<?php

	/**
	 * Elgg blog: edit post action
	 * 
	 * @package ElggBlog
	 * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
	 * @author Curverider Ltd <info@elgg.com>
	 * @copyright Curverider Ltd 2008-2009
	 * @link http://elgg.org/
	 */

	// Make sure we're logged in (send us to the front page if not)
		gatekeeper();

        // make sure action is secure
        action_gatekeeper();

	// Get input data
		$guid = (int) get_input('blogpost');
		$title = get_input('blogtitle');
		$body = get_input('blogbody');
		$access = get_input('access_id');
		$tags = get_input('blogtags');
		$comments_on = get_input('comments_select','Off');
		$excerpt = get_input('blogexcerpt');
		if($excerpt){
			if(strlen($excerpt) > 300)
        		$excerpt = substr($excerpt, 0, strpos($excerpt, ' ', 300));
        	else
        		$excerpt = strip_tags($excerpt);
			
			$show_excerpt = true;
		}
		if(!$excerpt){
			//grab the first 300 characters
			if(strlen($body) > 300)
        		$excerpt = substr($body, 0, strpos($body, ' ', 300)) . "...";
        	else
        		$excerpt = strip_tags($body);
		
        	$show_excerpt = false;
    	}
		
	// Make sure we actually have permission to edit
		$blog = get_entity($guid);
		if ($blog->getSubtype() == "blog" && $blog->canEdit()) {
	
		// Cache to the session
			
			$_SESSION['user']->blogtitle = $title;
			$_SESSION['user']->blogbody = $body;
			$_SESSION['user']->blogtags = $tags;
			
		// Convert string of tags into a preformatted array
			$tagarray = string_to_tag_array($tags);
			
		// Make sure the title / description aren't blank
			if (empty($title) || empty($body)) {
				register_error(elgg_echo("blog:blank"));
				forward("mod/blog/add.php");
				
		// Otherwise, save the blog post 
			} else {
				
		// Get owning user
				$owner = get_entity($blog->getOwner());
		// For now, set its access to public (we'll add an access dropdown shortly)
				$blog->access_id = $access;
		// Set its title and description appropriately
				$blog->title = $title;
				$blog->description = $body;
		// Before we can set metadata, we need to save the blog post
				if (!$blog->save()) {
					register_error(elgg_echo("blog:error"));
					forward("mod/blog/edit.php?blogpost=" . $guid);
				}
		// Now let's add tags. We can pass an array directly to the object property! Easy.
				$blog->clearMetadata('tags');
				if (is_array($tagarray)) {
					$blog->tags = $tagarray;
				}
				$blog->excerpt = $excerpt;
				$blog->comments_on = $comments_on; //whether the users wants to allow comments or not on the blog post
				$blog->show_excerpt = $show_excerpt;
				
		// Success message
				system_message(elgg_echo("blog:posted"));
		//add to the river
				add_to_river('river/object/blog/update','update',$_SESSION['user']->guid,$blog->guid);
		// Remove the blog post cache
				//unset($_SESSION['blogtitle']); unset($_SESSION['blogbody']); unset($_SESSION['blogtags']);
				remove_metadata($_SESSION['user']->guid,'blogtitle');
				remove_metadata($_SESSION['user']->guid,'blogbody');
				remove_metadata($_SESSION['user']->guid,'blogtags');
		// Forward to the main blog page
			$page_owner = get_entity($blog->container_guid);
			if ($page_owner instanceof ElggUser)
				$username = $page_owner->username;
			else if ($page_owner instanceof ElggGroup)
				$username = "group:" . $page_owner->guid;
			forward("pg/blog/$username");
					
			}
		
		}
		
?>