#!/bin/bash

## ###############
## Update management
## variables are used by this binary as well at the update script
## ###############
BATTERY_CLI_VERSION="v1.2.4"

# Path fixes for unexpected environments
PATH=/opt/homebrew/bin:/opt/homebrew/sbin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin

## ###############
## Variables
## ###############
binfolder=/usr/local/bin
visudo_folder=/private/etc/sudoers.d
visudo_file=${visudo_folder}/battery
configfolder=$HOME/.battery
pidfile=$configfolder/battery.pid
logfile=$configfolder/battery.log
maintain_percentage_tracker_file=$configfolder/maintain.percentage
maintain_voltage_tracker_file=$configfolder/maintain.voltage
daemon_path=$HOME/Library/LaunchAgents/battery.plist
calibrate_pidfile=$configfolder/calibrate.pid

# Voltage limits
voltage_min="10.5"
voltage_max="12.6"
voltage_hyst_min="0.1"
voltage_hyst_max="2"

## ###############
## Housekeeping
## ###############

# Create config folder if needed
mkdir -p $configfolder

# create logfile if needed
touch $logfile

# Trim logfile if needed
logsize=$(stat -f%z "$logfile")
max_logsize_bytes=5000000
if ((logsize > max_logsize_bytes)); then
	tail -n 100 $logfile >$logfile
fi

# CLI help message
helpmessage="
Battery CLI utility $BATTERY_CLI_VERSION

Usage:

  battery status
    output battery SMC status, % and time remaining

  battery logs LINES[integer, optional]
    output logs of the battery CLI and GUI
	eg: battery logs 100

  battery maintain PERCENTAGE[1-100,stop]
    reboot-persistent battery level maintenance: turn off charging above, and on below a certain value
	it has the option of a --force-discharge flag that discharges even when plugged in (this does NOT work well with clamshell mode)
    eg: battery maintain 80
    eg: battery maintain stop

  battery maintain VOLTAGE[${voltage_min}V-${voltage_max}V,stop] (HYSTERESIS[${voltage_hyst_min}V-${voltage_hyst_max}V])
    reboot-persistent battery level maintenance: keep battery at a certain voltage
  default hysteresis: 0.1V
    eg: battery maintain 11.4V       # keeps battery between 11.3V and 11.5V
    eg: battery maintain 11.4V 0.3V  # keeps battery between 11.1V and 11.7V

  battery charging SETTING[on/off]
    manually set the battery to (not) charge
    eg: battery charging on

  battery adapter SETTING[on/off]
    manually set the adapter to (not) charge even when plugged in
    eg: battery adapter off

  battery calibrate 
    calibrate the battery by discharging it to 15%, then recharging it to 100%, and keeping it there for 1 hour

  battery charge LEVEL[1-100]
    charge the battery to a certain percentage, and disable charging when that percentage is reached
    eg: battery charge 90

  battery discharge LEVEL[1-100]
    block power input from the adapter until battery falls to this level
    eg: battery discharge 90

  battery visudo
    ensure you don't need to call battery with sudo
    This is already used in the setup script, so you should't need it.

  battery update
    update the battery utility to the latest version

  battery reinstall
    reinstall the battery utility to the latest version (reruns the installation script)

  battery uninstall
    enable charging, remove the smc tool, and the battery script

"

# Visudo instructions
visudoconfig="
# Visudo settings for the battery utility installed from https://github.com/actuallymentor/battery
# intended to be placed in $visudo_file on a mac
Cmnd_Alias      BATTERYOFF = $binfolder/smc -k CH0B -w 02, $binfolder/smc -k CH0C -w 02, $binfolder/smc -k CH0B -r, $binfolder/smc -k CH0C -r
Cmnd_Alias      BATTERYON = $binfolder/smc -k CH0B -w 00, $binfolder/smc -k CH0C -w 00
Cmnd_Alias      DISCHARGEOFF = $binfolder/smc -k CH0I -w 00, $binfolder/smc -k CH0I -r
Cmnd_Alias      DISCHARGEON = $binfolder/smc -k CH0I -w 01
Cmnd_Alias      LEDCONTROL = $binfolder/smc -k ACLC -w 04, $binfolder/smc -k ACLC -w 03, $binfolder/smc -k ACLC -w 02, $binfolder/smc -k ACLC -w 01, $binfolder/smc -k ACLC -w 00, $binfolder/smc -k ACLC -r
ALL ALL = NOPASSWD: BATTERYOFF
ALL ALL = NOPASSWD: BATTERYON
ALL ALL = NOPASSWD: DISCHARGEOFF
ALL ALL = NOPASSWD: DISCHARGEON
ALL ALL = NOPASSWD: LEDCONTROL
"

