Blacksmith-ClaimRewardsFunction.sol

  function claimRewards(address _lpToken) public override {
    updatePool(_lpToken);

    Pool memory pool = pools[_lpToken];
    Miner storage miner = miners[_lpToken][msg.sender];
    BonusToken memory bonusToken = bonusTokens[_lpToken];

    _claimCoverRewards(pool, miner);
    _claimBonus(bonusToken, miner);
    // update writeoff to match current acc rewards & bonus per token
    miner.rewardWriteoff = miner.amount.mul(pool.accRewardsPerToken).div(CAL_MULTIPLIER);
    miner.bonusWriteoff = miner.amount.mul(bonusToken.accBonusPerToken).div(CAL_MULTIPLIER);
  }