<?php
/**
 * gets a location
 * @param mixed $id
 * @param mixed $search_by
 * @return EM_Location
 */
function em_get_location($id = false, $search_by = 'location_id') {
	if( is_object($id) && get_class($id) == 'EM_Location' ){
		return apply_filters('em_get_location', $id);
	}else{
		return apply_filters('em_get_location', new EM_Location($id,$search_by));
	}
}
/**
 * Object that holds location info and related functions
 * @author marcus
 */
class EM_Location extends EM_Object {
	//DB Fields
	var $location_id = '';
	var $post_id = '';
	var $blog_id = '';
	var $location_slug = '';
	var $location_name = '';
	var $location_address = '';
	var $location_town = '';
	var $location_state = '';
	var $location_postcode = '';
	var $location_region = '';
	var $location_country = '';
	var $location_latitude = 0;
	var $location_longitude = 0;
	var $post_content = '';
	var $location_owner = '';
	var $location_status = 0;
	//Other Vars
	var $fields = array( 
		'location_id' => array('name'=>'id','type'=>'%d'),
		'post_id' => array('name'=>'post_id','type'=>'%d'),
		'blog_id' => array('name'=>'blog_id','type'=>'%d'),
		'location_slug' => array('name'=>'slug','type'=>'%s', 'null'=>true), 
		'location_name' => array('name'=>'name','type'=>'%s', 'null'=>true), 
		'location_address' => array('name'=>'address','type'=>'%s','null'=>true),
		'location_town' => array('name'=>'town','type'=>'%s','null'=>true),
		'location_state' => array('name'=>'state','type'=>'%s','null'=>true),
		'location_postcode' => array('name'=>'postcode','type'=>'%s','null'=>true),
		'location_region' => array('name'=>'region','type'=>'%s','null'=>true),
		'location_country' => array('name'=>'country','type'=>'%s','null'=>true),
		'location_latitude' =>  array('name'=>'latitude','type'=>'%f','null'=>true),
		'location_longitude' => array('name'=>'longitude','type'=>'%f','null'=>true),
		'post_content' => array('name'=>'description','type'=>'%s', 'null'=>true),
		'location_owner' => array('name'=>'owner','type'=>'%d', 'null'=>true),
		'location_status' => array('name'=>'status','type'=>'%d', 'null'=>true)
	);
	var $post_fields = array('post_id','location_slug','location_name','post_content','location_owner');
	var $location_attributes = array();
	var $image_url = '';
	var $required_fields = array();
	var $feedback_message = "";
	var $mime_types = array(1 => 'gif', 2 => 'jpg', 3 => 'png'); 
	var $errors = array();
	/**
	 * previous status of location
	 * @access protected
	 * @var mixed
	 */
	var $previous_status = false;
	
	/* Post Variables - copied out of post object for easy IDE reference */
	var $ID;
	var $post_author;
	var $post_date;
	var $post_date_gmt;
	var $post_title;
	var $post_excerpt = '';
	var $post_status;
	var $comment_status;
	var $ping_status;
	var $post_password;
	var $post_name;
	var $to_ping;
	var $pinged;
	var $post_modified;
	var $post_modified_gmt;
	var $post_content_filtered;
	var $post_parent;
	var $guid;
	var $menu_order;
	var $post_type;
	var $post_mime_type;
	var $comment_count;
	var $ancestors;
	var $filter;
	
	
	/**
	 * Gets data from POST (default), supplied array, or from the database if an ID is supplied
	 * @param $location_data
	 * @param $search_by can be set to post_id or a number for a blog id if in ms mode with global tables, default is location_id
	 * @return null
	 */
	function __construct($id = false,  $search_by = 'location_id' ) {
		global $wpdb;
		//Initialize
		$this->required_fields = array("location_address" => __('The location address', 'events-manager'), "location_town" => __('The location town', 'events-manager'), "location_country" => __('The country', 'events-manager'));
		//Get the post_id/location_id
		$is_post = !empty($id->ID) && $id->post_type == EM_POST_TYPE_LOCATION;
		if( $is_post || absint($id) > 0 ){ //only load info if $id is a number
			$location_post = false;
			if($search_by == 'location_id' && !$is_post){
				//search by location_id, get post_id and blog_id (if in ms mode) and load the post
				$results = $wpdb->get_row($wpdb->prepare("SELECT post_id, blog_id FROM ".EM_LOCATIONS_TABLE." WHERE location_id=%d",$id), ARRAY_A);
				if( !empty($results['post_id']) ){
				    $this->post_id = $results['post_id'];
					if( is_multisite() ){
					    if( empty($results['blog_id']) || (EM_MS_GLOBAL && get_site_option('dbem_ms_mainblog_locations')) ){
							$results['blog_id'] = get_current_site()->blog_id;					        
					    }
						$location_post = get_blog_post($results['blog_id'], $results['post_id']);
						$search_by = $results['blog_id'];
					}else{
						$location_post = get_post($results['post_id']);
					}
				}
			}else{
				if(!$is_post){
				    if( EM_MS_GLOBAL && get_site_option('dbem_ms_mainblog_locations') ){
				        //blog_id will always be the main blog id if global locations are restricted only to the main blog
				        $search_by = get_current_site()->blog_id;
				    }
				    if( is_numeric($search_by) && is_multisite() ){
						//we've been given a blog_id, so we're searching for a post id
						$location_post = get_blog_post($search_by, $id);
					}else{
						//search for the post id only
						$location_post = get_post($id);	
					}
				}else{
					$location_post = $id;
				}
				$this->post_id = !empty($id->ID) ? $id->ID : $id;
			}
			$this->load_postdata($location_post, $search_by);
		}
		$this->compat_keys();
		do_action('em_location', $this, $id, $search_by);
	}
	
