// THROTTLE
function throttle(fn, threshhold, scope) {
  threshhold || (threshhold = 250);
  var last,
      deferTimer;
  return function () {
    var context = scope || this;

    var now = +new Date,
        args = arguments;
    if (last && now < last + threshhold) {
      // hold on to it
      clearTimeout(deferTimer);
      deferTimer = setTimeout(function () {
        last = now;
        fn.apply(context, args);
      }, threshhold);
    } else {
      last = now;
      fn.apply(context, args);
    }
  };
}


// SECTIONS MANIPULATION
$(document).ready(function() {
    var sections = $('section.container');

    $(window).scroll(throttle(function() {

        var currentPosition = $(this).scrollTop();

            sections.each(function() {
            var $el = $(this);

            var offset = $el.offset(),
            height = $el.height();

            var top = offset.top,
            bottom = top + height;

            $el.toggleClass('selected', (currentPosition >= top && currentPosition < bottom));
        });
    },60));
});


// MANIPULATE MENU, CREDITS AND SHARE BUTTONS
$( document ).ready(function() {
    $(".menuToggleButton").click(function() {
        $("body").toggleClass("mobileMenuExpanded");
    });

    $(".creditsToggleButton").click(function() {
        $("body").toggleClass("creditsExpanded");
    });

    $(".socialLinks li span").click(function() {
        $(this).toggleClass("showThisShare");
    });
});



// AUTOPLAY VIDEOS

function isReadyToPlay(elem)
{
    var docViewTop = $(window).scrollTop();
    var docViewBottom = docViewTop + $(window).height();

    var elemTop = $(elem).offset().top;
    var elemBottom = elemTop + $(elem).height();

    var topFraction = 10;
    var bottomFraction = 250;

    elemTop = elemTop - topFraction;
    elemBottom = elemBottom - bottomFraction;

    //return ( (elemBottom <= docViewBottom) && (elemTop >= docViewTop) );
    return  ( elemBottom > docViewTop && elemTop < docViewTop )
     || ( elemTop < docViewBottom && elemBottom > docViewBottom )
     || ( elemTop > docViewTop && elemBottom < docViewBottom );
}

$(window).scroll(throttle(function() {
    $('.modernizr_no-touch .jsPlay video').each(function() {
        var $el = $(this).attr('data-i-target');

        if ($el) {
            $el = $($el);
        } else {
            $el = this;
        }

        if(isReadyToPlay($el)) {
            this.play();
        } else {
            this.pause();
        }
    });
},60));

$('.modernizr_no-touch .jsPlay video').on('play', function () {
    $('.modernizr_no-touch .jsPlay video').not($(this).get(0)).each(function () {
        $(this).get(0).pause();
    });
});



//REQUIRE JS
requirejs.config({
    baseUrl: '../common/js',
    paths: {
        'videojs': 'plugins/video-js'
    }
});

require(['videojs'], function (videojs) {
    videojs.options.flash.swf = "../common/js/plugins/video-js.swf";
});

requirejs(["analytics"], function(Analytics) {
    var netscopeParameter = document.location.pathname;
    if(netscopeParameter === '/') {
        netscopeParameter = 'Homepage_do_site';
    }

    var analytics = new Analytics({
        googleanalytics: {
            id: 'UA-4263503-16',
            configObject: {
                'cookieDomain' : 'sapo.pt'
            }
        },
        sapoanalytics: {
            swakt: "24b385df-4bb8-4e29-a51f-defae04777fd",
            swasection : document.location.pathname,
            swasubsection : document.location.pathname,
            swasectiongrp : 'Impresa Publishing',
            swasubsectiongrp : 317344,
            swacontent : '',
            swachannel : document.title
        },
        netscope: {
            id: 'pzObuT8RwBPt9Har2hEswLb.LSnwzSdM1eV554gHvI7.Q7',
            extraparameters: netscopeParameter
        }
    });

    analytics.init();
    analytics.trackPage( document.location.pathname, document.title );

});


// NEXT PAGE
function nextPage() {
    var data, scroll, viewport, value = 0;

    scroll = $(window).scrollTop();
    viewport = document.documentElement && document.documentElement.clientHeight || window.innerHeight;

    data = $('.anchorTarget').map(function(idx, el) {
        var $el = $(el);

        return {
            "$el": el,
            offset: $el.offset().top - scroll
        };
    }).filter(function(idx, data) {
        return data.offset > viewport / 2;
    }).toArray();

    data = data && data[0];

    if (data && (data.offset < viewport || $(data.$el).hasClass('anchorForce'))) {
        value = scroll + data.offset;
    } else {
        value = scroll + (viewport * 0.9 | 0);
    }

    $("html, body").animate({
        scrollTop: (value - 33)
    }, 'slow', 'swing');

    return value;
}



// FIX VH AND VW FOR IOS 7
$(function() {
    var iOS = navigator.userAgent.match(/(iPod|iPhone|iPad)/);
    if(iOS){

        function iosVhHeightBug() {
            var height = $(window).height();
                setHeight100vh = $(".solidColorWrapper, .pinnedMedia .fullWidth .pictureWrapper, .pinnedMedia .fullWidth .videoWrapper, .scrollableContent .slide");
                setMinHeight50vh = $(".scrollableContent");
                setMinHeight100vh = $(".container .inner.viewportHeight");
                setPaddingTop15vh = $(".layoutVersion_lt1024 .scrollableContent.contentInLine .listContainer");
                setPaddingBottom50vh = $(".scrollableContent .listContainer");

            $(setHeight100vh).css('height', height);
            $(setMinHeight50vh).css('min-height', (height * 0.5));
            $(setMinHeight100vh).css('min-height', height);
            $(setPaddingTop15vh).css('padding-top', height * 0.15);
            $(setPaddingBottom50vh).css('padding-bottom', height * 0.5);
        }

        iosVhHeightBug();
        $(window).bind('resize', iosVhHeightBug);

    }
});