Permanent process for speed

bin/omarchy-menu-images

@@ -36,7 +36,11 @@ if (( ${#image_dirs[@]} == 0 )); then
 fi
 
 selection_file=$(mktemp)
-trap 'rm -f "$selection_file"' EXIT
+done_file=$(mktemp)
+rm -f "$done_file"
+trap 'rm -f "$selection_file" "$done_file"' EXIT
+socket_path="${XDG_RUNTIME_DIR:-/run/user/$UID}/omarchy-image-selector.sock"
+selector_qml="$OMARCHY_PATH/default/quickshell/wallpaper-switcher.qml"
 
 image_dirs_env=""
 for dir in "${image_dirs[@]}"; do
@@ -60,26 +64,103 @@ if [[ -n $current_image ]]; then
 fi
 
 cache_dir=${XDG_CACHE_HOME:-$HOME/.cache}/omarchy/image-selector
+index_file="$cache_dir/index.tsv"
+rows=""
 mkdir -p "$cache_dir"
 
+cache_key=$(printf '%s' "$image_dirs_env" | md5sum | cut -d ' ' -f 1)
+rows_cache_file="$cache_dir/$cache_key.rows"
+rows_signature_file="$cache_dir/$cache_key.signature"
+rows_signature=""
+
 for dir in "${image_dirs[@]}"; do
   if [[ -d $dir ]]; then
-    while IFS= read -r -d '' image; do
-      hash=$(md5sum "$image" | cut -d ' ' -f 1)
-      thumbnail="$cache_dir/$hash.jpg"
-
-      if [[ ! -f $thumbnail ]]; then
-        magick "$image" -auto-orient -resize '1536x864^' -gravity center -extent '1536x864' -strip -quality 82 "$thumbnail"
-      fi
-    done < <(find -L "$dir" -maxdepth 1 -type f \( -iname '*.jpg' -o -iname '*.jpeg' -o -iname '*.png' -o -iname '*.webp' \) -print0 2>/dev/null)
+    rows_signature+="$dir:$(stat -Lc '%Y' "$dir")"$'\n'
   fi
 done
 
-OMARCHY_IMAGE_SELECTOR_SELECTION_FILE=$selection_file \
-  OMARCHY_IMAGE_SELECTOR_DIRS="$image_dirs_env" \
-  OMARCHY_IMAGE_SELECTOR_SELECTED="$selected_list_image" \
-  OMARCHY_IMAGE_SELECTOR_COLORS_FILE="$colors_file" \
-  quickshell -p "$OMARCHY_PATH/default/quickshell/wallpaper-switcher.qml" >/dev/null
+thumbnail_for() {
+  local image="$1"
+  local signature hash thumbnail
+
+  signature=$(stat -Lc '%s:%Y' "$image") || return
+  hash=$(awk -F '\t' -v path="$image" -v sig="$signature" '$1 == path && $2 == sig { print $3; exit }' "$index_file" 2>/dev/null)
+
+  if [[ -z $hash ]]; then
+    hash=$(md5sum "$image" | cut -d ' ' -f 1)
+    printf '%s\t%s\t%s\n' "$image" "$signature" "$hash" >>"$index_file"
+  fi
+
+  thumbnail="$cache_dir/$hash.jpg"
+
+  if [[ ! -f $thumbnail ]]; then
+    magick "$image" -auto-orient -resize '1536x864^' -gravity center -extent '1536x864' -strip -quality 82 "$thumbnail"
+  fi
+
+  printf '%s' "$thumbnail"
+}
+
+if [[ -f $rows_cache_file && -f $rows_signature_file ]] && cmp -s "$rows_signature_file" <(printf '%s' "$rows_signature"); then
+  rows=$(<"$rows_cache_file")
+else
+  for dir in "${image_dirs[@]}"; do
+    if [[ -d $dir ]]; then
+      while IFS= read -r -d '' image; do
+        thumbnail=$(thumbnail_for "$image")
+        [[ -n $thumbnail ]] || continue
+
+        if [[ -z $rows ]]; then
+          rows="$image"$'\t'"$thumbnail"
+        else
+          rows+=$'\n'"$image"$'\t'"$thumbnail"
+        fi
+      done < <(find -L "$dir" -maxdepth 1 -type f \( -iname '*.jpg' -o -iname '*.jpeg' -o -iname '*.png' -o -iname '*.webp' \) -print0 2>/dev/null)
+    fi
+  done
+
+  printf '%s' "$rows" >"$rows_cache_file"
+  printf '%s' "$rows_signature" >"$rows_signature_file"
+fi
+
+rows_payload=${rows//$'\t'/$'\f'}
+rows_payload=${rows_payload//$'\n'/$'\v'}
+
+selector_pid=$(quickshell list -p "$selector_qml" --json 2>/dev/null | jq -r '.[0].pid // empty')
+if [[ -n $selector_pid ]]; then
+  selector_age=$(ps -o etimes= -p "$selector_pid" 2>/dev/null | tr -d ' ')
+  qml_mtime=$(stat -c %Y "$selector_qml")
+  now=$(date +%s)
+
+  if [[ -n $selector_age ]] && (( now - selector_age < qml_mtime )); then
+    quickshell kill -p "$selector_qml" >/dev/null 2>&1 || true
+    rm -f "$socket_path"
+  fi
+fi
+
+if [[ ! -S $socket_path ]]; then
+  quickshell kill -p "$selector_qml" >/dev/null 2>&1 || true
+  quickshell -d -p "$selector_qml" >/dev/null
+
+  for ((i = 0; i < 100; i++)); do
+    if [[ -S $socket_path ]]; then
+      break
+    fi
+
+    sleep 0.01
+  done
+fi
+
+if [[ ! -S $socket_path ]]; then
+  echo "Image selector failed to start" >&2
+  exit 1
+fi
+
+printf '%s\t%s\t%s\t%s\t%s\n' "$rows_payload" "$selected_list_image" "$selection_file" "$done_file" "$colors_file" |
+  socat -u - "UNIX-CONNECT:$socket_path"
+
+while [[ ! -e $done_file ]]; do
+  sleep 0.01
+done
 
 if [[ -s $selection_file ]]; then
   cat "$selection_file"