bin: update cdtemp

Moves the folder to Workspace/temp instead and adds a prune command for
clearing out empty directories.

.local/bin/cdtemp

@@ -1,12 +1,19 @@
 #!/usr/bin/env bash
 
+TEMPSPACE=$HOME/Workspace/temp
+
 set -euo pipefail
 
-if [ "${1:-}" = "last" ]; then
-  dir=$(ls "$HOME/Tempspace" | tail -n 1)
-  cd "$HOME/Tempspace/$dir"
+cmd="${1:-}"
+
+if [ "$cmd" = "last" ]; then
+  dir=$(find "$TEMPSPACE" -type d -mindepth 1 -maxdepth 1 | sort | tail -n 1)
+  cd "$dir"
+elif [ "$cmd" = "prune" ]; then
+  echo "Deleting empty directories"
+  find "$TEMPSPACE" -type d -mindepth 1 -maxdepth 1 -empty -delete -print
 else
-  dir="$HOME/Tempspace/$(date +%s)"
+  dir="$TEMPSPACE/$(date +%s)"
   mkdir "$dir"
   cd "$dir"
 fi