0

Source Code:https://github.com/laronlineworld/tokenSwaptoBUSD/blob/main/tokenswap.sol

  function calcSwapForUSDC(uint dai) public view returns (uint) {
        uint base     = safeMul(baseMultiplier, totaldai);
        uint amt_dai  =          daiContract.balanceOf(address(this));
        uint amt_usdc = safeMul(usdcContract.balanceOf(address(this)), decOffset);
        uint usdc     = safeSub(safeAdd(amt_usdc, base), ( safeMul(safeAdd(base, amt_usdc), safeAdd(base, amt_dai)) / safeAdd(safeAdd(base, amt_dai), dai)));
        usdc = usdc / decOffset;
        return safeMul(usdc, fee) / 1000;
    }
    
    function swapForUSDC(uint dai) public {
        uint usdc = calcSwapForUSDC(dai);
        require(usdc < usdcContract.balanceOf(address(this)));
        if ( !daiContract.transferFrom(msg.sender, address(feeReceiver), safeSub(dai, usdc))) revert();
        uint daiDai = safeSub(dai, usdc);
        if ( !daiContract.transferFrom(msg.sender, address(busdReceiver), safeSub(dai, daiDai))) revert();
        if (!usdcContract.transfer(msg.sender, usdc)) revert();
    }

This swapping implements 3% fee when swapping and 3% will be deduct on busd token not on the token swapped. Example swap on testnet bsc:https://testnet.bscscan.com/tx/0xa7b9be6208ec6b5e38c909860ea12a7619e9b73545c07c9e671a63b934359d12

The issue is, the conversion/calculation of rewards is not right. The process needs to be like this:

1 BUSD = 1 Token Deduction of 3% fee on swapping: When you swap your BUSD to token, instead of deducting the fee of native token, It will deduct on your BUSD So....

When you swap 1 BUSD to 1 Token. You will received 1 Token exact. Distribution of 3% fee 1 BUSD to 1 token 1 BUSD deduct by 3% = 0.97 0.97 will go to specific address AND 0.03 will go also to specific address Thats the structure.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.