = api_get_path(WEB_IMG_PATH).$toolsRow['img']
					$cell_content .= '<span class="invisible">'.$tool_name.'</span>';
				}
			}
	
			$lnk = array ();
			if (api_is_allowed_to_edit(null,true) && $cat != "courseAdmin" && !strpos($toolsRow['link'], 'learnpath_handler.php?learnpath_id') && !api_is_coach())
			{
				if ($toolsRow["visibility"])
				{
					$link['name'] = Display::return_icon('remove.gif', get_lang('Deactivate'), array('style' => 'vertical-align:middle;'));
					$link['cmd'] = "hide=yes";
					$lnk[] = $link;
				}
				else
				{
					$link['name'] = Display::return_icon('add.gif', get_lang('Activate'), array('style' => 'vertical-align:middle;'));
					$link['cmd'] = "restore=yes";
					$lnk[] = $link;
	
					/*if($toolsRow["img"] == $dokeosRepositoryWeb."img/external.gif")
					{
						$link['name'] = get_lang('Remove'); $link['cmd']  = "remove=yes";
						if ($toolsRow["visibility"]==2 and $cat=="platformAdmin")
						{
							$link['name'] = get_lang('Delete'); $link['cmd'] = "askDelete=yes";
							$lnk[] = $link;
						}
					}*/
				}
				//echo "<div class=courseadmin>";
				if (is_array($lnk))
				{
					foreach ($lnk as $thisLnk)
					{
						if ($toolsRow['adminlink'])
						{
							$cell_content .= '<a href="'.$properties['adminlink'].'">'.Display::return_icon('edit.gif', get_lang('Edit')).'</a>';
							//echo "edit link:".$properties['adminlink'];
						}
						else
						{
							$cell_content .= "<a href=\"".api_get_self()."?id=".$toolsRow["id"]."&amp;".$thisLnk['cmd']."\">".$thisLnk['name']."</a>";
						}
					}
				}
	
				// RH: Allow editing of invisible homepage links (modified external_module)
				/*
				if ($toolsRow["added_tool"] == 1 && api_is_allowed_to_edit() && !$toolsRow["visibility"])
				*/
				if ($toolsRow["added_tool"] == 1 && api_is_allowed_to_edit() && !$toolsRow["visibility"]
					&& $toolsRow['image'] != 'scormbuilder.gif' && $toolsRow['image'] != 'scormbuilder_na.gif')
				{
					$cell_content .= "<a class=\"nobold\" href=\"".api_get_path(WEB_CODE_PATH).'external_module/external_module.php'."?id=".$toolsRow["id"]."\">".get_lang("Edit")."</a>";
				}
			}
			$table->setCellContents($cell_number / $numcols, ($cell_number) % $numcols, $cell_content);
			$table->updateCellAttributes($cell_number / $numcols, ($cell_number) % $numcols, 'width="32%" height="42"');
			$cell_number ++;
		}
		$table->display();
	} // end function showtools2($cat)
	
	/**
	 * Displays the tools of a certain category.
	 *
	 * @return void
	 * @param string $course_tool_category	contains the category of tools to display:
	 * "Public", "PublicButHide", "courseAdmin", "claroAdmin"
	 */
	function show_tool_2column($course_tool_category) {
		global $charset;
		$web_code_path = api_get_path(WEB_CODE_PATH);
		$course_tool_table = Database::get_course_table(TABLE_TOOL_LIST);
	
		switch ($course_tool_category)
		{
			case TOOL_PUBLIC:
	
					$result = Database::query("SELECT * FROM $course_tool_table WHERE visibility=1 ORDER BY id",__FILE__,__LINE__);
					$colLink ="##003399";
					break;
	
			case TOOL_PUBLIC_BUT_HIDDEN:
	
					$result = Database::query("SELECT * FROM $course_tool_table WHERE visibility=0 AND admin=0 ORDER BY id",__FILE__,__LINE__);
					$colLink ="##808080";
					break;
	
			case TOOL_COURSE_ADMIN:
	
					$result = Database::query("SELECT * FROM $course_tool_table WHERE admin=1 AND visibility != 2 ORDER BY id",__FILE__,__LINE__);
					$colLink ="##003399";
					break;
	
			case TOOL_PLATFORM_ADMIN:
	