	function load_postdata($location_post, $search_by = false){
		if( is_object($location_post) ){
			if( $location_post->post_status != 'auto-draft' ){
				if( is_numeric($search_by) && is_multisite() ){
					// if in multisite mode, switch blogs quickly to get the right post meta.
					switch_to_blog($search_by);
					$location_meta = get_post_custom($location_post->ID);
					restore_current_blog();
					$this->blog_id = $search_by;
				}else{
					$location_meta = get_post_custom($location_post->ID);
				}	
				//Get custom fields
				foreach($location_meta as $location_meta_key => $location_meta_val){
					$found = false;
					foreach($this->fields as $field_name => $field_info){
						if( $location_meta_key == '_'.$field_name){
							$this->$field_name = $location_meta_val[0];
							$found = true;
						}
					}
					if(!$found && $location_meta_key[0] != '_'){
						$this->location_attributes[$location_meta_key] = ( count($location_meta_val) > 1 ) ? $location_meta_val:$location_meta_val[0];					
					}
				}	
			}
			//load post data - regardless
			$this->post_id = $location_post->ID;
			$this->location_name = $location_post->post_title;
			$this->location_slug = $location_post->post_name;
			$this->location_owner = $location_post->post_author;
			$this->post_content = $location_post->post_content;
			foreach( $location_post as $key => $value ){ //merge the post data into location object
				$this->$key = $value;
			}
			$this->get_status();
		}elseif( !empty($this->post_id) ){
			//we have an orphan... show it, so that we can at least remove it on the front-end
			global $wpdb;
		    $location_array = $wpdb->get_row($wpdb->prepare("SELECT * FROM ".EM_LOCATIONS_TABLE." WHERE post_id=%d",$this->post_id), ARRAY_A);
		    if( is_array($location_array) ){
				$this->orphaned_location = true;
				$this->post_id = $this->ID = $event_array['post_id'] = null; //reset post_id because it doesn't really exist
				$this->to_object($location_array);
		    }
		}
	}
	
	/**
	 * Retrieve event information via POST (used in situations where posts aren't submitted via WP)
	 * @param boolean $validate whether or not to run validation, default is true
	 * @return boolean
	 */
	function get_post($validate = true){
	    global $allowedtags;
		do_action('em_location_get_post_pre', $this);
		$this->location_name = ( !empty($_POST['location_name']) ) ? htmlspecialchars_decode(wp_kses_data(htmlspecialchars_decode(wp_unslash($_POST['location_name'])))):'';
		$this->post_content = ( !empty($_POST['content']) ) ? wp_kses( wp_unslash($_POST['content']), $allowedtags):'';
		$this->get_post_meta(false);
		$result = $validate ? $this->validate():true; //validate both post and meta, otherwise return true
		$this->compat_keys();
		return apply_filters('em_location_get_post', $result, $this);		
	}
	/**
	 * Retrieve event post meta information via POST, which should be always be called when saving the event custom post via WP.
	 * @param boolean $validate whether or not to run validation, default is true
	 * @return mixed
	 */
	function get_post_meta($validate = true){
		//We are getting the values via POST or GET
		do_action('em_location_get_post_meta_pre', $this);
		$this->location_address = ( !empty($_POST['location_address']) ) ? wp_kses(wp_unslash($_POST['location_address']), array()):'';
		$this->location_town = ( !empty($_POST['location_town']) ) ? wp_kses(wp_unslash($_POST['location_town']), array()):'';
		$this->location_state = ( !empty($_POST['location_state']) ) ? wp_kses(wp_unslash($_POST['location_state']), array()):'';
		$this->location_postcode = ( !empty($_POST['location_postcode']) ) ? wp_kses(wp_unslash($_POST['location_postcode']), array()):'';
		$this->location_region = ( !empty($_POST['location_region']) ) ? wp_kses(wp_unslash($_POST['location_region']), array()):'';
		$this->location_country = ( !empty($_POST['location_country']) ) ? wp_kses(wp_unslash($_POST['location_country']), array()):'';
		$this->location_latitude = ( !empty($_POST['location_latitude']) && is_numeric($_POST['location_latitude']) ) ? $_POST['location_latitude']:'';
		$this->location_longitude = ( !empty($_POST['location_longitude']) && is_numeric($_POST['location_longitude']) ) ? $_POST['location_longitude']:'';
		//Sort out event attributes - note that custom post meta now also gets inserted here automatically (and is overwritten by these attributes)
		if(get_option('dbem_location_attributes_enabled')){
			global $allowedtags;
			if( !is_array($this->location_attributes) ){ $this->location_attributes = array(); }
			$location_available_attributes = em_get_attributes(true); //lattributes only
			if( !empty($_POST['em_attributes']) && is_array($_POST['em_attributes']) ){
				foreach($_POST['em_attributes'] as $att_key => $att_value ){
					if( (in_array($att_key, $location_available_attributes['names']) || array_key_exists($att_key, $this->location_attributes) ) ){
						$att_vals = count($location_available_attributes['values'][$att_key]);
						if( $att_vals == 0 || ($att_vals > 0 && in_array($att_value, $location_available_attributes['values'][$att_key])) ){
							$this->location_attributes[$att_key] = wp_unslash($att_value);
						}elseif($att_vals > 0){
							$this->location_attributes[$att_key] = wp_unslash(wp_kses($location_available_attributes['values'][$att_key][0], $allowedtags));
						}
					}
				}
			}
		}
		//the line below should be deleted one day and we move validation out of this function, when that happens check otherfunctions like EM_ML_IO::get_post_meta function which force validation again 
		$result = $validate ? $this->validate_meta():true; //post returns null
		$this->compat_keys();
		return apply_filters('em_location_get_post_meta',$result, $this, $validate); //if making a hook, assume that eventually $validate won't be passed on
	}
	
	function validate(){
		$validate_post = true;
		if( empty($this->location_name) ){
			$validate_post = false;
			$this->add_error( __('Location name','events-manager').__(" is required.", 'events-manager') );
		}
		$validate_image = $this->image_validate();
		$validate_meta = $this->validate_meta();
		return apply_filters('em_location_validate', $validate_post && $validate_image && $validate_meta, $this );		
	}
	
