var sliderId = 0;
var sliderDelay = 7000;
$(document).ready(
    function(){
        addnavigateButtons();
        sliderId = setInterval("setNextActiveNthTab()", sliderDelay);
        recountValues();
        mainTabActions();
        mainTabsActions();
        //$(".main-tabs-navi-right").autotrigger("click", 4000);
    }
);
function checkNaviArrows(){
    $(".main-tabs-container.active").each(
        function(){
            $counter = $(this).find(".main-tabs-tab").length;
            if($counter <= 4){
                $(".main-tabs-navi-left").hide();
                $(".main-tabs-navi-right").hide();
            }
            if($counter > 4){
                $(".main-tabs-navi-left").show();
                $(".main-tabs-navi-right").show();
            }
        }
    );
//    $counter = $(".main-tabs-container.active").find(".main-tabs-tab").length;
//    alert($counter);
}
function sliderNavigationActiveate() {
    $(".slider-navigation-element").click(
        function(){
            $(".slider-navigation-element").removeClass("active");
            $(this).addClass("active");
            var tabNo = $(".slider-navigation-element").index($(this));
            tabNo++;
            activateNthTab(tabNo);
            clearInterval(sliderId);
        }
    );
    $(".slider-navigation-element").dblclick(
        function(){
            $(".slider-navigation-element").removeClass("active");
            $(this).addClass("active");
            var tabNo = $(".slider-navigation-element").index($(this));
            tabNo++;
            activateNthTab(tabNo);
        }
    );
}
function addnavigateButtons() {
    var cont = '';
    $(".slider-element").each(
        function(i) {
            cont += '<div class="slider-navigation-element">' + Math.round(i+1) + '</div>';
        }
    );
    $("#slider-navigation").html(cont);
    sliderNavigationActiveate();
    setActiveNthTab(1);
}
function setNextActiveNthTab() {
    var tabNo = $(".slider-navigation-element").index($(".slider-navigation-element.active"));
    var tabLen = $(".slider-navigation-element").length;
    if (tabNo+2 > tabLen) {
        tabNo = -1;
    }
    setActiveNthTab(tabNo+2);
}
function setActiveNthTab(tabNo) {
    $(".slider-navigation-element:nth-child(" + tabNo + ")").trigger("dblclick");
}
function activateNthTab(tabNo) {
    $(".slider-element:visible").fadeOut("slow");
    $(".slider-element:nth-child(" + tabNo + ")").fadeIn("slow");
}
//przy tabach nalezy wywolac funkcje recountValues()!!
function recountValues() {
    //if(getFromBegin() == '' && getFromEnd() == ''){
//        setFromBegin(1);
//        setFromEnd($(".main-tabs-container:visible .main-tabs-tab").length);
    //}
    $(".main-tabs-container").each(
        function(i) {
            var len = $(".main-tabs-container:nth-child(" + (i+2) + ") .main-tabs-tab").length;
            $(".main-tabs-container:nth-child(" + (i+2) + ") .from-begin").html("1");
            $(".main-tabs-container:nth-child(" + (i+2) + ") .from-end").html(len);
        }
    );
}
function mainTabActions() {
    $(".main-tabs-navi-left").click(
        function() {
            $(".main-tabs-navi-left").unbind("click");
            mainTabLeft();
        }
    );
    $(".main-tabs-navi-right").click(
        function() {
            $(".main-tabs-navi-right").unbind("click");
            mainTabRight();
        }
    );
}
function mainTabLeft() {
    var leftPos = $(".main-tabs-container:visible .main-tabs-holder").css("margin-left");
    var len = leftPos.length;
    leftPos = Math.round(leftPos.substring(0, len-2));
    if(leftPos >= -2 ){
        loadFromEnd();
        //return;
    }
    $(".main-tabs-container:visible .main-tabs-holder").animate({
