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"use client";
import styles from './page.module.css';
import { useEffect, useState } from 'react';
import { useChat } from 'ai/react';
import { FunctionCallHandler, Message, nanoid } from 'ai';
import ReactMarkdown from "react-markdown";
import { Bot, User } from "lucide-react";
import { toast } from 'sonner';
import { FunctionIcon } from './icons';
import { updateBackground } from './util';
import Input from './input';
const Page: React.FC = () => {
useEffect(() => {
updateBackground();
const interval = setInterval(updateBackground, 600);
return () => clearInterval(interval);
}, []);
const functionCallHandler: FunctionCallHandler = async (
chatMessages,
functionCall,
) => {
let result;
const { name, arguments: args } = functionCall;
const response = await fetch("/api/functions", {
method: "POST",
headers: {
"Content-Type": "application/json",
},
body: JSON.stringify({
args: args,
name: name
})
} as any);
if (!response.ok) {
const errorText = await response.text();
toast.error(`Something went wrong: ${errorText}`);
return;
}
result = await response.text();
return {
messages: [
...chatMessages,
{
id: nanoid(),
name: functionCall.name,
role: "function" as const,
content: result,
},
],
};
};
const { messages, input, setInput, handleSubmit, isLoading } = useChat({
experimental_onFunctionCall: functionCallHandler,
onError: (error: any) => {
console.log(error);
},
});
const [isExpanded, setIsExpanded] = useState(false);
const toggleExpand = () => {
setIsExpanded(!isExpanded);
};
const roleUIConfig: {
[key: string]: {
avatar: JSX.Element;
bgColor: string;
avatarColor: string;
// eslint-disable-next-line no-unused-vars
dialogComponent: (message: Message) => JSX.Element;
};
} = {
user: {
avatar: <User width={20} />,
bgColor: "bg-white",
avatarColor: "bg-black",
dialogComponent: (message: Message) => (
<ReactMarkdown
className=""
components={{
a: (props) => (
<a {...props} target="_blank" rel="noopener noreferrer" />
),
}}
>
{message.content}
</ReactMarkdown>
),
},
assistant: {
avatar: <Bot width={20} />,
bgColor: "bg-gray-100",
avatarColor: "bg-green-500",
dialogComponent: (message: Message) => (
<ReactMarkdown
className=""
components={{
a: (props) => (
<a {...props} target="_blank" rel="noopener noreferrer" />
),
}}
>
{message.content}
</ReactMarkdown>
),
},
function: {
avatar: <div className="cursor-pointer" onClick={toggleExpand}><FunctionIcon /></div>,
bgColor: "bg-gray-200",
avatarColor: "bg-blue-500",
dialogComponent: (message: Message) => {
return (
<div className="flex flex-col">
{isExpanded && (
<div className="py-1">{message.content}</div>
)}
</div>
);
},
}
};
return (
<main className={styles.main}>
<div id="bg" className={styles.background}></div>
<div className={styles.messages}>
{messages.length > 0 ? (
messages.map((message, i) => {
const messageClass = `${styles.message} ${message.role === 'user' ? styles['message-user'] : ''}`;
return (
<div key={i} className={messageClass} style={{ display: 'flex', alignItems: 'center' }}>
<div className={styles.avatar}>
{roleUIConfig[message.role].avatar}
</div>
<div style={{ flex: 1 }}>
{message.content === "" && message.function_call != undefined ? (
typeof message.function_call === "object" ? (
<div style={{ display: 'flex', flexDirection: 'column' }}>
<div>
Using{" "}
<span className="font-bold">
{message.function_call.name}
</span>{" "}
...
</div>
<div>
{message.function_call.arguments}
</div>
</div>
) : (
<div className="function-call">{message.function_call}</div>
)
) : (
roleUIConfig[message.role].dialogComponent(message)
)}
</div>
</div>
);
})
) : null}
</div>
<Input handleSubmit={handleSubmit as any} setInput={setInput} input={input} />
</main>
);
}
export default Page;
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