35 lines
857 B
TypeScript
35 lines
857 B
TypeScript
import { useEffect, useState } from '../lib/teact/teact';
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import { addCallback } from '../lib/teact/teactn';
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import { getGlobal } from '../global';
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import type { GlobalState } from '../global/types';
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type LastSyncTimeSetter = (time: number) => void;
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const handlers = new Set<LastSyncTimeSetter>();
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let prevGlobal: GlobalState | undefined;
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addCallback((global: GlobalState) => {
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if (global.lastSyncTime && global.lastSyncTime !== prevGlobal?.lastSyncTime) {
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for (const handler of handlers) {
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handler(global.lastSyncTime);
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}
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}
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prevGlobal = global;
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});
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export default function useLastSyncTime() {
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const [lastSyncTime, setLastSyncTime] = useState(getGlobal().lastSyncTime);
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useEffect(() => {
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handlers.add(setLastSyncTime);
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return () => {
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handlers.delete(setLastSyncTime);
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};
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}, []);
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return lastSyncTime;
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}
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