Files
Alexander Heldt f15701f426 Apply nixfmt
2024-09-02 21:55:41 +02:00

129 lines
3.6 KiB
Nix

{
pkgs,
lib,
config,
...
}:
let
enabled = config.mod.bluetooth.enable;
in
{
options = {
mod.bluetooth = {
enable = lib.mkEnableOption "enable bluetooth module";
};
};
config = lib.mkIf enabled {
hardware.bluetooth = {
enable = true;
settings = {
General = {
Experimental = true;
};
};
};
services.blueman.enable = true;
# Low battery notification for bluetooth devices
systemd.user =
let
trackpad = {
id = "battery_hid_a8o91o3doe5ofeo38_battery";
name = "trackpad";
threshold = "20";
};
headphones = {
id = "headset_dev_38_18_4C_18_A4_6E";
name = "headphones";
threshold = "30";
};
in
{
timers =
let
mkTimer = device: {
name = "notify-low-battery-for-${device.name}";
value = {
unitConfig = {
Description = "notify-battery-low timer for '${device.name}'";
};
wantedBy = [ "timers.target" ];
timerConfig = {
Unit = "notify-low-battery-for-${device.name}.service";
OnCalendar = "*-*-* *:00:00"; # Every hour
Persistent = true;
};
};
};
in
builtins.listToAttrs (
builtins.map mkTimer [
trackpad
headphones
]
);
services =
let
mkService = device: {
name = "notify-low-battery-for-${device.name}";
value = {
unitConfig = {
Description = "check battery level of '${device.name}'";
};
wantedBy = [ "default.target" ];
serviceConfig = {
Type = "exec";
};
path = [
pkgs.upower
pkgs.gawk
pkgs.bc
pkgs.libnotify
];
script = ''
CONNECTED=$(upower --show-info /org/freedesktop/UPower/devices/${device.id} | grep native-path | awk '{print $2}')
[ "$CONNECTED" == "(null)" ] && exit 0
CHECKING="/tmp/checking-dismiss-low-battery-${device.id}"
[ ! -f "$CHECKING" ] && touch $CHECKING || exit 0
DISMISSED="/tmp/dismiss-low-battery-${device.id}"
PERCENT=$(upower --show-info /org/freedesktop/UPower/devices/${device.id} | grep percentage | grep -o '[0-9]*')
if (( $(echo "$PERCENT < ${device.threshold}" | bc) )); then
echo "'${device.name}' is under threshold. battery = $PERCENT% - threshold = ${device.threshold}%"
if [ ! -f "$DISMISSED" ]; then
DISMISS=$(notify-send --expire-time 0 "Low battery" "${device.name} has $PERCENT% battery" --action=dismiss=Dismiss)
[ "$DISMISS" == "dismiss" ] && touch $DISMISSED && echo "'${device.name}' dismissed"
fi
else
echo "'${device.name}' is over threshold. battery = $PERCENT% - threshold = ${device.threshold}%"
[ -f "$DISMISSED" ] && rm $DISMISSED && echo "'${device.name}' undismissed"
fi
rm $CHECKING
'';
};
};
in
builtins.listToAttrs (
builtins.map mkService [
trackpad
headphones
]
);
};
};
}