# Get parameters
battery_binary=$0
action=$1
setting=$2
subsetting=$3

## ###############
## Helpers
## ###############

function log() {
	echo -e "$(date +%D-%T) - $1"
}

function valid_percentage() {
	if ! [[ "$1" =~ ^[0-9]+$ ]] || [[ "$1" -lt 0 ]] || [[ "$1" -gt 100 ]]; then
		return 1
	else
		return 0
	fi
}

## #################
## SMC Manipulation
## #################

# Change magsafe color
# see community sleuthing: https://github.com/actuallymentor/battery/issues/71
function change_magsafe_led_color() {
	log "MagSafe LED function invoked"
	color=$1

	# Check whether user can run color changes without password (required for backwards compatibility)
	if sudo -n smc -k ACLC -r &>/dev/null; then
		log "💡 Setting magsafe color to $color"
	else
		log "🚨 Your version of battery is using an old visudo file, please run 'battery visudo' to fix this, until you do battery cannot change magsafe led colors"
		return
	fi

	if [[ "$color" == "green" ]]; then
		log "setting LED to green"
		sudo smc -k ACLC -w 03
	elif [[ "$color" == "orange" ]]; then
		log "setting LED to orange"
		sudo smc -k ACLC -w 04
	else
		# Default action: reset. Value 00 is a guess and needs confirmation
		log "resetting LED"
		sudo smc -k ACLC -w 00
	fi
}

# Re:discharging, we're using keys uncovered by @howie65: https://github.com/actuallymentor/battery/issues/20#issuecomment-1364540704
# CH0I seems to be the "disable the adapter" key
function enable_discharging() {
	log "🔽🪫 Enabling battery discharging"
	sudo smc -k CH0I -w 01
	sudo smc -k ACLC -w 01
}

function disable_discharging() {
	log "🔼🪫 Disabling battery discharging"
	sudo smc -k CH0I -w 00
	# Keep track of status
	is_charging=$(get_smc_charging_status)

	if ! valid_percentage "$setting"; then

		log "Disabling discharging: No valid maintain percentage set, enabling charging"
		# use direct commands since enable_charging also calls disable_discharging, and causes an eternal loop
		sudo smc -k CH0B -w 00
		sudo smc -k CH0C -w 00
		change_magsafe_led_color "orange"

	elif [[ "$battery_percentage" -ge "$setting" && "$is_charging" == "enabled" ]]; then

		log "Disabling discharging: Charge above $setting, disabling charging"
		disable_charging
		change_magsafe_led_color "green"

	elif [[ "$battery_percentage" -lt "$setting" && "$is_charging" == "disabled" ]]; then

		log "Disabling discharging: Charge below $setting, enabling charging"
		# use direct commands since enable_charging also calls disable_discharging, and causes an eternal loop
		sudo smc -k CH0B -w 00
		sudo smc -k CH0C -w 00
		change_magsafe_led_color "orange"

	fi

	battery_percentage=$(get_battery_percentage)
}

# Re:charging, Aldente uses CH0B https://github.com/davidwernhart/AlDente/blob/0abfeafbd2232d16116c0fe5a6fbd0acb6f9826b/AlDente/Helper.swift#L227
# but @joelucid uses CH0C https://github.com/davidwernhart/AlDente/issues/52#issuecomment-1019933570
# so I'm using both since with only CH0B I noticed sometimes during sleep it does trigger charging
function enable_charging() {
	log "🔌🔋 Enabling battery charging"
	sudo smc -k CH0B -w 00
	sudo smc -k CH0C -w 00
	disable_discharging
}