	/**
	 * Validates the location. Should be run during any form submission or saving operation.
	 * @return boolean
	 */
	function validate_meta(){
		//check required fields
		foreach ( $this->required_fields as $field => $description) {
			if( $field == 'location_country' && !array_key_exists($this->location_country, em_get_countries()) ){ 
				//country specific checking
				$this->add_error( $this->required_fields['location_country'].__(" is required.", 'events-manager') );				
			}elseif ( $this->$field == "" ) {
				$this->add_error( $description.__(" is required.", 'events-manager') );
			}
		}
		return apply_filters('em_location_validate_meta', ( count($this->errors) == 0 ), $this);
	}
	
	function save(){
		global $wpdb, $current_user, $blog_id, $EM_SAVING_LOCATION;
		$EM_SAVING_LOCATION = true; //this flag prevents our dashboard save_post hooks from going further
		//TODO shuffle filters into right place
		if( get_site_option('dbem_ms_mainblog_locations') ){ self::ms_global_switch(); }
		if( !$this->can_manage('edit_locations', 'edit_others_locations') && !( get_option('dbem_events_anonymous_submissions') && empty($this->location_id)) ){
			return apply_filters('em_location_save', false, $this);
		}
		do_action('em_location_save_pre', $this);
		$post_array = array();
		//Deal with updates to a location
		if( !empty($this->post_id) ){
			//get the full array of post data so we don't overwrite anything.
			if( EM_MS_GLOBAL ){
			    if( !empty($this->blog_id) ){
					$post_array = (array) get_blog_post($this->blog_id, $this->post_id);
			    }else{
			        $post_array = (array) get_blog_post(get_current_site()->blog_id, $this->post_id);
			    }
			}else{
				$post_array = (array) get_post($this->post_id);
			}
		}
		//Overwrite new post info
		$post_array['post_type'] = EM_POST_TYPE_LOCATION;
		$post_array['post_title'] = $this->location_name;
		$post_array['post_content'] = $this->post_content;
		//decide on post status
		if( count($this->errors) == 0 ){
			if( EM_MS_GLOBAL && !is_main_site() && get_site_option('dbem_ms_mainblog_locations') ){
				//if in global ms mode and user is a valid role to publish on their blog, then we will publish the location on the main blog
				restore_current_blog();
				$post_array['post_status'] = $this->can_manage('publish_locations') ? 'publish':'pending'; 
				EM_Object::ms_global_switch(); //switch 'back' to main blog
			}else{
			    $post_array['post_status'] = $this->can_manage('publish_locations') ? 'publish':'pending';
			} 
		}else{
			$post_array['post_status'] = 'draft';
		}
		if( !empty($this->force_status) ){
			$post_array['post_status'] = $this->force_status;
		}
		//Anonymous submission
		if( !is_user_logged_in() && get_option('dbem_events_anonymous_submissions') && empty($this->location_id) ){
			$post_array['post_author'] = get_option('dbem_events_anonymous_user');
			if( !is_numeric($post_array['post_author']) ) $post_array['post_author'] = 0;
		}
		//Save post and continue with meta
		$post_id = wp_insert_post($post_array);
		$post_save = false;
		$meta_save = false;
		if( !is_wp_error($post_id) && !empty($post_id) ){
			$post_save = true;			
			//refresh this event with wp post
			$post_data = get_post($post_id);
			$this->post_id = $post_id;
			$this->location_slug = $post_data->post_name;
			$this->location_owner = $post_data->post_author;
			$this->post_status = $post_data->post_status;
			$this->get_status();
			//save the image, errors here will surface during $this->save_meta()
			$this->image_upload();
			//now save the meta
			$meta_save = $this->save_meta();
		}elseif(is_wp_error($post_id)){
			//location not saved, add an error
			$this->add_error($post_id->get_error_message());
		}
		if( get_site_option('dbem_ms_mainblog_locations') ){ self::ms_global_switch_back(); }
		$return = apply_filters('em_location_save', $post_save && $meta_save, $this );
		$EM_SAVING_LOCATION = false;
		return $return;
	}
	
