Revert "i3-companion: revert back to using rfcomm to get battery"

This reverts commit 4ac86d1632. Let's
try again with Pipewire this time!

bin/i3-companion

@@ -739,18 +739,16 @@ async def bluetooth_notifications(i3, event, path, interface, changed, invalid):
             and "Connected" in args[1]
             or args[0] == "org.bluez.Adapter1"
             and "Powered" in args[1]
+            or args[0] == "org.bluez.Battery1"
+            and "Percentage" in args[1]
         ),
     ),
 )
-@static(scheduled=None)
 @retry(2)
-@debounce(0.2)
+@debounce(4)
 @polybar("bluetooth")
 async def bluetooth_status(i3, event, *args):
     """Update bluetooth status for Polybar."""
-    if bluetooth_status.scheduled:
-        bluetooth_status.scheduled.cancel()
-        bluetooth_status.scheduled = None
     if event is StartEvent:
         # Do we have a bluetooth device?
         if not os.path.exists("/sys/class/bluetooth"):
@@ -772,17 +770,18 @@ async def bluetooth_status(i3, event, *args):
                 powered = True
         elif "org.bluez.Device1" in interfaces:
             # We have a device!
-            device = interfaces["org.bluez.Device1"]
+            device = types.SimpleNamespace(major=0, minor=0, battery=None)
-            if not device["Connected"][1]:
+            interface = interfaces["org.bluez.Device1"]
+            if not interface["Connected"][1]:
                 continue
             try:
-                device_class = device["Class"][1]
+                device_class = interface["Class"][1]
-                major = (device_class & 0x1F00) >> 8
+                device.major = (device_class & 0x1F00) >> 8
-                minor = (device_class & 0xFC) >> 2
+                device.minor = (device_class & 0xFC) >> 2
-                mac = device["Address"][1]
+                device.battery = interfaces["org.bluez.Battery1"]["Percentage"][1]
-                devices.append((major, minor, mac))
             except KeyError:
-                devices.append((0, 0, ""))
+                pass
+            devices.append(device)
 
     # Choose appropriate icons for output
     # See: https://btprodspecificationrefs.blob.core.windows.net/assigned-numbers
@@ -791,7 +790,7 @@ async def bluetooth_status(i3, event, *args):
         output = ""
     else:
         output = ["bluetooth"]
-        for major, minor, mac in devices:
+        for device in devices:
             classes = {
                 1: "laptop",
                 2: "phone",
@@ -817,54 +816,20 @@ async def bluetooth_status(i3, event, *args):
                     (lambda x: x & 0x20, "printer"),
                 ],
             }
-            icon = classes.get((major, minor)) or classes.get(major, "unknown")
+            icon = classes.get((device.major, device.minor)) or classes.get(
+                device.major, "unknown"
+            )
             if type(icon) is list:
                 for matcher, name in icon:
-                    if matcher(minor):
+                    if matcher(device.minor):
                         icon = name
                         break
                 else:
                     icon = "unknown"
             output.append(icon)
-            if mac.startswith("2C:41:A1"):
+            if device.battery is not None:
-                # Get battery status for BOSE QC 35 II. This is hacky.
+                icon = f"battery-{(device.battery+12)//25*25}"
-                # For other headsets, the information could be
-                # available through upower DBus. See
-                # https://github.com/Denton-L/based-connect. Starting
-                # from PA 16, it may be exposed by PA, then to BlueZ.
-                # See
-                # https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/482
-                loop = asyncio.get_event_loop()
-                sock = socket.socket(
-                    socket.AF_BLUETOOTH, socket.SOCK_STREAM, socket.BTPROTO_RFCOMM
-                )
-                try:
-                    sock.setblocking(False)
-                    # Workaround a bug in asyncio: https://bugs.python.org/issue27929
-                    fut = loop.create_future()
-                    loop._sock_connect(fut, sock, (mac, 8))
-                    await fut
-                    # Get battery
-                    for send, ack, size in (
-                        (b"\0\1\1\0", b"\0\1\3\5", 5),  # get firmware
-                        (b"\2\2\1\0", b"\2\2\3\1", 1),  # get battery
-                    ):
-                        await loop.sock_sendall(sock, send)
-                        rack = await loop.sock_recv(sock, len(ack))
-                        assert rack == ack, "incorrect ack received"
-                        result = await loop.sock_recv(sock, size)
-                    battery = result[0]
-                finally:
-                    sock.close()
-                # Choose an icon
-                icon = f"battery-{(battery+12)//25*25}"
                 output[-1] = (output[-1], icon)
-
-                # Schedule a refresh in 5 minutes
-                bluetooth_status.scheduled = loop.call_later(
-                    600,
-                    lambda: asyncio.create_task(bluetooth_status(i3, StartEvent)),
-                )
         return "|".join(
             (" ".join(icons[oo] for oo in o) if type(o) is tuple else icons[o])
             for o in output