function disable_charging() {
	log "🔌🪫 Disabling battery charging"
	sudo smc -k CH0B -w 02
	sudo smc -k CH0C -w 02
}

function get_smc_charging_status() {
	hex_status=$(smc -k CH0B -r | awk '{print $4}' | sed s:\)::)
	if [[ "$hex_status" == "00" ]]; then
		echo "enabled"
	else
		echo "disabled"
	fi
}

function get_smc_discharging_status() {
	hex_status=$(smc -k CH0I -r | awk '{print $4}' | sed s:\)::)
	if [[ "$hex_status" == "0" ]]; then
		echo "not discharging"
	else
		echo "discharging"
	fi
}

## ###############
## Statistics
## ###############

function get_battery_percentage() {
	battery_percentage=$(pmset -g batt | tail -n1 | awk '{print $3}' | sed s:\%\;::)
	echo "$battery_percentage"
}

function get_remaining_time() {
	time_remaining=$(pmset -g batt | tail -n1 | awk '{print $5}')
	echo "$time_remaining"
}

function get_charger_state() {
	ac_attached=$(pmset -g batt | tail -n1 | awk '{ x=match($0, /AC attached/) > 0; print x }')
	echo "$ac_attached"
}

function get_maintain_percentage() {
	maintain_percentage=$(cat $maintain_percentage_tracker_file 2>/dev/null)
	echo "$maintain_percentage"
}

function get_voltage() {
	voltage=$(ioreg -l -n AppleSmartBattery -r | grep "\"Voltage\" =" | awk '{ print $3/1000 }' | tr ',' '.')
	echo "$voltage"
}

## ###############
## Actions
## ###############

# Help message
if [ -z "$action" ] || [[ "$action" == "help" ]]; then
	echo -e "$helpmessage"
	exit 0
fi

# Visudo message
if [[ "$action" == "visudo" ]]; then

	# User to set folder ownership to is $setting if it is defined and $USER otherwise
	if [[ -z "$setting" ]]; then
		setting=$USER
	fi

	# Set visudo tempfile ownership to current user
	log "Setting visudo file permissions to $setting"
	sudo chown -R $setting $configfolder

	# Write the visudo file to a tempfile
	visudo_tmpfile="$configfolder/visudo.tmp"
	sudo rm visudo_tmpfile 2>/dev/null
	echo -e "$visudoconfig" >$visudo_tmpfile

	# If the visudo file is the same (no error, exit code 0), set the permissions just
	if sudo cmp $visudo_file $visudo_tmpfile &>/dev/null; then

		echo "The existing battery visudo file is what it should be for version $BATTERY_CLI_VERSION"

		# Check if file permissions are correct, if not, set them
		current_visudo_file_permissions=$(stat -f "%Lp" $visudo_file)
		if [[ "$current_visudo_file_permissions" != "440" ]]; then
			sudo chmod 440 $visudo_file
		fi

		# exit because no changes are needed
		exit 0

	fi

	# Validate that the visudo tempfile is valid
	if sudo visudo -c -f $visudo_tmpfile &>/dev/null; then

		# If the visudo folder does not exist, make it
		if ! test -d "$visudo_folder"; then
			sudo mkdir -p "$visudo_folder"
		fi

		# Copy the visudo file from tempfile to live location
		sudo cp $visudo_tmpfile $visudo_file

		# Delete tempfile
		rm $visudo_tmpfile

		# Set correct permissions on visudo file
		sudo chmod 440 $visudo_file

		echo "Visudo file updated successfully"

	else
		echo "Error validating visudo file, this should never happen:"
		sudo visudo -c -f $visudo_tmpfile
	fi

	exit 0
fi

# Reinstall helper
if [[ "$action" == "reinstall" ]]; then
	echo "This will run curl -sS https://raw.githubusercontent.com/actuallymentor/battery/main/setup.sh | bash"
	if [[ ! "$setting" == "silent" ]]; then
		echo "Press any key to continue"
		read
	fi
	curl -sS https://raw.githubusercontent.com/actuallymentor/battery/main/setup.sh | bash
	exit 0
fi

