WooCommerce Payment Gateway Development

Before writing code

Fetch live docs:

1. Web-search site:developer.woocommerce.com payment gateway api for payment gateway guide
2. Web-search woocommerce payment gateway tutorial for implementation patterns
3. Fetch https://woocommerce.github.io/code-reference/classes/WC-Payment-Gateway.html for class reference

Gateway Architecture

Base Class: WC_Payment_Gateway

All gateways extend WC_Payment_Gateway (which extends WC_Settings_API):