feat: initial commit

api/src/chat/validation-rules/is-valid-message-text.ts

@@ -0,0 +1,30 @@
+/*
+ * Copyright © 2024 Hexastack. All rights reserved.
+ *
+ * Licensed under the GNU Affero General Public License v3.0 (AGPLv3) with the following additional terms:
+ * 1. The name "Hexabot" is a trademark of Hexastack. You may not use this name in derivative works without express written permission.
+ * 2. All derivative works must include clear attribution to the original creator and software, Hexastack and Hexabot, in a prominent location (e.g., in the software's "About" section, documentation, and README file).
+ * 3. SaaS Restriction: This software, or any derivative of it, may not be used to offer a competing product or service (SaaS) without prior written consent from Hexastack. Offering the software as a service or using it in a commercial cloud environment without express permission is strictly prohibited.
+ */
+
+import { registerDecorator, ValidationOptions } from 'class-validator';
+
+import {
+  StdIncomingMessage,
+  StdOutgoingTextMessage,
+} from '../schemas/types/message';
+
+export function IsValidMessageText(validationOptions?: ValidationOptions) {
+  return function (object: object, propertyName: string) {
+    registerDecorator({
+      target: object.constructor,
+      propertyName,
+      options: validationOptions,
+      validator: {
+        validate(message: StdOutgoingTextMessage | StdIncomingMessage) {
+          return !!(message as StdOutgoingTextMessage).text;
+        },
+      },
+    });
+  };
+}