# Update helper
if [[ "$action" == "update" ]]; then

	# Check if we have the most recent version
	if curl -sS https://raw.githubusercontent.com/actuallymentor/battery/main/battery.sh | grep -q "$BATTERY_CLI_VERSION"; then
		echo "No need to update, offline version number $BATTERY_CLI_VERSION matches remote version number"
	else
		echo "This will run curl -sS https://raw.githubusercontent.com/actuallymentor/battery/main/update.sh | bash"
		if [[ ! "$setting" == "silent" ]]; then
			echo "Press any key to continue"
			read
		fi
		curl -sS https://raw.githubusercontent.com/actuallymentor/battery/main/update.sh | bash
	fi
	exit 0
fi

# Uninstall helper
if [[ "$action" == "uninstall" ]]; then

	if [[ ! "$setting" == "silent" ]]; then
		echo "This will enable charging, and remove the smc tool and battery script"
		echo "Press any key to continue"
		read
	fi
	enable_charging
	disable_discharging
	$battery_binary remove_daemon
	sudo rm -v "$binfolder/smc" "$binfolder/battery" $visudo_file
	sudo rm -v -r "$configfolder"
	pkill -f "/usr/local/bin/battery.*"
	exit 0
fi

# Charging on/off controller
if [[ "$action" == "charging" ]]; then

	log "Setting $action to $setting"

	# Disable running daemon
	$battery_binary maintain stop

	# Set charging to on and off
	if [[ "$setting" == "on" ]]; then
		enable_charging
	elif [[ "$setting" == "off" ]]; then
		disable_charging
	else
		log "Error: $setting is not \"on\" or \"off\"."
		exit 1
	fi

	exit 0

fi

# Discharge on/off controller
if [[ "$action" == "adapter" ]]; then

	log "Setting $action to $setting"

	# Disable running daemon
	$battery_binary maintain stop

	# Set charging to on and off
	if [[ "$setting" == "on" ]]; then
		enable_discharging
	elif [[ "$setting" == "off" ]]; then
		disable_discharging
	else
		log "Error: $setting is not \"on\" or \"off\"."
		exit 1
	fi

	exit 0

fi

# Charging on/off controller
if [[ "$action" == "charge" ]]; then

	if ! valid_percentage "$setting"; then
		log "Error: $setting is not a valid setting for battery charge. Please use a number between 0 and 100"
		exit 1
	fi

	# Disable running daemon
	$battery_binary maintain stop

	# Disable charge blocker if enabled
	$battery_binary adapter on

	# Start charging
	battery_percentage=$(get_battery_percentage)
	log "Charging to $setting% from $battery_percentage%"
	enable_charging # also disables discharging

	# Loop until battery percent is exceeded
	while [[ "$battery_percentage" -lt "$setting" ]]; do

		if [[ "$battery_percentage" -ge "$((setting - 3))" ]]; then
			sleep 20
		else
			caffeinate -is sleep 60
		fi

	done

	disable_charging
	log "Charging completed at $battery_percentage%"

	exit 0

fi

# Discharging on/off controller
if [[ "$action" == "discharge" ]]; then

	if ! valid_percentage "$setting"; then
		log "Error: $setting is not a valid setting for battery discharge. Please use a number between 0 and 100"
		exit 1
	fi

	# Start charging
	battery_percentage=$(get_battery_percentage)
	log "Discharging to $setting% from $battery_percentage%"
	enable_discharging

	# Loop until battery percent is exceeded
	while [[ "$battery_percentage" -gt "$setting" ]]; do

		log "Battery at $battery_percentage% (target $setting%)"
		caffeinate -is sleep 60
		battery_percentage=$(get_battery_percentage)

	done

	disable_discharging
	log "Discharging completed at $battery_percentage%"

fi

# Maintain at level
if [[ "$action" == "maintain_synchronous" ]]; then

	# Checking if the calibration process is running
	if test -f "$calibrate_pidfile"; then
		pid=$(cat "$calibrate_pidfile" 2>/dev/null)
		kill $calibrate_pidfile &>/dev/null
		log "🚨 Calibration process have been stopped"
	fi

	if ! valid_percentage "$setting"; then
		log "Error: $setting is not a valid setting for battery maintain. Please use a number between 0 and 100"
		exit 1
	fi

