Use existing MTP connection in Plugin script?

[toadclones]

Hello, I have a question about everyone's favorite subject, MTP.
I'm trying to fix the Kindle Collections plugin to work with MTP devices(or just rewrite a simpler version). I'm wondering if it's possible for a plugin script to use the existing MTP connection calibre establishes rather than open a new one.

self.mtp_device = MTP_DEVICE(None)
self.mtp_device.startup()
self.scanner = DeviceScanner()
self.scanner.scan()
cd = self.mtp_device.detect_managed_devices(self.scanner.devices)
if cd is None:
    debug_print('CONNECTED DEVICES IS NONE OH NOOOO')
else:
    self.mtp_device.open(cd, 'test_lib')
    list_shit_idk = self.mtp_device.list('documents')
    debug_print(f'DOCUMENTS?? {list_shit_idk}')

This code fails on self.mtp_device.open. Calibre is already connected so I assume that's why.

[kovidgoyal]

There can be only one mtp connection to a device on non windows platforms. Look in gui2/device.py for how to use a device within the calibre gui.

[toadclones]

Thanks! Found the CurrentlyConnectedDevice object.

For anyone else wondering, this works:

from calibre.devices.interface import currently_connected_device
from calibre.devices.mtp.driver import MTP_DEVICE

if isinstance(currently_connected_device.device, MTP_DEVICE):
    mtp_device: MTP_DEVICE = currently_connected_device.device
    books = mtp_device.books()
    # do whatever else