#!/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 generates a colorscheme.

# Location of link to wallpaper link.
bgloc="${XDG_DATA_HOME:-$HOME/.local/share/}/bg"

trueloc="$(readlink -f "$1")" &&
case "$(file --mime-type -b "$trueloc")" in
    image/* ) ln -sf "$(readlink -f "$1")" "$bgloc" ;;
    inode/directory ) trueloc=$(find "$trueloc" -iregex '.*.\(jpg\|jpeg\|png\|gif\)' -type f | shuf -n 1) && ln -sf "$trueloc" "$bgloc" ;;
    *) notify-send "Error" "Not a valid image." ; exit 1;;
esac

[ -z "$trueloc" ] && trueloc="$(readlink -f "$bgloc")"

# If pywal is installed, use it.
command -v wal >/dev/null 2>&1 &&
    wal -i "$trueloc" -n -o "${XDG_CONFIG_HOME:-$HOME/.config}/wal/postrun" >/dev/null 2>&1 &&
    dwmc xrdb

xwallpaper --zoom "$bgloc"