From 4c80946b4bcb346427fd3c19b9a9642c20f5d63e Mon Sep 17 00:00:00 2001
From: Aiden Cline <aidenpcline@gmail.com>
Date: Wed, 1 Jul 2026 11:56:53 -0500
Subject: [PATCH] fix(tui): render submitted prompts optimistically

---
 packages/tui/src/component/prompt/index.tsx | 29 ++++++++++++++-------
 packages/tui/src/routes/session/index.tsx   | 27 +++++++++++++++++--
 2 files changed, 44 insertions(+), 12 deletions(-)

diff --git a/packages/tui/src/component/prompt/index.tsx b/packages/tui/src/component/prompt/index.tsx
index 53c6a520cb..0b45428038 100644
--- a/packages/tui/src/component/prompt/index.tsx
+++ b/packages/tui/src/component/prompt/index.tsx
@@ -37,7 +37,7 @@ import { usePromptStash } from "../../prompt/stash"
 import { DialogStash } from "../dialog-stash"
 import { type AutocompleteRef, Autocomplete } from "./autocomplete"
 import { useRenderer, useTerminalDimensions, type JSX } from "@opentui/solid"
-import type { AssistantMessage, FilePart, SessionV2Info, UserMessage } from "@opencode-ai/sdk/v2"
+import type { AssistantMessage, FilePart, SessionMessageUser, SessionV2Info, UserMessage } from "@opencode-ai/sdk/v2"
 import { Locale } from "../../util/locale"
 import { errorMessage } from "../../util/error"
 import { createColors, createFrames } from "../../ui/spinner"
@@ -62,7 +62,7 @@ export type PromptProps = {
   sessionID?: string
   visible?: boolean
   disabled?: boolean
-  onSubmit?: () => void
+  onSubmit?: (message?: SessionMessageUser) => void
   ref?: (ref: PromptRef | undefined) => void
   hint?: JSX.Element
   right?: JSX.Element
@@ -1077,6 +1077,7 @@ export function Prompt(props: PromptProps) {
           ]
         : []
 
+    let submittedUserMessage: SessionMessageUser | undefined
     if (store.mode === "shell") {
       move.startSubmit()
       void sdk.client.session.shell({
@@ -1152,7 +1153,7 @@ export function Prompt(props: PromptProps) {
           return false
         }
       }
-      const error = await sdk.api.session
+      const admitted = await sdk.api.session
         .prompt({
           sessionID,
           prompt: {
@@ -1189,14 +1190,22 @@ export function Prompt(props: PromptProps) {
           },
         })
         .then(
-          () => undefined,
-          (error) => error,
+          (result) => result,
+          (error) => {
+            toast.show({ title: "Failed to send prompt", message: errorMessage(error), variant: "error" })
+            return undefined
+          },
         )
-      if (error) {
-        toast.show({ title: "Failed to send prompt", message: errorMessage(error), variant: "error" })
-        return false
-      }
+      if (!admitted) return false
       if (editorParts.length > 0) editor.markSelectionSent()
+      submittedUserMessage = {
+        id: admitted.id,
+        type: "user",
+        text: admitted.prompt.text,
+        files: admitted.prompt.files ? [...admitted.prompt.files] : undefined,
+        agents: admitted.prompt.agents ? [...admitted.prompt.agents] : undefined,
+        time: { created: admitted.timeCreated },
+      }
     }
     history.append({
       ...store.prompt,
@@ -1208,7 +1217,7 @@ export function Prompt(props: PromptProps) {
       parts: [],
     })
     setStore("extmarkToPartIndex", new Map())
-    props.onSubmit?.()
+    props.onSubmit?.(submittedUserMessage)
 
     // temporary hack to make sure the message is sent
     if (!props.sessionID) {
diff --git a/packages/tui/src/routes/session/index.tsx b/packages/tui/src/routes/session/index.tsx
index f1f3e18283..c92ed18b84 100644
--- a/packages/tui/src/routes/session/index.tsx
+++ b/packages/tui/src/routes/session/index.tsx
@@ -241,6 +241,13 @@ export function Session() {
   const sdk = useSDK()
   const editor = useEditorContext()
   const rows = createSessionRows(() => route.sessionID)
+  const [optimisticPrompts, setOptimisticPrompts] = createSignal<SessionMessageUser[]>([])
+  const visibleOptimisticPrompts = createMemo(() => {
+    const ids = new Set(messageIDs())
+    return optimisticPrompts().filter((message) => !ids.has(message.id))
+  })
+
+  createEffect(on(() => route.sessionID, () => setOptimisticPrompts([])))
 
   createEffect(
     on(descendantSessionIDs, (sessionIDs) => {
@@ -920,6 +927,13 @@ export function Session() {
                     />
                   )}
                 </For>
+                <For each={visibleOptimisticPrompts()}>
+                  {(message) => (
+                    <box marginTop={1} flexShrink={0}>
+                      <UserMessage message={message} optimistic={true} />
+                    </box>
+                  )}
+                </For>
                 <Show when={session()?.revert?.messageID}>
                   <RevertMessage
                     count={
@@ -960,7 +974,12 @@ export function Session() {
                         visible={true}
                         ref={bind}
                         disabled={false}
-                        onSubmit={() => {
+                        onSubmit={(message) => {
+                          if (message)
+                            setOptimisticPrompts((messages) => [
+                              ...messages.filter((item) => item.id !== message.id),
+                              message,
+                            ])
                           toBottom()
                         }}
                         sessionID={route.sessionID}
@@ -1317,7 +1336,7 @@ function RevertMessage(props: {
   )
 }
 
-function UserMessage(props: { message: SessionMessageUser }) {
+function UserMessage(props: { message: SessionMessageUser; optimistic?: boolean }) {
   const ctx = use()
   const local = useLocal()
   const files = createMemo(() => props.message.files ?? [])
@@ -1343,6 +1362,7 @@ function UserMessage(props: { message: SessionMessageUser }) {
             setHover(false)
           }}
           onMouseUp={() => {
+            if (props.optimistic) return
             if (renderer.getSelection()?.getSelectedText()) return
             dialog.replace(() => <DialogMessage messageID={props.message.id} sessionID={ctx.sessionID} />)
           }}
@@ -1353,6 +1373,9 @@ function UserMessage(props: { message: SessionMessageUser }) {
           flexShrink={0}
         >
           <text fg={theme.text}>{props.message.text}</text>
+          <Show when={props.optimistic}>
+            <text fg={theme.textMuted}>optimistic prompt</text>
+          </Show>
           <Show when={files().length}>
             <box
               flexDirection="row"