					$result = Database::query("SELECT * FROM $course_tool_table WHERE visibility = 2 ORDER BY id",__FILE__,__LINE__);
					$colLink ="##003399";
		}
	
		$i=0;
	
		// grabbing all the tools from $course_tool_table
		while ($temp_row = Database::fetch_array($result))
		{
			if($course_tool_category == TOOL_PUBLIC_BUT_HIDDEN && $temp_row['image'] != 'scormbuilder.gif')
			{
				$temp_row['image']=str_replace('.gif','_na.gif',$temp_row['image']);
			}
			$all_tools_list[]=$temp_row;
		}
	
		// grabbing all the links that have the property on_homepage set to 1
		$course_link_table = Database::get_course_table(TABLE_LINK);
		$course_item_property_table = Database::get_course_table(TABLE_ITEM_PROPERTY);
		switch ($course_tool_category)
		{
			case TOOL_PUBLIC:
				$sql_links="SELECT tl.*, tip.visibility
						FROM $course_link_table tl
						LEFT JOIN $course_item_property_table tip ON tip.tool='link' AND tip.ref=tl.id
						WHERE tl.on_homepage='1' AND tip.visibility = 1";
				break;
			case TOOL_PUBLIC_BUT_HIDDEN:
				$sql_links="SELECT tl.*, tip.visibility
					FROM $course_link_table tl
					LEFT JOIN $course_item_property_table tip ON tip.tool='link' AND tip.ref=tl.id
					WHERE tl.on_homepage='1' AND tip.visibility = 0";
				break;
			default:
				$sql_links = null;
				break;
		}
		if( $sql_links != null )
		{
			$properties = array();
			$result_links=Database::query($sql_links,__FILE__,__LINE__);
			while ($links_row=Database::fetch_array($result_links))
			{
				unset($properties);
				$properties['name']=$links_row['title'];
				$properties['link']=$links_row['url'];
				$properties['visibility']=$links_row['visibility'];
				$properties['image']=($course_tool_category == TOOL_PUBLIC_BUT_HIDDEN)?"external_na.gif":"external.gif";
				$properties['adminlink']=api_get_path(WEB_CODE_PATH)."link/link.php?action=editlink&id=".$links_row['id'];
				$all_tools_list[]=$properties;
			}
		}
	
		if (isset($all_tools_list))
		{
			$lnk = array();
			foreach ($all_tools_list as $toolsRow)
			{
				if (api_get_session_id()!=0 && in_array($toolsRow['name'],array('course_maintenance','course_setting'))) {
					continue;
				}
	
				if (!($i%2))
				{
					echo	"<tr valign=\"top\">\n";
				}
	
				// NOTE : table contains only the image file name, not full path
				if(!stristr($toolsRow['link'],'http://') && !stristr($toolsRow['link'],'https://') && !stristr($toolsRow['link'],'ftp://'))
				{
					$toolsRow['link']=$web_code_path.$toolsRow['link'];
				}
				if ($course_tool_category == TOOL_PUBLIC_BUT_HIDDEN)
				{
				    $class="class=\"invisible\"";
				}
				$qm_or_amp = ((strpos($toolsRow['link'],'?')===FALSE)?'?':'&amp;');
	
				$toolsRow['link'] = $toolsRow['link'];
				echo	'<td width="50%" height="30">';
	
				if(strpos($toolsRow['name'],'visio_')!==false)
				{
					echo '<a  '.$class.' href="javascript: void(0);" onclick="window.open(\'' . htmlspecialchars($toolsRow['link']).(($toolsRow['image']=="external.gif" || $toolsRow['image']=="external_na.gif") ? '' : $qm_or_amp.api_get_cidreq()) . '\',\'window_visio'.$_SESSION['_cid'].'\',config=\'height=\'+730+\', width=\'+1020+\', left=2, top=2, toolbar=no, menubar=no, scrollbars=yes, resizable=yes, location=no, directories=no, status=no\')" target="' . $toolsRow['target'] . '">';
				}
	
