catdad/grandma

var estimateDuration = require('./estimate-duration.js');

module.exports = function() {
    var count = 0;

    var duration = estimateDuration();

    var api = {};

    api.include = function include(record) {
        if (!record.report) {
            return api;
        }

        duration.include(record);
        count += 1;

        return api;
    };

    Object.defineProperty(api, 'result', {
        configurable: false,
        enumerable: true,
        get: function() {
            // avoid divide by zero errors
            var seconds = duration.result / 1000;

            if (seconds <= 0) {
                return 0;
            }

            return count / seconds;
        }
    });

    return api;
};