n8n/packages/@n8n/nodes-langchain/nodes/trigger/ChatTrigger/templates.ts

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import type { AuthenticationChatOption, LoadPreviousSessionChatOption } from './types';
export function createPage({
instanceId,
webhookUrl,
showWelcomeScreen,
loadPreviousSession,
i18n: { en },
initialMessages,
authentication,
}: {
instanceId: string;
webhookUrl?: string;
showWelcomeScreen?: boolean;
loadPreviousSession?: LoadPreviousSessionChatOption;
i18n: {
en: Record<string, string>;
};
initialMessages: string[];
mode: 'test' | 'production';
authentication: AuthenticationChatOption;
}) {
const validAuthenticationOptions: AuthenticationChatOption[] = [
'none',
'basicAuth',
'n8nUserAuth',
];
const validLoadPreviousSessionOptions: LoadPreviousSessionChatOption[] = [
'manually',
'memory',
'notSupported',
];
const sanitizedAuthentication = validAuthenticationOptions.includes(authentication)
? authentication
: 'none';
const sanitizedShowWelcomeScreen = !!showWelcomeScreen;
const sanitizedLoadPreviousSession = validLoadPreviousSessionOptions.includes(
loadPreviousSession as LoadPreviousSessionChatOption,
)
? loadPreviousSession
: 'notSupported';
return `<doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Chat</title>
<link href="https://cdn.jsdelivr.net/npm/normalize.css@8.0.1/normalize.min.css" rel="stylesheet" />
<link href="https://cdn.jsdelivr.net/npm/@n8n/chat/style.css" rel="stylesheet" />
</head>
<body>
<script type="module">
import { createChat } from 'https://cdn.jsdelivr.net/npm/@n8n/chat@latest/chat.bundle.es.js';
(async function () {
const authentication = '${sanitizedAuthentication}';
let metadata;
if (authentication === 'n8nUserAuth') {
try {
const response = await fetch('/rest/login', {
method: 'GET'
});
if (response.status !== 200) {
throw new Error('Not logged in');
}
const responseData = await response.json();
metadata = {
user: {
id: responseData.data.id,
firstName: responseData.data.firstName,
lastName: responseData.data.lastName,
email: responseData.data.email,
},
};
} catch (error) {
window.location.href = '/signin?redirect=' + window.location.href;
return;
}
}
createChat({
mode: 'fullscreen',
webhookUrl: '${webhookUrl}',
showWelcomeScreen: ${sanitizedShowWelcomeScreen},
loadPreviousSession: ${sanitizedLoadPreviousSession !== 'notSupported'},
metadata: metadata,
webhookConfig: {
headers: {
'Content-Type': 'application/json',
'X-Instance-Id': '${instanceId}',
}
},
i18n: {
${en ? `en: ${JSON.stringify(en)},` : ''}
},
${initialMessages.length ? `initialMessages: ${JSON.stringify(initialMessages)},` : ''}
});
})();
</script>
</body>
</html>`;
}