Extend event, error logging & order notes (488)

[Dinamiko]

As of version 1.6.4, when the payment is successful at PayPal but the order for some reason fails in WooCommerce, there is no information logged about the failure. The WooCommerce order only shows a generic error in the order notes: Could not process order. Order status changed from Pending payment to Failed.

The same error is displayed when a payment has been rejected at PayPal. The PayPal Card Processing creates a Failed WooCommerce order with the same error.When logging is disabled in the plugin, then the merchant would have no clue as to what caused the order to fail.

Printing the API response that caused the order to fail in the order notes can help the store owner&user to better understand the problem:https://developer.paypal.com/api/rest/reference/orders/v2/errors/

Example case: User pays with a credit card via DCC and PayPal rejects the payment with: INSTRUMENT_DECLINED

The order notes could then display the API error with a description:

INSTRUMENT_DECLINED: 
The instrument presented was either declined by the processor or bank or it can't be used for this payment.

Negative testing instrument declined plugin

negative-testing-instrument-declined.php.zip

To Reproduce

1. Install and activate 'Negative testing instrument declined' plugin attached above.
2. Place an order.
3. It will trigger INSTRUMENT_DECLINED by redirecting to PayPal site and will include two more payment tries until it fails displaying the error message in checkout screen.

Expected Behavior

After failing it should display INSTRUMENT_DECLINED error message in the order note.

Actual Behavior

Only displays a generic error in checkout screen.

Environment

• WordPress Version: 5.9
• WooCommerce Version: 6.1
• Plugin Version: 1.6.4

[Dinamiko]

#458.