/**
 * Swiper 3.3.0
 * Most modern mobile touch slider and framework with hardware accelerated transitions
 *
 * http://www.idangero.us/swiper/
 *
 * Copyright 2016, Vladimir Kharlampidi
 * The iDangero.us
 * http://www.idangero.us/
 *
 * Licensed under MIT
 *
 * Released on: January 10, 2016
 */
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t=Date.now(),i=t-z;if(b.allowClick&&(b.updateClickedSlide(e),b.emit("onTap",b,e),300>i&&t-H>300&&(I&&clearTimeout(I),I=setTimeout(function(){b&&(b.params.paginationHide&&b.paginationContainer.length>0&&!a(e.target).hasClass(b.params.bulletClass)&&b.paginationContainer.toggleClass(b.params.paginationHiddenClass),
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t=a(e),i=0;i<this.length;i++)if(1===t.length)t[0].parentNode.insertBefore(this[i],t[0].nextSibling);else if(t.length>1)for(var r=0;r<t.length;r++)t[r].parentNode.insertBefore(this[i].cloneNode(!0),t[r].nextSibling)},next:function(t){return new e(this.length>0?t?this[0].nextElementSibling&&a(this[0].nextElementSibling).is(t)?[this[0].nextElementSibling]:[]:this[0].nextElementSibling?[this[0].nextElementSibling]:[]:[])},nextAll:function(t){var i=[],r=this[0];if(!r)return new e([]);for(;r.nextElementSibling;){var s=r.nextElementSibling;t?a(s).is(t)&&i.push(s):i.push(s),r=s}return new e(i)},prev:function(t){return new e(this.length>0?t?this[0].previousElementSibling&&a(this[0].previousElementSibling).is(t)?[this[0].previousElementSibling]:[]:this[0].previousElementSibling?[this[0].previousElementSibling]:[]:[])},prevAll:function(t){var i=[],r=this[0];if(!r)return new e([]);for(;r.previousElementSibling;){var s=r.previousElementSibling;t?a(s).is(t)&&i.push(s):i.push(s),r=s}return new e(i)},parent:function(e){for(var t=[],i=0;i<this.length;i++)e?a(this[i].parentNode).is(e)&&t.push(this[i].parentNode):t.push(this[i].parentNode);return a(a.unique(t))},parents:function(e){for(var t=[],i=0;i<this.length;i++)for(var r=this[i].parentNode;r;)e?a(r).is(e)&&t.push(r):t.push(r),r=r.parentNode;return a(a.unique(t))},find:function(a){for(var t=[],i=0;i<this.length;i++)for(var r=this[i].querySelectorAll(a),s=0;s<r.length;s++)t.push(r[s]);return new e(t)},children:function(t){for(var i=[],r=0;r<this.length;r++)for(var s=this[r].childNodes,n=0;n<s.length;n++)t?1===s[n].nodeType&&a(s[n]).is(t)&&i.push(s[n]):1===s[n].nodeType&&i.push(s[n]);return new e(a.unique(i))},remove:function(){for(var e=0;e<this.length;e++)this[e].parentNode&&this[e].parentNode.removeChild(this[e]);return this},add:function(){var e,t,i=this;for(e=0;e<arguments.length;e++){var r=a(arguments[e]);for(t=0;t<r.length;t++)i[i.length]=r[t],i.length++}return i}},a.fn=e.prototype,a.unique=function(e){for(var a=[],t=0;t<e.length;t++)-1===a.indexOf(e[t])&&a.push(e[t]);return a},a}()),r=["jQuery","Zepto","Dom7"],s=0;s<r.length;s++)window[r[s]]&&e(window[r[s]]);var n;n="undefined"==typeof i?window.Dom7||window.Zepto||window.jQuery:i,n&&("transitionEnd"in n.fn||(n.fn.transitionEnd=function(e){function a(s){if(s.target===this)for(e.call(this,s),t=0;t<i.length;t++)r.off(i[t],a)}var t,i=["webkitTransitionEnd","transitionend","oTransitionEnd","MSTransitionEnd","msTransitionEnd"],r=this;if(e)for(t=0;t<i.length;t++)r.on(i[t],a);return this}),"transform"in n.fn||(n.fn.transform=function(e){for(var a=0;a<this.length;a++){var t=this[a].style;t.webkitTransform=t.MsTransform=t.msTransform=t.MozTransform=t.OTransform=t.transform=e}return this}),"transition"in n.fn||(n.fn.transition=function(e){"string"!=typeof e&&(e+="ms");for(var a=0;a<this.length;a++){var t=this[a].style;t.webkitTransitionDuration=t.MsTransitionDuration=t.msTransitionDuration=t.MozTransitionDuration=t.OTransitionDuration=t.transitionDuration=e}return this})),window.Swiper=t}(),"undefined"!=typeof module?module.exports=window.Swiper:"function"==typeof define&&define.amd&&define([],function(){"use strict";return window.Swiper});
;
document.addEventListener('DOMContentLoaded', function () {
  signIn();

