FatherSonContract

FatherSonContract.sol

// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.12;

import "https://raw.githubusercontent.com/OpenZeppelin/openzeppelin-contracts/master/contracts/token/ERC20/IERC20.sol";

contract TestContract {

    address mySonAddress;
    uint amountToSend;
    uint expirationDate;

    address USDTContractAddress = 0xa16094F42297156809a22A7af5EbA0a1771446C9;

    constructor(address _mySonAddress, uint _amountToSend, uint durationInYears) {
        mySonAddress = _mySonAddress;
        amountToSend = _amountToSend;

        // 60sec*60 == 1min*60 == 1hour -- 1hour * 24 == 1day -- 1day * 365 == 1 year
        expirationDate = block.timestamp + (60*60*24*365*durationInYears);
    }

    function withdraw() external {
        require(block.timestamp >= expirationDate, "Expiration date not reached yet");
        require(msg.sender == mySonAddress, "Only son's address can call this function");

        IERC20(USDTContractAddress).transfer(mySonAddress, amountToSend);
    }

    function getMySonAddress() external view returns(address) {
        return mySonAddress;
    }

    function getTimeRemaining() external view returns(uint) {
        return expirationDate - block.timestamp;
    }
}