ghostcoinToken.sol

// SPDX-License-Identifier: AGPL-3.0-or-later

pragma solidity ^0.8.17; // Designate version of solidity

import '@openzeppelin/contracts/token/ERC20/ERC20.sol'; // ERC20 template

contract GhostCoinToken is ERC20 { // Create contract using ERC20 interface

  constructor() ERC20('GhostCoin Token', 'GHST') { // Token Name and Ticker
    _mint(msg.sender, 10000000); // Mint 10000000 tokens at beginning
  }

  function mint(address to, uint amount) external {
      uint256 dayOfWeek = ((block.timestamp / 86400) + 4) % 7; // 0 = Sunday, 1 = Monday, etc

      require(dayOfWeek != 5); // Require that today is not friday
      _mint(to, amount);
  }
}