        marginLeft: '+=238'
    }, 1000, function() {
        $(".main-tabs-navi-left").bind("click",
            function() {
                $(".main-tabs-navi-left").unbind("click");
                mainTabLeft();
            }
        );
        $(".main-tabs-navi-right").bind("click",
            function() {
                $(".main-tabs-navi-right").unbind("click");
                mainTabRight();
            }
        );
    });
    removeTabsFromEnd();
}
function removeTabsFromEnd(){
    var tabLen = $(".main-tabs-container:visible .main-tabs-tab").length;
    var a = getFromEnd();
    if (tabLen >= (3*a) ) {
        for(i = 0; i < a; i++) {
            $(".main-tabs-container:visible .main-tabs-tab:last-child").remove();
        }
        setFromBegin(a - (getFromEnd()-1));
    }
}
function removeTabsFromBegin(){
    var tabLen = $(".main-tabs-container:visible .main-tabs-tab").length;
    var a = getFromEnd();
    if (tabLen >= (3*a) ) {
        $(".main-tabs-container.active .main-tabs-holder").css("margin-left", '0');
        for(i = 0; i < a; i++) {
            $(".main-tabs-container:visible .main-tabs-tab:last-child").remove();
        }
        setFromBegin(a - (getFromEnd()-1));
    }
}
function mainTabRight() {
    var leftPos = $(".main-tabs-container:visible .main-tabs-holder").css("margin-left");
    var len = leftPos.length;
    leftPos = Math.round(leftPos.substring(0, len-2));
    var tabLen = $(".main-tabs-container:visible .main-tabs-tab").length;
    var maxPos = Math.round((tabLen-4)*238);
    if((maxPos + leftPos) <= 0 ){
        loadFromBegin();
        //return;
    }
    $(".main-tabs-container:visible .main-tabs-holder").animate({
        marginLeft: '-=238'
    }, 1000, function() {
        $(".main-tabs-navi-left").bind("click",
            function() {
                $(".main-tabs-navi-left").unbind("click");
                mainTabLeft();
            }
        );
        $(".main-tabs-navi-right").bind("click",
            function() {
                $(".main-tabs-navi-right").unbind("click");
                mainTabRight();
            }
        );
        removeTabsFromBegin();
    });
}
function loadFromBegin() {
    $(".main-tabs-container:visible .main-tabs-tab:nth-child(" + getFromBegin() + ")").clone().insertAfter($(".main-tabs-container:visible .main-tabs-tab:last-child"));
    var v = getFromBegin();
    v++;
    setFromBegin(v);
}
function loadFromEnd() {
    $(".main-tabs-container:visible .main-tabs-holder").css("margin-left", '-238px');
    $(".main-tabs-container:visible .main-tabs-tab:nth-child(" + getFromEnd() + ")").clone().insertBefore($(".main-tabs-container:visible .main-tabs-tab:first-child"));
    var v = getFromBegin();
    v++;
    setFromBegin(v);
}
function setFromBegin(val) {
    $(".main-tabs-container:visible .from-begin").html(val);
}
function getFromBegin() {
    return $(".main-tabs-container:visible .from-begin").html();
}
function setFromEnd(val) {
    $(".main-tabs-container:visible .from-end").html(val);
}
function getFromEnd() {
    return $(".main-tabs-container:visible .from-end").html();
}
// TABY: jezeli nie beda sie wyswietlaly te co trzeba  - to zmien wartosc zmiennej no z ...+2 na ...+1 :P
function mainTabsActions() {
    $(".main-tab").click(
        function() {
            var no = Math.round($(".main-tab").index(this) + 2);
            $(".main-tab").removeClass("active");
            $(this).addClass("active");
            $(".main-tabs-container:visible").removeClass("active").fadeOut();
            $(".main-tabs-container:nth-child(" + no + ")").addClass("active").fadeIn();
            //recountValues();
            checkNaviArrows();
        }
    );
    $(".main-tab:nth-child(2)").click();
}