// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/draft-ERC20Permit.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/ERC20VotesComp.sol";
import "@openzeppelin/contracts/access/AccessControlEnumerable.sol";

contract Png is ERC20, ERC20Burnable, ERC20Permit, ERC20VotesComp, AccessControlEnumerable {
    bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");
    uint256 public immutable cap;

    constructor(uint96 cap_, uint96 preMint, string memory name_, string memory symbol_)
        ERC20(name_, symbol_)
        ERC20Permit(name_)
    {
        cap = cap_;
        _mint(msg.sender, preMint);
        _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
    }

    function mint(address to, uint256 amount) external onlyRole(MINTER_ROLE) {
        _mint(to, amount);
    }

    function _maxSupply() internal view override returns (uint224) {
        return uint224(cap);
    }

    function _afterTokenTransfer(address from, address to, uint256 amount)
        internal
        override(ERC20, ERC20Votes)
    {
        super._afterTokenTransfer(from, to, amount);
    }

    function _mint(address to, uint256 amount) internal override(ERC20, ERC20Votes) {
        super._mint(to, amount);
    }

    function _burn(address account, uint256 amount) internal override(ERC20, ERC20Votes) {
        super._burn(account, amount);
    }
}