#!/bin/sh

# This script does the following:
#   - Run by itself, set the wallpaper (at X start).
#   - If given a file, set that as the new wallpaper.
#   - If given a directory, choose random file in it.
#   - If wal is installed, also generate a colorscheme.

# Location of link to wallpaper.
bgloc="${XDG_CACHE_HOME:-$HOME/.cache/}bg"

[ ! -L "$bgloc" ] && [ ! -e "$1" ] && echo 'Please provide a valid image or directory.' && exit 1

[ -f "$1" ] && ln -sf "$(readlink -f "$1")" "$bgloc"

[ -d "$1" ] && ln -sf "$(find "$(readlink -f "$1")" -iregex '.*.\(jpg\|jpeg\|png\)' -type f | shuf -n 1)" "$bgloc"

# If pywal is installed, use it.
[ $(command -v wal) ] && wal -qsi "$(readlink -f "$bgloc")" -o "${XDG_CONFIG_HOME:-$HOME/.config}/wal/postrun"

# Kill notification daemon (it should restart automatically).
pkill dunst

xwallpaper --zoom "$bgloc" &
notify-send -u low -i "$bgloc" 'Wallpaper updated' "$(basename "$(readlink -f "$bgloc")")"