Auto Update for power-profiles-daemon

auto-profile-update.sh

#!/bin/bash

# Initialize the last known state to prevent redundant actions
LAST_LEVEL=""

dbus-monitor --system "type='signal',path='/org/freedesktop/UPower/devices/battery_BAT0',member='PropertiesChanged'" | while read LINE; do
    echo ${LINE} | grep battery_BAT0 | grep -q PropertiesChanged
    if [ $? -eq 0 ]; then
        BATT_STAT=$(dbus-send --print-reply=literal --system --dest=org.freedesktop.UPower /org/freedesktop/UPower/devices/battery_BAT0 org.freedesktop.DBus.Properties.Get string:org.freedesktop.UPower.Device string:State | awk '{ print $3; }')
        
        # Determine the desired power level
        if [ $BATT_STAT -eq 1 ] || [ $BATT_STAT -eq 4 ]; then
            LEVEL="balanced"  # Use balanced when on AC
        elif [ $BATT_STAT -eq 5 ]; then
            LEVEL="balanced"  # Use balanced for other states if needed
        else
            LEVEL="power-saver"  # Use power-saver when on battery
        fi
        
        # Apply changes only if the level has changed
        if [ "$LEVEL" != "$LAST_LEVEL" ]; then
            echo "Changing power level to ${LEVEL}"
            gdbus call --system --dest net.hadess.PowerProfiles --object-path /net/hadess/PowerProfiles --method org.freedesktop.DBus.Properties.Set 'net.hadess.PowerProfiles' 'ActiveProfile' "<'${LEVEL}'>" > /dev/null
            [[ $? -ne 0 ]] && echo "Could not change power level to ${LEVEL}!"
            LAST_LEVEL="$LEVEL"  # Update the last known state
        fi
    fi
done