	function save_meta(){
		//echo "<pre>"; print_r($this); echo "</pre>"; die();
		global $wpdb, $current_user;
		if( $this->can_manage('edit_locations','edit_others_locations') || ( get_option('dbem_events_anonymous_submissions') && empty($this->location_id)) ){
			do_action('em_location_save_meta_pre', $this);
			//Set Blog ID if in multisite mode
			if( EM_MS_GLOBAL && get_site_option('dbem_ms_mainblog_locations') ){
			    $this->blog_id = get_current_site()->blog_id; //global locations restricted to main blog must have main site id
			}elseif( is_multisite() && empty($this->blog_id) ){
				$this->blog_id = get_current_blog_id();
			}
			//Update Post Meta
			foreach( array_keys($this->fields) as $key ){
				if( !in_array($key, $this->post_fields) ){
					update_post_meta($this->post_id, '_'.$key, $this->$key);
				}
			}
			//Update Post Attributes
			foreach($this->location_attributes as $location_attribute_key => $location_attribute){
				update_post_meta($this->post_id, $location_attribute_key, $location_attribute);
			}
			$this->get_status();
			$this->location_status = (count($this->errors) == 0) ? $this->location_status:null; //set status at this point, it's either the current status, or if validation fails, null
			//Save to em_locations table
			$location_array = $this->to_array(true);
			unset($location_array['location_id']);
			//decide whether or not event is private at this point
			$location_array['location_private'] = ( $this->post_status == 'private' ) ? 1:0;
			//check if location truly exists, meaning the location_id is actually a valid location id
			if( !empty($this->location_id) ){
			    if( !empty($this->orphaned_location) && !empty($this->post_id) ){
			    	//we're dealing with an orphaned event in wp_em_locations table, so we want to update the post_id and give it a post parent
			    	$loc_truly_exists = true;
			    }else{
					$loc_truly_exists = $wpdb->get_var('SELECT post_id FROM '.EM_LOCATIONS_TABLE." WHERE location_id={$this->location_id}") == $this->post_id;
			    }
			}else{
				$loc_truly_exists = false;
			}
			//save all the meta
			if( empty($this->location_id) || !$loc_truly_exists ){
				$this->previous_status = 0; //for sure this was previously status 0
				if ( !$wpdb->insert(EM_LOCATIONS_TABLE, $location_array) ){
					$this->add_error( sprintf(__('Something went wrong saving your %s to the index table. Please inform a site administrator about this.','events-manager'),__('location','events-manager')));
				}else{
					//success, so link the event with the post via an event id meta value for easy retrieval
					$this->location_id = $wpdb->insert_id;
					update_post_meta($this->post_id, '_location_id', $this->location_id);
					$this->feedback_message = sprintf(__('Successfully saved %s','events-manager'),__('Location','events-manager'));
				}	
			}else{
				$this->get_previous_status();
				if ( $wpdb->update(EM_LOCATIONS_TABLE, $location_array, array('location_id'=>$this->location_id)) === false ){
					$this->add_error( sprintf(__('Something went wrong updating your %s to the index table. Please inform a site administrator about this.','events-manager'),__('location','events-manager')));			
				}else{
					$this->feedback_message = sprintf(__('Successfully saved %s','events-manager'),__('Location','events-manager'));
					//Also set the status here if status != previous status
					if( $this->previous_status != $this->get_status() ) $this->set_status($this->get_status());
				}
			}
		}else{
			$this->add_error( sprintf(__('You do not have permission to create/edit %s.','events-manager'), __('locations','events-manager')) );
		}
		$this->compat_keys();
		return apply_filters('em_location_save_meta', count($this->errors) == 0, $this);
	}
	
	function delete($force_delete = false){
		$result = false;
		if( $this->can_manage('delete_locations','delete_others_locations') ){
		    if( !is_admin() ){
				include_once('em-location-post-admin.php');
				if( !defined('EM_LOCATION_DELETE_INCLUDE') ){
					EM_Location_Post_Admin::init();
					define('EM_LOCATION_DELETE_INCLUDE',true);
				}
		    }
			do_action('em_location_delete_pre', $this);
			if( $force_delete ){
				$result = wp_delete_post($this->post_id,$force_delete);
			}else{
				$result = wp_trash_post($this->post_id);
				if( !$result && $this->post_status == 'trash' && $this->location_status != -1 ){
				    //we're probably dealing with a trashed post already, which will return a false with wp_trash_post, but the location_status is null from < v5.4.1 so refresh it
				    $this->set_status(-1);
				    $result = true;
				}
			}
			if( !$result && !empty($this->orphaned_location) ){
			    //this is an orphaned event, so the wp delete posts would have never worked, so we just delete the row in our locations table
			    $result = $this->delete_meta();
			}
		}
		return apply_filters('em_location_delete', $result != false, $this);
	}
	
	function delete_meta(){
		global $wpdb;
		$result = false;
		if( $this->can_manage('delete_locations','delete_others_locations') ){
			do_action('em_location_delete_meta_pre', $this);
			$result = $wpdb->query ( $wpdb->prepare("DELETE FROM ". EM_LOCATIONS_TABLE ." WHERE location_id=%d", $this->location_id) );
		}
		return apply_filters('em_location_delete_meta', $result !== false, $this);
	}
	
	function is_published(){
		return apply_filters('em_location_is_published', ($this->post_status == 'publish' || $this->post_status == 'private'), $this);
	}
	
	/**
	 * Change the status of the location. This will save to the Database too. 
	 * @param int $status
	 * @param boolean $set_post_status
	 * @return string
	 */
	function set_status($status, $set_post_status = false){
		global $wpdb;
		if($status === null){ 
			$set_status='NULL'; 
			if($set_post_status){
				$wpdb->update( $wpdb->posts, array( 'post_status' => 'draft' ), array( 'ID' => $this->post_id ) );
			} 
			$this->post_status = 'draft';
		}elseif( $status == -1 ){ //trashed post
			$set_status = -1;
			if($set_post_status){
				$wpdb->update( $wpdb->posts, array( 'post_status' => 'trash' ), array( 'ID' => $this->post_id ) );
			}
			$this->post_status = 'trash'; //set post status in this instance
		}else{
			$set_status = $status ? 1:0;
			$post_status = $set_status ? 'publish':'pending';
			if($set_post_status){
				if($this->post_status == 'pending' && empty($this->post_name)){
					$this->post_name = sanitize_title($this->post_title);
				}
				$wpdb->update( $wpdb->posts, array( 'post_status' => $post_status, 'post_name' => $this->post_name ), array( 'ID' => $this->post_id ) );
			}
			$this->post_status = $post_status;
		}
		$this->previous_status = $wpdb->get_var('SELECT location_status FROM '.EM_LOCATIONS_TABLE.' WHERE location_id='.$this->location_id); //get status from db, not post_status, as posts get saved quickly
		$result = $wpdb->query($wpdb->prepare("UPDATE ".EM_LOCATIONS_TABLE." SET location_status=$set_status, location_slug=%s WHERE location_id=%d", array($this->post_name, $this->location_id)));
		$this->get_status();
		return apply_filters('em_location_set_status', $result !== false, $status, $this);
	}	
	
