sui-explorer-local/apps/core/src/hooks/useGetTimeBeforeEpochNumber.ts

Local Sui Explorer

// Copyright (c) Mysten Labs, Inc.
// SPDX-License-Identifier: Apache-2.0

import { useSuiClientQuery } from '@mysten/dapp-kit';

// Get time between current epoch and specified epoch
// Get the period between the current epoch and next epoch
export function useGetTimeBeforeEpochNumber(epoch: number) {
	const data = useSuiClientQuery('getLatestSuiSystemState');
	// Current epoch
	const currentEpoch = Number(data.data?.epoch || 0);
	const currentEpochStartTime = Number(data.data?.epochStartTimestampMs || 0);
	const epochPeriod = Number(data.data?.epochDurationMs || 0);
	const timeBeforeSpecifiedEpoch =
		epoch > currentEpoch && epoch > 0 && epochPeriod > 0
			? currentEpochStartTime + (epoch - currentEpoch) * epochPeriod
			: 0;

	return {
		...data,
		data: timeBeforeSpecifiedEpoch,
	};
}