/**
** Builds the payment link for WHMCS users to be redirected to GoCardless
**/
function gocardless_link($params)
{
# get global config params
global $CONFIG;
# create GoCardless database if it hasn't already been created
gocardless_createdb();
# check the invoice, to see if it has a record with a valid resource ID. If it does, the invoice is pending payment.
# we will return a message on the invoice to prevent duplicate payment attempts
$aGC = mysql_fetch_assoc(select_query('mod_gocardless', 'id,payment_failed', array('invoiceid' => $params['invoiceid'], 'resource_id' => array('sqltype' => 'NEQ', 'value' => ''))));
if ($aGC['id']) {
if ($aGC['payment_failed'] == 0) {
# Pending Payment Found - Prevent Duplicate Payment with a Msg
return '<strong>Your payment is currently pending and will be processed within 3-5 days.</strong>';
} else {
# display a message to the user suggesting that a payment against the invoice has failed
return '<strong>One or more payment attempts have failed against this invoice. Please contact our support department.</strong>';
}
}
# get relevant invoice data
$aRecurrings = getRecurringBillingValues($params['invoiceid']);
$recurringcycleunit = strtolower(substr($aRecurrings['recurringcycleunits'], 0, -1));
# check a number of conditions to see if it is possible to setup a preauth
if ($params['oneoffonly'] == 'on' || $aRecurrings === false || $aRecurrings['recurringamount'] <= 0) {
$noPreauth = false;
#MOD
} else {
$noPreauth = false;
}
# set appropriate GoCardless API details
gocardless_set_account_details($params);
# set user array based on params parsed to $link
$aUser = array('first_name' => $params['clientdetails']['firstname'], 'last_name' => $params['clientdetails']['lastname'], 'email' => $params['clientdetails']['email'], 'billing_address1' => $params['clientdetails']['address1'], 'billing_address2' => $params['clientdetails']['address2'], 'billing_town' => $params['clientdetails']['city'], 'billing_county' => $params['clientdetails']['state'], 'billing_postcode' => $params['clientdetails']['postcode']);
$invoice_item_query = select_query('tblinvoiceitems', 'relid', array('invoiceid' => $params['invoiceid'], 'type' => 'Hosting'));
while ($invoice_item = mysql_fetch_assoc($invoice_item_query)) {
$package_query = select_query('tblhosting', 'subscriptionid', array('id' => $invoice_item['relid']));
$package = mysql_fetch_assoc($package_query);
if (!empty($package['subscriptionid'])) {
$preauthExists = true;
}
}
if ($preauthExists) {
# The customer already has a pre-auth, but it's yet to be charged so
# let's not let them set up another...
return (GoCardless::$environment == 'sandbox' ? '<strong style="color: #FF0000; font-size: 16px;">SANDBOX MODE</strong><br />' : null) . '<strong>Automatic payments via Direct Debit or another payment method are already configured for this invoice. You will receive an email once you have been billed.</strong>';
} elseif ($noPreauth) {
# if one of the $noPreauth conditions have been met, display a one time payment button
# we are making a one off payment, display the appropriate code
# Button title
$title = 'Pay Now with GoCardless';
# create GoCardless one off payment URL using the GoCardless library
$url = GoCardless::new_bill_url(array('amount' => $params['amount'], 'name' => "Invoice #" . $params['invoiceid'], 'user' => $aUser, 'state' => $params['invoiceid'] . ':' . $params['amount']));
# return one time payment button code
$sButton = (GoCardless::$environment == 'sandbox' ? '<strong style="color: #FF0000; font-size: 16px;">SANDBOX MODE</strong><br />' : null) . '<a href="' . $url . '" onclick="window.location=\'' . $url . '\';" style="text-decoration: none"><input onclick="window.location=\'' . $url . '\';" type="button" value="' . $title . '" /></a>';
} else {
# we are setting up a preauth (description friendly name), display the appropriate code
# get the invoice from the database because we need the invoice creation date
$aInvoice = mysql_fetch_assoc(select_query('tblinvoices', 'date', array('id' => $params['invoiceid'])));
# GoCardless only supports months in the billing period so
# if WHMCS is sending a year value we need to address this
if ($recurringcycleunit == 'year') {
$recurringcycleunit = 'month';
$aRecurrings['recurringcycleperiod'] = $aRecurrings['recurringcycleperiod'] * 12;
}
$pre_auth_maximum = 5000;
# Always create a £5000 pre-auth
# Button title
$title = 'Create Subscription with GoCardless';
# create GoCardless preauth URL using the GoCardless library
$url = GoCardless::new_pre_authorization_url(array('max_amount' => $pre_auth_maximum, 'setup_fee' => $aRecurrings['firstpaymentamount'] > $aRecurrings['recurringamount'] ? $aRecurrings['firstpaymentamount'] - $aRecurrings['recurringamount'] : 0, 'name' => "Direct Debit payments to " . $CONFIG['CompanyName'], 'interval_length' => '1', 'interval_unit' => 'day', 'start_at' => date_format(date_create($aInvoice['date'] . ' -2 days'), 'Y-m-d\\TH:i:sO'), 'user' => $aUser, 'state' => $params['invoiceid'] . ':' . $aRecurrings['recurringamount']));
# return the recurring preauth button code
$sButton = (GoCardless::$environment == 'sandbox' ? '<strong style="color: #FF0000; font-size: 16px;">SANDBOX MODE</strong><br />' : null) . 'When you get to GoCardless you will see an agreement for the <b>maximum possible amount</b> we\'ll ever need to charge you in a single invoice for this order, with a frequency of the shortest item\'s billing cycle. But rest assured we will never charge you more than the actual amount due.
