From 4c33ebf977b5d359c5ea107ee291d074b39664a9 Mon Sep 17 00:00:00 2001
From: Nathan Coad <nathan@thecoads.com>
Date: Fri, 25 Apr 2014 22:54:55 +1000
Subject: [PATCH] Refund feature added

---
 booking.helper.inc   | 65 +++++++++++++++++++++++++++++++++++++++++---
 booking.register.inc |  7 +++--
 2 files changed, 66 insertions(+), 6 deletions(-)

diff --git a/booking.helper.inc b/booking.helper.inc
index 70bbcfe..c4f9141 100644
--- a/booking.helper.inc
+++ b/booking.helper.inc
@@ -424,7 +424,7 @@ function _booking_datepaid_ts($nid)
 /**
  * Helper function to return the amount for a booking deposit, if there is one
  */
-function _booking_deposit_amount()
+function _booking_deposit_amount($include_fees = TRUE)
 {
 	global $event;
 	
@@ -436,7 +436,7 @@ function _booking_deposit_amount()
 	if ($deposit)
 	{
 		//if we're using paypal, add the transaction fee
-		if (variable_get('booking_use_paypal', 0) == 1)
+		if (variable_get('booking_use_paypal', 0) == 1 && $include_fees == TRUE)
 		{
 			//add the 30 cent fixed cost
 			$amount_owing = $deposit->booking_price + 0.3;
@@ -523,9 +523,10 @@ function _booking_amount_paid($nid, $person = NULL)
             	$amount_paid = $person->booking_amount_paid;
 				//watchdog('booking', "Total amount paid for individual based on totals in booking_person table is " . $amount_paid);
 			}
-
+			//end combined payments check
 		}
 	}
+	//no spouse found
 	else
 	{		
 		//Check if there are payment records in the paypal transaction table for this unmarried person 
@@ -546,7 +547,7 @@ function _booking_amount_paid($nid, $person = NULL)
 		//	$amount_paid = $person->booking_amount_paid;
 	}
 
-	//watchdog('booking', "Total amount already paid for this registration " . $nid . " is " . $amount_paid);	
+	watchdog('booking', "Total amount already paid for this registration " . $nid . " is " . $amount_paid);	
 				
 	return $amount_paid;
 }
@@ -643,6 +644,62 @@ function _booking_amount_owing($nid, $amount_paid = 0, $include_paypal_fees = TR
 	return number_format($amount_owing, 2, '.', '');
 }
 
+/**
+ * Function to process the amount to refund a person when they withdraw their registration
+ *
+ * @param $person - the populated node object representing this person including related price information
+ * @return amount to be refunded for this registration
+ */
+function _booking_process_refund($person)
+{
+	global $event;
+	
+	//calculate amount to be refunded
+	$paid = _booking_amount_paid($person->nid, $person);
+	if ($paid > 0) 
+	{
+		//calculate the refund due
+		//don't include paypal fees in the deposit amount
+		$refund = $paid - _booking_deposit_amount(FALSE);
+	} 
+	
+	watchdog('booking', "Processing refund due to !first !last. Calculated as $!refund", 
+			array('!first' => $person->booking_firstname, '!last' => $person->booking_lastname, '!refund' => $refund));		
+
+	//update booking_amount_paid
+	db_update('booking_person')
+	  ->fields(array(
+		'booking_amount_paid' => $person->booking_amount_paid - $refund,
+		))
+	  ->condition('nid', $person->nid)
+	  ->execute();	
+	
+	//add manual payment entry for refund
+	$result = db_insert('booking_payment')
+	  ->fields(array(
+		'booking_person_nid' => $person->nid,
+		'booking_eventid' => $event->eid,
+ 		'booking_mc_gross' => $refund * -1,
+ 		'booking_mc_currency' => 'AUD',
+ 		'booking_mc_fee' => '0.00',
+ 		'booking_quantity' => 1,
+ 		'booking_invoice' => 'Refund',
+		'booking_payer_id' => '',
+ 		'booking_payment_date' => REQUEST_TIME,
+ 		'booking_payment_status' => '',
+ 		'booking_first_name' => $person->booking_firstname,
+ 		'booking_last_name' => $person->booking_lastname,
+ 		'booking_buyer_email' => '',
+ 		'booking_payer_status' => '',
+ 		'booking_item_name' => 'Refund',
+ 		'booking_ipn_track_id' => '',
+	  ))
+	  ->execute();	
+
+	//return the amount to refund this person
+	return $refund;
+}
+
 /**
  * Helper function to cycle through a list without getting in an endless loop
  * Used for calculating study groups and maybe readings groups
diff --git a/booking.register.inc b/booking.register.inc
index 5526709..1e2e48f 100644
--- a/booking.register.inc
+++ b/booking.register.inc
@@ -1277,9 +1277,12 @@ function _booking_update($node) {
 		watchdog('booking', 'Detected person moving from Booked In list to No Longer Coming');
 		
 		//let this person know their request has been processed
-		_booking_demoted_to_notcoming_email($node->nid);	
+		_booking_demoted_to_notcoming_email($node->nid);
 		
-		//TODO: Calculate refund		
+		//Calculate refund
+		$refund = _booking_process_refund($node);	
+		drupal_set_message(t('Refund calculated for !first !last is $!refund.', 
+					array('!first' => $node->booking_firstname, '!last' => $node->booking_lastname, '!refund' => $refund)));
 
 		//check if there is room on the booked-in list
 		if (_booking_check_bookings_full() == False)