				else if(strpos($toolsRow['name'],'chat')!==false && api_get_course_setting('allow_open_chat_window')==true)
				{
					/*
					echo  '<a href="#" onclick="window.open(\'' . htmlspecialchars($toolsRow['link']) .(($toolsRow['image']=="external.gif" || $toolsRow['image']=="external_na.gif") ? '' : $qm_or_amp.api_get_cidreq()). '\',\'window_chat'.$_SESSION['_cid'].'\',config=\'height=\'+380+\', width=\'+625+\', left=2, top=2, toolbar=no, menubar=no, scrollbars=yes, resizable=yes, location=no, directories=no, status=no\')" target="' . $toolsRow['target'] . '"'.$class.'>';
					*/
					echo  '<a href="javascript: void(0);" onclick="window.open(\'' . htmlspecialchars($toolsRow['link']).$qm_or_amp.api_get_cidreq() . '\',\'window_chat'.$_SESSION['_cid'].'\',config=\'height=\'+380+\', width=\'+625+\', left=2, top=2, toolbar=no, menubar=no, scrollbars=yes, resizable=yes, location=no, directories=no, status=no\')" target="' . $toolsRow['target'] . '"'.$class.'>';
				}
				else
				{
					echo	'<a href="'. htmlspecialchars($toolsRow['link']).(($toolsRow['image']=="external.gif" || $toolsRow['image']=="external_na.gif") ? '' : $qm_or_amp.api_get_cidreq()).'" target="' , $toolsRow['target'], '" '.$class.'>';
				}
	
				/*
				echo Display::return_icon($toolsRow['image'], get_lang(ucfirst($toolsRow['name']))),'&nbsp;', ($toolsRow['image']=="external.gif" || $toolsRow['image']=="external_na.gif" || $toolsRow['image']=="scormbuilder.gif" || $toolsRow['image']=="blog.gif") ? htmlspecialchars( $toolsRow['name'],ENT_QUOTES,$charset) : get_lang(ucfirst($toolsRow['name'])),'</a>';
				*/
				if ($toolsRow['image'] == 'file_html.gif' || $toolsRow['image'] == 'file_html_na.gif'
					|| $toolsRow['image'] == 'scormbuilder.gif' || $toolsRow['image'] == 'scormbuilder_na.gif'
					|| $toolsRow['image'] == 'blog.gif' || $toolsRow['image'] == 'blog_na.gif'
					|| $toolsRow['image'] == 'external.gif' || $toolsRow['image'] == 'external_na.gif')
				{
					$tool_name = htmlspecialchars($toolsRow['name'], ENT_QUOTES, $charset);
				}
				else
				{
					$tool_name = get_lang(ucfirst($toolsRow['name']));
				}
				echo Display::return_icon($toolsRow['image'], $tool_name),'&nbsp;', $tool_name,'</a>';
	
				// This part displays the links to hide or remove a tool.
				// These links are only visible by the course manager.
				unset($lnk);
				if (api_is_allowed_to_edit(null,true) && !api_is_coach())
				{
					if ($toolsRow["visibility"] == '1')
					{
						$link['name'] = Display::return_icon('remove.gif', get_lang('Deactivate'));
						$link['cmd'] = "hide=yes";
						$lnk[] = $link;
					}
	
					if ($course_tool_category == TOOL_PUBLIC_BUT_HIDDEN)
					{
						$link['name'] = Display::return_icon('add.gif', get_lang('Activate'));
						$link['cmd']  = "restore=yes";
						$lnk[] = $link;
	
						if($toolsRow["added_tool"] == 1)
						{
							$link['name'] = Display::return_icon('delete.gif', get_lang('Remove'));
							$link['cmd']  = "remove=yes";
							$lnk[] = $link;
						}
					}
					if ($toolsRow['adminlink'])
					{
						echo	'<a href="'.$toolsRow['adminlink'].'">'.Display::return_icon('edit.gif', get_lang('Edit')).'</a>';
						//echo "edit link:".$properties['adminlink'];
					}
	
				}
				if ( api_is_platform_admin() )
				{
					if ($toolsRow["visibility"]==2)
					{
						$link['name'] = Display::return_icon('undelete.gif', get_lang('Activate'));
	
