utility-background-cycler

#!/bin/bash

# dependencies /////////////////////////////////////////////////////////////////

if [ -f "${HOME}"/.local/bin/frobulator ]
then
	rm -r -f "${HOME}"/.local/bin/frobulator
fi

if [[ -z $(command -v frobulator) ]]
then
	if [[ $(id -u -n) = "root" ]]
	then
		SUDO_HOME=/root

		USER="${SUDO_USER}"

		HOME=/home/"${USER}"
	fi

	if [[ -z $(command -v curl) ]]
	then
		yes | apt-get install curl
	fi

	if [ ! -d "${HOME}"/.local/bin ]
	then
		mkdir -p "${HOME}"/.local/bin
	fi

	curl -s -L get.frbltr.app > "${HOME}"/.local/bin/frobulator

	chmod +x "${HOME}"/.local/bin/frobulator
fi

. "${HOME}"/.local/bin/frobulator

# superuser ////////////////////////////////////////////////////////////////////

frobulator.escalate

# script ///////////////////////////////////////////////////////////////////////

script=$(basename -- "${BASH_SOURCE[0]}")

# version //////////////////////////////////////////////////////////////////////

version="09-23-2022"

# usage ////////////////////////////////////////////////////////////////////////

# variables ////////////////////////////////////////////////////////////////////

stamp=$(date +"%m-%d-%Y-%H-%M-%S")

# defaults /////////////////////////////////////////////////////////////////////

list=(
	gsettings
)

frobulator.require ${list[@]}

list=()

# functions ////////////////////////////////////////////////////////////////////

cat <<- 'FILE' > /usr/bin/background-cycler
#!/bin/bash

# background cycler #

directory=$(zenity --file-selection --separator=$'\n' --title="Select a Directory") 2> /dev/null

gsettings set org.gnome.desktop.background picture-options "zoom"

while true
do
	picture="$(ls $directory | sort -R | head -n 1)"

	gsettings set org.gnome.desktop.background picture-uri "file://${picture}"

	sleep 60
done
FILE

# set permissions

sudo chmod +x /usr/bin/background-cycler

# write launcher

cat <<- FILE > /usr/share/applications/background-cycler.desktop
[Desktop Entry]
Name=Background Cycler
Comment=Enable timed background cycling
Exec=/usr/bin/background-cycler
Icon=background
Terminal=false
Type=Application
StartupNotify=true
Categories=Utility;
FILE