Cleanup

Author: Kendysond

SI_Paystack.php

@@ -405,5 +405,89 @@ private function set_error_messages( $message, $display = true ) {
 			do_action( 'si_error', __CLASS__ . '::' . __FUNCTION__ . ' - error message from paystack', $message );
 		}
 	}
+	/**
+	 * Process Webhook
+	 */
+	public function process_webhooks() {
+
+		if ( ( strtoupper( $_SERVER['REQUEST_METHOD'] ) != 'POST' ) || ! array_key_exists('HTTP_X_PAYSTACK_SIGNATURE', $_SERVER) ) {
+			exit;
+		}
+
+	    $json = file_get_contents( "php://input" );
+
+		// validate event do all at once to avoid timing attack
+		if ( $_SERVER['HTTP_X_PAYSTACK_SIGNATURE'] !== hash_hmac( 'sha512', $json, $this->secret_key ) ) {
+			exit;
+		}
+
+	    $event = json_decode( $json );
+
+	    if ( 'charge.success' == $event->event ) {
+
+			http_response_code( 200 );
+
+			$order_details 		= explode( '_', $event->data->reference );
+
+			$order_id 			= (int) $order_details[0];
+
+	        $order 				= wc_get_order($order_id);
+
+	        $paystack_txn_ref 	= get_post_meta( $order_id, '_paystack_txn_ref', true );
+
+	        if ( $event->data->reference != $paystack_txn_ref ) {
+	        	exit;
+	        }
+
+	        if ( in_array( $order->get_status(), array( 'processing', 'completed', 'on-hold' ) ) ) {
+				exit;
+	        }
+
+    		$order_total	= $order->get_total();
+
+    		$amount_paid	= $event->data->amount / 100;
+
+    		$paystack_ref 	= $event->data->reference;
+
+			// check if the amount paid is equal to the order amount.
+			if ( $order_total !=  $amount_paid ) {
+
+				$order->update_status( 'on-hold', '' );
+
+				add_post_meta( $order_id, '_transaction_id', $paystack_ref, true );
+
+				$notice = 'Thank you for shopping with us.<br />Your payment transaction was successful, but the amount paid is not the same as the total order amount.<br />Your order is currently on-hold.<br />Kindly contact us for more information regarding your order and payment status.';
+				$notice_type = 'notice';
+
+				// Add Customer Order Note
+                $order->add_order_note( $notice, 1 );
+
+                // Add Admin Order Note
+                $order->add_order_note('<strong>Look into this order</strong><br />This order is currently on hold.<br />Reason: Amount paid is less than the total order amount.<br />Amount Paid was <strong>&#8358;'.$amount_paid.'</strong> while the total order amount is <strong>&#8358;'.$order_total.'</strong><br />Paystack Transaction Reference: '.$paystack_ref );
+
+				$order->reduce_order_stock();
+
+				wc_add_notice( $notice, $notice_type );
+
+				wc_empty_cart();
+
+			} else {
+
+				$order->payment_complete( $paystack_ref );
+
+				$order->add_order_note( sprintf( 'Payment via Paystack successful (Transaction Reference: %s)', $paystack_ref ) );
+
+				wc_empty_cart();
+
+			}
+
+			$this->save_card_details( $event, $order->get_user_id(), $order_id );
+
+			exit;
+	    }
+
+	    exit;
+
+	}
 }
 SI_Paystack::register();