Transfer a part of code (PHP - cloud file storage API) from old to new version of ourwebsite

Hi, I need a someone very strong in PHP(Laravel) to help me transfer the file cloud storage APIs from old version to new version of our website. Our website is a Laravel website that we store file in backblaze (a cloud storage similar amazon S3). We have made a module to store files in backblaze cloud in the old version of website, but now we have a new version and we want to transfer that module from old version to new version of website (I will provide you the old version for reference) Please take a look of this module in the attachment... and the Backblaze APIs [login to view URL] (just for reference because we already made all in the module, we just need to transfer and integrate that module to the new version of our website - also we will provide you the old version that we have this module integrated and work OK for your reference during transfer) Make sure: - Files upload/download/delete from our website to B2 bucket work ok. - File of separate user will be stored in different folders in the bucket (B2) - File remove from Trash work ok - When we delete a user => whole file of that user (their folder in the bucket) will also be deleted from the bucket Thanks for reading!