  newsukToggle(".open-newsuk");

  createSwiper();

  createSwiperSubNav('.sun-header--nav');

  // GALLERY
  openGallery();

  teaserShareCount();

  if(isMobile()) {
    scrollWindow();
    toggleSearchMobile();
    subnavToggle();
    createSwiperSubNav('.club-nav--mobile');
    toggleCaption();
    swapActiveSubnav();
    teaserLeadEllipsis();
  } else {
    miniNavScrollEvent();
    createSwiperSubNav('.sub-nav');
    createSwiperSubNav('.club-nav--desktop');
    popupBox();
  }

});

// reload the page when navigating using back/forward in Safari to prevent page freeze
window.addEventListener('pageshow', function (evt) {
  if (evt.persisted) {
    location.reload();
  }
});

function signIn () {
  var loginNode,
    loginLink = thesun_login_link();

  if ( readCookie('acs_ngn') ) {

    // For Desktop
    var signInWrap = document.querySelector('div.sign-in');
    var signInAnchor = document.querySelector('div.sign-in a');
    signInAnchor.parentNode.removeChild(signInAnchor);

    // For Mobile
    var signInLiWrap = document.querySelector('li.sign-in');
    var signInLiAnchor = document.querySelector('li.sign-in a');
    signInLiAnchor.parentNode.removeChild(signInLiAnchor);

    var icon = document.createElement('span');
    icon.setAttribute('class', 'icon icon-avatar');

    var signIn = document.createElement('a');
    signIn.setAttribute('href', loginLink.replace('login', 'home'));
    signIn.textContent = 'View Profile';

    // For Mobile
    signInLiWrap.appendChild(signIn);

    // For Desktop
    var signInD = signIn.cloneNode(true);
    signInD.appendChild(icon);
    signInWrap.appendChild(signInD);
  } else {
    loginNode = document.querySelector('div.sign-in a')
    if (null !== loginNode) {
      loginNode.href = loginLink
    }
  }
}

// TOGGLES TOP BLACK BAR
function newsukToggle (sel) {
  var openClass = 'open';
  addEventListenerList(document.querySelectorAll(sel), 'click', function () {
    if (hasClass(document.querySelector('.sun-newsuk'), 'open')) {
      closeNewsuk(openClass);
    } else {
      if(hasClass(document.querySelector('.sun-header--search'), 'open')) {
        closeSearchMobile();
        setTimeout(function () {
          openNewsuk(openClass);
        }, 200);
      } else {
        openNewsuk(openClass);
      }
    }
  });
}

function closeNewsuk (openClass) {
  removeClass(document.querySelector('.sun-newsuk'), openClass);

  if(!isMobile()) {
    removeClass(document.querySelector('.sun-header--wrap'), openClass);
    removeClass(document.querySelector('.sun-header--nav'), openClass);
    removeClass(document.querySelector('.sun-newsuk__button'), openClass);
    if(document.querySelector('.sub-nav__container')) {
      removeClass(document.querySelector('.sub-nav__container'), openClass);
    }
    if(document.querySelector('.sun-header-bg')) {
      removeClass(document.querySelector('.sun-header-bg'), openClass);
    }
  } else {
    removeClass(document.querySelector('html'), 'newsuk-open');
    removeClass(document.querySelector('.mobile-toggles'), openClass);
    removeClass(document.querySelector('.sun-newsuk .close'), openClass);
  }
}

function openNewsuk (openClass) {
  addClass(document.querySelector('.sun-newsuk'), openClass);

  if(!isMobile()) {
    addClass(document.querySelector('.sun-header--wrap'), openClass);
    addClass(document.querySelector('.sun-header--nav'), openClass);
    addClass(document.querySelector('.sun-newsuk__button'), openClass);
    if(document.querySelector('.sub-nav__container')) {
      addClass(document.querySelector('.sub-nav__container'), openClass);
    }
    if(document.querySelector('.sun-header-bg')) {
      removeClass(document.querySelector('.sun-header-bg'), 'scrolling-remove');
      addClass(document.querySelector('.sun-header-bg'), openClass);
    }
  } else {
    addClass(document.querySelector('html'), 'newsuk-open');
    addClass(document.querySelector('.mobile-toggles'), openClass);
    addClass(document.querySelector('.sun-newsuk .close'), openClass);
  }
}

