Develop custom API inside a Woocommerce plugin (PHP)

The client's task was to develop the following API functions: 1) Initiate Revise item price/quantity from the server. 2) Initiate “End an woocommerce item” from the server 3) List an item using woocommerce API. 4) GetCurrentItems – Retrieve a list of all current active woocommrece items and send them to the server. 5) ItemChangeNotify – The only one that is from woocommerce to the server. It is a notification from woocommerce to a specific page on the server whenever there is an event on monitored items. As a result, we cretated: 1) a plugin for wordpress and non-cms servers to manage the poriducts and proces remotely in woocommerce + loading of logs of the user's actions in woocommerce (creation, changing and deleting of products). 2) a plugin for WordPress that logs the information about the user's actions with woocommerce products.