/*jslint node: true, plusplus: true*/
'use strict';
var RAND_MAX = 9999,
    users = {},
    current_active = 0;

function get_random_id() {
    return Math.floor(Math.random() * RAND_MAX);
}

function do_logout(cb) {
    var id = get_random_id();
    if (users.hasOwnProperty(id)) {
        delete users[id];
        current_active--;   // Would fire event here on delete of key
    }
    cb();
    process.nextTick(function () {
        do_logout(cb);
    });
}

function do_login(cb) {
    var time = +new Date(),
        id = get_random_id();
    if (!users.hasOwnProperty(id)) {
        current_active++;   // Would fire event here on insert of key
    }
    users[id] = time;
    cb();
    process.nextTick(function () {
        do_login(cb);
    });
}

function run_benchmark() {
    var start = new Date(),
        done = 0,
        last = 0;
    function cb(v) {
        done++;
    }
    setInterval(function () {
        var x, doneTime = +new Date() - 10000;
        for (x in users) {
            if (users.hasOwnProperty(x) && users[x] < doneTime) {
                delete users[x];
                current_active--;   // Would fire event here on expire
            }
        }
    }, 500);
    setInterval(function () {
        console.log('Throughput:', (done - last), 'r/s, currently active:', current_active);
        last = done;
    }, 1000);
    do_logout(cb);
    do_login(cb);
}

run_benchmark();