<?php
/**
 * Order
 * 
 * The WooCommerce order class handles order data.
 *
 * @class Woocommerce_Order
 * @package		WooCommerce
 * @category	Class
 * @author		WooThemes
 */
class Woocommerce_Order {
	
	var $id;
	var $status;
	var $order_date;
	var $modified_date;
	var $customer_note;
	var $order_custom_fields;
	var $order_key;
	var $billing_first_name;
	var $billing_last_name;
	var $billing_company;
	var $billing_address_1;
	var $billing_address_2;
	var $billing_city;
	var $billing_postcode;
	var $billing_country;
	var $billing_state;
	var $billing_email;
	var $billing_phone;
	var $shipping_first_name;
	var $shipping_last_name;
	var $shipping_company;
	var $shipping_address_1;
	var $shipping_address_2;
	var $shipping_city;
	var $shipping_postcode;
	var $shipping_country;
	var $shipping_state;
	var $shipping_method;
	var $shipping_method_title;
	var $payment_method;
	var $payment_method_title;
	var $order_discount;
	var $cart_discount;
	var $order_tax;
	var $order_shipping;
	var $order_shipping_tax;
	var $order_total;
	var $items;
	var $taxes;
	var $customer_user;
	var $user_id;
	var $completed_date;
	var $billing_address;
	var $formatted_billing_address;
	var $shipping_address;
	var $formatted_shipping_address;
	
	/** Get the order if ID is passed, otherwise the order is new and empty */
	function woocommerce_order( $id = '' ) {
		$this->prices_include_tax = (get_option('woocommerce_prices_include_tax')=='yes') ? true : false;
		$this->display_totals_ex_tax = (get_option('woocommerce_display_totals_excluding_tax')=='yes') ? true : false;
		$this->display_cart_ex_tax = (get_option('woocommerce_display_cart_prices_excluding_tax')=='yes') ? true : false;
		if ($id>0) $this->get_order( $id );
	}
	
	/** Gets an order from the database */
	function get_order( $id = 0 ) {
		if (!$id) return false;
		if ($result = get_post( $id )) : 	 	  	 	
			$this->populate( $result );	 	 	 	 	 	
			return true;
		endif;
		return false;
	}
	
	/** Populates an order from the loaded post data */
	function populate( $result ) {
		// Standard post data
		$this->id = $result->ID; 
		$this->order_date = $result->post_date;
		$this->modified_date = $result->post_modified;	
		$this->customer_note = $result->post_excerpt;
		$this->order_custom_fields = get_post_custom( $this->id );
		
		// Define the data we're going to load: Key => Default value
		$load_data = apply_filters('woocommerce_load_order_data', array(
			'order_key'				=> '',
			'billing_first_name'	=> '',
			'billing_last_name' 	=> '',
			'billing_company'		=> '',
			'billing_address_1'		=> '',
			'billing_address_2'		=> '',
			'billing_city'			=> '',
			'billing_postcode'		=> '',
			'billing_country'		=> '',
			'billing_state' 		=> '',
			'billing_email'			=> '',
			'billing_phone'			=> '',
			'shipping_first_name'	=> '',
			'shipping_last_name'	=> '',
			'shipping_company'		=> '',
			'shipping_address_1'	=> '',
			'shipping_address_2'	=> '',
			'shipping_city'			=> '',
			'shipping_postcode'		=> '',
			'shipping_country'		=> '',
			'shipping_state'		=> '',
			'shipping_method'		=> '',
			'shipping_method_title'	=> '',
			'payment_method'		=> '',
			'payment_method_title' 	=> '',
			'order_discount'		=> '',
			'cart_discount'			=> '',
			'order_tax'				=> '',
			'order_shipping'		=> '',
			'order_shipping_tax'	=> '',
			'order_total'			=> '',
			'customer_user'			=> '',
			'completed_date'		=> $this->modified_date
		));
		
		// Load the data from the custom fields
		foreach ($load_data as $key => $default) :
			if (isset($this->order_custom_fields[ '_' . $key ][0]) && $this->order_custom_fields[ '_' . $key ][0]!=='') :
				$this->$key = $this->order_custom_fields[ '_' . $key ][0];
			else :
				$this->$key = $default;
			endif;
		endforeach;
		
