302 lines
11 KiB
TypeScript
302 lines
11 KiB
TypeScript
import React, { FC, useEffect, useRef, useState } from 'react';
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import { useTranslation } from 'react-i18next';
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import { Avatar, PresenceBadge, Textarea } from '@fluentui/react-components';
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import commonStore, { ModelStatus } from '../stores/commonStore';
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import { observer } from 'mobx-react-lite';
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import { v4 as uuid } from 'uuid';
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import classnames from 'classnames';
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import { fetchEventSource } from '@microsoft/fetch-event-source';
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import { ConversationPair, getConversationPairs, Record } from '../utils/get-conversation-pairs';
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import logo from '../assets/images/logo.jpg';
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import MarkdownRender from '../components/MarkdownRender';
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import { ToolTipButton } from '../components/ToolTipButton';
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import { ArrowCircleUp28Regular, Delete28Regular, RecordStop28Regular } from '@fluentui/react-icons';
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import { CopyButton } from '../components/CopyButton';
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import { ReadButton } from '../components/ReadButton';
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import { toast } from 'react-toastify';
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import { WorkHeader } from '../components/WorkHeader';
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export const userName = 'M E';
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export const botName = 'A I';
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export enum MessageType {
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Normal,
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Error
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}
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export type Side = 'left' | 'right'
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export type Color = 'neutral' | 'brand' | 'colorful'
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export type MessageItem = {
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sender: string,
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type: MessageType,
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color: Color,
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avatarImg?: string,
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time: string,
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content: string,
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side: Side,
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done: boolean
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}
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export type Conversations = {
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[uuid: string]: MessageItem
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}
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const ChatPanel: FC = observer(() => {
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const { t } = useTranslation();
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const [message, setMessage] = useState('');
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const bodyRef = useRef<HTMLDivElement>(null);
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const inputRef = useRef<HTMLTextAreaElement>(null);
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const port = commonStore.getCurrentModelConfig().apiParameters.apiPort;
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const sseControllerRef = useRef<AbortController | null>(null);
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let lastMessageId: string;
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let generating: boolean = false;
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if (commonStore.conversationsOrder.length > 0) {
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lastMessageId = commonStore.conversationsOrder[commonStore.conversationsOrder.length - 1];
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const lastMessage = commonStore.conversations[lastMessageId];
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if (lastMessage.sender === botName)
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generating = !lastMessage.done;
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}
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useEffect(() => {
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if (inputRef.current)
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inputRef.current.style.maxHeight = '16rem';
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scrollToBottom();
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}, []);
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useEffect(() => {
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if (commonStore.conversationsOrder.length === 0) {
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commonStore.setConversationsOrder(['welcome']);
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commonStore.setConversations({
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'welcome': {
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sender: botName,
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type: MessageType.Normal,
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color: 'colorful',
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avatarImg: logo,
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time: new Date().toISOString(),
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content: t('Hello! I\'m RWKV, an open-source and commercially available large language model.'),
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side: 'left',
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done: true
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}
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});
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}
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}, []);
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const scrollToBottom = () => {
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if (bodyRef.current)
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bodyRef.current.scrollTop = bodyRef.current.scrollHeight;
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};
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const handleKeyDownOrClick = (e: any) => {
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e.stopPropagation();
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if (e.type === 'click' || (e.keyCode === 13 && !e.shiftKey)) {
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e.preventDefault();
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if (commonStore.status.status === ModelStatus.Offline) {
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toast(t('Please click the button in the top right corner to start the model'), { type: 'warning' });
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return;
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}
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if (!message) return;
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onSubmit(message);
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setMessage('');
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}
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};
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const onSubmit = (message: string) => {
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const newId = uuid();
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commonStore.conversations[newId] = {
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sender: userName,
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type: MessageType.Normal,
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color: 'brand',
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time: new Date().toISOString(),
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content: message,
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side: 'right',
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done: true
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};
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commonStore.setConversations(commonStore.conversations);
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commonStore.conversationsOrder.push(newId);
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commonStore.setConversationsOrder(commonStore.conversationsOrder);
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const records: Record[] = [];
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commonStore.conversationsOrder.forEach((uuid, index) => {
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const conversation = commonStore.conversations[uuid];
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if (conversation.done && conversation.type === MessageType.Normal && conversation.sender === botName) {
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if (index > 0) {
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const questionId = commonStore.conversationsOrder[index - 1];
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const question = commonStore.conversations[questionId];
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if (question.done && question.type === MessageType.Normal && question.sender === userName) {
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records.push({ question: question.content, answer: conversation.content });
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}
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}
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}
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});
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const messages = getConversationPairs(records, false);
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(messages as ConversationPair[]).push({ role: 'user', content: message });
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const answerId = uuid();
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commonStore.conversations[answerId] = {
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sender: botName,
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type: MessageType.Normal,
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color: 'colorful',
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avatarImg: logo,
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time: new Date().toISOString(),
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content: '',
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side: 'left',
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done: false
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};
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commonStore.setConversations(commonStore.conversations);
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commonStore.conversationsOrder.push(answerId);
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commonStore.setConversationsOrder(commonStore.conversationsOrder);
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setTimeout(scrollToBottom);
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let answer = '';