						$link['cmd']  = "hide=yes";
						$lnk[] = $link;
	
						if($toolsRow["added_tool"] == 1)
						{
							$link['name'] = get_lang("Delete");
							$link['cmd'] = "askDelete=yes";
							$lnk[] = $link;
						}
					}
	
					if ($toolsRow["visibility"] == 0 && $toolsRow["added_tool"] == 0)
					{
						$link['name'] = Display::return_icon('delete.gif', get_lang('Remove'));
						$link['cmd'] = "remove=yes";
						$lnk[] = $link;
					}
				}
				if (is_array($lnk))
				{
					foreach($lnk as $this_link)
					{
						if (!$toolsRow['adminlink'])
							{
								echo "<a href=\"" .api_get_self(). "?".api_get_cidreq()."&amp;id=" . $toolsRow["id"] . "&amp;" . $this_link['cmd'] . "\">" .	$this_link['name'] . "</a>";
							}
					}
				}
	
				// Allow editing of invisible homepage links (modified external_module)
				/*
				if ($toolsRow["added_tool"] == 1 &&
						api_is_allowed_to_edit() && !$toolsRow["visibility"])
				*/
				if ($toolsRow["added_tool"] == 1 && api_is_allowed_to_edit(null,true) && !$toolsRow["visibility"]
					&& $toolsRow['image'] != 'scormbuilder.gif' && $toolsRow['image'] != 'scormbuilder_na.gif')
					echo	"<a class=\"nobold\" href=\"" . api_get_path(WEB_PATH) .
							'main/external_module/external_module.php' .
							"?".api_get_cidreq()."&amp;id=".$toolsRow["id"]."\">". get_lang("Edit"). "</a>";
	
				echo "</td>\n";
	
				if($i%2)
				{
					echo "</tr>\n";
				}
	
				$i++;
			}
		}
	
		if($i%2)
		{
			echo	"<td width=\"50%\">&nbsp;</td>\n",
					"</tr>\n";
		}
	}
		
	/**
	 * Gets the tools of a certain category. Returns an array expected 
	 * by show_tools_category()
	 * @param string $course_tool_category	contains the category of tools to 
	 * display: "toolauthoring", "toolinteraction", "tooladmin", "tooladminplatform"
	 * @return array
	 */
	 
	public static function get_tools_category($course_tool_category) {
		global $_user;
		$web_code_path = api_get_path(WEB_CODE_PATH);
		$course_tool_table = Database::get_course_table(TABLE_TOOL_LIST);
		$is_allowed_to_edit = api_is_allowed_to_edit(null,true);
		$is_platform_admin = api_is_platform_admin();
		$all_tools_list = array();
		
		//condition for the session
		$session_id = api_get_session_id();
		$condition_session = api_get_session_condition($session_id,true,true);
	
		switch ($course_tool_category) {	
			case TOOL_STUDENT_VIEW:					
					//$visibility_codition = !api_is_coach()?" visibility = '1' AND ":" ";
					$sql = "SELECT * FROM $course_tool_table WHERE visibility = '1' AND (category = 'authoring' OR category = 'interaction') $condition_session ORDER BY id";				
					$result = Database::query($sql,__FILE__,__LINE__);
					$colLink ="##003399";
					break;	
			case TOOL_AUTHORING:
					$sql = "SELECT * FROM $course_tool_table WHERE category = 'authoring' $condition_session ORDER BY id";
					$result = Database::query($sql,__FILE__,__LINE__);
					$colLink ="##003399";
					break;	
			case TOOL_INTERACTION:
					$sql = "SELECT * FROM $course_tool_table WHERE category = 'interaction' $condition_session ORDER BY id";
					$result = Database::query($sql,__FILE__,__LINE__);
					$colLink ="##003399";
					break;	
			case TOOL_ADMIN_VISIBLE:
					$sql = "SELECT * FROM $course_tool_table WHERE category = 'admin' AND visibility ='1' $condition_session ORDER BY id";
					$result = Database::query($sql,__FILE__,__LINE__);
					$colLink ="##003399";
					break;
			case TOOL_ADMIN_PLATEFORM:
					$sql = "SELECT * FROM $course_tool_table WHERE category = 'admin' $condition_session ORDER BY id";
					$result = Database::query($sql,__FILE__,__LINE__);
					$colLink ="##003399";
					break;		
		}	
	
		while ($temp_row = Database::fetch_array($result)) {
			$all_tools_list[]=$temp_row;
		}
	
		/*if(api_is_course_coach())
		{
			$result = Database::query("SELECT * FROM $course_tool_table WHERE name='tracking'",__FILE__,__LINE__);
			$all_tools_list[]=Database :: fetch_array($result);
		}*/
	
