Count implementation by Koko codes

KokocodesCount.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8;

// create a timer for increement and decreement but they should only work after 30secs 

contract counter {
    uint256 count;
    uint256 lastRun;

    function add() external {
        require(block.timestamp - lastRun > 30 seconds, 'Need to wait 30 seconds, be calming down');

        // TODO perform the action

        lastRun = block.timestamp;
        count++; 
    }

    function dec() external {
        require(block.timestamp - lastRun > 30 seconds, 'Need to wait 30 seconds, be calming down');
        
        // TODO perform the action

        lastRun = block.timestamp;

        count--;    
    }

    function getlastRun() public view returns (uint256){
        return count;
    }

}