141 lines
4 KiB
TypeScript
141 lines
4 KiB
TypeScript
import type { UseChatHelpers } from "@ai-sdk/react";
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import equal from "fast-deep-equal";
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import { ArrowDownIcon } from "lucide-react";
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import { memo, useEffect } from "react";
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import { useMessages } from "@/hooks/use-messages";
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import type { Vote } from "@/lib/db/schema";
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import type { ChatMessage } from "@/lib/types";
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import { useDataStream } from "./data-stream-provider";
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import { Conversation, ConversationContent } from "./elements/conversation";
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import { Greeting } from "./greeting";
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import { PreviewMessage, ThinkingMessage } from "./message";
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type MessagesProps = {
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chatId: string;
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status: UseChatHelpers<ChatMessage>["status"];
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votes: Vote[] | undefined;
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messages: ChatMessage[];
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setMessages: UseChatHelpers<ChatMessage>["setMessages"];
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regenerate: UseChatHelpers<ChatMessage>["regenerate"];
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isReadonly: boolean;
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isArtifactVisible: boolean;
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selectedModelId: string;
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};
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function PureMessages({
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chatId,
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status,
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votes,
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messages,
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setMessages,
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regenerate,
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isReadonly,
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selectedModelId,
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}: MessagesProps) {
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const {
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containerRef: messagesContainerRef,
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endRef: messagesEndRef,
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isAtBottom,
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scrollToBottom,
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hasSentMessage,
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} = useMessages({
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status,
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});
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useDataStream();
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useEffect(() => {
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if (status === "submitted") {
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requestAnimationFrame(() => {
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const container = messagesContainerRef.current;
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if (container) {
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container.scrollTo({
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top: container.scrollHeight,
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behavior: "smooth",
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});
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}
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});
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}
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}, [status, messagesContainerRef]);
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return (
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<div
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className="overscroll-behavior-contain -webkit-overflow-scrolling-touch flex-1 touch-pan-y overflow-y-scroll"
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ref={messagesContainerRef}
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style={{ overflowAnchor: "none" }}
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>
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<Conversation className="mx-auto flex min-w-0 max-w-4xl flex-col gap-4 md:gap-6">
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<ConversationContent className="flex flex-col gap-4 px-2 py-4 md:gap-6 md:px-4">
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{messages.length === 0 && <Greeting />}
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{messages.map((message, index) => (
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<PreviewMessage
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chatId={chatId}
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isLoading={
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status === "streaming" && messages.length - 1 === index
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}
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isReadonly={isReadonly}
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key={message.id}
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message={message}
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regenerate={regenerate}
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requiresScrollPadding={
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hasSentMessage && index === messages.length - 1
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}
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setMessages={setMessages}
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vote={
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votes
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? votes.find((vote) => vote.messageId === message.id)
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: undefined
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}
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/>
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))}
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{status === "submitted" &&
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messages.length > 0 &&
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messages.at(-1)?.role === "user" &&
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selectedModelId !== "chat-model-reasoning" && <ThinkingMessage />}
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<div
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className="min-h-[24px] min-w-[24px] shrink-0"
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ref={messagesEndRef}
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/>
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</ConversationContent>
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</Conversation>
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{!isAtBottom && (
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<button
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aria-label="Scroll to bottom"
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className="-translate-x-1/2 absolute bottom-40 left-1/2 z-10 rounded-full border bg-background p-2 shadow-lg transition-colors hover:bg-muted"
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onClick={() => scrollToBottom("smooth")}
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type="button"
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>
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<ArrowDownIcon className="size-4" />
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</button>
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)}
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</div>
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);
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}
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export const Messages = memo(PureMessages, (prevProps, nextProps) => {
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if (prevProps.isArtifactVisible && nextProps.isArtifactVisible) {
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return true;
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}
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if (prevProps.status !== nextProps.status) {
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return false;
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}
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if (prevProps.selectedModelId !== nextProps.selectedModelId) {
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return false;
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}
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if (prevProps.messages.length !== nextProps.messages.length) {
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return false;
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}
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if (!equal(prevProps.messages, nextProps.messages)) {
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return false;
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}
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if (!equal(prevProps.votes, nextProps.votes)) {
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return false;
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}
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return false;
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});
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