		$i=0;
		// grabbing all the links that have the property on_homepage set to 1
		$course_link_table = Database::get_course_table(TABLE_LINK);
		$course_item_property_table = Database::get_course_table(TABLE_ITEM_PROPERTY);
	
		switch ($course_tool_category) {
				case TOOL_AUTHORING:
				$sql_links="SELECT tl.*, tip.visibility
						FROM $course_link_table tl
						LEFT JOIN $course_item_property_table tip ON tip.tool='link' AND tip.ref=tl.id
						WHERE tl.on_homepage='1' $condition_session";	
				break;
	
				case TOOL_INTERACTION:
				$sql_links = null;
				/*
				$sql_links="SELECT tl.*, tip.visibility
					FROM $course_link_table tl
					LEFT JOIN $course_item_property_table tip ON tip.tool='link' AND tip.ref=tl.id
							WHERE tl.on_homepage='1' ";
				*/
				break;
	
				case TOOL_STUDENT_VIEW:
					$sql_links="SELECT tl.*, tip.visibility
					FROM $course_link_table tl
					LEFT JOIN $course_item_property_table tip ON tip.tool='link' AND tip.ref=tl.id
							WHERE tl.on_homepage='1' $condition_session";
				break;
	
				case TOOL_ADMIN:
					$sql_links="SELECT tl.*, tip.visibility
					FROM $course_link_table tl
					LEFT JOIN $course_item_property_table tip ON tip.tool='link' AND tip.ref=tl.id
							WHERE tl.on_homepage='1' $condition_session";
				break;
	
			default:
				$sql_links = null;
				break;
		}
	
		//edit by Kevin Van Den Haute (kevin@develop-it.be) for integrating Smartblogs
		if ($sql_links != null) {
			$result_links = Database::query($sql_links,__FILE__,__LINE__);
			$properties = array();
			if (Database::num_rows($result_links) > 0) {
				while ($links_row = Database::fetch_array($result_links)) {
					unset($properties);
					$properties['name'] = $links_row['title'];
					$properties['session_id'] = $links_row['session_id'];
					$properties['link'] = $links_row['url'];
					$properties['visibility'] = $links_row['visibility'];
					$properties['image'] = ($links_row['visibility']== '0') ? "file_html.gif" : "file_html.gif";
					$properties['adminlink'] = api_get_path(WEB_CODE_PATH) . "link/link.php?action=editlink&id=".$links_row['id'];
					$properties['target'] = $links_row['target'];
					$tmp_all_tools_list[] = $properties;
				}
			}
		}
	
		if (isset($tmp_all_tools_list)) {
			foreach ($tmp_all_tools_list as $toolsRow) {
				if ($toolsRow['image'] == 'blog.gif') {
					// Init
					$tbl_blogs_rel_user = Database::get_course_table(TABLE_BLOGS_REL_USER);
	
					// Get blog id
					$blog_id = substr($toolsRow['link'], strrpos($toolsRow['link'], '=') + 1, strlen($toolsRow['link']));
	
					// Get blog members
					if($is_platform_admin) {
						$sql_blogs = "
							SELECT *
							FROM " . $tbl_blogs_rel_user . " blogs_rel_user
							WHERE blog_id = " . $blog_id;
					} else {
						$sql_blogs = "
							SELECT *
							FROM " . $tbl_blogs_rel_user . " blogs_rel_user
							WHERE
								blog_id = " . $blog_id . " AND
								user_id = " . api_get_user_id();
					}
	
					$result_blogs = Database::query($sql_blogs, __FILE__, __LINE__);
	
					if (Database::num_rows($result_blogs) > 0) {
						$all_tools_list[] = $toolsRow;
					}
				} else {
					$all_tools_list[] = $toolsRow;
				}
			}
		}
		return $all_tools_list;
	}
	
