eadir extraction working

extract_eadir_to_tmp.sh

@@ -0,0 +1,51 @@
+#!/bin/bash
+
+# Extract existing Synology thumbnails from @eaDir into eaDir_tmp so thumbgen skips regeneration
+# Usage: ./extract_eadir_to_tmp.sh /volume1/YourShare/path
+
+set -euo pipefail
+
+if [ $# -eq 0 ]; then
+    echo "Usage: $0 <directory_path>"
+    exit 1
+fi
+
+TARGET_DIR="$1"
+
+if [ ! -d "$TARGET_DIR" ]; then
+    echo "Error: '$TARGET_DIR' is not a directory"
+    exit 1
+fi
+
+echo "=== Extracting @eaDir thumbnails to eaDir_tmp ==="
+echo "Target: $TARGET_DIR"
+
+# For every @eaDir/<name> directory, copy known thumbnail files to eaDir_tmp/<name>
+find "$TARGET_DIR" -type d -name '@eaDir' -print0 | while IFS= read -r -d '' EADIR; do
+    PARENT_DIR="$(dirname "$EADIR")"
+
+    # Each immediate subdir under @eaDir corresponds to a source filename
+    find "$EADIR" -mindepth 1 -maxdepth 1 -type d -print0 | while IFS= read -r -d '' ENTRY; do
+        BASENAME="$(basename "$ENTRY")"
+        DEST_DIR="$PARENT_DIR/eaDir_tmp/$BASENAME"
+
+        mkdir -p "$DEST_DIR"
+
+        # Copy without overwriting existing files in eaDir_tmp
+        for F in \
+            SYNOVIDEO_VIDEO_SCREENSHOT.jpg \
+            SYNOPHOTO_THUMB_XL.jpg \
+            SYNOPHOTO_THUMB_B.jpg \
+            SYNOPHOTO_THUMB_M.jpg \
+            SYNOPHOTO_THUMB_PREVIEW.jpg \
+            SYNOPHOTO_THUMB_S.jpg; do
+            if [ -f "$ENTRY/$F" ] && [ ! -f "$DEST_DIR/$F" ]; then
+                cp "$ENTRY/$F" "$DEST_DIR/$F"
+            fi
+        done
+    done
+done
+
+echo "=== Done. Existing thumbnails copied into eaDir_tmp where available. ==="
+
+