<?php

/**
 * @file
 * Admin pages for defining study groups
 */


/**
 * Function for listing the study groups and the ability to edit the group definitions
 */
function booking_studygroups_admin() {

	global $event;
	$output = "";
	$header = array('Study Group', 'Session Count', 'Reading Group?', 'Edit Definition');
	$attributes = array('style' => 'max-width:60%');	
	//$attributes = array();
	
	//get study groups
	$query = db_select('booking_studygroup_list', 's')
		->fields('s')
		->condition('s.booking_eventid', $event->eid, '=');
	$result = $query->execute();
	
	foreach ($result as $group) {
		$rows[] = array(
			$group->booking_studygroup_descrip,
			$group->booking_num_group_sessions,
			$group->booking_is_readinggroup == 'Y' ? 'Yes' : 'No',
			l(t('Edit Group Definition', array('!id' => $group->sid)),  t('admin/config/booking/studygroups/!id/edit', array('!id' => $group->sid))),					
		);
	}	

	//output everything
	$output .= t("<h3>!event Study Groups</h3>", array('!event' => $event->booking_eventname));
	$output .= theme('table', array('header' => $header, 'rows' => $rows, 'attributes' => $attributes));		 

	return $output;
	
}

/**
 * Function for listing the study groups and links to view each one
 */
function booking_studygroups_view_summary() {

	global $event;
	$output = "";
	$header = array('Study Group', 'Session Count', 'Reading Group?', 'View Membership', 'Compute Membership', 'Select Leaders');
	//$attributes = array('style' => 'max-width:50%');	
	$attributes = array();
	
	//get study groups
	$query = db_select('booking_studygroup_list', 's')
		->fields('s')
		->condition('s.booking_eventid', $event->eid, '=');
	$result = $query->execute();
	
	foreach ($result as $group) {
		$rows[] = array(
			$group->booking_studygroup_descrip,
			$group->booking_num_group_sessions,
			$group->booking_is_readinggroup == 'Y' ? 'Yes' : 'No',
			l(t('Current Membership', array('!id' => $group->sid)),  t('admin/booking/studygroups/!id/view', array('!id' => $group->sid))),		
			l(t('Compute Membership Update', array('!id' => $group->sid)),  t('admin/booking/studygroups/!id/update', array('!id' => $group->sid))),			
			l(t('Edit Leaders/Helpers', array('!id' => $group->sid)),  t('admin/booking/studygroups/!id/selectleaders', array('!id' => $group->sid))),
		);
	}	

	//output everything
	$output .= t("<h3>!event Study Groups</h3>", array('!event' => $event->booking_eventname));
	$output .= theme('table', array('header' => $header, 'rows' => $rows, 'attributes' => $attributes));		 

	return $output;
	
}

/**
 * Form to view or add a studygroup definition
 */
function booking_studygroups_define_form($node, &$form_state, $create, $editid = 0)
{
	$form = array ();
	$prefix = "<p>Add a new study group definition</p>";
	
	if ($create == true)
	{
		drupal_set_title('Add Study Group');				
		$data = $node;
		watchdog('booking', 'Creating new study group: @info', array ('@info' => var_export($node, TRUE)));
	}
	else
	{	
		drupal_set_title('Edit Study Group');				
		//verify that $editid is a number
		if (! preg_match('/^[0-9]+$/', $editid)) {
			drupal_set_message("Error: Invalid study group ID supplied. Unable to edit study group definition.", 'error', FALSE);
			drupal_goto('admin/booking/config/studygroups');
			return "";
		}

		$data = db_query("SELECT * FROM {booking_studygroup_list} WHERE sid = :id",
							array(':id' => $editid))
				->fetchObject();				
		$prefix = t("<p>Update the &quot;!event &quot; study group definition.</p>", array('!event' => $data->booking_studygroup_descrip));
		//add this to the form in a hidden field so we can update the right price
		$form['booking_sid'] = array (
			'#type' => 'hidden',
			'#value' => $editid,
		);
		watchdog('booking', 'Editing study group definition: @info', 
			array ('@info' => var_export($data, TRUE)));								
	}	
	
	
	if(!isset($form_state['storage']['confirm']))
	{
		$form['booking_studygroup_descrip'] = array (
			'#type' => 'textfield',
			'#title' => t('Description of this study group (eg Monday)'),
			'#size' => 60,	
			'#maxlength' => 150,
			'#required' => TRUE,
			'#default_value' => !empty($data->booking_studygroup_descrip) ? $data->booking_studygroup_descrip : '',
		);	
	