	# Recover old maintain status if old setting is found
	if [[ "$setting" == "recover" ]]; then

		# Before doing anything, log out environment details as a debugging trail
		log "Debug trail. User: $USER, config folder: $configfolder, logfile: $logfile, file called with 1: $1, 2: $2"

		maintain_percentage=$(cat $maintain_percentage_tracker_file 2>/dev/null)
		if [[ $maintain_percentage ]]; then
			log "Recovering maintenance percentage $maintain_percentage"
			setting=$(echo $maintain_percentage)
		else
			log "No setting to recover, exiting"
			exit 0
		fi
	fi

	# Check if the user requested that the battery maintenance first discharge to the desired level
	if [[ "$subsetting" == "--force-discharge" ]]; then
		# Before we start maintaining the battery level, first discharge to the target level
		log "Triggering discharge to $setting before enabling charging limiter"
		$battery_binary discharge "$setting"
		log "Discharge pre battery-maintenance complete, continuing to battery maintenance loop"
	else
		log "Not triggering discharge as it is not requested"
	fi

	# Start charging
	battery_percentage=$(get_battery_percentage)

	log "Charging to and maintaining at $setting% from $battery_percentage%"

	# Loop until battery percent is exceeded
	while true; do

		# Keep track of status
		is_charging=$(get_smc_charging_status)
		ac_attached=$(get_charger_state)

		if [[ "$battery_percentage" -ge "$setting" && ("$is_charging" == "enabled" || "$ac_attached" == "1") ]]; then

			log "Charge above $setting"
			if [[ "$is_charging" == "enabled" ]]; then
				disable_charging
			fi
			change_magsafe_led_color "green"

		elif [[ "$battery_percentage" -lt "$setting" && "$is_charging" == "disabled" ]]; then

			log "Charge below $setting"
			enable_charging
			change_magsafe_led_color "orange"

		fi

		sleep 60

		battery_percentage=$(get_battery_percentage)

	done

	exit 0

fi

# Maintain at voltage
if [[ "$action" == "maintain_voltage_synchronous" ]]; then

	# Recover old maintain status if old setting is found
	if [[ "$setting" == "recover" ]]; then

		# Before doing anything, log out environment details as a debugging trail
		log "Debug trail. User: $USER, config folder: $configfolder, logfile: $logfile, file called with 1: $1, 2: $2"

		maintain_voltage=$(cat $maintain_voltage_tracker_file 2>/dev/null)
		if [[ $maintain_voltage ]]; then
			log "Recovering maintenance voltage $maintain_voltage"
			setting=$(echo $maintain_voltage | awk '{print $1}')
			subsetting=$(echo $maintain_voltage | awk '{print $2}')
		else
			log "No setting to recover, exiting"
			exit 0
		fi
	fi

	voltage=$(get_voltage)
	lower_voltage=$(echo "$setting - $subsetting" | bc -l)
	upper_voltage=$(echo "$setting + $subsetting" | bc -l)
	log "Keeping voltage between ${lower_voltage}V and ${upper_voltage}V"

	# Loop
	while true; do
		is_charging=$(get_smc_charging_status)

		if (($(echo "$voltage < $lower_voltage" | bc -l))) && [[ "$is_charging" == "disabled" ]]; then
			log "Battery at ${voltage}V"
			enable_charging
		fi
		if (($(echo "$voltage >= $upper_voltage" | bc -l))) && [[ "$is_charging" == "enabled" ]]; then
			log "Battery at ${voltage}V"
			disable_charging
		fi

		sleep 60

		voltage=$(get_voltage)

	done

	exit 0

fi

# Asynchronous battery level maintenance
if [[ "$action" == "maintain" ]]; then

	# Kill old process silently
	if test -f "$pidfile"; then
		pid=$(cat "$pidfile" 2>/dev/null)
		kill $pid &>/dev/null
	fi

	if test -f "$calibrate_pidfile"; then
		pid=$(cat "$calibrate_pidfile" 2>/dev/null)
		kill $calibrate_pidfile &>/dev/null
		log "🚨 Calibration process have been stopped"
	fi

	if [[ "$setting" == "stop" ]]; then
		log "Killing running maintain daemons & enabling charging as default state"
		rm $pidfile 2>/dev/null
		$battery_binary disable_daemon
		$battery_binary status
		exit 0
	fi

