// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

contract BullRunToken is ERC20, Ownable {
    uint price;
    address public bullNft;

    constructor() ERC20("Bull Run Token", "BLTK") {}

    function decimals() public pure override returns (uint8) {
        return 9;
    }

    function buyToken(uint _usdtValue) public onlyGetter {
        uint getToken = getValue(_usdtValue);
        _mint(msg.sender, getToken);
    }

    function getValue(uint _usdtValue) public view returns (uint) {
        uint getToken = _usdtValue * price;
        return getToken;
    }

    function setPrice(uint usdtAmount, uint bullrunAmount) public onlyOwner {
        price = bullrunAmount / usdtAmount;
    }

    function changeGetter(address _bullNft) public onlyOwner {
        require(_bullNft != bullNft, "already set address");
        bullNft = _bullNft;
    }

    function wdToken(address _addressToken) public onlyOwner {
        uint balance = IERC20(_addressToken).balanceOf(address(this));
        require(balance > 0, "no balance");
        IERC20(_addressToken).transfer(msg.sender, balance);
    }

    modifier onlyGetter() {
        require(msg.sender == bullNft, "only nft perform");
        _;
    }
}