feat(POS-002): completed feature

project/migrations/046_pos_backoffice_roles.js

@@ -0,0 +1,45 @@
+/**
+ * POS-002 — Extend `backoffice_users.role` CHECK to include POS roles.
+ *
+ * New roles: `pos_cashier`, `pos_manager`. The application-side enum
+ * (`Role` in `project/src/shared/auth.ts`) is updated in the same ticket.
+ *
+ * Idempotent: `IF EXISTS` on the old constraint + `IF NOT EXISTS` guard on
+ * the new one.
+ *
+ * @param {import('node-pg-migrate').MigrationBuilder} pgm
+ */
+
+export const up = (pgm) => {
+  pgm.sql(`ALTER TABLE backoffice_users DROP CONSTRAINT IF EXISTS backoffice_users_role_check`);
+  pgm.sql(`
+    DO $$
+    BEGIN
+      IF NOT EXISTS (
+        SELECT 1 FROM pg_constraint
+        WHERE conname = 'backoffice_users_role_check'
+      ) THEN
+        ALTER TABLE backoffice_users
+          ADD CONSTRAINT backoffice_users_role_check
+          CHECK (role IN ('admin','editor','pos_cashier','pos_manager'));
+      END IF;
+    END $$
+  `);
+};
+
+export const down = (pgm) => {
+  pgm.sql(`ALTER TABLE backoffice_users DROP CONSTRAINT IF EXISTS backoffice_users_role_check`);
+  pgm.sql(`
+    DO $$
+    BEGIN
+      IF NOT EXISTS (
+        SELECT 1 FROM pg_constraint
+        WHERE conname = 'backoffice_users_role_check'
+      ) THEN
+        ALTER TABLE backoffice_users
+          ADD CONSTRAINT backoffice_users_role_check
+          CHECK (role IN ('admin','editor'));
+      END IF;
+    END $$
+  `);
+};