Added protecting hooks

dist/modules/hooks/validateUniqueRole.js

@@ -0,0 +1,31 @@
+import { APIError } from 'payload';
+/**
+ * Field hook for a System Page role relationship in SiteSettings: ensures a page
+ * isn't assigned to two roles at once (e.g. the same page as both homepage and
+ * privacyPolicy), which would make routing ambiguous.
+ *
+ * Attach to each role field's beforeValidate. `siblingFields` are the OTHER role
+ * field names to check against.
+ *
+ *   hooks: { beforeValidate: [buildValidateUniqueRole({
+ *     siblingFields: ['privacyPolicy', 'cookiePolicy', 'termsOfService'],
+ *   })] }
+ */ export function buildValidateUniqueRole(args) {
+    return ({ field, siblingData, value })=>{
+        if (value == null) {
+            return value;
+        }
+        const thisId = typeof value === 'object' ? value.id : value;
+        for (const sibling of args.siblingFields){
+            const other = siblingData?.[sibling];
+            const otherId = other && typeof other === 'object' ? other.id : other;
+            if (otherId != null && String(otherId) === String(thisId)) {
+                const name = typeof field === 'object' && 'name' in field ? field.name : 'ta rola';
+                throw new APIError(`Ta sama strona jest przypisana do "${name}" i "${sibling}". ` + `Każda rola systemowa musi wskazywać inną stronę.`, 400);
+            }
+        }
+        return value;
+    };
+}
+
+//# sourceMappingURL=validateUniqueRole.js.map