// WHEN PAGE SCROLLS, SLIDE DOWN MINI NAV
function miniNav (ev) {
  var sunHeaderNav = document.querySelector('.sun-header--nav');
  var sunHeaderNavBg = document.querySelector('.sun-header-bg');
  var subNav = document.querySelector('.sub-nav__container')

  if( document.documentElement.scrollTop >= 200 || document.body.scrollTop >= 100 ) {
    removeClass(document.querySelector('.sun-header--wrap'), 'open');
    removeClass(sunHeaderNav, 'open');
    removeClass(document.querySelector('.sun-newsuk'), 'open');
    removeClass(document.querySelector('.sun-newsuk__button'), 'open');

    if(subNav) {
      removeClass(subNav, 'open');
    }
  }

  if( document.documentElement.scrollTop >= 250 || document.body.scrollTop >= 250 ) {
    removeClass(sunHeaderNav, 'sun-header__mini-remove');
    removeClass(sunHeaderNavBg, 'scrolling-remove');

    addClass(sunHeaderNav, 'sun-header__mini');
    addClass(sunHeaderNavBg, 'scrolling');
  } else {
    addClass(sunHeaderNav, 'sun-header__mini-remove');
    addClass(sunHeaderNavBg, 'scrolling-remove');

    setTimeout(function () {
      removeClass(sunHeaderNav, 'sun-header__mini');
      removeClass(sunHeaderNavBg, 'scrolling');
    }, 100)
  }
}

function miniNavScrollEvent () {
  window.addEventListener('scroll', debounce(miniNav, 10));
}

// POPUP BOX
function popupBox () {
  var openPopup = document.querySelectorAll('.open-popup-box');

  addEventListenerList(openPopup, 'click', function (ev) {
    ev.preventDefault();

    var allBoxes = document.querySelectorAll('.popup-box');
    var allOpenBoxes = document.querySelectorAll('.open-popup-box');
    for (var i = 0, len = allBoxes.length; i < len; i++) {
      removeClass(allBoxes[i], 'open');
      removeClass(allOpenBoxes[i], 'open');
    }

    var targetElement = ev.target || ev.srcElement;

    if ( hasClass(targetElement, 'place-inner') ) {
      targetElement = targetElement.parentNode;
    }

    if ( hasClass(targetElement, 'icon-search') ) {
      targetElement = targetElement.parentNode;
    }

    var box = targetElement.nextSibling.nextSibling;

    addClass(targetElement, 'open');
    addClass(box, 'open');

    if (box.querySelector('input')) {
      box.querySelector('input').focus();
    }
  });

  popupBoxClose();
}

// CLOSE POPUP BOX
function popupBoxClose () {
  var closePopup = document.querySelectorAll('.popup-box--close');

  addEventListenerList(closePopup, 'click', function (ev) {
    ev.preventDefault();

    var targetElement = ev.target || ev.srcElement;
    var box = targetElement.parentNode;
    var popupButton = targetElement.parentNode.previousSibling.previousSibling;

    removeClass(box, 'open');
    removeClass(popupButton, 'open');
  })
}

function createSwiper () {
  var allSwiper = document.querySelectorAll('.rail .swiper-container');

  for (var i = 0, len = allSwiper.length; i < len; i++) {

    var groupNum = allSwiper[i].parentNode.getAttribute("data-slide-count");
    var groupNumTablet = allSwiper[i].parentNode.getAttribute("data-slide-count-tablet");
    var groupNumMobile = 2;

    if ( hasClass(allSwiper[i], 'swiper-container-gallery') ) {
      groupNumTablet, groupNumMobile = 1;
    }

    var swiper = new Swiper(allSwiper[i], {
      slidesPerView: 'auto',
      slidesPerGroup: groupNum * 1,
      simulateTouch: false,

