fix(interactions): add async responses

packages/interactions/utils/interactions.ts

@@ -1,5 +1,12 @@
 import { publicKey } from '@roleypoly/interactions/utils/config';
-import { InteractionRequest } from '@roleypoly/types';
+import {
+  InteractionCallbackType,
+  InteractionFlags,
+  InteractionRequest,
+  InteractionRequestCommand,
+  InteractionResponse,
+} from '@roleypoly/types';
+import { AuthType, discordFetch, HandlerTools } from '@roleypoly/worker-utils';
 import nacl from 'tweetnacl';
 
 export const verifyRequest = (
@@ -25,3 +32,47 @@ export const verifyRequest = (
 
   return true;
 };
+
+export type RequestInfo = HandlerTools & { request: Request };
+
+export type CommandHandler = (
+  request: InteractionRequestCommand,
+  requestInfo: RequestInfo
+) => Promise<InteractionResponse>;
+
+export const asyncResponse =
+  (handler: CommandHandler): CommandHandler =>
+  async (
+    command: InteractionRequestCommand,
+    requestInfo: RequestInfo
+  ): Promise<InteractionResponse> => {
+    requestInfo.waitUntil(
+      (async () => {
+        const response = await handler(command, requestInfo);
+        await updateOriginalMessage(command.application_id, command.token, response);
+      })()
+    );
+
+    return {
+      type: InteractionCallbackType.DEFERRED_CHANNEL_MESSAGE_WITH_SOURCE,
+      data: {
+        flags: InteractionFlags.EPHEMERAL,
+      },
+    };
+  };
+
+const updateOriginalMessage = async (
+  appID: string,
+  token: string,
+  response: InteractionResponse
+) => {
+  const url = `/webhooks/${appID}/${token}/messages/@original`;
+
+  return await discordFetch(url, '', AuthType.None, {
+    method: 'PATCH',
+    body: JSON.stringify(response.data),
+    headers: {
+      'content-type': 'application/json',
+    },
+  });
+};