37 lines
800 B
Solidity
37 lines
800 B
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity 0.8.23;
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import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
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contract TimeChecker is Ownable {
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uint256 public duration;
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uint256 public minDuration;
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event DurationUpdated(uint256 indexed duration);
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constructor() {
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duration = 1 days;
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minDuration = 30 minutes;
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}
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/**
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* @dev Check if the time is valid
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*/
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modifier timeValid(uint256 time) {
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require(
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time + duration >= block.timestamp,
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"expired, please send another transaction with new signature"
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);
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_;
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}
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/**
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* @dev Change duration value
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*/
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function updateDuation(uint256 valNew) external onlyOwner {
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require(valNew > minDuration, "duration too short");
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duration = valNew;
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emit DurationUpdated(valNew);
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}
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}
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