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import { useMemo, useState } from 'react';
import { useAppContext } from '../utils/app.context';
import { Message, PendingMessage } from '../utils/types';
import { classNames } from '../utils/misc';
import MarkdownDisplay, { CopyButton } from './MarkdownDisplay';
import {
ArrowPathIcon,
ChevronLeftIcon,
ChevronRightIcon,
PencilSquareIcon,
} from '@heroicons/react/24/outline';
import ChatInputExtraContextItem from './ChatInputExtraContextItem';
import { BtnWithTooltips } from '../utils/common';
interface SplitMessage {
content: PendingMessage['content'];
thought?: string;
isThinking?: boolean;
}
export default function ChatMessage({
msg,
siblingLeafNodeIds,
siblingCurrIdx,
id,
onRegenerateMessage,
onEditMessage,
onChangeSibling,
isPending,
}: {
msg: Message | PendingMessage;
siblingLeafNodeIds: Message['id'][];
siblingCurrIdx: number;
id?: string;
onRegenerateMessage(msg: Message): void;
onEditMessage(msg: Message, content: string): void;
onChangeSibling(sibling: Message['id']): void;
isPending?: boolean;
}) {
const { viewingChat, config } = useAppContext();
const [editingContent, setEditingContent] = useState<string | null>(null);
const timings = useMemo(
() =>
msg.timings
? {
...msg.timings,
prompt_per_second:
(msg.timings.prompt_n / msg.timings.prompt_ms) * 1000,
predicted_per_second:
(msg.timings.predicted_n / msg.timings.predicted_ms) * 1000,
}
: null,
[msg.timings]
);
const nextSibling = siblingLeafNodeIds[siblingCurrIdx + 1];
const prevSibling = siblingLeafNodeIds[siblingCurrIdx - 1];
// for reasoning model, we split the message into content and thought
// TODO: implement this as remark/rehype plugin in the future
const { content, thought, isThinking }: SplitMessage = useMemo(() => {
if (msg.content === null || msg.role !== 'assistant') {
return { content: msg.content };
}
let actualContent = '';
let thought = '';
let isThinking = false;
let thinkSplit = msg.content.split('<think>', 2);
actualContent += thinkSplit[0];
while (thinkSplit[1] !== undefined) {
// <think> tag found
thinkSplit = thinkSplit[1].split('</think>', 2);
thought += thinkSplit[0];
isThinking = true;
if (thinkSplit[1] !== undefined) {
// </think> closing tag found
isThinking = false;
thinkSplit = thinkSplit[1].split('<think>', 2);
actualContent += thinkSplit[0];
}
}
return { content: actualContent, thought, isThinking };
}, [msg]);
if (!viewingChat) return null;
const isUser = msg.role === 'user';
return (
<div
className="group"
id={id}
role="group"
aria-description={`Message from ${msg.role}`}
>
<div
className={classNames({
chat: true,
'chat-start': !isUser,
'chat-end': isUser,
})}
>
{msg.extra && msg.extra.length > 0 && (
<ChatInputExtraContextItem items={msg.extra} clickToShow />
)}
<div
className={classNames({
'chat-bubble markdown': true,
'chat-bubble bg-transparent': !isUser,
})}
>
{/* textarea for editing message */}
{editingContent !== null && (
<>
<textarea
dir="auto"
className="textarea textarea-bordered bg-base-100 text-base-content max-w-2xl w-[calc(90vw-8em)] h-24"
value={editingContent}
onChange={(e) => setEditingContent(e.target.value)}
></textarea>
<br />
<button
className="btn btn-ghost mt-2 mr-2"
onClick={() => setEditingContent(null)}
>
Cancel
</button>
<button
className="btn mt-2"
onClick={() => {
if (msg.content !== null) {
setEditingContent(null);
onEditMessage(msg as Message, editingContent);
}
}}
>
Submit
</button>
</>
)}
{/* not editing content, render message */}
{editingContent === null && (
<>
{content === null ? (
<>
{/* show loading dots for pending message */}