	function get_status($db = false){
		switch( $this->post_status ){
			case 'private':
				$this->location_private = 1;
				$this->location_status = $status = 1;
				break;
			case 'publish':
				$this->location_private = 0;
				$this->location_status = $status = 1;
				break;
			case 'pending':
				$this->location_private = 0;
				$this->location_status = $status = 0;
				break;
			case 'trash':
				$this->location_private = 0;
				$this->location_status = $status = -1;
				break;
			default: //draft or unknown
				$this->location_private = 0;
				$status = $db ? 'NULL':null;
				$this->location_status = null;
				break;
		}
		return $status;
	}
	
	function get_previous_status( $force = false ){
		global $wpdb;
		if( $this->previous_status === false || $force ){
			$this->previous_status = $wpdb->get_var('SELECT location_status FROM '.EM_LOCATIONS_TABLE.' WHERE location_id='.$this->location_id); //get status from db, not post_status
		}
		return $this->previous_status;
	}
	
	function load_similar($criteria){
		global $wpdb;
		if( !empty($criteria['location_name']) && !empty($criteria['location_name']) && !empty($criteria['location_name']) ){
			$locations_table = EM_LOCATIONS_TABLE; 
			$prepared_sql = $wpdb->prepare("SELECT * FROM $locations_table WHERE location_name = %s AND location_address = %s AND location_town = %s AND location_state = %s AND location_postcode = %s AND location_country = %s", stripcslashes($criteria['location_name']), stripcslashes($criteria['location_address']), stripcslashes($criteria['location_town']), stripcslashes($criteria['location_state']), stripcslashes($criteria['location_postcode']), stripcslashes($criteria['location_country']) );
			//$wpdb->show_errors(true);
			$location = $wpdb->get_row($prepared_sql, ARRAY_A);
			if( is_array($location) ){
				$this->to_object($location);
			}
			return apply_filters('em_location_load_similar', $location, $this);
		}
		return apply_filters('em_location_load_similar', false, $this);
	}
	
	function has_events( $status = 1 ){
		global $wpdb;	
		$events_table = EM_EVENTS_TABLE;
		$sql = $wpdb->prepare("SELECT count(event_id) as events_no FROM $events_table WHERE location_id=%d AND event_status=%d", $this->location_id, $status);
	 	$affected_events = $wpdb->get_var($sql);
		return apply_filters('em_location_has_events', $affected_events > 0, $this);
	}
	
	/**
	 * Can the user manage this location? 
	 */
	function can_manage( $owner_capability = false, $admin_capability = false, $user_to_check = false ){
		if( $this->location_id == '' && !is_user_logged_in() && get_option('dbem_events_anonymous_submissions') ){
			$user_to_check = get_option('dbem_events_anonymous_user');
		}
		if( $admin_capability && EM_MS_GLOBAL && get_site_option('dbem_ms_mainblog_locations') ){
			//if in global mode with locations restricted to main blog, we check capabilities against the main blog
		    self::ms_global_switch();
		    $return = parent::can_manage($owner_capability, $admin_capability, $user_to_check);
		    self::ms_global_switch_back();
		}else{
		    $return = parent::can_manage($owner_capability, $admin_capability, $user_to_check);
		}
		return apply_filters('em_location_can_manage', $return, $this, $owner_capability, $admin_capability, $user_to_check);
	}
	
	function get_permalink(){	
		if( EM_MS_GLOBAL ){
			//if no blog id defined, assume it belongs to the main blog
			$blog_id = empty($this->blog_id) ? get_current_site()->blog_id:$this->blog_id;
			if( get_site_option('dbem_ms_mainblog_locations') ){
				//all locations belong to the main blog
				$link = get_blog_permalink( get_current_site()->blog_id, $this->post_id);
			}elseif( $blog_id != get_current_blog_id() ){
				//decide whether to give a link to the blog the location originates from or to show it on the main site
				if( !get_site_option('dbem_ms_global_locations_links') && is_main_site() && get_option('dbem_locations_page') ){
					//showing subsite locations on main site, create a custom link
					$link = trailingslashit(get_permalink(get_option('dbem_locations_page')).get_site_option('dbem_ms_locations_slug',EM_LOCATION_SLUG).'/'.$this->location_slug.'-'.$this->location_id);
				}else{
					//if location doesn't belong to current blog and/or if main blog doesn't have a locations page, link directly to the blog it belongs to
					$link = get_blog_permalink( $blog_id, $this->post_id);					
				}
			}
		}
		if( empty($link) ){
			$link = get_post_permalink($this->post_id);
		}
		return apply_filters('em_location_get_permalink', $link, $this);	;
	}
	
	function get_ical_url(){
		global $wp_rewrite;
		if( !empty($wp_rewrite) && $wp_rewrite->using_permalinks() ){
			$return = trailingslashit($this->get_permalink()).'ical/';
		}else{
			$return = em_add_get_params($this->get_permalink(), array('ical'=>1));
		}
		return apply_filters('em_location_get_ical_url', $return);
	}
	
	function get_rss_url(){
		global $wp_rewrite;
		if( !empty($wp_rewrite) && $wp_rewrite->using_permalinks() ){
			$return = trailingslashit($this->get_permalink()).'feed/';
		}else{
			$return = em_add_get_params($this->get_permalink(), array('feed'=>1));
		}
		return apply_filters('em_location_get_rss_url', $return);
	}
	
