62 lines
1.5 KiB
TypeScript
62 lines
1.5 KiB
TypeScript
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"use client";
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/**
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* 拉取并缓存 /api/node-types 节点目录(每会话一次,模块级缓存)。
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* 对齐 dograh 的 useNodeSpecs:规格随后端 + 刷新生效。
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*/
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import { useEffect, useRef, useState } from "react";
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import { nodeTypesApi, type NodeTypesResponse } from "@/lib/api";
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import {
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toRuntimeSpec,
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type NodeSpecMap,
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type RuntimeNodeSpec,
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} from "./specs";
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let _cache: NodeTypesResponse | null = null;
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type State = {
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specs: RuntimeNodeSpec[];
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byType: NodeSpecMap;
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loading: boolean;
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error: string | null;
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};
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function build(data: NodeTypesResponse | null): {
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specs: RuntimeNodeSpec[];
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byType: NodeSpecMap;
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} {
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const specs = (data?.nodeTypes ?? []).map(toRuntimeSpec);
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const byType: NodeSpecMap = {};
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for (const spec of specs) byType[spec.type] = spec;
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return { specs, byType };
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}
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export function useNodeSpecs(): State {
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const fetched = useRef(false);
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const [state, setState] = useState<State>(() => {
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const { specs, byType } = build(_cache);
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return { specs, byType, loading: !_cache, error: null };
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});
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useEffect(() => {
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if (_cache || fetched.current) return;
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fetched.current = true;
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nodeTypesApi
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.list()
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.then((data) => {
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_cache = data;
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const { specs, byType } = build(data);
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setState({ specs, byType, loading: false, error: null });
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})
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.catch((err: unknown) => {
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const message = err instanceof Error ? err.message : String(err);
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setState((s) => ({ ...s, loading: false, error: message }));
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});
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}, []);
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return state;
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}
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