takeReward.scala

@Callable(i)
func takeReward(id: String) = {
    if (keyIsDefined(id) == false) then throwIdError(id) else {
        let paymentValue = getIntegerValue(this, keyPayment(id))
        let oraclePubKey = i.callerPublicKey.toBase58String()
        let oracleResponseKey = keyResponseFromOracle(id, oraclePubKey)
        let oracleResponse = getStringValue(this, oracleResponseKey)

        let resultKey = keyResult(id)
        let resultDataEntry = getStringValue(this, resultKey)

        let alreadyTookKey = keyTookPayment(id, oraclePubKey)
        let alreadyTookPayment = getBooleanValue(this, alreadyTookKey)

        let responsesCount = getResponsesCount(id)

        if (oracleResponse == resultDataEntry && alreadyTookPayment == false) then {
            let paymentAmount = paymentValue / responsesCount
            [
              BooleanEntry(alreadyTookKey, true),
              ScriptTransfer(i.caller, paymentAmount, unit)
          ]
        }else {
            throw("Already took payment or provided data was not valid")
        }

    }
}