payout.js

/**
 * A shipment has been received by an importer
 * @param {org.acme.shipping.perishable.ShipmentReceived} shipmentReceived - the ShipmentReceived transaction
 * @transaction
 */
async function payOut(shipmentReceived) {  // eslint-disable-line no-unused-vars

    const contract = shipmentReceived.shipment.contract;
    const shipment = shipmentReceived.shipment;
    let payOut = contract.unitPrice * shipment.unitCount;

    console.log('Received at: ' + shipmentReceived.timestamp);
    console.log('Contract arrivalDateTime: ' + contract.arrivalDateTime);

    // set the status of the shipment
    shipment.status = 'ARRIVED';

    // if the shipment did not arrive on time the payout is zero
    if (shipmentReceived.timestamp > contract.arrivalDateTime) {
        payOut = 0;
        console.log('Late shipment');
    } else {
        // find the lowest temperature reading
        if (shipment.temperatureReadings) {
            // sort the temperatureReadings by centigrade
            shipment.temperatureReadings.sort(function (a, b) {
                return (a.centigrade - b.centigrade);
            });
            const lowestReading = shipment.temperatureReadings[0];
            const highestReading = shipment.temperatureReadings[shipment.temperatureReadings.length - 1];
            let penalty = 0;
            console.log('Lowest temp reading: ' + lowestReading.centigrade);
            console.log('Highest temp reading: ' + highestReading.centigrade);

            // does the lowest temperature violate the contract?
            if (lowestReading.centigrade < contract.minTemperature) {
                penalty += (contract.minTemperature - lowestReading.centigrade) * contract.minPenaltyFactor;
                console.log('Min temp penalty: ' + penalty);
            }

            // does the highest temperature violate the contract?
            if (highestReading.centigrade > contract.maxTemperature) {
                penalty += (highestReading.centigrade - contract.maxTemperature) * contract.maxPenaltyFactor;
                console.log('Max temp penalty: ' + penalty);
            }

            // apply any penalities
            payOut -= (penalty * shipment.unitCount);

            if (payOut < 0) {
                payOut = 0;
            }
        }
    }