/*
* Different costs for different user groups plus increased
* copying costs for students during peak hours.
*/
function deviceJobLogHook(inputs, actions) {
  // If it's not a copy job we won't run the rest of this script.
  if (!inputs.job.isCopy) {
    return;
  }

  // staff get charged under a different cost model
  if (inputs.user.isInGroup("Staff")) {
    calculateCopyCostForStaff(inputs,actions);
  }

  // students can get charged extra for using the copier
  // during peak hour.
  if(inputs.user.isInGroup("Students")) {
    calculateCopyCostForPeakHour(inputs,actions);
  }

}

/**
*  This function adjusts the job cost if it's a staff member.
*/
function calculateCopyCostForStaff(inputs, actions) {
  // Using a customised pricing model here
  // We'll keep it simple and differentiate only by paper size -
  // we won't worry about duplex or color mode for this example.
  var staffSimpleModel = {
    A3: 0.3,
    A4: 0.15,
    Default: 0.15 // fall back to default if we can't find the right size
  };

  // analyze the job
  var totalPages = inputs.job.totalPages;
  var paperSizeName = inputs.job.paperSizeName;

  // do a simple calculation
  var costPerPage = staffSimpleModel[paperSizeName] ? staffSimpleModel[paperSizeName] : staffSimpleModel["Default"];
  var adjustedCost = costPerPage * totalPages;

  // change the job cost
  actions.job.setCost(adjustedCost);
  actions.job.addComment("Costs adjusted for staff member");
}

/**
* For this function we'll adjust the copy job pricing
* if the job was done during peak hours.
*/
function calculateCopyCostForPeakHour(inputs, actions) {

  // Set the peak period
  var PEAK_PERIOD_START = 11; // 11am
  var PEAK_PERIOD_END = 15; // 3pm
  var PEAK_RATE = 10; // copying costs are an extra 10% during peak hour

  var cost = inputs.job.cost;
  var date = new Date();
  var hour = date.getHours();

  if (hour >= PEAK_PERIOD_START && hour < PEAK_PERIOD_END) {
    var peakCost = cost + (cost * (PEAK_RATE / 100));
    actions.job.setCost(peakCost);
    actions.job.addComment("Costs adjusted for peak hour");
  }
}