		// Aliases
		$this->user_id = (int) $this->customer_user;
		
		// Get status
		$terms = wp_get_object_terms( $this->id, 'shop_order_status', array('fields' => 'slugs') );
		$this->status = (isset($terms[0])) ? $terms[0] : 'pending';
	}
	
	function get_formatted_billing_address() {
		if (!$this->formatted_billing_address) :
			global $woocommerce;
			
			// Formatted Addresses
			$address = array(
				'first_name' 	=> $this->billing_first_name,
				'last_name'		=> $this->billing_last_name,
				'company'		=> $this->billing_company,
				'address_1'		=> $this->billing_address_1,
				'address_2'		=> $this->billing_address_2,
				'city'			=> $this->billing_city,		
				'state'			=> $this->billing_state,
				'postcode'		=> $this->billing_postcode,
				'country'		=> $this->billing_country
			);
	
			$this->formatted_billing_address = $woocommerce->countries->get_formatted_address( $address );
		endif;
		return $this->formatted_billing_address;
	}
	
	function get_billing_address() {
		if (!$this->billing_address) :
			// Formatted Addresses
			$address = array(
				'address_1'		=> $this->billing_address_1,
				'address_2'		=> $this->billing_address_2,
				'city'			=> $this->billing_city,		
				'state'			=> $this->billing_state,
				'postcode'		=> $this->billing_postcode,
				'country'		=> $this->billing_country
			);
			$joined_address = array();
			foreach ($address as $part) if (!empty($part)) $joined_address[] = $part;
			$this->billing_address = implode(', ', $joined_address);
		endif;
		return $this->billing_address;
	}
	
	function get_formatted_shipping_address() {
		if (!$this->formatted_shipping_address) :
			if ($this->shipping_address_1) :
				global $woocommerce;
				
				// Formatted Addresses
				$address = array(
					'first_name' 	=> $this->shipping_first_name,
					'last_name'		=> $this->shipping_last_name,
					'company'		=> $this->shipping_company,
					'address_1'		=> $this->shipping_address_1,
					'address_2'		=> $this->shipping_address_2,
					'city'			=> $this->shipping_city,		
					'state'			=> $this->shipping_state,
					'postcode'		=> $this->shipping_postcode,
					'country'		=> $this->shipping_country
				);
		
				$this->formatted_shipping_address = $woocommerce->countries->get_formatted_address( $address );
			endif;
		endif;
		return $this->formatted_shipping_address;
	}
	
	function get_shipping_address() {
		if (!$this->shipping_address) :
			if ($this->shipping_address_1) :
				// Formatted Addresses
				$address = array(
					'address_1'		=> $this->shipping_address_1,
					'address_2'		=> $this->shipping_address_2,
					'city'			=> $this->shipping_city,		
					'state'			=> $this->shipping_state,
					'postcode'		=> $this->shipping_postcode,
					'country'		=> $this->shipping_country
				);
				$joined_address = array();
				foreach ($address as $part) if (!empty($part)) $joined_address[] = $part;
				$this->shipping_address = implode(', ', $joined_address);
			endif;
		endif;
		return $this->shipping_address;
	}
	
	function get_items() {
		if (!$this->items) :
			$this->items = isset( $this->order_custom_fields['_order_items'][0] ) ? maybe_unserialize( $this->order_custom_fields['_order_items'][0] ) : array();
		endif;
		return $this->items;
	}
	
	function get_taxes() {
		if (!$this->taxes) :
			$this->taxes = isset( $this->order_custom_fields['_order_taxes'][0] ) ? maybe_unserialize( $this->order_custom_fields['_order_taxes'][0] ) : array();
		endif;
		return $this->taxes;
	}
	
	/** Gets shipping and product tax */
	function get_total_tax() {
		return $this->order_tax + $this->order_shipping_tax;
	}
	
	/**
	 * gets the total (product) discount amount - these are applied before tax
	 */
	function get_cart_discount() {
		return $this->cart_discount; 
	}
	
	/**
	 * gets the total (product) discount amount - these are applied before tax
	 */
	function get_order_discount() {
		return $this->order_discount; 
	}
	
