php node.js chatgpt chatbot integration

Task to be done today. I have a messaging bot which is just one single php file, connected to my DB and to a 3rd part API. I need a freelancer to implement the chatgpt API integration using Node/php. My bot code is well organized and not a large file. File is attached and we will simply create a new tmp_type=5000, for example, and when a even happens it will send the request to openAI. Currently the bot is already integrated with Zapier (which we will NOT use in this project) so I think that this part of the code can also be used as guide to what needs to be done.