#!/bin/sh

wallDir="${XDG_CONFIG_HOME:-$HOME}/wallpapers"

# Acquire the list of connected displays
displays="$(wlr-randr --json | jq -r '.[] | select(.enabled) | .name')"
echo "$displays"

# If there is a wallpaper with a filename matching the display
# name, set it as the wallpaper for that display.
# ex: DP-1.jpg and DP-1.png are both valid filenames
# Otherwise, set the wallpaper to the default wallpaper
# (default.png or default.jpg)
setDisplay() {
	case $(ls $wallDir) in
	*"$1"*)
		wall=$(ls $wallDir | grep "$1" | head -n 1)
		;;
	*)
		wall=$(ls $wallDir | grep "default" | head -n 1)
		;;
	esac
  swaybg --output $1 -m fill --image $wallDir/$wall &
}

# Set the wallpaper for each display
killall swaybg > /dev/null 2>&1
for display in $displays; do
	setDisplay $display
done