	/**
	 * gets the total discount amount - both kinds
	 */
	function get_total_discount() {
		if ($this->order_discount || $this->cart_discount) :
			return $this->order_discount + $this->cart_discount; 
		endif;
	}
	
	/** Gets shipping */
	function get_shipping() {
		return $this->order_shipping;
	}
	
	/** Gets order total */
	function get_order_total() {
		return $this->order_total;
	}
	
	
	/** Get item subtotal - this is the cost before discount */
	function get_item_subtotal( $item, $inc_tax = false ) {
		if ($inc_tax) :
			return number_format( ( $item['line_subtotal'] + $item['line_subtotal_tax'] / $item['qty'] ) , 2, '.', '');
		else :
			return number_format( ( $item['line_subtotal'] / $item['qty'] ), 2, '.', '');
		endif;
	}
	
	/** Get line subtotal - this is the cost before discount */
	function get_line_subtotal( $item, $inc_tax = false ) {
		if ($inc_tax) :
			return number_format( $item['line_subtotal'] + $item['line_subtotal_tax'], 2, '.', '');
		else :
			return number_format( $item['line_subtotal'], 2, '.', '');
		endif;
	}
	
	/** Calculate item cost - useful for gateways */
	function get_item_total( $item, $inc_tax = false ) {
		if ($inc_tax) :
			return number_format( ( ( $item['line_total'] + $item['line_tax'] ) / $item['qty'] ), 2, '.', '');
		else :
			return number_format( $item['line_total'] / $item['qty'] , 2, '.', '');
		endif;
	}
	
	/** Calculate line total - useful for gateways */
	function get_line_total( $item, $inc_tax = false ) {
		if ($inc_tax) :
			return number_format( $item['line_total'] + $item['line_tax'] , 2, '.', '');
		else :
			return number_format( $item['line_total'] , 2, '.', '');
		endif;
	}
	
	/** Gets line subtotal - formatted for display */
	function get_formatted_line_subtotal( $item ) {
		$subtotal = 0;
		
		if (!isset($item['line_subtotal']) || !isset($item['line_subtotal_tax'])) return;
		
		if ($this->display_cart_ex_tax || !$this->prices_include_tax) :	
			if ($this->prices_include_tax) $ex_tax_label = 1; else $ex_tax_label = 0;
			$subtotal = woocommerce_price( $this->get_line_subtotal( $item ), array('ex_tax_label' => $ex_tax_label ));
		else :
			$subtotal = woocommerce_price( $this->get_line_subtotal( $item, true ) );
		endif;
		return $subtotal;
	}
	
	/** Gets subtotal - subtotal is shown before discounts, but with localised taxes */
	function get_subtotal_to_display( $compound = false ) {
		global $woocommerce;
		
		$subtotal = 0;
		
		if ( !$compound ) :

			foreach ($this->get_items() as $item) :
				
				if (!isset($item['line_subtotal']) || !isset($item['line_subtotal_tax'])) return;
				
				$subtotal += $this->get_line_subtotal( $item );
				
				if (!$this->display_cart_ex_tax) :
					$subtotal += $item['line_subtotal_tax'];
				endif;

			endforeach;
			
			$subtotal = woocommerce_price($subtotal);
			
			if ($this->display_cart_ex_tax && $this->prices_include_tax) :	
				$subtotal .= ' <small>'.$woocommerce->countries->ex_tax_or_vat().'</small>';
			endif;
		
		else :
			
			if ($this->prices_include_tax) return;
			
			foreach ($this->get_items() as $item) :
				
				$subtotal += $item['line_subtotal'];
			
			endforeach;
			
			// Add Shipping Costs
			$subtotal += $this->get_shipping();
		
			// Remove non-compound taxes
			foreach ($this->get_taxes() as $tax) :
				
				if (isset($tax['compound']) && $tax['compound']) continue;
				
				$subtotal = $subtotal + $tax['total'];
			
			endforeach;
			
			$subtotal = woocommerce_price($subtotal);

		endif;
		
		return $subtotal;
	}

	/** Gets shipping (formatted) */
	function get_shipping_to_display() {
		global $woocommerce;
		
		if ($this->order_shipping > 0) :
			
			$tax_text = '';
			
			if ($this->display_totals_ex_tax || !$this->prices_include_tax) :

