fix: ensure retro-compatibility (we hope)

api/src/channel/lib/Handler.ts

@@ -235,6 +235,19 @@ export default abstract class ChannelHandler<
     event: EventWrapper<any, any, N>,
   ): Promise<AttachmentFile | undefined>;
 
+  /**
+   * Fetch the subscriber profile data
+   *
+   * @deprecated
+   * @param event - The message event received
+   * @returns {Promise<Subscriber>} - The channel's response, otherwise an error
+   */
+  async getUserData(
+    event: EventWrapper<any, any, N>,
+  ): Promise<SubscriberCreateDto> {
+    return await this.getSubscriberData(event);
+  }
+
   /**
    * Fetch the subscriber profile data
    *

api/src/chat/schemas/types/attachment.ts

@@ -31,7 +31,11 @@ export type AttachmentRef =
       url: string;
     };
 
-export interface AttachmentPayload {
+/** IMPORTANT: No need to use generic type here */
+export interface AttachmentPayload<T extends AttachmentRef = AttachmentRef> {
   type: FileType;
-  payload: AttachmentRef;
+  payload: T;
 }
+
+/** @deprecated */
+export type WithUrl<A> = A & { url?: string };