classic controller to Bluetooth HID converter

Ok, so I love my wii classic controller and I would like to use it as a standard pc bluetooth controller. There are solutions out there to hook up the classic controller to a pc from mayflash using either usb or some wireless system which as far as I know is not Bluetooth since it requires a usb receiver to be plugged into the pc.
Ideally, I would like to have something that uses standard Bluetooth HID specifications and which has an internal battery as well as usb port for charging.
The problem is I have no idea how to do this :P

So here I am. If any of you hardware wizards could give me advice on how to do this and where to look to get something like this working. Or, if there's someone out there who likes the idea and knows his stuff and would like to help feel free to reply :)

Thanks for reading!