				// Show shipping excluding tax
				$shipping = woocommerce_price($this->order_shipping);
				if ($this->order_shipping_tax > 0 && $this->prices_include_tax) :
					$tax_text = $woocommerce->countries->ex_tax_or_vat() . ' '; 
				endif;
			
			else :
			
				// Show shipping including tax
				$shipping = woocommerce_price($this->order_shipping + $this->order_shipping_tax);
				if ($this->order_shipping_tax > 0 && !$this->prices_include_tax) :
					$tax_text = $woocommerce->countries->inc_tax_or_vat() . ' '; 
				endif;
			
			endif;
			
			$shipping .= sprintf(__(' <small>%svia %s</small>', 'woocommerce'), $tax_text, ucwords($this->shipping_method_title));
			
		else :
			$shipping = __('Free!', 'woocommerce');
		endif;
		
		return $shipping;
	}
	
	/** Get a product (either product or variation) */
	function get_product_from_item( $item ) {
		
		if (isset($item['variation_id']) && $item['variation_id']>0) :
			$_product = new Woocommerce_Product_Variation( $item['variation_id'] );
		else :
			$_product = new Woocommerce_Product( $item['id'] );
		endif;
		
		return $_product;

	}
	
	/** Get totals for display on pages and in emails */
	function get_order_item_totals() {
		global $woocommerce;
		
		$total_rows = array();
		
		if ($subtotal = $this->get_subtotal_to_display())
			$total_rows[ __('Cart Subtotal:', 'woocommerce') ] = $subtotal;
		
		if ($this->get_cart_discount() > 0) 
			$total_rows[ __('Cart Discount:', 'woocommerce') ] = woocommerce_price($this->get_cart_discount());
		
		if ($this->get_shipping() > 0)
			$total_rows[ __('Shipping:', 'woocommerce') ] = $this->get_shipping_to_display();
		
		if ($this->get_total_tax() > 0) :
			
			if ( sizeof($this->get_taxes()) > 0 ) :
			
				$has_compound_tax = false;
				
				foreach ($this->get_taxes() as $tax) : 
					if ($tax['compound']) : $has_compound_tax = true; continue; endif;
					if ($tax['total']==0) continue;
					$total_rows[ $tax['label'] ] = woocommerce_price( $tax['total'] );
				endforeach;
				
				if ($has_compound_tax) :
					if ($subtotal = $this->get_subtotal_to_display( true )) :
						$total_rows[ __('Subtotal:', 'woocommerce') ] = $subtotal;
					endif;
				endif;
				
				foreach ($this->get_taxes() as $tax) : 
					if (!$tax['compound']) continue;
					if ($tax['total']==0) continue;
					$total_rows[ $tax['label'] ] = woocommerce_price( $tax['total'] );
				endforeach;
			
			else :
			
				$total_rows[ $woocommerce->countries->tax_or_vat() ] = woocommerce_price($this->get_total_tax());
			
			endif;
			
		endif;
		
		if ($this->get_order_discount() > 0)
			$total_rows[ __('Order Discount:', 'woocommerce') ] = woocommerce_price($this->get_order_discount());
		
		$total_rows[ __('Order Total:', 'woocommerce') ] = woocommerce_price($this->get_order_total());
		
		return apply_filters('woocommerce_get_order_item_totals', $total_rows, $this);
	}
	
	/** Output items for display in html emails */
	function email_order_items_table( $show_download_links = false, $show_sku = false ) {

		$return = '';
		
		foreach($this->get_items() as $item) : 
			
			$_product = $this->get_product_from_item( $item );
			
			$file = $sku = $variation = '';
			
			if ($show_sku) :
				$sku = ' (#' . $_product->sku . ')';
			endif;
			
			$item_meta = new order_item_meta( $item['item_meta'] );					
			$variation = '<br/><small>' . $item_meta->display( true, true ) . '</small>';
			
			if ($show_download_links) :
				
				if ($_product->exists) :
			
					if ($_product->is_downloadable()) :
						$file = '<br/><small>'.__('Download:', 'woocommerce').' <a href="' . $this->get_downloadable_file_url( $item['id'], $item['variation_id'] ) . '">' . $this->get_downloadable_file_url( $item['id'], $item['variation_id'] ) . '</a></small>';
					endif;
		
				endif;	
					
			endif;
			