	function get_edit_url(){
		if( $this->can_manage('edit_locations','edit_others_locations') ){
			if( EM_MS_GLOBAL ){
			    global $current_site, $current_blog;
			    if( get_site_option('dbem_ms_mainblog_locations') ){
			        //location stored as post on main blog, but can be edited either in sub-blog admin area or if not on main blog
			        if( get_blog_option($this->blog_id, 'dbem_edit_locations_page') && !is_admin() ){
			        	$link = em_add_get_params(get_blog_permalink($this->blog_id, get_blog_option($this->blog_id, 'dbem_edit_locations_page')), array('action'=>'edit','location_id'=>$this->location_id), false);
			        }
					if( (is_main_site() || empty($link)) && get_blog_option($current_site->blog_id, 'dbem_edit_locations_page') && !is_admin() ){ //if editing on main site and edit page exists, stay on same site
						$link = em_add_get_params(get_blog_permalink(get_option('dbem_edit_locations_page')), array('action'=>'edit','location_id'=>$this->location_id), false);
					}
			        if( empty($link) && !is_main_site() ){
			            $link = get_admin_url($current_blog->blog_id, "edit.php?post_type=event&page=locations&action=edit&location_id={$this->location_id}");
			        }elseif( empty($link) && is_main_site() ){
			            $link = get_admin_url($current_site->blog_id, "post.php?post={$this->post_id}&action=edit");
			        }
			    }else{
			        //location stored as post on blog where location was created
					if( get_blog_option($this->blog_id, 'dbem_edit_locations_page') && !is_admin() ){
						$link = em_add_get_params(get_blog_permalink($this->blog_id, get_blog_option($this->blog_id, 'dbem_edit_locations_page')), array('action'=>'edit','location_id'=>$this->location_id), false);
					}
					if( (is_main_site() || empty($link)) && get_blog_option($current_site->blog_id, 'dbem_edit_locations_page') && !is_admin() ){ //if editing on main site and edit page exists, stay on same site
						$link = em_add_get_params(get_blog_permalink($current_site->blog_id, get_blog_option($current_site->blog_id, 'dbem_edit_locations_page')), array('action'=>'edit','location_id'=>$this->location_id), false);
					}
					if( empty($link)){
						$link = get_admin_url($this->blog_id, "post.php?post={$this->post_id}&action=edit");
					}
			    }
			}else{
				if( get_option('dbem_edit_locations_page') && !is_admin() ){
					$link = em_add_get_params(get_permalink(get_option('dbem_edit_locations_page')), array('action'=>'edit','location_id'=>$this->location_id), false);
				}
				if( empty($link))
					$link = admin_url()."post.php?post={$this->post_id}&action=edit";
			}
			return apply_filters('em_location_get_edit_url', $link, $this);
		}
	}
	
	function output_single($target = 'html'){
		$format = get_option ( 'dbem_single_location_format' );
		return apply_filters('em_location_output_single', $this->output($format, $target), $this, $target);			
	}
	
