Standardize CT update backup handling (#15937)

ct/wishlist.sh

@@ -35,16 +35,13 @@ function update_script() {
     systemctl stop wishlist
     msg_ok "Stopped Service"
 
-    msg_info "Creating Backup"
-    mkdir -p /opt/wishlist-backup
-    cp /opt/wishlist/.env /opt/wishlist-backup/.env
-    cp -a /opt/wishlist/uploads /opt/wishlist-backup
-    cp -a /opt/wishlist/data /opt/wishlist-backup
-    msg_ok "Created Backup"
+    create_backup /opt/wishlist/.env /opt/wishlist/uploads /opt/wishlist/data
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "wishlist" "cmintey/wishlist" "tarball"
     LATEST_APP_VERSION=$(get_latest_github_release "cmintey/wishlist")
 
+    restore_backup
+
     msg_info "Updating Wishlist"
     cd /opt/wishlist
     $STD pnpm install --frozen-lockfile
@@ -56,13 +53,6 @@ function update_script() {
     $STD pnpm run build
     $STD pnpm prune --prod
     chmod +x /opt/wishlist/entrypoint.sh
-
-    msg_info "Restoring Backup"
-    cp /opt/wishlist-backup/.env /opt/wishlist/.env
-    cp -a /opt/wishlist-backup/uploads /opt/wishlist
-    cp -a /opt/wishlist-backup/data /opt/wishlist
-    rm -rf /opt/wishlist-backup
-    msg_ok "Restored Backup"
     
     msg_ok "Updated Wishlist"
     msg_info "Starting Service"