			$return .= '<tr>
				<td style="text-align:left; border: 1px solid #eee;">' . apply_filters('woocommerce_order_product_title', $item['name'], $_product) . $sku . $file . $variation . '</td>
				<td style="text-align:left; border: 1px solid #eee;">'.$item['qty'].'</td>
				<td style="text-align:left; border: 1px solid #eee;">';
					
					if ( $this->display_cart_ex_tax || !$this->prices_include_tax ) :	
						$ex_tax_label = ( $this->prices_include_tax ) ? 1 : 0;
						$return .= woocommerce_price( $this->get_line_subtotal( $item ), array('ex_tax_label' => $ex_tax_label ));
					else :
						$return .= woocommerce_price( $this->get_line_subtotal( $item, true ) );
					endif;
			
			$return .= '	
				</td>
			</tr>';
			
		endforeach;	
		
		return $return;	
		
	}
	
	/**  Returns true if the order contains a downloadable product */
	function has_downloadable_item() {
		$has_downloadable_item = false;
		
		foreach($this->get_items() as $item) : 
			
			$_product = $this->get_product_from_item( $item );

			if ($_product->exists && $_product->is_downloadable()) :
				$has_downloadable_item = true;
			endif;
			
		endforeach;	
		
		return $has_downloadable_item;
	}
	
	/**  Generates a URL so that a customer can checkout/pay for their (unpaid - pending) order via a link */
	function get_checkout_payment_url() {
		
		$payment_page = get_permalink(woocommerce_get_page_id('pay'));
		
		if (get_option('woocommerce_force_ssl_checkout')=='yes' || is_ssl()) $payment_page = str_replace('http:', 'https:', $payment_page);
	
		return apply_filters('woocommerce_get_checkout_payment_url', add_query_arg('pay_for_order', 'true', add_query_arg('order', $this->order_key, add_query_arg('order_id', $this->id, $payment_page))));
	}
	
	
	/** Generates a URL so that a customer can cancel their (unpaid - pending) order */
	function get_cancel_order_url() {
		global $woocommerce;
		return apply_filters('woocommerce_get_cancel_order_url', $woocommerce->nonce_url( 'cancel_order', add_query_arg('cancel_order', 'true', add_query_arg('order', $this->order_key, add_query_arg('order_id', $this->id, trailingslashit( home_url() ))))));
	}
	
	
	/** Gets a downloadable products file url */
	function get_downloadable_file_url( $item_id, $variation_id ) {
	 	
	 	$download_id = ($variation_id>0) ? $variation_id : $item_id;
	 	
	 	$user_email = $this->billing_email;
				
		if ($this->user_id>0) :
			$user_info = get_userdata($this->user_id);
			if ($user_info->user_email) :
				$user_email = $user_info->user_email;
			endif;
		endif;
				
	 	return add_query_arg('download_file', $download_id, add_query_arg('order', $this->order_key, add_query_arg('email', $user_email, trailingslashit( home_url() ))));
	 }
	 
	/**
	 * Adds a note (comment) to the order
	 *
	 * @param   string	$note		Note to add
	 * @param   int		$is_customer_note	Is this a note for the customer?
	 */
	function add_order_note( $note, $is_customer_note = 0 ) {
		
		$comment_post_ID = $this->id;
		$comment_author = 'WooCommerce';
		$comment_author_email = 'woocommerce@' . str_replace('www.', '', str_replace('http://', '', site_url()));
		$comment_author_url = '';
		$comment_content = $note;
		$comment_type = '';
		$comment_parent = 0;
		
		$commentdata = compact('comment_post_ID', 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_content', 'comment_type', 'comment_parent', 'user_ID');
		
		$commentdata['comment_author_IP'] = preg_replace( '/[^0-9a-fA-F:., ]/', '', $_SERVER['REMOTE_ADDR'] );
		$commentdata['comment_agent']     = substr($_SERVER['HTTP_USER_AGENT'], 0, 254);
	
		$commentdata['comment_date']     = current_time('mysql');
		$commentdata['comment_date_gmt'] = current_time('mysql', 1);
	
