shell/mpd/bin/cleanup-music.sh: ask for confirmation

shell/mpd/bin/cleanup-music.sh

@@ -4,27 +4,50 @@
 # it leaves behind.
 
 set -e
+shopt -s nullglob
 
-playlistdir="$(grep playlist_directory $HOME/.config/mpd/mpd.conf | awk '{ print $2; }')"
+playlistdir=$(grep playlist_directory "$HOME/.config/mpd/mpd.conf" | awk '{ print $2; }')
 playlistdir="${playlistdir//\"/}"
-playlistfile="$playlistdir/1-star.m3u"
+playlistfile="${playlistdir/#\~/$HOME}/1-star.m3u"
-songs=$(<"$playlistfile")
+songs=$(cat "$playlistfile")
 
 # Delete designated songs
 IFS="
 "
-for song in ${songs[@]}; do
+declare -a to_delete=()
+for song in "${songs[@]}"; do
     fpath="$HOME/music/$song"
     if [[ -f $fpath ]]; then
-        echo "Deleting: $song"
+        to_delete+=("$fpath")
-        rm -f "$fpath"
+        # echo "Deleting: $song"
+        # rm -f "$fpath"
     fi
 done
+
+if (( ${#to_delete[@]} == 0 )); then
+    echo "Nothing to delete"
+    exit
+fi
+
+printf "Deleting %s songs:\n\n%s\n\nConfirm? (y/n) " \
+    "${#to_delete[@]}" \
+    "$(IFS=$'\n'; printf "%s" "${to_delete[*]}")"
+read -r confirm
+case $confirm in
+    y|Y)
+        echo "Deleting..."
+        for file in ${to_delete[@]}; do
+            rm -fv "$file"
+        done
+        ;;
+    n|N) echo "Aborted"; exit ;;
+    *) echo "Invalid" ;;
+esac
 :>"$playlistfile"
 
 # Remove duplicates in playlists
 for playlist in "$playlistdir"/*.m3u; do
-    awk '!seen[$0]++' "$playlist" > "${playlist}.tmp"
+    awk '!seen[$0]++' "${playlist}" > "${playlist}.tmp"
     if [[ -f "${playlist}.tmp" ]]; then
         rm -f "$playlist"
         mv "${playlist}.tmp" "$playlist"