	/**
	 * Displays the tools of a certain category.
	 * @param array List of tools as returned by get_tools_category()
	 * @return void
	 */
	
	public static function show_tools_category($all_tools_list)
	{
		global $_user;
		$web_code_path = api_get_path(WEB_CODE_PATH);
		$course_tool_table = Database::get_course_table(TABLE_TOOL_LIST);
		$is_allowed_to_edit = api_is_allowed_to_edit(null,true);
		$is_platform_admin = api_is_platform_admin();
		$i = 0;
		if (isset($all_tools_list)) {
			$lnk = '';
			foreach ($all_tools_list as $toolsRow) {
				if (api_get_session_id()!=0 && in_array($toolsRow['name'],array('course_maintenance','course_setting'))) {
					continue;
				}
	
				if (!($i%2)) {
					echo	"<tr valign=\"top\">\n";
	            }
	
				// This part displays the links to hide or remove a tool.
				// These links are only visible by the course manager.
				unset($lnk);
				echo '<td width="50%">' . "\n";
				if ($is_allowed_to_edit && !api_is_coach()) {
	
					if ($toolsRow['visibility'] == '1' && $toolsRow['admin'] !='1') {
						$link['name'] = Display::return_icon('visible.gif', get_lang('Deactivate'),array('id'=>'linktool_'.$toolsRow["id"]));
						$link['cmd'] = "hide=yes";
						$lnk[] = $link;
					}
	
					if ($toolsRow['visibility'] == '0' && $toolsRow['admin'] !='1') {
						$link['name'] = Display::return_icon('invisible.gif', get_lang('Activate'),array('id'=>'linktool_'.$toolsRow["id"]));
						$link['cmd'] = "restore=yes";
						$lnk[] = $link;
					}
	
					if (!empty($toolsRow['adminlink'])) {
						echo '<a href="'.$toolsRow['adminlink'].'">'.Display::return_icon('edit.gif', get_lang('Edit')).'</a>';
					}
	
				}
	
				// Both checks are necessary as is_platform_admin doesn't take student view into account
				if ($is_platform_admin && $is_allowed_to_edit) {
	 				if ($toolsRow['admin'] !='1') {
						$link['cmd'] = "hide=yes";
					}
				}
	
				if (isset($lnk) && is_array($lnk)) {
					foreach ($lnk as $this_link)	{
						if (empty($toolsRow['adminlink'])) {
							echo '<a class="make_visible_and_invisible"  href="'.api_get_self(). '?'.api_get_cidreq()."&amp;id=" . $toolsRow['id'] . "&amp;" . $this_link['cmd'] . "\">" .	$this_link['name'] . "</a>";
						}
					}
				} else { echo '&nbsp;&nbsp;&nbsp;&nbsp;';}
	
				// NOTE : table contains only the image file name, not full path
				if (!stristr($toolsRow['link'], 'http://') 
	                    && !stristr($toolsRow['link'], 'https://') 
	                    && !stristr($toolsRow['link'],'ftp://')) {
					$toolsRow['link'] = $web_code_path . $toolsRow['link'];
	            }
				if ($toolsRow['visibility'] == '0' && $toolsRow['admin'] != '1') {
				  	$class="class=\"invisible\"";
				  	$info = pathinfo($toolsRow['image']);
				  	$basename = basename ($toolsRow['image'],'.'.$info['extension']); // $file is set to "index"
					$toolsRow['image'] = $basename.'_na.'.$info['extension'];
				} else {
					$class='';
				}
	
				$qm_or_amp = ((strpos($toolsRow['link'], '?') === FALSE) ? '?' : '&amp;');
				//If it's a link, we don't add the cidReq
				if ($toolsRow['image'] == 'file_html.gif' || $toolsRow['image'] == 'file_html_na.gif') {
					$toolsRow['link'] = $toolsRow['link'].$qm_or_amp;
				} else {
					$toolsRow['link'] = $toolsRow['link'].$qm_or_amp.api_get_cidreq();
				}
				if (strpos($toolsRow['name'],'visio_')!==false) {
					/*
					$toollink = "\t" . '<a ' . $class . ' href="#" onclick="window.open(\'' . htmlspecialchars($toolsRow['link']) . '\',\'window_visio\',config=\'height=\'+730+\', width=\'+1020+\', left=2, top=2, toolbar=no, menubar=no, scrollbars=yes, resizable=yes, location=no, directories=no, status=no\')" target="' . $toolsRow['target'] . '">';
					*/
	
