#!/bin/bash

PID=$(pgrep gammastep)
RUNNING=0
if [ -e $HOME/.spool/gammastep.status ]; then
    RUNNING=`cat $HOME/.spool/gammastep.status`
fi

ACTION=$1
if [[ "$1" == '' ]]; then
    ACTION='bar'
fi

if [[ $ACTION == 'bar' ]]; then
    :
elif [[ $ACTION == 'toggle' ]]; then
    if [ ! -z $PID ]; then
        kill -SIGUSR1 $PID
        if [[ $RUNNING == 0 ]]; then
            echo 1 > $HOME/.spool/gammastep.status
        else
            echo 0 > $HOME/.spool/gammastep.status
        fi
    else
        echo 'Gammastep is not running'
    fi
elif [[ $ACTION == 'start' ]]; then
    if [ ! -z $PID ]; then
        echo 'Gammastep is already running'
    else
        $HOME/scripts/sway/gammastep.pl
    fi
elif [[ $ACTION == 'stop' ]]; then
    if [ ! -z $PID ]; then
        kill $PID
    else
        echo 'Gammastep is not running'
    fi
elif [[ $ACTION == 'enable' ]]; then
    if [ ! -z $PID ]; then
        if [[ $RUNNING != 0 ]]; then
            echo 'Already enabled'
        else
            kill -SIGUSR1 $PID
            echo 1 > $HOME/.spool/gammastep.status
        fi
    else
        echo 'Gammastep is not running'
    fi
elif [[ $ACTION == 'disable' ]]; then
    if [ ! -z $PID ]; then
        if [ $RUNNING ]; then
            kill -SIGUSR1 $PID
            echo 0 > $HOME/.spool/gammastep.status
        else
            echo 'Already disabled'
        fi
    else
        echo 'Gammastep in not running'
    fi
else
    echo "Invalid argument '$ACTION'. Use 'bar', 'toggle', 'start', 'stop', 'enable', 'disable'."
fi

RUNNING=0
if [ -e $HOME/.spool/gammastep.status ]; then
    RUNNING=`cat $HOME/.spool/gammastep.status`
fi
if [[ $RUNNING == 0 ]]; then
    echo '{"text":"ɣ","icon":"ɣ","tooltip":"Enable Gammastep","class":"disabled"}'
else
    echo '{"text":"ɣ","icon":"ɣ","tooltip":"Disable Gammastep","class":"enabled"}'
fi