		$comment_id = wp_insert_comment( $commentdata );
		
		add_comment_meta($comment_id, 'is_customer_note', $is_customer_note);
		
		if ($is_customer_note) :
			do_action( 'woocommerce_new_customer_note', array( 'order_id' => $this->id, 'customer_note' => $note ) );
		endif;
		
		return $comment_id;
		
	}

	/**
	 * Adds a note (comment) to the order
	 *
	 * @param   string	$new_status		Status to change the order to
	 * @param   string	$note			Optional note to add
	 */
	function update_status( $new_status, $note = '' ) {
		
		if ($note) $note .= ' ';
	
		$new_status = get_term_by( 'slug', sanitize_title( $new_status ), 'shop_order_status');
		if ($new_status) :
		
			wp_set_object_terms($this->id, $new_status->slug, 'shop_order_status');
			
			if ( $this->status != $new_status->slug ) :
				// Status was changed
				do_action( 'woocommerce_order_status_'.$new_status->slug, $this->id );
				do_action( 'woocommerce_order_status_'.$this->status.'_to_'.$new_status->slug, $this->id );
				$this->add_order_note( $note . sprintf( __('Order status changed from %s to %s.', 'woocommerce'), $this->status, $new_status->slug ) );
				clean_term_cache( '', 'shop_order_status' );
				
				// Date
				if ($new_status->slug=='completed') :
					update_post_meta( $this->id, '_completed_date', current_time('mysql') );
				endif;
				
				// Sales
				if ($this->status == 'on-hold' && ($new_status->slug=='processing' || $new_status->slug=='completed')) :
					$this->record_product_sales();
				endif;
				
			endif;
		
		endif;
		
	}
	
	/**
	 * Cancel the order and restore the cart (before payment)
	 *
	 * @param   string	$note	Optional note to add
	 */
	function cancel_order( $note = '' ) {
		
		unset($_SESSION['order_awaiting_payment']);
		
		$this->update_status('cancelled', $note);
		
	}

	/**
	 * When a payment is complete this function is called
	 *
	 * Most of the time this should mark an order as 'processing' so that admin can process/post the items
	 * If the cart contains only downloadable items then the order is 'complete' since the admin needs to take no action
	 * Stock levels are reduced at this point
	 * Sales are also recorded for products
	 */
	function payment_complete() {
		
		unset($_SESSION['order_awaiting_payment']);
		
		if ( $this->status=='on-hold' || $this->status=='pending' || $this->status=='failed' ) :
		
			$downloadable_order = false;
			
			if (sizeof($this->get_items())>0) foreach ($this->get_items() as $item) :
			
				if ($item['id']>0) :
				
					$_product = $this->get_product_from_item( $item );
					
					if ( $_product->exists && $_product->is_downloadable() && $_product->is_virtual() ) :
						$downloadable_order = true;
						continue;
					endif;
					
				endif;
				
				$downloadable_order = false;
				break;
			
			endforeach;
			
			if ($downloadable_order) :
				$new_order_status = 'completed';
			else :
				$new_order_status = 'processing';
			endif;
			
			$new_order_status = apply_filters('woocommerce_payment_complete_order_status', $new_order_status, $this->id);
			
			$this->update_status($new_order_status);
			
			// Payment is complete so reduce stock levels
			$this->reduce_order_stock();
			
			do_action( 'woocommerce_payment_complete', $this->id );
		
		endif;
	}
	
	/**
	 * Record sales
	 */
	function record_product_sales() {
		
		if ( get_post_meta( $this->id, '_recorded_sales', true )=='yes' ) return;
		
		if (sizeof($this->get_items())>0) foreach ($this->get_items() as $item) :
			if ($item['id']>0) :
				$sales 	= (int) get_post_meta( $item['id'], 'total_sales', true );
				$sales += (int) $item['qty'];
				if ($sales) update_post_meta( $item['id'], 'total_sales', $sales );
			endif;
		endforeach;
		
		update_post_meta( $this->id, '_recorded_sales', 'yes' );
		
	}
	
	/**
	 * Reduce stock levels
	 */
	function reduce_order_stock() {
		
		if (get_option('woocommerce_manage_stock')=='yes' && sizeof($this->get_items())>0) :
		
