mass update.

[my-dotfiles.git] / bin / change_wallpaper.sh

#! /bin/bash

PID=$$
PIDFILE=${PIDFILE:-/tmp/wallpaper.pid}
WAIT_CYCLE="5m"

trap "rm -f $PIDFILE" SIGTERM

WP_SETTER="/usr/bin/feh"
QARMA="/usr/bin/qarma"

function set_wp() {
	NEW_WP=$1
	$WP_SETTER --bg-fill $NEW_WP
}

# set background function (requires input)
function wpapers() {
	if [[ -f $1 ]]; then
		# We have a single file as input
		set_wp $1
		exit 0
	elif [[ -d $1 ]]; then
		# directory as input
		while true; do
			BGIMG=$(find $1 -type f -print | shuf -n1)
			set_wp ${BGIMG}
			sleep $WAIT_CYCLE
		done
	fi
}

function file_or_dir() {
	if [[ -f /tmp/choice ]]; then
		rm /tmp/choice
	fi

	FOD=$($QARMA --list --text="single image or directory?" --hide-header "file" "directory" > /tmp/choice)
	case $? in
		0 )
			file_chooser $(cat /tmp/choice)
			;;
		1 )
			$QARMA --info --title="Exiting!" --text="No wallpaper was changed."
			;;
		-1 )
			$QARMA --error --title="Ooops!!" --text="Something unexpected happened."
			;;
	esac
}

function file_chooser() {
	case $1 in
		"file" )
			FILE="$($QARMA --file-selection --title='Choose your Wallpaper')"
			case $? in
				0 )
					wpapers $FILE
					;;
				1 )
					$QARMA --info --title="Exiting!" --text="No wallpaper was changed."
					;;
				-1 )
					$QARMA --error --title="Ooops!!" --text="Something unexpected happened."
			esac
			;;
		"directory" )
			FILE="$($QARMA --file-selection --directory --title='Choose your Wallpaper directory')"
			case $? in
				0 )
					wpapers $FILE
					;;
				1 )
					$QARMA --info --title="Exiting!" --text="No wallpaper was changed."
					;;
				-1 )
					$QARMA --error --title="Ooops!!" --text="Something unexpected happened."
			esac
			;;
		* )
			$QARMA --error --title="Ooops!!" --text="Something unexpected happened."
			;;
	esac
}

function run() {
	if [[ $(basename $0) == "wallpaper.sh" ]]; then
		# we were called as wallpaper.sh, so simple wallpaper setter without qarma interaction
		wpapers $1
	elif [[ $(basename $0) == "change_wallpaper.sh" ]]; then
		# we use qarma to set the wallpaper
		$QARMA --question --title="Change Wallpaper" --text="Do you want to change the wallpaper?"
		case $? in
			0 )
				file_or_dir
				;;
			1 )
				$QARMA --info --title="Exiting!" --text="No wallpaper was changed."
				;;
			-1 )
				$QARMA --error --title="Ooops!!" --text="Something unexpected happened."
		esac
	fi
}

if [[ -r $PIDFILE ]]; then
	# PIDFILE exists, so I guess there's already an instance running
	# let's kill it and run again
	kill -s 15 $(cat $PIDFILE) > /dev/null 2>&1
	# should already be deleted by trap, but just to be sure
	rm $PIDFILE
fi

# create PIDFILE
echo $PID > $PIDFILE

run