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Fix battery notifications

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This commit is contained in:
Oliver Davies 2024-11-27 19:00:42 +00:00
parent 0e2a86abb6
commit 1d40bf6c1d
5 changed files with 49 additions and 35 deletions
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34
bin/notify-battery
View file

@ -1,34 +0,0 @@
#!/usr/bin/env bash
set -o errexit
set -o nounset
set -o pipefail
export DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/1000/bus"
export DISPLAY=:0
# Battery percentage at which to notify.
BATTERY_DISCHARGING=$(acpi -b | grep "Battery 0" | grep -c "Discharging")
BATTERY_LEVEL=$(acpi -b | grep "Battery 0" | grep -P -o '[0-9]+(?=%)')
WARNING_LEVEL=20
# Use two files to store whether we've shown a notification or not (to prevent multiple notifications).
EMPTY_FILE=/tmp/battery-empty
FULL_FILE=/tmp/battery-full
# Reset notifications if the computer is charging/discharging.
if [ "$BATTERY_DISCHARGING" -eq 1 ] && [ -f $FULL_FILE ]; then
rm $FULL_FILE
elif [ "$BATTERY_DISCHARGING" -eq 0 ] && [ -f $EMPTY_FILE ]; then
rm $EMPTY_FILE
fi
# If the battery is charging and is full (and has not shown notification yet).
if [ "$BATTERY_LEVEL" -gt 95 ] && [ "$BATTERY_DISCHARGING" -eq 0 ] && [ ! -f $FULL_FILE ]; then
notify-send "Battery Charged" "Battery is fully charged." -r 9991
touch $FULL_FILE
# If the battery is low and is not charging (and has not shown notification yet).
elif [ "$BATTERY_LEVEL" -le $WARNING_LEVEL ] && [ "$BATTERY_DISCHARGING" -eq 1 ] && [ ! -f $EMPTY_FILE ]; then
notify-send "Low Battery" "${BATTERY_LEVEL}% of battery remaining." -u critical -r 9991 -t 0
touch $EMPTY_FILE
fi

1
nix/home/opdavies/default.nix
View file

@ -63,6 +63,7 @@ in
gscan2pdf
handbrake
meslo-lg
notify-battery
obs-studio
okular
pamixer

2
nix/modules/nixos/i3.nix
View file

@ -17,7 +17,7 @@ in
enable = true;
systemCronJobs = [
"* * * * * opdavies /home/opdavies/bin/notify-battery"
"* * * * * opdavies ${pkgs.notify-battery}/bin/notify-battery"
];
};

1
nix/pkgs/default.nix
View file

@ -5,6 +5,7 @@ let
in
{
build-glove80 = callPackage ./build-glove80.nix { };
notify-battery = callPackage ./notify-battery.nix { };
vimPlugins = prev.vimPlugins // {
conf-vim = callPackage ./vim-plugins/conf-vim.nix { };

46
nix/pkgs/notify-battery.nix Normal file
View file

@ -0,0 +1,46 @@
{ pkgs, ... }:
pkgs.writeShellApplication {
name = "notify-battery";
runtimeInputs = with pkgs; [
acpi
bash
coreutils
dbus
];
text = ''
set +o nounset
set +o pipefail
export DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/1000/bus"
export DISPLAY=:0
# Battery percentage at which to notify.
BATTERY_DISCHARGING=$(acpi -b | grep "Battery 0" | grep -c "Discharging")
BATTERY_LEVEL=$(acpi -b | grep "Battery 0" | grep -P -o '[0-9]+(?=%)')
WARNING_LEVEL=20
# Use two files to store whether we've shown a notification or not (to prevent multiple notifications).
EMPTY_FILE=/tmp/battery-empty
FULL_FILE=/tmp/battery-full
# Reset notifications if the computer is charging/discharging.
if [ "$BATTERY_DISCHARGING" -eq 1 ] && [ -f $FULL_FILE ]; then
rm $FULL_FILE
elif [ "$BATTERY_DISCHARGING" -eq 0 ] && [ -f $EMPTY_FILE ]; then
rm $EMPTY_FILE
fi
# If the battery is charging and is full (and has not shown notification yet).
if [ "$BATTERY_LEVEL" -gt 95 ] && [ "$BATTERY_DISCHARGING" -eq 0 ] && [ ! -f $FULL_FILE ]; then
notify-send "Battery Charged" "Battery is fully charged." -r 9991
touch $FULL_FILE
# If the battery is low and is not charging (and has not shown notification yet).
elif [ "$BATTERY_LEVEL" -le $WARNING_LEVEL ] && [ "$BATTERY_DISCHARGING" -eq 1 ] && [ ! -f $EMPTY_FILE ]; then
notify-send "Low Battery" "''${BATTERY_LEVEL}% of battery remaining." -u critical -r 9991 -t 0
touch $EMPTY_FILE
fi
'';
}