remove backups cleanup script and move to main backup-synapse script

fix remove files in cleanup stage than near to be removed

backup-synapse.sh

@@ -3,6 +3,10 @@ set -euo pipefail
 
 ### CONFIG ###
 DATE=$(date +%F)
+
+# for deleting older files
+DRY_RUN=false
+KEEP_COUNT=1
 #BASE_BACKUP_DIR="$HOME/backups/synapse"
 BASE_BACKUP_DIR="/mnt/disk/backups/synapse"
 BACKUP_DIR="$BASE_BACKUP_DIR/$DATE"
@@ -18,18 +22,51 @@ NGINX_DIR="/etc/nginx"
 LETSENCRYPT_DIR="/etc/letsencrypt"
 
 
-### remove old files ###
-cd $BASE_BACKUP_DIR
-echo "▶ Running cleanup script ..."
-
-./cleanup-backups.sh --run
-
-### PREP ###
+### Startup Info ###
 echo "📦 Synapse backup started"
 echo "📅 Date: $DATE"
+echo "📁 Base Backups dir: $BASE_BACKUP_DIR"
 echo "📁 Backup dir: $BACKUP_DIR"
 echo
 
+### remove old files ###
+cd $BASE_BACKUP_DIR
+echo "▶ cleanup older backup files ..."
+
+cd $BASE_BACKUP_DIR
+
+# Count the number of existing backups
+TOTAL_BACKUPS=$(find . -name 'full-backup-*.tar.gz' | wc -l)
+echo "Existing backup files ($TOTAL_BACKUPS) :"
+# Find all full-backup-*.tar.gz files and list them
+find . -name 'full-backup-*.tar.gz'| sort -k2,2 -t. -n -r | while IFS= read -r file; do
+  echo "- $file"
+done
+echo 
+
+# Find and list files that should be removed
+echo "Files that will be deleted:"
+files_to_delete=()
+while IFS= read -r -d $'\0' dir; do
+  files_to_delete+=("$dir")
+  echo "- $dir"
+done < <(find . -name 'full-backup-*.tar.gz' -newermt "$(( $KEEP_COUNT+1 )) days ago" ! -newermt "$KEEP_COUNT days ago" -print0)
+echo
+
+# Delete the files in dry-run mode or actually delete them
+for file in "${files_to_delete[@]}"; do
+  if [ "$DRY_RUN" = true ]; then
+  echo "Will be deleted (Dry-Run): $file"
+  else
+    rm "$file"
+    echo "Deleted $file"
+  fi
+done
+echo
+
+echo "Cleanup completed."
+
+### PREP ###
 mkdir -p "$BACKUP_DIR"
 
 cd "$SYNAPSE_DIR"
@@ -89,7 +126,6 @@ echo "✅ Full archive created"
 echo
 
 ### Remove the backup dir after full archive
-cd $BASE_BACKUP_DIR
 
 echo "📦 Removing the Backup directory: $DATE"
 sudo rm -r $BACKUP_DIR