<span className="loading loading-dots loading-md"></span>
</>
) : (
<>
{/* render message as markdown */}
<div dir="auto" tabIndex={0}>
{thought && (
<ThoughtProcess
isThinking={!!isThinking && !!isPending}
content={thought}
open={config.showThoughtInProgress}
/>
)}
<MarkdownDisplay
content={content}
isGenerating={isPending}
/>
</div>
</>
)}
{/* render timings if enabled */}
{timings && config.showTokensPerSecond && (
<div className="dropdown dropdown-hover dropdown-top mt-2">
<div
tabIndex={0}
role="button"
className="cursor-pointer font-semibold text-sm opacity-60"
>
Speed: {timings.predicted_per_second.toFixed(1)} t/s
</div>
<div className="dropdown-content bg-base-100 z-10 w-64 p-2 shadow mt-4">
<b>Prompt</b>
<br />- Tokens: {timings.prompt_n}
<br />- Time: {timings.prompt_ms} ms
<br />- Speed: {timings.prompt_per_second.toFixed(1)} t/s
<br />
<b>Generation</b>
<br />- Tokens: {timings.predicted_n}
<br />- Time: {timings.predicted_ms} ms
<br />- Speed: {timings.predicted_per_second.toFixed(1)} t/s
<br />
</div>
</div>
)}
</>
)}
</div>
</div>
{/* actions for each message */}
{msg.content !== null && (
<div
className={classNames({
'flex items-center gap-2 mx-4 mt-2 mb-2': true,
'flex-row-reverse': msg.role === 'user',
})}
>
{siblingLeafNodeIds && siblingLeafNodeIds.length > 1 && (
<div
className="flex gap-1 items-center opacity-60 text-sm"
role="navigation"
aria-description={`Message version ${siblingCurrIdx + 1} of ${siblingLeafNodeIds.length}`}
>
<button
className={classNames({
'btn btn-sm btn-ghost p-1': true,
'opacity-20': !prevSibling,
})}
onClick={() => prevSibling && onChangeSibling(prevSibling)}
aria-label="Previous message version"
>
<ChevronLeftIcon className="h-4 w-4" />
</button>
<span>
{siblingCurrIdx + 1} / {siblingLeafNodeIds.length}
</span>
<button
className={classNames({
'btn btn-sm btn-ghost p-1': true,
'opacity-20': !nextSibling,
})}
onClick={() => nextSibling && onChangeSibling(nextSibling)}
aria-label="Next message version"
>
<ChevronRightIcon className="h-4 w-4" />
</button>
</div>
)}
{/* user message */}
{msg.role === 'user' && (
<BtnWithTooltips
className="btn-mini w-8 h-8"
onClick={() => setEditingContent(msg.content)}
disabled={msg.content === null}
tooltipsContent="Edit message"
>
<PencilSquareIcon className="h-4 w-4" />
</BtnWithTooltips>
)}
{/* assistant message */}
{msg.role === 'assistant' && (
<>
{!isPending && (
<BtnWithTooltips
className="btn-mini w-8 h-8"
onClick={() => {
if (msg.content !== null) {
onRegenerateMessage(msg as Message);
}
}}
disabled={msg.content === null}
tooltipsContent="Regenerate response"
>
<ArrowPathIcon className="h-4 w-4" />
</BtnWithTooltips>
)}
</>
)}
<CopyButton className="btn-mini w-8 h-8" content={msg.content} />
</div>
)}
</div>
);
}
function ThoughtProcess({
isThinking,
content,
open,
}: {
isThinking: boolean;
content: string;
open: boolean;
}) {
return (
<div
role="button"
aria-label="Toggle thought process display"
tabIndex={0}
className={classNames({
'collapse bg-none': true,
})}
>
<input type="checkbox" defaultChecked={open} />
<div className="collapse-title px-0">
<div className="btn rounded-xl">
{isThinking ? (
<span>
<span
className="loading loading-spinner loading-md mr-2"
style={{ verticalAlign: 'middle' }}
></span>
Thinking
</span>
) : (
<>Thought Process</>
)}
</div>
</div>
<div
className="collapse-content text-base-content/70 text-sm p-1"
tabIndex={0}
aria-description="Thought process content"
>
<div className="border-l-2 border-base-content/20 pl-4 mb-4">
<MarkdownDisplay content={content} />
</div>
</div>
</div>
);
}
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