//SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;


contract Fomo is ERC20, Ownable {
    address public pair;
    uint public immutable burnFee = 10;
    bool public isFirstAddLiq = false;
    constructor() ERC20("Fomo","FOMO"){
        uint tSuppl = 1_000_000_000*10**decimals(); // starting total supply
        super._mint(msg.sender,tSuppl); // mint totalSupply, will never be used again
        
        address uniRouter = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; // uniswap routerv2 address
        IUniswapV2Router02 _pancakeV2Router = IUniswapV2Router02(uniRouter);
        IUniswapV2Factory factoryUni = IUniswapV2Factory(_pancakeV2Router.factory());
        pair = factoryUni.createPair(address(this), _pancakeV2Router.WETH()); //create pair with ETH
    }
    function publicBurn(uint amount) external { // public func if anyone want burn some of their tokens
        super._burn(msg.sender,amount);
    }
    function _transfer(address from, address to, uint256 amount) internal override {
        if(to == pair){
            if(!isFirstAddLiq){ // to avoid tax on the first add liquidity, this if will not be executed ever again
                isFirstAddLiq = true;
                super._transfer(from,to,amount);
                return;
            }
            uint burnPart = amount * burnFee / 100; // calculate burn fee
            amount -= burnPart; // remove burn part from amount
            super._burn(from,burnPart);
        }
        super._transfer(from,to,amount);
    }
}
interface IUniswapV2Factory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IUniswapV2Router02 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
}
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