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sseControllerRef.current = new AbortController();
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fetchEventSource(`http://127.0.0.1:${port}/chat/completions`, // https://api.openai.com/v1/chat/completions || http://127.0.0.1:${port}/chat/completions
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{
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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Authorization: `Bearer sk-`
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},
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body: JSON.stringify({
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messages,
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stream: true,
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model: 'gpt-3.5-turbo'
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}),
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signal: sseControllerRef.current?.signal,
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onmessage(e) {
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console.log('sse message', e);
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scrollToBottom();
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if (e.data === '[DONE]') {
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commonStore.conversations[answerId].done = true;
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commonStore.conversations[answerId].content = commonStore.conversations[answerId].content.trim();
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commonStore.setConversations(commonStore.conversations);
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commonStore.setConversationsOrder([...commonStore.conversationsOrder]);
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return;
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}
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let data;
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try {
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data = JSON.parse(e.data);
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} catch (error) {
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console.debug('json error', error);
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return;
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}
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if (data.choices && Array.isArray(data.choices) && data.choices.length > 0) {
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answer += data.choices[0]?.delta?.content || '';
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commonStore.conversations[answerId].content = answer;
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commonStore.setConversations(commonStore.conversations);
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commonStore.setConversationsOrder([...commonStore.conversationsOrder]);
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}
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},
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onclose() {
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console.log('Connection closed');
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},
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onerror(err) {
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commonStore.conversations[answerId].type = MessageType.Error;
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commonStore.conversations[answerId].done = true;
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commonStore.setConversations(commonStore.conversations);
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commonStore.setConversationsOrder([...commonStore.conversationsOrder]);
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throw err;
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}
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});
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};
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return (
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<div className="flex flex-col w-full grow gap-4 pt-4 overflow-hidden">
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<div ref={bodyRef} className="grow overflow-y-scroll overflow-x-hidden pr-2">
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{commonStore.conversationsOrder.map((uuid, index) => {
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const conversation = commonStore.conversations[uuid];
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return <div
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key={uuid}
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className={classnames(
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'flex gap-2 mb-2 overflow-hidden',
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conversation.side === 'left' ? 'flex-row' : 'flex-row-reverse'
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)}
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onMouseEnter={() => {
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const utils = document.getElementById('utils-' + uuid);
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if (utils) utils.classList.remove('invisible');
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}}
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onMouseLeave={() => {
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const utils = document.getElementById('utils-' + uuid);
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if (utils) utils.classList.add('invisible');
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}}
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>
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<Avatar
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color={conversation.color}
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name={conversation.sender}
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image={conversation.avatarImg ? { src: conversation.avatarImg } : undefined}
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/>
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<div
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className={classnames(
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'p-2 rounded-lg overflow-hidden',
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conversation.side === 'left' ? 'bg-gray-200' : 'bg-blue-500',
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conversation.side === 'left' ? 'text-gray-600' : 'text-white'
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)}
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>
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<MarkdownRender>{conversation.content}</MarkdownRender>
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</div>
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<div className="flex flex-col gap-1 items-start">
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<div className="grow" />
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{(conversation.type === MessageType.Error || !conversation.done) &&
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<PresenceBadge size="extra-small" status={
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conversation.type === MessageType.Error ? 'busy' : 'away'
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} />
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}
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<div className="flex invisible" id={'utils-' + uuid}>
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<ReadButton content={conversation.content} />
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<CopyButton content={conversation.content} />
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</div>
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</div>
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</div>;
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})}
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</div>
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<div className="flex items-end gap-2">
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<ToolTipButton desc={t('Clear')}
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icon={<Delete28Regular />}
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size="large" shape="circular" appearance="subtle"
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onClick={(e) => {
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if (generating)
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sseControllerRef.current?.abort();
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commonStore.setConversations({});
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commonStore.setConversationsOrder([]);
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}}
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/>
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<Textarea
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ref={inputRef}
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className="grow"
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resize="vertical"
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placeholder={t('Type your message here')!}
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value={message}
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onChange={(e) => setMessage(e.target.value)}
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onKeyDown={handleKeyDownOrClick}
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/>
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<ToolTipButton desc={generating ? t('Stop') : t('Send')}
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icon={generating ? <RecordStop28Regular /> : <ArrowCircleUp28Regular />}
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size="large" shape="circular" appearance="subtle"
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onClick={(e) => {
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if (generating) {
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sseControllerRef.current?.abort();
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if (lastMessageId) {
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commonStore.conversations[lastMessageId].type = MessageType.Error;
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commonStore.conversations[lastMessageId].done = true;
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commonStore.setConversations(commonStore.conversations);
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commonStore.setConversationsOrder([...commonStore.conversationsOrder]);
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}
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} else {
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handleKeyDownOrClick(e);
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}
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}} />
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</div>
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</div>
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);
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});
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export const Chat: FC = observer(() => {
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return (
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<div className="flex flex-col gap-1 p-2 h-full overflow-hidden">
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<WorkHeader />
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<ChatPanel />
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</div>
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);
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});
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