#!/bin/bash

pictureURI="file://${HOME}/bgs/default.jpg"

# Check for existing instances and kill them leaving current instance running
for PID in $(pidof -o %PPID -x "${0##*/}"); do
    if [ "$PID" != $$ ]; then
        kill -9 "$PID"
    fi 
done
# set initial status
ACTIVE=false

setDefaultBg() {
gsettings set org.cinnamon.desktop.background.slideshow slideshow-enabled false && gsettings set org.cinnamon.desktop.background picture-uri $pictureURI
}

# Start the main loop to monitor screensaver status changes
dbus-monitor --session "interface='org.cinnamon.ScreenSaver', member='ActiveChanged'" | while read -r STATE
do
    if ( ! $ACTIVE ); then
	echo "$STATE"
	if echo "$STATE" | grep -q "boolean true"; then
	    echo "setting bg"
	    setDefaultBg
	    ACTIVE=true
	fi

    elif echo "$STATE" | grep -q "boolean false"; then
	echo "$STATE"
	echo "screen unlocked"
	ACTIVE=false
    fi



sleep 1
done