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