bin/periodic/fix-tweaked-desktop-files

@@ -1,31 +1,29 @@
 #!/bin/bash
 pidof -sq -o %PPID -x "$(basename "$0")" && exit
-data="$HOME"/.local/share/applications/tweaked-desktop-files
-data2="$HOME"/.local/share/applications/bakkedup-desktop-files
+datastore="$HOME"/.local/share/desktop-file-data
+bakdir="$datastore"/backup
+data="$datastore"/tweaked-desktop-files
+
+mkdir -p "$bakdir" || { echo "failed to make directory $bakdir"; exit 1; }
 
 # Directories where desktop files are stored
 user="$HOME"/.local/share/applications
-flatpak_local="$HOME"/.local/share/flatpak/exports/share/applications
-flatpak_global=/var/lib/flatpak/exports/share/applications
-pacman_local=/usr/local/share/applications
 pacman_global=/usr/share/applications
+pacman_local=/usr/local/share/applications
+flatpak_global=/var/lib/flatpak/exports/share/applications
+flatpak_local="$HOME"/.local/share/flatpak/exports/share/applications
 snap=/var/lib/snapd/desktop/applications
 
 detectfiles() {
 	for file in "$user"/*.desktop; do
 		name=$(basename "$file") || continue
-		[ -d "$file" ] || grep -xq "\(flatpak-local\|flatpak-global\|pacman-local\|pacman-global\|snap\)/$name" "$data" && continue
-		if [ -f "$flatpak_local/$name" ]; then
-			echo "flatpak-local/$name" >> "$data"
-		elif [ -f "$flatpak_global/$name" ]; then
-			echo "flatpak-global/$name" >> "$data"
-		elif [ -f "$pacman_local/$name" ]; then
-			echo "pacman-local/$name" >> "$data"
-		elif [ -f "$pacman_global/$name" ]; then
-			echo "pacman-global/$name" >> "$data"
-		elif [ -f "$snap/$name" ]; then
-			echo "snap/$name" >> "$data"
-		fi
+		[ -d "$file" ] || grep -xq "$name" "$data" && continue
+		[ -f "$pacman_global/$name" ] ||
+			[ -f "$pacman_local/$name" ] ||
+			[ -f "$flatpak_global/$name" ] ||
+			[ -f "$flatpak_local/$name" ] ||
+			[ -f "$snap/$name" ] &&
+			echo "$name" >> "$data"
 	done
 }
 
@@ -35,55 +33,42 @@ fixfiles() {
 	trap 'rm $tmp' EXIT
 	[ -f "$data" ] && cp "$data" "$tmp" && copied='true'
 	lineno=0
-	[ "$copied" = 'true' ] && while IFS= read -r line; do
+	[ "$copied" = 'true' ] && while IFS= read -r name; do
 		((lineno++))
-		name=${line#*/}
 		file="$user/$name"
-		# shellcheck disable=2015 # To disable shellcheck error here, line below is intended to work this way
-		echo "$line" | grep -xq '\(flatpak-local\|flatpak-global\|pacman-local\|pacman-global\|snap\)/.\+' && [ -f "$file" ] || { sed -i "${lineno}d" "$tmp" && ((lineno--)) ; continue; }
-		[ -f "$flatpak_local/$name" ] ||
-			[ -f "$flatpak_global/$name" ] ||
+		[ -f "$file" ] || { sed -i "${lineno}d" "$tmp" && ((lineno--)) ; continue; }
+		[ -f "$pacman_global/$name" ] ||
 			[ -f "$pacman_local/$name" ] ||
-			[ -f "$pacman_global/$name" ] ||
+			[ -f "$flatpak_global/$name" ] ||
+			[ -f "$flatpak_local/$name" ] ||
 			[ -f "$snap/$name" ] ||
-			{ mv "$file" "$file.bak" && echo "$line" >> "$data2"; }
+			mv "$file" "$bakdir/$file.bak"
 	done < "$data"
 
 	[ "$copied" = 'true' ] && [ "$(stat -c '%Y' "$data")" = "$lastmod" ] && sort "$tmp" | uniq > "$data"
 
-	[ -n "$(sort "$data2" | uniq -d)" ] && cp "$data2" "$tmp" && sort "$tmp" | uniq > "$data2"
-
-	for bakfile in "$user"/*.desktop.bak; do
-		origfile="${bakfile%.bak}"
+	for bakfile in "$bakdir"/*.desktop.bak; do
+		name=$(basename "${bakfile%.bak}") || continue
+		origfile="$user/$name"
 		[ -f "$origfile" ] && continue
-		name=$(basename "$origfile") || continue
-		[ -f "$flatpak_local/$name" ] ||
-			[ -f "$flatpak_global/$name" ] ||
+		[ -f "$pacman_global/$name" ] ||
 			[ -f "$pacman_local/$name" ] ||
-			[ -f "$pacman_global/$name" ] ||
+			[ -f "$flatpak_global/$name" ] ||
+			[ -f "$flatpak_local/$name" ] ||
 			[ -f "$snap/$name" ] &&
 			mv "$bakfile" "$origfile"
 	done
 }
 
-while :; do
-	user_new=$(ls -ad "$user"/*.desktop 2>/dev/null)
-	flatpak_local_new=$(ls -ad "$flatpak_local"/*.desktop 2>/dev/null)
-	flatpak_global_new=$(ls -ad "$flatpak_global"/*.desktop 2>/dev/null)
-	pacman_local_new=$(ls -ad "$pacman_local"/*.desktop 2>/dev/null)
-	pacman_global_new=$(ls -ad "$pacman_global"/*.desktop 2>/dev/null)
-	snap_new=$(ls -ad "$snap"/*.desktop 2>/dev/null)
-	[ "$user_new" != "$user_old" ] && detectfiles
-	[ "$flatpak_local_new" != "$flatpak_local_old" ] ||
-		[ "$flatpak_global_new" != "$flatpak_global_old" ] ||
-		[ "$pacman_local_new" != "$pacman_local_old" ] ||
-		[ "$pacman_global_new" != "$pacman_global_old" ] ||
-		[ "$snap_new" != "$snap_old" ] && fixfiles
-	user_old=$user_new
-	flatpak_local_old=$flatpak_local_new
-	flatpak_global_old=$flatpak_global_new
-	pacman_local_old=$pacman_local_new
-	pacman_global_old=$pacman_global_new
-	snap_old=$snap_new
-	sleep 5
+existing_dirs=()
+for dir in "$user" "$pacman_global" "$pacman_local" "$flatpak_global" "$flatpak_local" "$snap"; do
+	[ -d "$dir" ] && existing_dirs=("${existing_dirs[@]}" "$dir")
 done
+
+while read -r line; do
+	if [ "$line" = "$user/" ]; then
+		detectfiles
+	else
+		fixfiles
+	fi
+done < <(inotifywait -qm --format '%w' --include '\.desktop$' -e 'move,move_self,create,delete,delete_self,unmount' "${existing_dirs[@]}")