	function output($format, $target="html") {
		$location_string = $format;
	 	//First let's do some conditional placeholder removals
	 	for ($i = 0 ; $i < EM_CONDITIONAL_RECURSIONS; $i++){ //you can add nested recursions by modifying this setting in your wp_options table
			preg_match_all('/\{([a-zA-Z0-9_]+)\}(.+?)\{\/\1\}/s', $location_string, $conditionals);
			if( count($conditionals[0]) > 0 ){
				//Check if the language we want exists, if not we take the first language there
				foreach($conditionals[1] as $key => $condition){
					$show_condition = false;
					if ($condition == 'has_loc_image'){
						//does this event have an image?
						$show_condition = ( $this->get_image_url() != '' );
					}elseif ($condition == 'no_loc_image'){
						//does this event have an image?
						$show_condition = ( $this->get_image_url() == '' );
					}elseif ($condition == 'has_events'){
						//does this location have any events
						$show_condition = $this->has_events();
					}elseif ($condition == 'no_events'){
						//does this location NOT have any events?
						$show_condition = $this->has_events() == false;
					}
					$show_condition = apply_filters('em_location_output_show_condition', $show_condition, $condition, $conditionals[0][$key], $this); 
					if($show_condition){
						//calculate lengths to delete placeholders
						$placeholder_length = strlen($condition)+2;
						$replacement = substr($conditionals[0][$key], $placeholder_length, strlen($conditionals[0][$key])-($placeholder_length *2 +1));
					}else{
						$replacement = '';
					}
					$location_string = str_replace($conditionals[0][$key], apply_filters('em_location_output_condition', $replacement, $condition, $conditionals[0][$key], $this), $location_string);
				}
			}
	 	}
		//This is for the custom attributes
		preg_match_all('/#_LATT\{([^}]+)\}(\{([^}]+)\})?/', $location_string, $results);
		foreach($results[0] as $resultKey => $result) {
			//Strip string of placeholder and just leave the reference
			$attRef = substr( substr($result, 0, strpos($result, '}')), 7 );
			$attString = '';
			if( is_array($this->location_attributes) && array_key_exists($attRef, $this->location_attributes) && !empty($this->location_attributes[$attRef]) ){
				$attString = $this->location_attributes[$attRef];
			}elseif( !empty($results[3][$resultKey]) ){
				//Check to see if we have a second set of braces;
				$attString = $results[3][$resultKey];
			}
			$attString = apply_filters('em_location_output_placeholder', $attString, $this, $result, $target);
			$location_string = str_replace($result, $attString ,$location_string );
		}
	 	preg_match_all("/(#@?_?[A-Za-z0-9]+)({([^}]+)})?/", $location_string, $placeholders);
	 	$replaces = array();
		foreach($placeholders[1] as $key => $result) {
			$replace = '';
			$full_result = $placeholders[0][$key];
			switch( $result ){
				case '#_LOCATIONID':
					$replace = $this->location_id;
					break;
				case '#_LOCATIONPOSTID':
					$replace = $this->post_id;
					break;
				case '#_NAME': //Depricated
				case '#_LOCATION': //Depricated
				case '#_LOCATIONNAME':
					$replace = $this->location_name;
					break;
				case '#_ADDRESS': //Depricated
				case '#_LOCATIONADDRESS': 
					$replace = $this->location_address;
					break;
				case '#_TOWN': //Depricated
				case '#_LOCATIONTOWN':
					$replace = $this->location_town;
					break;
				case '#_LOCATIONSTATE':
					$replace = $this->location_state;
					break;
				case '#_LOCATIONPOSTCODE':
					$replace = $this->location_postcode;
					break;
				case '#_LOCATIONREGION':
					$replace = $this->location_region;
					break;
				case '#_LOCATIONCOUNTRY':
					$replace = $this->get_country();
					break;
				case '#_LOCATIONFULLLINE':
				case '#_LOCATIONFULLBR':
					$glue = $result == '#_LOCATIONFULLLINE' ? ', ':'<br />';
					$replace = $this->get_full_address($glue);
					break;
				case '#_MAP': //Depricated (but will remain)
				case '#_LOCATIONMAP':
					ob_start();
					$args = array();
				    if( !empty($placeholders[3][$key]) ){
				        $dimensions = explode(',', $placeholders[3][$key]);
				        if(!empty($dimensions[0])) $args['width'] = $dimensions[0];
				        if(!empty($dimensions[1])) $args['height'] = $dimensions[1];
				    }
					$template = em_locate_template('placeholders/locationmap.php', true, array('args'=>$args,'EM_Location'=>$this));
					$replace = ob_get_clean();	
					break;
				case '#_LOCATIONLONGITUDE':
					$replace = $this->location_longitude;
					break;
				case '#_LOCATIONLATITUDE':
					$replace = $this->location_latitude;
					break;
				case '#_DESCRIPTION':  //Depricated
				case '#_EXCERPT': //Depricated
				case '#_LOCATIONNOTES':
				case '#_LOCATIONEXCERPT':	
					$replace = $this->post_content;
					if($result == "#_EXCERPT" || $result == "#_LOCATIONEXCERPT"){
						if( !empty($this->post_excerpt) ){
							$replace = $this->post_excerpt;
						}else{
						    $excerpt_length = 55;
							$excerpt_more = apply_filters('em_excerpt_more', ' ' . '[...]');
						    if( !empty($placeholders[3][$key]) ){
						        $trim = true;
						        $ph_args = explode(',', $placeholders[3][$key]);
						        if( is_numeric($ph_args[0]) ) $excerpt_length = $ph_args[0];
						        if( !empty($ph_args[1]) ) $excerpt_more = $ph_args[1];
						    }
							if ( preg_match('/<!--more(.*?)?-->/', $replace, $matches) ) {
								$content = explode($matches[0], $replace, 2);
								$replace = force_balance_tags($content[0]);
							}
							if( !empty($trim) ){
							    //shorten content by supplied number - copied from wp_trim_excerpt
							    $replace = strip_shortcodes( $replace );
							    $replace = str_replace(']]>', ']]&gt;', $replace);
							    $replace = wp_trim_words( $replace, $excerpt_length, $excerpt_more );
							}
						}
					}
					break;
				case '#_LOCATIONIMAGEURL':
				case '#_LOCATIONIMAGE':
	        		if($this->get_image_url() != ''){
	        			$image_url = esc_url($this->get_image_url());
	        			if($result == '#_LOCATIONIMAGEURL'){
		        			$replace =  $this->get_image_url();
						}else{
							if( empty($placeholders[3][$key]) ){
								$replace = "<img src='".$image_url."' alt='".esc_attr($this->location_name)."'/>";
							}else{
								$image_size = explode(',', $placeholders[3][$key]);
								if( self::array_is_numeric($image_size) && count($image_size) > 1 ){
								    if( EM_MS_GLOBAL && get_current_blog_id() != $this->blog_id ){
    								    //get a thumbnail
    								    if( get_option('dbem_disable_thumbnails') ){
