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Chat.tsx
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Chat.tsx
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import { useCallback, useEffect, useRef, useState } from 'react';
import { useAIMask } from './context';
import { ChatCompletionMessageParam } from '@ai-mask/sdk';
import clsx from 'clsx';
export default function Chat() {
const { aiMaskClient, selectedModel } = useAIMask()
const [messages, setMessages] = useState<Array<ChatCompletionMessageParam>>([])
const [prompt, setPrompt] = useState<string>('')
const [loading, setLoading] = useState<boolean>(true)
const [error, setError] = useState<string | undefined>()
const worker = useRef<Worker | null>(null);
useEffect(() => {
if (!worker.current && aiMaskClient && aiMaskClient.messager.port) {
// Create the worker if it does not yet exist.
worker.current = new Worker(new URL('./worker.ts', import.meta.url), {
type: 'module',
});
aiMaskClient.provideWorkerPort(worker.current)
setLoading(false);
}
}, []);
const generate = useCallback(async () => {
if (!aiMaskClient || !selectedModel || !prompt) return
const modelId = selectedModel.id
try {
/*
const streamCallback = (chunk: string) => {
setMessages(prev =>
prev.map((message, i) => {
if (i === prev.length - 1)
return {
...message,
content: message.content + chunk
}
return message
})
)
}*/
setLoading(true)
setPrompt('')
setMessages(prev => [
...prev,
{
role: 'user',
content: prompt,
},
])
worker.current?.addEventListener('message', ({ data }) => {
if (data.type === 'chat_response') {
setMessages(prev => [
...prev,
{
role: 'assistant',
content: data.response
}
])
setLoading(false)
}
})
worker.current?.postMessage({
type: 'chat',
model: modelId,
messages: [
...messages,
{
role: 'user',
content: prompt
}
],
})
} catch (error) {
console.log(error)
const message = (error instanceof Error) ? error.message : String(error)
setError(message);
setLoading(false)
}
}, [aiMaskClient, selectedModel, prompt, setError, setMessages, setLoading, setPrompt])
if (!aiMaskClient) {
return (
<div className="">
<p>Not ready</p>
</div>
)
}
return (
<div className="flex flex-col items-center w-full border rounded-xl max-w-screen-md flex-1 overflow-auto">
<h2 className='my-2'>Chat</h2>
<div className='flex flex-col-reverse w-full flex-1 overflow-auto scroll-smooth'>
<div className='flex-col'>
{messages.map((message, i) => (
<div key={i} className={clsx('py-4 px-8', message.role === 'user' ? 'bg-orange-100 text-right' : 'bg-orange-200')}>
<p className='italic font-semibold'>{message.role}</p>
<p>{message.content}</p>
</div>
))}
</div>
</div>
<form
onSubmit={generate}
className='flex w-full items-stretch p-2'
>
<input
type='text'
className='border rounded-md p-2 flex-1 resize-none'
value={prompt}
required
minLength={1}
onChange={e => setPrompt(e.target.value)}
placeholder='What is the best way to build a chrome extension ?'
/>
<button
className='border rounded-md ml-2'
onClick={generate}
disabled={loading}
>{loading ? 'Generating...' : 'Send'}</button>
</form>
{error && <div className='text-red-500'>Error: {error}</div>}
</div>
)
}