	# Check if setting is a voltage
	is_voltage=false
	if [[ "$setting" =~ ^[0-9]+(\.[0-9]+)?V$ ]]; then
		setting="${setting//V/}"

		if [[ "$subsetting" =~ ^[0-9]+(\.[0-9]+)?V$ ]]; then
			subsetting="${subsetting//V/}"
		else
			subsetting="0.1"
		fi

		if (($(echo "$setting < $voltage_min" | bc -l) || $(echo "$setting > $voltage_max" | bc -l))); then
			log "Error: ${setting}V is not a valid setting. Please use a value between ${voltage_min}V and ${voltage_max}V"
			exit 1
		fi
		if (($(echo "$subsetting < $voltage_hyst_min" | bc -l) || $(echo "$subsetting > $voltage_max" | bc -l))); then
			log "Error: ${subsetting}V is not a valid setting. Please use a value between ${voltage_hyst_min}V and ${voltage_hyst_max}V"
			exit 1
		fi

		is_voltage=true
	fi

	# Check if setting is value between 0 and 100
	if ! valid_percentage "$setting"; then
		log "Called with $setting $action"
		# If non 0-100 setting is not a special keyword, exit with an error.
		if ! { [[ "$setting" == "stop" ]] || [[ "$setting" == "recover" ]]; }; then
			log "Error: $setting is not a valid setting for battery maintain. Please use a number between 0 and 100, or an action keyword like 'stop' or 'recover'."
			exit 1
		fi

	fi

	# Start maintenance script
	log "Starting battery maintenance at $setting% $subsetting"
	nohup $battery_binary maintain_synchronous $setting $subsetting >>$logfile &
	if [ "$is_voltage" = true ]; then
		log "Starting battery maintenance at ${setting}V ±${subsetting}V"
		nohup battery maintain_voltage_synchronous $setting $subsetting >>$logfile &
	else
		log "Starting battery maintenance at $setting% $subsetting"
		nohup battery maintain_synchronous $setting $subsetting >>$logfile &
	fi

	# Store pid of maintenance process and setting
	echo $! >$pidfile
	pid=$(cat "$pidfile" 2>/dev/null)

	if ! [[ "$setting" == "recover" ]]; then

		rm "$maintain_percentage_tracker_file" "$maintain_voltage_tracker_file" 2>/dev/null

		if [[ "$is_voltage" = true ]]; then
			log "Writing new setting $setting $subsetting to $maintain_voltage_tracker_file"
			echo "$setting $subsetting" >$maintain_voltage_tracker_file
			log "Maintaining battery at ${setting}V ±${subsetting}V"

		else
			log "Writing new setting $setting to $maintain_percentage_tracker_file"
			echo $setting >$maintain_percentage_tracker_file
			log "Maintaining battery at $setting%"
		fi

	fi

	# Enable the daemon that continues maintaining after reboot
	$battery_binary create_daemon

	exit 0

fi

# Battery calibration
if [[ "$action" == "calibrate_synchronous" ]]; then
	log "Starting calibration"

	# Stop the maintaining
	battery maintain stop

	# Discharge battery to 15%
	battery discharge 15

	while true; do
		log "checking if at 100%"
		# Check if battery level has reached 100%
		if battery status | head -n 1 | grep -q "Battery at 100%"; then
			break
		else
			sleep 300
			continue
		fi
	done

	# Wait before discharging to target level
	log "reached 100%, maintaining for 1 hour"
	sleep 3600

	# Discharge battery to 80%
	battery discharge 80

	# Recover old maintain status
	battery maintain recover
	exit 0
fi

# Asynchronous battery level maintenance
if [[ "$action" == "calibrate" ]]; then
	# Kill old process silently
	if test -f "$calibrate_pidfile"; then
		pid=$(cat "$calibrate_pidfile" 2>/dev/null)
		kill $pid &>/dev/null
	fi

	if [[ "$setting" == "stop" ]]; then
		log "Killing running calibration daemon"
		kill $calibrate_pidfile &>/dev/null
		rm $calibrate_pidfile 2>/dev/null

		exit 0
	fi

	# Start calibration script
	log "Starting calibration script"
	nohup battery calibrate_synchronous >>$logfile &

	# Store pid of calibration process and setting
	echo $! >$calibrate_pidfile
	pid=$(cat "$calibrate_pidfile" 2>/dev/null)
fi