		$form['booking_num_group_sessions'] = array (
			'#type' => 'textfield',
			'#title' => t('The number of sessions this study group will have'),
			'#size' => 5,	
			'#maxlength' => 10,
			'#required' => TRUE,
			'#default_value' => !empty($data->booking_num_group_sessions) ? $data->booking_num_group_sessions : '',
		);	
	
		$form['booking_is_readinggroup'] = array (
			'#type' => 'radios',
			'#title' => t('Reading group?'),
			'#description' => t('Select whether this study group definition is for a reading group. Leave as No unless you want team colours associated with this group'),
			'#options' => array (0 => t('No'), t('Yes')),
			'#default_value' => !empty($data->booking_is_readinggroup) ? ($data->booking_is_readinggroup == 'Y' ? 1 : 0) : 0,  
		);		

		if ($create == true)
		{
			$form['submit'] = array
			(
				'#type' => 'submit',
				'#value' => t('Create Study Group'),
			);	
		} else {
			$form['Update'] = array
			(
				'#type' => 'submit',
				'#value' => t('Update Study Group'),
			);
			$form['Delete'] = array
			(
				'#type' => 'submit',
				'#value' => t("Delete Study Group Definition"),
			);		
		}
	
		return array (
			'first_para' => array (
				'#type' => 'markup',
				'#markup' => $prefix,
			),
			'form' => $form,
		);		
	}
	//confirm delete
	else 
	{
	    return confirm_form($form, "Are you sure you wish to delete studygroup definition with id " . $editid . "?", 
			current_path(), NULL, "Delete Study Group Definition");		
	}	
	
}


function booking_studygroups_define_form_submit($form, &$form_state) {

 	global $event;
	$values = $form_state['input'];
	$redirect_path = array('admin/config/booking/studygroups');
	$new_count = 0;
	
	//get the number of study groups before making this update
	$count = db_query("SELECT count(*) as num FROM {booking_studygroup_list} WHERE booking_eventid = :eid",
		array(':eid' => $event->eid))->fetchObject();	
	

	//watchdog('booking', 'Checkboxes when setting buttons: @info', array ('@info' => var_export($checkboxes, TRUE)));		
	if ($form_state['values']['op'] == 'Create Study Group')
	{						
		db_insert('booking_studygroup_list')
		  ->fields(array(		
				'booking_eventid' => $event->eid, 
				'booking_studygroup_descrip' => $values['booking_studygroup_descrip'],
				'booking_num_group_sessions' => $values['booking_num_group_sessions'],
				'booking_is_readinggroup' => $values['booking_is_readinggroup'] == 1 ? 'Y' : 'N',
		  ))
		  ->execute();
		  
		  $new_count = $count->num + 1;
	} 	
	//if we're deleting, add the confirmation to the form if it hasn't been defined yet
    elseif($form_state['values']['op'] == "Delete Study Group Definition" && (!isset($form_state['storage']['confirm']))) 
	{
		watchdog('booking', "<pre>Studygroup deletion confirmation being set:\n@info</pre>", array('@info' => print_r( $form_state, true)));
		$form_state['storage']['confirm'] = TRUE;
		$form_state['rebuild'] = TRUE;
		
		$new_count = $count->num;
    }
	elseif ($form_state['values']['op'] == 'Delete Study Group Definition')
	{
		//verify that booking_pid is a number
		if (! preg_match('/^[0-9]+$/', $values['booking_sid'])) {
			drupal_set_message("Error: Invalid studygroup ID supplied. Unable to delete entry.", 'error', FALSE);
			return "";
		}		
	
		//TODO: Confirmation
		//return confirm_form($form, "Really delete price?", 'admin/config/booking/prices');
		
		$num_deleted = db_delete('booking_studygroup_list')
		  ->condition('sid', $values['booking_sid'])
		  ->execute();
		
		$new_count = $count->num - 1;	
	}
	elseif ($form_state['values']['op'] == 'Update Study Group')
	{
	
		//verify that booking_sid is a number
		if (! preg_match('/^[0-9]+$/', $values['booking_sid'])) {
			drupal_set_message("Error: Invalid studygroup ID supplied. Unable to update study group.", 'error', FALSE);
			return "";
		}
	
		//update the study group
		db_update('booking_studygroup_list')
		->fields(array (
			'booking_eventid' => $event->eid, 
			'booking_studygroup_descrip' => $values['booking_studygroup_descrip'],
			'booking_num_group_sessions' => $values['booking_num_group_sessions'],
			'booking_is_readinggroup' => $values['booking_is_readinggroup'] == 1 ? 'Y' : 'N',
		))
		->condition('sid', $values['booking_sid'])
		->execute();
			
		$new_count = $count->num;			
	}	
		
	//update the number of study groups now defined
	variable_set('booking_studygroup_count', $new_count);
			
	$form_state['redirect'] = $redirect_path;
}