function genRandNum(min, max){
    var count = Math.floor((Math.random() * (max-min)) + min);
    return count;
};
var isAnimationRunning = false;

function animate(opts) {
    var start = new Date;
    var id = setInterval(function() {
        var timePassed = new Date - start;
        var progress = timePassed / opts.duration;
        if (progress > 1) progress = 1;
        var delta = opts.delta(progress);
        opts.step(delta);
        if (progress == 1) {
            clearInterval(id);
            isAnimationRunning = false;  // Reset the global variable
        }
    }, opts.delay || 10);

}
function move(element, delta, duration) {
    var to = 50;

    animate({
        delay: 10,
        duration: duration || 1000, // 1 sec by default
        delta: delta,
        step: function(delta) {
            element.style.right = to*delta + "px";
        }
    });
}
function bounce(progress) {
    return -Math.cos(2.5 * Math.PI * progress) * Math.pow(0.33, progress * 2.5) * 3;
}

String.prototype.allReplace = function(obj) {
    var retStr = this
    for (var x in obj) {
        retStr = retStr.replace(new RegExp(x, 'g'), obj[x])
    }
    return retStr
}

Array.prototype.contains = function ( needle ) {
    for (i in this) {
        if (this[i] == needle) return true;
    }
    return false;
}

var cities = [ "臺北市", "新北市", "高雄市", "新竹市", "屏東市", "臺南市", "臺中市", "桃園市", "竹北市", "彰化市", "嘉義市", "花蓮市", "基隆市", "苗栗市", "南投市", "朴子市", "宜蘭市", "竹北市", "員林市", "太保市"];

texts = [  '目前訪問此報價的網友：100.','15 優惠套餐', '一位', '15 優惠套餐', '一位', '15 優惠套餐'];


function createDiv()
{
    var iDiv = document.createElement('div');
    iDiv.id = 'popUp';
    document.getElementsByTagName('body')[0].appendChild(iDiv);
    popUp = document.getElementById('popUp');
}



// products = genRandNum(9, 10);
products = 12;
k =0;

function showPopUp(){


    if(k == texts.length) {
        setTimeout(function(){
            popUp.style.display = 'none';
        }, 5000);
        return;
    }

    //if (k>2) products-- ;
    if(k==0)
    {
        time = 4500; // time delay for first view
        time2 = 1;
    }
    else
    {
        time =  genRandNum(4500, 5500);
        time2 = genRandNum(2500, 4500);
    }
    setTimeout(function() {
        popUp.style.display = 'none';
        setTimeout(function() {

            popUp.style.display = 'block';
            var currentText = texts[k];
            var people = genRandNum(181, 248);
            if(k%2!=0)products = products - 1;
            //Replace the appropraite texts
            popUp.innerHTML = texts[k].allReplace({ '100': people, '15': products, 'CITY' : cities[Math.floor(Math.random()*cities.length)] });

            //Bounce the popUp
            move(popUp, bounce, 600);


            k++;
            //recursion
            showPopUp();

        },time2);

    }, time);
}

window.onload = function(){
    createDiv();
    showPopUp();
}