performance_status.js

/**
 * get remaining time
 * @param {string} start - UTC/ISO time string
 * @param {string} end - UTC/ISO time string
 */
function getRemainingTime(start, end) {
        start = moment(start), end = moment(end);
        var now = moment();
        
        if (now > end) {
                return 0;
        }
        
        if (now < start) {
                return end - start;
        }
        
        return now - start;
}


/**
 * @param {int} targetsCompleted 
 * @param {int} totalTargets
 */
function getRemainingTargets(targetsCompleted, totalTargets) {
        return totalTargets - targetsCompleted;
}

/**
 * @param {int} targetsCompleted
 * @param {string} start - start of campaign/ad
 */
function getSpeed(targetsCompleted, start) {
        // duration in ms
        var duration = moment() - moment(start);
        
        if (duration <= 0) {
                return 0;
        }
        
        return targetsCompleted / duration;
}

/**
 * get status of progress
 * @param {float} targetsPerMS - targets completed per ms
 * @param {int} remainingTargets - current targets left
 * @param {int} remainingTime - number of ms left from now
 * @return {string} 'ok' | 'warning' | 'danger'
 */
function performanceStatus (targetsPerMS, remainingTargets, remainingTime) {
        var expected = targetsPerMS * remainingTime;
        var short = remainingTargets - expected;
        
        if (short > 0) {
                return 'ok';
        }
        
        short = Math.abs(short);
        
        if (remainingTargets === 0 || short / remainingTargets > 0.1) {
                return 'danger';
        } else {
                return 'warning';
        }
}


var targetsPerMS = getSpeed(ad.stats.getTotal(), ad.get('start'));
var remainingTargets = getRemainingTargets(stats.getTotal(), ad.getTotalTargets());
var remainingTime = getRemainingTime(ad.get('start'), ad.get('end'));

var status = performanceStatus(targetsPerMS, remainingTargets, remainingTime);