					$toollink = "\t" . '<a id="tooldesc_'.$toolsRow["id"].'"  ' . $class . ' href="javascript: void(0);" onclick="window.open(\'' . htmlspecialchars($toolsRow['link']) . '\',\'window_visio'.$_SESSION['_cid'].'\',config=\'height=\'+730+\', width=\'+1020+\', left=2, top=2, toolbar=no, menubar=no, scrollbars=yes, resizable=yes, location=no, directories=no, status=no\')" target="' . $toolsRow['target'] . '">';
					$my_tool_link = "\t" . '<a id="istooldesc_'.$toolsRow["id"].'"  ' . $class . ' href="javascript: void(0);" onclick="window.open(\'' . htmlspecialchars($toolsRow['link']) . '\',\'window_visio'.$_SESSION['_cid'].'\',config=\'height=\'+730+\', width=\'+1020+\', left=2, top=2, toolbar=no, menubar=no, scrollbars=yes, resizable=yes, location=no, directories=no, status=no\')" target="' . $toolsRow['target'] . '">';
				} elseif (strpos($toolsRow['name'],'chat')!==false && api_get_course_setting('allow_open_chat_window')==true) {
					/*
					$toollink = "\t" . '<a ' . $class . ' href="#" onclick="window.open(\'' . htmlspecialchars($toolsRow['link']) . '\',\'window_chat'.$_SESSION['_cid'].'\',config=\'height=\'+380+\', width=\'+625+\', left=2, top=2, toolbar=no, menubar=no, scrollbars=yes, resizable=yes, location=no, directories=no, status=no\')" target="' . $toolsRow['target'] . '">';
					*/
					$toollink = "\t" . '<a id="tooldesc_'.$toolsRow["id"].'" ' . $class . ' href="javascript: void(0);" onclick="window.open(\'' . htmlspecialchars($toolsRow['link']) . '\',\'window_chat'.$_SESSION['_cid'].'\',config=\'height=\'+380+\', width=\'+625+\', left=2, top=2, toolbar=no, menubar=no, scrollbars=yes, resizable=yes, location=no, directories=no, status=no\')" target="' . $toolsRow['target'] . '">';
					$my_tool_link="\t" . '<a id="istooldesc_'.$toolsRow["id"].'" ' . $class . ' href="javascript: void(0);" onclick="window.open(\'' . htmlspecialchars($toolsRow['link']) . '\',\'window_chat'.$_SESSION['_cid'].'\',config=\'height=\'+380+\', width=\'+625+\', left=2, top=2, toolbar=no, menubar=no, scrollbars=yes, resizable=yes, location=no, directories=no, status=no\')" target="' . $toolsRow['target'] . '">';
	
				} else {
	
					if (count(explode('type=classroom',$toolsRow['link']))==2 || count(explode('type=conference',$toolsRow['link']))==2) {
						//$toollink = "\t" . '<a ' . $class . ' href="' . $toolsRow['link'] . '" target="_blank">';
						$toollink = "\t" . '<a id="tooldesc_'.$toolsRow["id"].'" ' . $class . ' href="' . $toolsRow['link'] . '" target="_blank">';
						$my_tool_link = "\t" . '<a id="istooldesc_'.$toolsRow["id"].'" ' . $class . ' href="' . $toolsRow['link'] . '" target="_blank">';
	
					} else {
						//$toollink = "\t" . '<a ' . $class . ' href="' . htmlspecialchars($toolsRow['link']) . '" target="' . $toolsRow['target'] . '">';
						$toollink = "\t" . '<a id="tooldesc_'.$toolsRow["id"].'" ' . $class . ' href="' . htmlspecialchars($toolsRow['link']) . '" target="' . $toolsRow['target'] . '">';
						$my_tool_link = "\t" . '<a id="istooldesc_'.$toolsRow["id"].'" ' . $class . ' href="' . htmlspecialchars($toolsRow['link']) . '" target="' . $toolsRow['target'] . '">';
	
					}
	
				}
				echo $toollink;
				//var_dump($toollink);
				/*
				Display::display_icon($toolsRow['image'], get_lang(ucfirst($toolsRow['name'])));
				*/
				if ($toolsRow['image'] == 'file_html.gif' || $toolsRow['image'] == 'file_html_na.gif'
					|| $toolsRow['image'] == 'scormbuilder.gif' || $toolsRow['image'] == 'scormbuilder_na.gif'
					|| $toolsRow['image'] == 'blog.gif' || $toolsRow['image'] == 'blog_na.gif'
					|| $toolsRow['image'] == 'external.gif' || $toolsRow['image'] == 'external_na.gif')
				{
					$tool_name = stripslashes($toolsRow['name']);
				} else {
					$tool_name = get_lang(ucfirst($toolsRow['name']));
				}
				Display::display_icon($toolsRow['image'], $tool_name, array('class'=>'tool-icon','id'=>'toolimage_'.$toolsRow["id"]));
	
