Crypto-BEP20-Stakeable-CalculateReward

    /**
      * @notice
      * calculateStakeReward is used to calculate how much a user should be rewarded for their stakes
      * and the duration the stake has been active
     */
      function calculateStakeReward(Stake memory _current_stake) internal view returns(uint256){
          // First calculate how long the stake has been active
          // Use current seconds since epoch - the seconds since epoch the stake was made
          // The output will be duration in SECONDS ,
          // We will reward the user 0.1% per Hour So thats 0.1% per 3600 seconds
          // the alghoritm is  seconds = block.timestamp - stake seconds (block.timestap - _stake.since)
          // hours = Seconds / 3600 (seconds /3600) 3600 is an variable in Solidity names hours
          // we then multiply each token by the hours staked , then divide by the rewardPerHour rate 
          return (((block.timestamp - _current_stake.since) / 1 hours) * _current_stake.amount) / rewardPerHour;
      }