A PIC sounds like the way I’d go, but I’m wondering if you could get away with using a DS2480B instead. It takes 5V RS232 commands and interfaces to 1wire. If the bluetooth adapter looks just like another COM port to the system, you may be able to use the driver for the DS9097U and all of the existing software like the OneWire viewer.
It’s a long shot, but it could get you out of programming a PIC if it worked.