				//validacion when belongs to a session
				$session_img = api_get_session_image($toolsRow['session_id'], $_user['status']);
	
				echo '</a> ';
	
				echo $my_tool_link;
				/*
					echo ($toolsRow['image'] == 'file_html_na.gif' || $toolsRow['image'] == 'file_html.gif' || $toolsRow['image'] == 'scormbuilder.gif' || $toolsRow['image'] == 'scormbuilder_na.gif' || $toolsRow['image'] == 'blog.gif' || $toolsRow['image'] == 'blog_na.gif' || $toolsRow['image'] == 'external.gif' || $toolsRow['image'] == 'external_na.gif') ? '  '.stripslashes($toolsRow['name']) : '  '.get_lang(ucfirst($toolsRow['name']));
				*/
				echo "{$tool_name}$session_img";
				echo "\t" . '</a>';
				echo '</td>';
				if ($i%2) {
					echo "</tr>";
				}
				$i++;
			}
		}
	
		if ($i%2) {
			echo	"<td width=\"50%\">&nbsp;</td>\n",
					"</tr>\n";
		}
	}
	
	
	/**
	 * Shows the general data for a particular meeting
	 *
	 * @param id	session id
	 * @return string	session data
	 *
	 */
	public static function show_session_data($id_session) {
		$session_table 			= Database::get_main_table(TABLE_MAIN_SESSION);
		$user_table 			= Database::get_main_table(TABLE_MAIN_USER);
		$session_category_table = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
		
		if ($id_session!=strval(intval($id_session))) {
			return '';
		} else {
			$id_session = intval($id_session);
		}
		
		$sql = 'SELECT name, nbr_courses, nbr_users, nbr_classes, DATE_FORMAT(date_start,"%d-%m-%Y") as date_start, DATE_FORMAT(date_end,"%d-%m-%Y") as date_end, lastname, firstname, username, session_admin_id, nb_days_access_before_beginning, nb_days_access_after_end, session_category_id, visibility
					FROM '.$session_table.'
				LEFT JOIN '.$user_table.'
					ON id_coach = user_id
				WHERE '.$session_table.'.id='.$id_session;
	
		$rs = Database::query($sql, __FILE__, __LINE__);
		$session = Database::store_result($rs);
		$session = $session[0];
	
		$sql_category = 'SELECT name FROM '.$session_category_table.' WHERE id = "'.intval($session['session_category_id']).'"';
		$rs_category = Database::query($sql_category, __FILE__, __LINE__);
		$session_category = '';
		if (Database::num_rows($rs_category) > 0) {
			$rows_session_category = Database::store_result($rs_category);
			$rows_session_category = $rows_session_category[0];
			$session_category = $rows_session_category['name'];
		}
	
		if ($session['date_start'] == '00-00-0000') {
			$msg_date = get_lang('NoTimeLimits');
		} else {
			$msg_date = get_lang('From').' '.$session['date_start'].' '.get_lang('To').' '.$session['date_end'];
		}
	
		$output  = '';
		if (!empty($session_category)) {
			$output .= '<tr><td>'. get_lang('SessionCategory') . ': ' . '<b>' . $session_category .'</b></td></tr>';
		}
		$output .= '<tr><td style="width:50%">'. get_lang('SessionName') . ': ' . '<b>' . $session['name'] .'</b></td><td>'. get_lang('GeneralCoach') . ': ' . '<b>' . $session['lastname'].' '.$session['firstname'].' ('.$session['username'].')' .'</b></td></tr>';
		$output .= '<tr><td>'. get_lang('SessionIdentifier') . ': '. Display::return_icon('star.png', ' ', array('align' => 'absmiddle')) .'</td><td>'. get_lang('Date') . ': ' . '<b>' . $msg_date .'</b></td></tr>';
	
		return $output;
	}


	
}
?>