        								    $image_attr = '';
        								    $image_args = array();
        								    if( empty($image_size[1]) && !empty($image_size[0]) ){    
        								        $image_attr = 'width="'.$image_size[0].'"';
        								        $image_args['w'] = $image_size[0];
        								    }elseif( empty($image_size[0]) && !empty($image_size[1]) ){
        								        $image_attr = 'height="'.$image_size[1].'"';
        								        $image_args['h'] = $image_size[1];
        								    }elseif( !empty($image_size[0]) && !empty($image_size[1]) ){
        								        $image_attr = 'width="'.$image_size[0].'" height="'.$image_size[1].'"';
        								        $image_args = array('w'=>$image_size[0], 'h'=>$image_size[1]);
        								    }
    								        $replace = "<img src='".esc_url(em_add_get_params($image_url, $image_args))."' alt='".esc_attr($this->location_name)."' $image_attr />";
    								    }else{
    								        //location belongs to another blog, so switch blog then call the default wp fucntion
        								    if( EM_MS_GLOBAL && get_current_blog_id() != $this->blog_id ){
        								        switch_to_blog($this->blog_id);
        								        $switch_back = true;
        								    }
    								        $replace = get_the_post_thumbnail($this->ID, $image_size);
    								        if( !empty($switch_back) ){ restore_current_blog(); }
    								    }
								    }else{
								    	$replace = get_the_post_thumbnail($this->ID, $image_size);
								    }
								}else{
									$replace = "<img src='".$image_url."' alt='".esc_attr($this->location_name)."'/>";
								}
							}
						}
	        		}
					break;
				case '#_LOCATIONURL':
				case '#_LOCATIONLINK':
				case '#_LOCATIONPAGEURL': //Depricated
					$link = esc_url($this->get_permalink());
					$replace = ($result == '#_LOCATIONURL' || $result == '#_LOCATIONPAGEURL') ? $link : '<a href="'.$link.'">'.esc_html($this->location_name).'</a>';
					break;
				case '#_LOCATIONEDITURL':
				case '#_LOCATIONEDITLINK':
				    if( $this->can_manage('edit_locations','edit_others_locations') ){
						$link = esc_url($this->get_edit_url());
						$replace = ($result == '#_LOCATIONEDITURL') ? $link : '<a href="'.$link.'" title="'.esc_attr($this->location_name).'">'.esc_html(sprintf(__('Edit Location','events-manager'))).'</a>';
				    }
					break;
				case '#_LOCATIONICALURL':
				case '#_LOCATIONICALLINK':
					$replace = $this->get_ical_url();
					if( $result == '#_LOCATIONICALLINK' ){
						$replace = '<a href="'.esc_url($replace).'">iCal</a>';
					}
					break;
				case '#_LOCATIONRSSURL':
				case '#_LOCATIONRSSLINK':
					$replace = $this->get_rss_url();
					if( $result == '#_LOCATIONRSSLINK' ){
						$replace = '<a href="'.esc_url($replace).'">RSS</a>';
					}
					break;
				case '#_PASTEVENTS': //Depricated
				case '#_LOCATIONPASTEVENTS':
				case '#_NEXTEVENTS': //Depricated
				case '#_LOCATIONNEXTEVENTS':
				case '#_ALLEVENTS': //Depricated
				case '#_LOCATIONALLEVENTS':
					//TODO: add limit to lists of events
					//convert deprecated placeholders for compatability
					$result = ($result == '#_PASTEVENTS') ? '#_LOCATIONPASTEVENTS':$result; 
					$result = ($result == '#_NEXTEVENTS') ? '#_LOCATIONNEXTEVENTS':$result;
					$result = ($result == '#_ALLEVENTS') ? '#_LOCATIONALLEVENTS':$result;
					//forget it ever happened? :/
					if ( $result == '#_LOCATIONPASTEVENTS'){ $scope = 'past'; }
					elseif ( $result == '#_LOCATIONNEXTEVENTS' ){ $scope = 'future'; }
					else{ $scope = 'all'; }
					$events_count = EM_Events::count( array('location'=>$this->location_id, 'scope'=>$scope) );
					if ( $events_count > 0 ){
					    $args = array('location'=>$this->location_id, 'scope'=>$scope, 'pagination'=>1, 'ajax'=>0);
					    $args['format_header'] = get_option('dbem_location_event_list_item_header_format');
					    $args['format_footer'] = get_option('dbem_location_event_list_item_footer_format');
					    $args['format'] = get_option('dbem_location_event_list_item_format');
						$args['limit'] = get_option('dbem_location_event_list_limit');
						$args['page'] = (!empty($_REQUEST['pno']) && is_numeric($_REQUEST['pno']) )? $_REQUEST['pno'] : 1;
					    $replace = EM_Events::output($args);
					} else {
						$replace = get_option('dbem_location_no_events_message');
					}
					break;
				case '#_LOCATIONNEXTEVENT':
					$events = EM_Events::get( array('location'=>$this->location_id, 'scope'=>'future', 'limit'=>1, 'orderby'=>'event_start_date,event_start_time') );
					$replace = get_option('dbem_location_no_event_message');
					foreach($events as $EM_Event){
						$replace = $EM_Event->output(get_option('dbem_location_event_single_format'));
					}
					break;
				default:
					$replace = $full_result;
					break;
			}
			$replaces[$full_result] = apply_filters('em_location_output_placeholder', $replace, $this, $full_result, $target);
		}
		//sort out replacements so that during replacements shorter placeholders don't overwrite longer varieties.
		krsort($replaces);
		foreach($replaces as $full_result => $replacement){
			if( !in_array($full_result, array('#_DESCRIPTION','#_LOCATIONNOTES')) ){
				$location_string = str_replace($full_result, $replacement , $location_string );
			}else{
				$desc_replace[$full_result] = $replacement;
			}
		}
		
		//Finally, do the location notes, so that previous placeholders don't get replaced within the content, which may use shortcodes
		if( !empty($desc_replace) ){
			foreach($desc_replace as $full_result => $replacement){
				$location_string = str_replace($full_result, $replacement , $location_string );
			}
		}
		
		return apply_filters('em_location_output', $location_string, $this, $format, $target);	
	}
	
	function get_country(){
		$countries = em_get_countries();
		if( !empty($countries[$this->location_country]) ){
			return apply_filters('em_location_get_country', $countries[$this->location_country], $this);
		}
		return apply_filters('em_location_get_country', false, $this);
			
	}
	
	function get_full_address($glue = ', '){
		$location_array = array();
		if( !empty($this->location_address) ) $location_array[] = $this->location_address;
		if( !empty($this->location_town) ) $location_array[] = $this->location_town;
		if( !empty($this->location_state) ) $location_array[] = $this->location_state;
		if( !empty($this->location_postcode) ) $location_array[] = $this->location_postcode;
		if( !empty($this->location_region) ) $location_array[] = $this->location_region;
		return implode($glue, $location_array);
	}
}