154 lines
4 KiB
TypeScript
154 lines
4 KiB
TypeScript
"use client";
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import { python } from "@codemirror/lang-python";
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import { EditorState, Transaction } from "@codemirror/state";
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import { oneDark } from "@codemirror/theme-one-dark";
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import { EditorView } from "@codemirror/view";
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import { basicSetup } from "codemirror";
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import { memo, useEffect, useRef } from "react";
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import type { Suggestion } from "@/lib/db/schema";
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type EditorProps = {
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content: string;
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onSaveContent: (updatedContent: string, debounce: boolean) => void;
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status: "streaming" | "idle";
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isCurrentVersion: boolean;
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currentVersionIndex: number;
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suggestions: Suggestion[];
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};
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function PureCodeEditor({ content, onSaveContent, status }: EditorProps) {
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const containerRef = useRef<HTMLDivElement>(null);
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const editorRef = useRef<EditorView | null>(null);
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const userScrolledRef = useRef(false);
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useEffect(() => {
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if (containerRef.current && !editorRef.current) {
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const startState = EditorState.create({
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doc: content,
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extensions: [basicSetup, python(), oneDark],
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});
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editorRef.current = new EditorView({
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state: startState,
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parent: containerRef.current,
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});
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}
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return () => {
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if (editorRef.current) {
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editorRef.current.destroy();
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editorRef.current = null;
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}
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};
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}, [content]);
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useEffect(() => {
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if (editorRef.current) {
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const updateListener = EditorView.updateListener.of((update) => {
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if (update.docChanged) {
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const transaction = update.transactions.find(
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(tr) => !tr.annotation(Transaction.remote)
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);
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if (transaction) {
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const newContent = update.state.doc.toString();
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onSaveContent(newContent, true);
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}
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}
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});
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const scrollListener = EditorView.domEventHandlers({
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scroll() {
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if (status !== "streaming") {
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return;
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}
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const dom = editorRef.current?.scrollDOM;
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if (!dom) {
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return;
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}
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const atBottom =
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dom.scrollHeight - dom.scrollTop - dom.clientHeight < 40;
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userScrolledRef.current = !atBottom;
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},
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});
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const currentSelection = editorRef.current.state.selection;
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const newState = EditorState.create({
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doc: editorRef.current.state.doc,
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extensions: [
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basicSetup,
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python(),
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oneDark,
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updateListener,
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scrollListener,
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],
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selection: currentSelection,
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});
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editorRef.current.setState(newState);
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}
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}, [onSaveContent, status]);
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useEffect(() => {
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if (status !== "streaming") {
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userScrolledRef.current = false;
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}
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}, [status]);
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useEffect(() => {
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if (editorRef.current && content) {
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const currentContent = editorRef.current.state.doc.toString();
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if (status === "streaming" || currentContent !== content) {
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const transaction = editorRef.current.state.update({
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changes: {
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from: 0,
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to: currentContent.length,
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insert: content,
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},
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annotations: [Transaction.remote.of(true)],
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});
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editorRef.current.dispatch(transaction);
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if (status === "streaming" && !userScrolledRef.current) {
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requestAnimationFrame(() => {
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const dom = editorRef.current?.scrollDOM;
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if (dom) {
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dom.scrollTo({ top: dom.scrollHeight });
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}
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});
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}
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}
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}
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}, [content, status]);
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return (
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<div
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className="not-prose relative w-full min-h-[300px] pb-[calc(50dvh)]"
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ref={containerRef}
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/>
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);
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}
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export const CodeEditor = memo(PureCodeEditor, (prevProps, nextProps) => {
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if (prevProps.status === "streaming" && nextProps.status === "streaming") {
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return false;
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}
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if (prevProps.content !== nextProps.content) {
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return false;
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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.currentVersionIndex !== nextProps.currentVersionIndex) {
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return false;
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}
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return true;
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});
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