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index.php
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index.php
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<?php
/*
Plugin Name: WooGiving
Plugin URI: http://umarsheikh.co.uk/
Description: Adds a JustGiving payment gateway to WooCommerce.
Version: 1.0
Author: Umar Sheikh
Author URI: http://umarsheikh.co.uk/
License: LICENSE
*/
// Include class and register payment gateway
add_action( 'plugins_loaded', 'woogiving_init', 0 );
function woogiving_init() {
// Check if WooCommerce installed
if ( ! class_exists( 'WC_Payment_Gateway' ) ) return;
// Include the woogiving class
require_once 'class.woogiving.php';
// Add class to WooCommerce
add_filter( 'woocommerce_payment_gateways', 'woogiving_add_gateway' );
function woogiving_add_gateway( $methods ) {
$methods[] = 'WooGiving';
return $methods;
}
}
// Add custom action links on plugin page
add_filter( 'plugin_action_links_' . plugin_basename( __FILE__ ), 'woogiving_action_links' );
function woogiving_action_links( $links ) {
// Create action links
$plugin_links = array(
'<a href="' . admin_url( 'admin.php?page=wc-settings&tab=checkout' ) . '">' . __( 'Settings', 'woogiving' ) . '</a>',
);
// Merge with default links
return array_merge( $plugin_links, $links );
}
// Create unique reference
function woogiving_create_ref( $order_id ) {
$customer_order = new WC_Order( $order_id );
$ref = home_url();
$ref .= $customer_order->order_key;
$ref .= $order_id;
return strtoupper( md5( $ref ) );
}
// Get checkout return URL
function woogiving_get_return_url( $order = null ) {
if ( $order ) {
$return_url = $order->get_checkout_order_received_url();
} else {
$return_url = wc_get_endpoint_url( 'order-received', '', wc_get_page_permalink( 'checkout' ) );
}
if ( is_ssl() || get_option('woocommerce_force_ssl_checkout') == 'yes' ) {
$return_url = str_replace( 'http:', 'https:', $return_url );
}
return apply_filters( 'woocommerce_get_return_url', $return_url );
}
// Process payment function
function woogiving_process_donation(){
// Setup post variables
$wg_order_id = $_POST['wg_order_id'];
$jg_donation_id = $_POST['jg_donation_id'];
if ( is_numeric( $wg_order_id ) && ctype_alnum( $jg_donation_id ) ) {
// Validate order ID
$wg_order_id_validation = get_post( (int)$wg_order_id );
if ( $wg_order_id_validation ) {
// Get options
$wg_options = get_option('woocommerce_woogiving_settings');
// Include JG API and setup API
require_once 'inc/JustGivingClient.php';
$jg_client = new JustGivingClient( 'https://api.justgiving.com/', $wg_options['app_id'], 1, $wg_options['api_login'], $wg_options['api_password'] );
// Check if donation exists in JG
$wg_donation_id_check = $jg_client->Donation->RetrieveRef( woogiving_create_ref( $wg_order_id_validation->ID ) );
if ( count( $wg_donation_id_check->donations ) ) {
// Check if donations IDs match
if ( $wg_donation_id_check->donations[0]->id == (int)$jg_donation_id ) {
// Get donation details from JG
$wg_donation_id_status = $jg_client->Donation->RetrieveStatus( $jg_donation_id );
$jg_amount = $wg_donation_id_status->amount;
$jg_status = $wg_donation_id_status->status;
// Get customer order
$customer_order = new WC_Order( $wg_order_id_validation->ID );
// Check if amount donated is equal to higher than the amount in the order
if ( $jg_amount >= $customer_order->order_total && $jg_status == 'Accepted' ) {
// Get JG fundraising page ID
$wg_jg_page_check = $jg_client->Page->Retrieve( $wg_options['username'] );
// Check if donation was made to correct charity
if ( $wg_jg_page_check->charity->id == $wg_donation_id_check->donations[0]->charityId ) {
// Check order status
if ( $customer_order->get_status() == 'completed' ){
// Order has already been completed
return json_encode( array(
'wg_status' => 'failure',
'wg_message' => __( 'This donation has already been processed.', 'woogiving' )
));
} else {
// Reduce stock levels and complete payment
$customer_order->reduce_order_stock();
$customer_order->payment_complete( $jg_donation_id );
$customer_order->update_status( 'completed' );
return json_encode( array(
'wg_status' => 'success',
'wg_redirect' => woogiving_get_return_url( $customer_order )
));
}
} else {
return json_encode( array(
'wg_status' => 'failure',
'wg_message' => __( 'This donation cannot be processed, please contact us.', 'woogiving' )
));
}
}
} else {
return json_encode( array(
'wg_status' => 'failure',
'wg_message' => __( 'Invalid donation ID.', 'woogiving' )
));
}
} else {
return json_encode( array(
'wg_status' => 'failure',
'wg_message' => __( 'Invalid donation ID.', 'woogiving' )
));
}
} else {
return json_encode( array(
'wg_status' => 'failure',
'wg_message' => __( 'Donation could not be processed.', 'woogiving' )
));
}
} else {
return json_encode( array(
'wg_status' => 'failure',
'wg_message' => __( 'Donation could not be processed.', 'woogiving' )
));
}
}
// Process payment via ajax (process.php)
function woogiving_ajax_process_donation(){
// Process donation
$process_one = json_decode(woogiving_process_donation(), true); // Try for the first time
if ( $process_one['wg_status'] == 'failure' ) {
sleep(5);
$process_two = json_decode(woogiving_process_donation(), true); // Try for the second time
if ( $process_two['wg_status'] == 'failure' ) {
sleep(5);
echo woogiving_process_donation(); // Try for the last time
} else {
echo json_encode( $process_two );
}
} else {
echo json_encode( $process_one );
}
die();
}
add_action('wp_ajax_wg_ajax_process_donation', 'woogiving_ajax_process_donation');
add_action('wp_ajax_nopriv_wg_ajax_process_donation', 'woogiving_ajax_process_donation');
?>