			// Reduce stock levels and do any other actions with products in the cart
			foreach ($this->get_items() as $item) :
			
				if ($item['id']>0) :
					$_product = $this->get_product_from_item( $item );
					
					if ( $_product && $_product->exists && $_product->managing_stock() ) :
					
						$old_stock = $_product->stock;
						
						$new_quantity = $_product->reduce_stock( $item['qty'] );
						
						$this->add_order_note( sprintf( __('Item #%s stock reduced from %s to %s.', 'woocommerce'), $item['id'], $old_stock, $new_quantity) );
							
						if ($new_quantity<0) :
							do_action('woocommerce_product_on_backorder', array( 'product' => $_product, 'order_id' => $this->id, 'quantity' => $item['qty']));
						endif;
						
						// stock status notifications
						if (get_option('woocommerce_notify_no_stock_amount') && get_option('woocommerce_notify_no_stock_amount')>=$new_quantity) :
							do_action('woocommerce_no_stock', $_product);
						elseif (get_option('woocommerce_notify_low_stock_amount') && get_option('woocommerce_notify_low_stock_amount')>=$new_quantity) :
							do_action('woocommerce_low_stock', $_product);
						endif;
						
					endif;
					
				endif;
			 	
			endforeach;
			
			$this->add_order_note( __('Order item stock reduced successfully.', 'woocommerce') );
		
		endif;
			
	}
	
	/**
	 * List order notes (public) for the customer
	 */
	function get_customer_order_notes() {
		
		$notes = array();
		
		$args = array(
			'post_id' => $this->id,
			'approve' => 'approve',
			'type' => ''
		);
		
		remove_filter('comments_clauses', 'woocommerce_exclude_order_comments');
		
		$comments = get_comments( $args );
		
		foreach ($comments as $comment) :
			$is_customer_note = get_comment_meta($comment->comment_ID, 'is_customer_note', true);
			if ($is_customer_note) $notes[] = $comment;
		endforeach;
		
		add_filter('comments_clauses', 'woocommerce_exclude_order_comments');
		
		return (array) $notes;
		
	}

}


/**
 * Order Item Meta
 * 
 * A Simple class for managing order item meta so plugins add it in the correct format
 */
class order_item_meta {
	
	var $meta;
	
	/**
	 * Constructor
	 */
	function __construct( $item_meta = '' ) {
		$this->meta = array();
		
		if ($item_meta) $this->meta = $item_meta;
	}
	
	/**
	 * Load item meta
	 */
	function new_order_item( $item ) {
		if ($item) :
			do_action('woocommerce_order_item_meta', $this, $item);
		endif;
	}
	
	/**
	 * Add meta
	 */
	function add( $name, $value ) {
		$this->meta[] = array(
			'meta_name' 		=> $name, 
			'meta_value' 	=> $value
		);
	}
	
	/**
	 * Display meta in a formatted list
	 */
	function display( $flat = false, $return = false ) {
		global $woocommerce;
		
		if ($this->meta && is_array($this->meta)) :
			
			if (!$flat) $output = '<dl class="variation">'; else $output = '';
			
			$meta_list = array();
			
			foreach ($this->meta as $meta) :
				
				$name 	= $meta['meta_name'];
				$value	= $meta['meta_value'];
				
				if (!$value) continue;
				
				// If this is a term slug, get the term's nice name
	            if (taxonomy_exists(esc_attr(str_replace('attribute_', '', $name)))) :
	            	$term = get_term_by('slug', $value, esc_attr(str_replace('attribute_', '', $name)));
	            	if (!is_wp_error($term) && $term->name) :
	            		$value = $term->name;
	            	endif;
	            else :
	            	$value = ucfirst($value);
	            endif;
				
				if ($flat) :
					$meta_list[] = $woocommerce->attribute_label(str_replace('attribute_', '', $name)).': '.$value;
				else :
					$meta_list[] = '<dt>'.$woocommerce->attribute_label(str_replace('attribute_', '', $name)).':</dt><dd>'.$value.'</dd>';
				endif;
				
			endforeach;
			
			if ($flat) :
				$output .= implode(', ', $meta_list);
			else :
				$output .= implode('', $meta_list);
			endif;
			
			if (!$flat) $output .= '</dl>';

			if ($return) return $output; else echo $output;
			
		endif;
	}
	
}