<br /><a onclick="window.location=\'' . $url . '\';" href="' . $url . '" style="text-decoration: none"><input type="button" onclick="window.location=\'' . $url . '\';" value="' . $title . '" /></a>';
}
# return the formatted button
return $sButton;
}
public function gocardless_payment($b_id)
{
//get the bill to pay.
$this->load->model('order_model');
$bill = $this->order_model->get_bill($b_id);
if (!$bill) {
show_404();
}
//are we ready to pay it?
if ($bill['b_status'] != 'Pending') {
$this->flash->set('error', 'The payment for this bill can not be made right now.', TRUE);
return redirect('bill/view/' . $b_id);
}
//is it enough for Go Cardless?
if ($bill['b_price'] < 1) {
$this->flash->set('error', 'The bill is below the Go Cardless minimum spend.', TRUE);
return redirect('bill/view/' . $b_id);
}
//get going with Go Cardless
require_once APPPATH . '/third_party/GoCardless.php';
GoCardless::$environment = config_item('gocardless_environment');
GoCardless::set_account_details(config_item('gocardless_account'));
if ($this->input->post('automate_payments') == 1) {
//set up an authorization
if (!$this->input->post('gc_max_payment') || !is_numeric($this->input->post('gc_max_payment'))) {
$this->flash->set('error', 'The maximum value must be a number', TRUE);
return redirect('bill/view/' . $b_id);
}
if ($this->input->post('gc_max_payment') < $bill['b_price']) {
$this->flash->set('error', 'That authorization will not be enough to pay this bill.', TRUE);
return redirect('bill/view/' . $b_id);
}
$payment_details = array('redirect_uri' => site_url('bill/gocardless_complete/' . $b_id), 'cancel_uri' => site_url('bill/gocardless_cancelled/' . $b_id), 'state' => $b_id, 'max_amount' => $this->input->post('gc_max_payment'), 'name' => 'Weekly Delivery', 'interval_length' => 1, 'interval_unit' => 'week');
$gc_url = GoCardless::new_pre_authorization_url($payment_details);
} elseif ($this->input->post('make_payment') == 1) {
//make one off payment
$payment_details = array('redirect_uri' => site_url('bill/gocardless_complete/' . $b_id), 'cancel_uri' => site_url('bill/gocardless_cancelled/' . $b_id), 'state' => $b_id, 'amount' => $bill['b_price'], 'name' => 'Bill #' . $b_id);
$gc_url = GoCardless::new_bill_url($payment_details);
}
//send them to Go Cardless
if (!$gc_url) {
$this->flash->set('error', 'The payment was not recognised.', TRUE);
return redirect('bill/view/' . $b_id);
} else {
return redirect($gc_url);
}
}
}
$confirmed_resource = GoCardless::confirm_resource($confirm_params);
echo '<p>Payment confirmed!</p>';
}
echo '<h2>New payment URLs</h2>';
// New subscription
$payment_details = array('amount' => '10.00', 'interval_length' => 1, 'interval_unit' => 'month');
$subscription_url = GoCardless::new_subscription_url($payment_details);
echo '<p><a href="' . $subscription_url . '">New subscription</a>';
// New pre-authorization
$payment_details = array('max_amount' => '20.00', 'interval_length' => 1, 'interval_unit' => 'month');
$pre_auth_url = GoCardless::new_pre_authorization_url($payment_details);
echo ' · <a href="' . $pre_auth_url . '">New pre-authorized payment</a>';
// New bill
$payment_details = array('amount' => '30.00', 'name' => 'Donation', 'user' => array('first_name' => 'Tom', 'last_name' => 'Blomfield', 'email' => '*****@*****.**'));
$bill_url = GoCardless::new_bill_url($payment_details);
echo ' · <a href="' . $bill_url . '">New bill</a></p>';
echo 'NB. The \'new bill\' link is also a demo of pre-populated user data';
echo '<h2>API calls</h2>';
echo 'GoCardless_Merchant::find(\'258584\')';
echo '<blockquote><pre>';
$merchant = GoCardless_Merchant::find('258584');
print_r($merchant);
echo '</pre></blockquote>';
echo 'GoCardless_Merchant::find(\'258584\')->pre_authorizations()';
echo '<blockquote><pre>';
$preauths = GoCardless_Merchant::find('258584')->pre_authorizations();
print_r($preauths);
echo '</pre></blockquote>';
echo 'GoCardless_PreAuthorization::find(\'992869\')->create_bill($bill_details)';
echo '<blockquote><pre>';
/**
* Generate a URL to give a user to create a new bill
*
* @param array $params Parameters to use to generate the URL
*
* @return string The generated URL
*/
public static function new_bill_url($params)
{
return GoCardless::$client->new_bill_url($params);
}
public function newBillUrl($payment_details)
{
return \GoCardless::new_bill_url($payment_details);
}
