tokenFaucet.sol

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.4;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

contract Coin is ERC20 {
    address public minter;
    uint256 constant public waitTime = 24 hours;
    
    mapping(address => uint) lastMintBlock;
    event Sent(address _from, address _to, uint _amount);

    constructor(uint256 _initialsupply) ERC20("Bread Token", "BREAD") {
        minter = msg.sender;
        _mint(minter, _initialsupply);
    }


    function faucet(uint _amount, address payable _receiver) public {
        require(minter != _receiver, "Not recommended");
        require(_amount <= 100, "You can only request for 100 Bread Tokens from the Faucet");
        require(_receiver == msg.sender, "You can not mint for another EOA");
        require(newMint(_receiver), "Wait for 24 hours");
        
        _mint(_receiver, _amount);
        lastMintBlock[_receiver] = block.timestamp + waitTime;
        emit Sent(minter, _receiver, _amount);
    }  

    function newMint(address _receiver) public view returns(bool) {
        if(lastMintBlock[_receiver] == 0){
            return true;
        }else if(block.timestamp >= lastMintBlock[_receiver]) {
            return true;
        }
        return false;
    }

}