Further work on manual studygroup assignment

booking.studygroups.inc

@@ -378,7 +378,7 @@ function booking_studygroups_edit_form($node, &$form_state, $nid) {
 		return "";		
 	}
 	
-	$prefix = t("<p>Manually assign/update study group sessions for !first !last. Note: Not yet functional!</p>", array('!first' => $person->booking_firstname, '!last' => $person->booking_lastname));	
+	$prefix = t("<p>Manually assign/update study group sessions for !first !last.<br />If updating an existing session ID, this will also copy any role assigned (leader, helper, etc).</p><p><b>Note:&nbsp;Still under testing!</b></p>", array('!first' => $person->booking_firstname, '!last' => $person->booking_lastname));	
 	
 	//select the groups this person is already assigned to, indexed by studygroup id
 	$person_groups_query = db_query("SELECT * FROM {booking_studygroup_mapping} WHERE booking_eventid = :eid AND booking_node_id = :nid", 
@@ -393,7 +393,11 @@ function booking_studygroups_edit_form($node, &$form_state, $nid) {
 	$num_sessions = reset($studygroups)->booking_num_group_sessions;
 	//create the array for our html select fields
 	for ($i = 1; $i <= $num_sessions; $i++)
+	{
 		$session_options[$i] = $i;
+	}
+		
+	$session_options['Remove'] = 'Remove';
 	
 	//select any entries already in the mapping table
 	$group_mapping_query = db_query("SELECT * FROM {booking_studygroup_mapping} WHERE booking_eventid = :eid", array(':eid' => $event->eid));
@@ -473,7 +477,7 @@ function booking_studygroups_edit_form_submit($form, &$form_state) {
 	global $event;
 	$counter = 0;
 	$checkboxes = $form_state['values']['table'];
-	$studygroup_sessionids = $form_state['values']['booking_assign_sessionid'];
+	$studygroup_ids = $form_state['values']['booking_assign_sessionid'];
 	$values = $form_state['input'];
 	
 	//check that $values['personid'] is a number
@@ -491,12 +495,62 @@ function booking_studygroups_edit_form_submit($form, &$form_state) {
 					array(':eid' => $event->eid, ':nid' => $nid));
 	$person_groups = $person_groups_query->fetchAllAssoc('booking_studygroup_id');
 	
-	//TODO:
+	//select all the study groups for this event id
-	//
+	$studygroups_query = db_query("SELECT * FROM {booking_studygroup_list} WHERE booking_eventid = :eid", array(':eid' => $event->eid));
-	//loop through $studygroup_sessionids
+	$studygroups = $studygroups_query->fetchAll();	
-	//compare each value to $person_groups
-	//if there is a difference, update the table 
 	
+	//loop through array of study group IDs and compare against existing database entries
+	foreach ($studygroup_ids as $key => $value)
+	{
+		//check if there is a valid value to process
+		if ($value > 0 || $value == 'Remove')
+		{
+			
+			//watchdog('booking', "<pre>Study Group key:\n@key\nValue\n@value</pre>", array('@key' => print_r( $key, true), '@value' => print_r( $value, true)));	
+			
+			//check to see if we need to remove a study group mapping
+			if (! empty($person_groups[$key]) && $value == 'Remove')
+			{
+				watchdog('booking', "Removing an existing Study Group session id: @id from group @group.\n<pre>@info</pre>", array('@id' => $value, '@group' => $key, '@info' => print_r( $person_groups[$key], true)));
+				
+				$num_deleted = db_delete('booking_studygroup_mapping')
+					->condition('sid', $person_groups[$key]->sid)
+				 	->execute();				
+			}
+			//check for an existing study group mapping to change
+			elseif (! empty($person_groups[$key]) && $person_groups[$key]->booking_session_id != $value)
+			{
+				watchdog('booking', "Updating Study Group session from: @key to @value", array('@key' => $person_groups[$key]->booking_session_id, '@value' => $value));
+
+				db_update('booking_studygroup_mapping')
+				  ->fields(array(
+					'booking_session_id' => $value,
+					'booking_is_leader' => $person_groups[$key]->booking_is_leader,
+					'booking_is_helper' => $person_groups[$key]->booking_is_helper,		
+					'booking_is_reserveleader' => $person_groups[$key]->booking_is_reserveleader,					
+					))
+				  ->condition('sid', $person_groups[$key]->sid)
+				  ->execute();	
+			}
+			//no previously defined value, so add a new entry to the mapping table			
+			else
+			{
+				watchdog('booking', "Adding Study Group session id: @id for group @group.", array('@id' => $value, '@group' => $key));
+
+				db_insert('booking_studygroup_mapping')
+					->fields(array(	
+					    'booking_eventid' => $event->eid,
+						'booking_node_id' => $nid,
+						'booking_studygroup_id' => $key,
+						'booking_session_id' => $value,
+						'booking_is_leader' => 'N',
+						'booking_is_helper' => 'N',	
+						'booking_is_reserveleader' => 'N',
+				  ))
+				  ->execute();				
+			}
+		}
+	}
 }