Want to integrate an existing wordpress website with petpooja api

I need my current WordPress site, which runs WooCommerce for its online menu, to talk directly to the PetPooja API. Two key things must happen automatically: 1. Every time I update an item or change a price in PetPooja, the same change should appear in WooCommerce without manual work. 2. When a customer places an order on my website, that order has to reach PetPooja instantly so it shows up on the POS alongside in-store tickets. A lightweight custom plugin or a clean code snippet that hooks into WooCommerce is fine, as long as it keeps core files untouched and can survive future updates. Clear setup instructions and basic error-logging are part of the hand-off, and I’ll test the flow by changing a price in PetPooja and placing a live order on the site. If you’ve integrated third-party restaurant POS systems with WooCommerce before, your experience will help us move fast.