Recipe: to calculate RC transaction cost

[TimCliff]

As a developer, I would like to know how to calculate the RC cost of a transaction.

• [x] Recipe to calculate the RC cost of a transaction

[relativityboy]

-> https://steemd.com/@username has resource credit info.

Below is example of a community member's calculation

function (account) {
      var totalShares = parseFloat(account.vesting_shares) + parseFloat(account.received_vesting_shares) - parseFloat(account.delegated_vesting_shares);

      var elapsed = CURRENT_UNIX_TIMESTAMP - account.voting_manabar.last_update_time;
      var maxMana = totalShares * 1000000;
      // 432000 sec = 5 days
      var currentMana = parseFloat(account.voting_manabar.current_mana) + elapsed * maxMana / 432000;

      if (currentMana > maxMana) {
        currentMana = maxMana;
      }

      var currentManaPerc = currentMana * 100 / maxMana;

      return currentManaPerc;
}

[pauliusuza]

I created a feature request for adding an RC estimation endpoint

[roboza]

https://github.com/steemit/rcdemo

[relativityboy]

@pauliusuza regarding steemit/steem#2979, did you see steemit/steem#2982