fix: allow preview chat with agents

packages/builder/src/pages/builder/workspace/[application]/agent/[agentId]/AgentChatPanel.svelte

@@ -61,7 +61,7 @@
   </div>
   <div class="chat-preview-body">
     {#key refreshKey}
-      <Chatbox bind:chat persistConversation={false} {workspaceId} />
+      <Chatbox bind:chat persistConversation={false} preview {workspaceId} />
     {/key}
   </div>
 </div>

packages/frontend-core/src/components/Chatbox/index.svelte

@@ -30,6 +30,7 @@
     workspaceId: string
     chat: ChatConversationLike
     persistConversation?: boolean
+    preview?: boolean
     conversationStarters?: { prompt: string }[]
     onchatsaved?: (_event: {
       detail: { chatId?: string; chat: ChatConversationLike }
@@ -40,6 +41,7 @@
     workspaceId,
     chat = $bindable(),
     persistConversation = true,
+    preview = false,
     conversationStarters = [],
     onchatsaved,
   }: Props = $props()
@@ -84,6 +86,7 @@
             chatAppId,
             agentId: chat?.agentId,
             transient: !persistConversation,
+            preview: preview && !persistConversation,
             title: chat?.title,
             messages,
           },

packages/server/src/api/controllers/ai/chatConversations.ts

@@ -3,6 +3,8 @@ import {
   docIds,
   getErrorMessage,
   HTTPError,
+  users,
+  utils,
 } from "@budibase/backend-core"
 import { v4 } from "uuid"
 import { ai } from "@budibase/pro"
@@ -203,7 +205,16 @@ export async function agentChatStream(ctx: UserCtx<ChatAgentRequest, void>) {
     throw new HTTPError("agentId is required", 400)
   }
 
+  const workspaceId = context.getWorkspaceId()
+  const allowPreview =
+    !!chat.preview &&
+    !!chat.transient &&
+    !!workspaceId &&
+    users.isBuilder(ctx.user, workspaceId) &&
+    !utils.isClient(ctx)
+
   if (
+    !allowPreview &&
     !chatApp.agents?.some(agent => agent.agentId === agentId && agent.isEnabled)
   ) {
     throw new HTTPError("agentId is not enabled for this chat app", 400)

packages/types/src/documents/global/chat.ts

@@ -28,6 +28,7 @@ export interface ChatConversationRequest extends Document {
   title?: string
   messages: UIMessage<AgentMessageMetadata>[]
   transient?: boolean
+  preview?: boolean
 }
 
 export type CreateChatConversationRequest = Pick<