# Status logger
if [[ "$action" == "status" ]]; then

	log "Battery at $(get_battery_percentage)% ($(get_remaining_time) remaining), $(get_voltage)V, smc charging $(get_smc_charging_status)"
	if test -f $pidfile; then
		maintain_percentage=$(cat $maintain_percentage_tracker_file 2>/dev/null)
		if [[ $maintain_percentage ]]; then
			maintain_level="$maintain_percentage%"
		else
			maintain_level=$(cat $maintain_voltage_tracker_file 2>/dev/null)
			maintain_level=$(echo "$maintain_level" | awk '{print $1 "V ±" $2 "V"}')
		fi
		log "Your battery is currently being maintained at $maintain_level"
	fi
	exit 0

fi

# Status logger in csv format
if [[ "$action" == "status_csv" ]]; then

	echo "$(get_battery_percentage),$(get_remaining_time),$(get_smc_charging_status),$(get_smc_discharging_status),$(get_maintain_percentage)"

fi

# launchd daemon creator, inspiration: https://www.launchd.info/
if [[ "$action" == "create_daemon" ]]; then

	call_action="maintain_synchronous"
	if test -f "$maintain_voltage_tracker_file"; then
		call_action="maintain_voltage_synchronous"
	fi

	daemon_definition="
<?xml version=\"1.0\" encoding=\"UTF-8\"?>
<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">
<plist version=\"1.0\">
	<dict>
		<key>Label</key>
		<string>com.battery.app</string>
		<key>ProgramArguments</key>
		<array>
			<string>$binfolder/battery</string>
			<string>$call_action</string>
			<string>recover</string>
		</array>
		<key>StandardOutPath</key>
		<string>$logfile</string>
		<key>StandardErrorPath</key>
		<string>$logfile</string>
		<key>RunAtLoad</key>
		<true/>
	</dict>
</plist>
"

	mkdir -p "${daemon_path%/*}"

	# check if daemon already exists
	if test -f "$daemon_path"; then

		log "Daemon already exists, checking for differences"
		daemon_definition_difference=$(diff --brief --ignore-space-change --strip-trailing-cr --ignore-blank-lines <(cat "$daemon_path" 2>/dev/null) <(echo "$daemon_definition"))

		# remove leading and trailing whitespaces
		daemon_definition_difference=$(echo "$daemon_definition_difference" | xargs)
		if [[ "$daemon_definition_difference" != "" ]]; then

			log "daemon_definition changed: replace with new definitions"
			echo "$daemon_definition" >"$daemon_path"

		fi
	else

		# daemon not available, create new launch deamon
		log "Daemon does not yet exist, creating daemon file at $daemon_path"
		echo "$daemon_definition" >"$daemon_path"

	fi

	# enable daemon
	launchctl enable "gui/$(id -u $USER)/com.battery.app"
	exit 0

fi

# Disable daemon
if [[ "$action" == "disable_daemon" ]]; then

	log "Disabling daemon at gui/$(id -u $USER)/com.battery.app"
	launchctl disable "gui/$(id -u $USER)/com.battery.app"
	exit 0

fi

# Remove daemon
if [[ "$action" == "remove_daemon" ]]; then

	rm $daemon_path 2>/dev/null
	exit 0

fi

# Display logs
if [[ "$action" == "logs" ]]; then

	amount="${2:-100}"

	echo -e "👾 Battery CLI logs:\n"
	tail -n $amount $logfile

	echo -e "\n🖥️	Battery GUI logs:\n"
	tail -n $amount "$configfolder/gui.log"

	echo -e "\n📁 Config folder details:\n"
	ls -lah $configfolder

	echo -e "\n⚙️	Battery data:\n"
	$battery_binary status
	$battery_binary | grep -E "v\d.*"

	exit 0

fi