Script to expand disk size depending on free space

All the volumes on a server need to have a minimum of 10% free space – if the volume has less than 10% free, the script needs to increase the volume size on both the virtual machine(VMware), and extend the new size on the operating system. The new size should add enough resources (GBs) so the volume has 20% free. Script needs to be 100% accurate on what disk it needs to expand on both the vCenter side and OS side.