background/lock: added lock bg script and updated classic one

.local/bin/tools/setbg

@@ -1,13 +1,6 @@
 #!/bin/sh
 
-# In LARBS, ~/.config/wall.png is the location of the system wallpaper.  This
-# script, if given an argument, moves it there.  This script without an
-# argument sets ~/.config/wall.png as the wallpaper, which is required on login
-# if you don't want a black screen.
-#
-# You may also give a directory name to select a random image from that
-# directory as a wallpaper. Be careful that the directory only has images.
-# by lukesmithxyz, checkout github.com/lukesmithxyz/voidrice
+# Based on a script by lukesmithxyz, checkout github.com/lukesmithxyz/voidrice
 
 bgloc="${XDG_DATA_HOME:-$HOME/.local/share}/bg"
 

.local/bin/tools/setlock

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# Based on a script by lukesmithxyz, checkout github.com/lukesmithxyz/voidrice
+
+bgloc="${XDG_DATA_HOME:-$HOME/.local/share}/lock"
+
+
+trueloc="$(readlink -f "$1")" &&
+case "$(file --mime-type -b "$trueloc")" in
+	image/* ) ln -f "$(readlink -f "$1")" "$bgloc" && notify-send -i "$bgloc" "Changing lock background..." ;;
+	inode/directory ) ln -f "$(find "$trueloc" -iregex '.*.\(jpg\|jpeg\|png\|gif\)' -type f | shuf -n 1)" "$bgloc" && notify-send -i "$bgloc" "Random lock background chosen." ;;
+	*) notify-send "🖼️ Error" "Not a valid image or directory." ; exit 1;;
+esac