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use the after() nextjs function in the /api/chat route #866

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use the after() nextjs function in the /api/chat route #866

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6e86d48
use the `after()` nextjs function to save the messages in the backgro…
gianpaj Mar 14, 2025
a8be6cc
Merge branch 'main' into use-after-nextjs-function
gianpaj Mar 18, 2025
9f39ecd
remove duplicate code after merge
gianpaj Mar 18, 2025
251a4a9
Merge branch 'main' into use-after-nextjs-function
gianpaj Apr 15, 2025
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67 changes: 34 additions & 33 deletions app/(chat)/api/chat/route.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@ import {
smoothStream,
streamText,
} from 'ai';
import { NextResponse, after } from 'next/server';
import { auth } from '@/app/(auth)/auth';
import { systemPrompt } from '@/lib/ai/prompts';
import {
Expand Down Expand Up @@ -106,41 +107,41 @@ export async function POST(request: Request) {
dataStream,
}),
},
onFinish: async ({ response }) => {
if (session.user?.id) {
try {
const assistantId = getTrailingMessageId({
messages: response.messages.filter(
(message) => message.role === 'assistant',
),
});

if (!assistantId) {
throw new Error('No assistant message found!');
onFinish: async ({ response, reasoning }) => {
after(async () => {
if (session.user?.id) {
try {
const assistantId = getTrailingMessageId({
messages: response.messages.filter(
(message) => message.role === 'assistant',
),
});
if (!assistantId) {
throw new Error('No assistant message found!');
}
const [, assistantMessage] = appendResponseMessages({
messages: [userMessage],
responseMessages: response.messages,
});

await saveMessages({
messages: [
{
id: assistantId,
chatId: id,
role: assistantMessage.role,
parts: assistantMessage.parts,
attachments:
assistantMessage.experimental_attachments ?? [],
createdAt: new Date(),
},
],
});
} catch (_) {
console.error('Failed to save chat');
}

const [, assistantMessage] = appendResponseMessages({
messages: [userMessage],
responseMessages: response.messages,
});

await saveMessages({
messages: [
{
id: assistantId,
chatId: id,
role: assistantMessage.role,
parts: assistantMessage.parts,
attachments:
assistantMessage.experimental_attachments ?? [],
createdAt: new Date(),
},
],
});
} catch (_) {
console.error('Failed to save chat');
}
}
});
},
experimental_telemetry: {
isEnabled: isProductionEnvironment,
Expand Down