      prevButton: allSwiper[i].querySelector('.swiper-button-prev'),
      nextButton: allSwiper[i].querySelector('.swiper-button-next'),

      pagination: allSwiper[i].querySelector('.swiper-pagination'),
      paginationClickable: true,

      breakpoints: {
        980: {
          slidesPerGroup: groupNumTablet * 1
        },
        675: {
          slidesPerGroup: groupNumMobile,
          paginationType: 'fraction'
        }
      },

      onInit: function ( swiper ) {
        var pagination = swiper.paginationContainer[0];
        if ( pagination.querySelectorAll('.swiper-pagination-bullet').length == 1 ) {
          pagination.remove();
        }
      }
    });
  }
}

function createSwiperSubNav (sel) {
  var selSwiper = sel+' .swiper-container';

  if (document.querySelector(sel)) {

    var index = 0;
    var isActive = false;

    var lis = document.querySelectorAll(selSwiper+' .swiper-slide');
    for (var len = lis.length; index < len; ++index) {
      if (lis[index].className.match(/\bactive\b/)) {
        isActive = true;
        break;
      }
    }

    if ( !isActive ) {
      index = 0;
    }

    var subSwiper = new Swiper(selSwiper, {
      slidesPerView: 'auto',
      freeMode: true,

      prevButton: sel+' .swiper-button-prev',
      nextButton: sel+' .swiper-button-next',

      initialSlide: index,

      onInit: function (swiper) {
        if ( sel != '.club-nav--mobile' && swiper.translate < 0 ) {
          swiper.setWrapperTranslate(swiper.translate);
        }
        if ( sel == '.club-nav--mobile' && swiper.translate < 0 ) {
          swiper.setWrapperTranslate(swiper.translate + 20);
        }
      }
    });

    setTimeout(function () {
      subSwiper.update(true);
    }, 1)

  }
}

// FIND PARENT IF HAS SPECIFIED CLASS
function findAncestor (el, cls) {
  while ((el = el.parentElement) && !el.classList.contains(cls));
  return el;
}

// GALLERY
function openGallery () {
  if( window.location.hash == '#gallery' && !isMobile() ) {
    addClass(document.querySelector('.gallery-popup'), 'open');
    createGallery('hash');
  }

  addEventListenerList(document.querySelectorAll('.open-gallery'), 'click', function (ev) {
    ev.preventDefault(ev);

    var targetElement = ev.target || ev.srcElement;
    var parent;

    if ( targetElement.tagName == 'IMG' ) {
      parent = findAncestor(targetElement, 'open-gallery');
    }

    if ( targetElement.tagName == 'SPAN' ) {
      parent = findAncestor(targetElement, 'open-gallery');
    }

    if ( targetElement.tagName == 'DIV' ) {
      parent = findAncestor(targetElement, 'open-gallery');
    }

    addClass(document.querySelector('.gallery-popup'), 'open');

    createGallery(parent);
  });
}

function createGallery (elem) {
  addClass(document.querySelector('html'), 'galleryOpen');

  var galleryObj = galleryData;

  var swiperWrapper = document.querySelector('.gallery-popup .swiper-wrapper');
  var swiperCaption = document.querySelector('.gallery-popup .swiper-caption-list');
  var swiperCaptionWrap = document.querySelector('.gallery-popup .swiper-caption');
  var captionHeight = [];

  for (var i = 0, len = galleryObj.length; i < len; i++) {

    var gallerySlide = document.createElement( 'div' );
    gallerySlide.setAttribute( 'class', 'swiper-slide' );
    gallerySlide.setAttribute( 'data-hash', 'image-'+(i+1) );

    var gallerySlideImageWrap = document.createElement( 'div' );
    gallerySlideImageWrap.setAttribute( 'class', 'gallery-image-wrap' );

    var gallerySlideImage = document.createElement( 'img' );
    gallerySlideImage.setAttribute( 'src', galleryObj[i].img );
    gallerySlideImage.setAttribute( 'alt', galleryObj[i].caption );

    gallerySlideImageWrap.appendChild( gallerySlideImage );
    gallerySlide.appendChild( gallerySlideImageWrap );
    swiperWrapper.appendChild( gallerySlide );

    var gallerycredit = '';
    if ( 'undefined' !== typeof galleryObj[i] && '' !== galleryObj[i].credit ) {
      gallerycredit = document.createElement( 'span' );
      gallerycredit.setAttribute( 'class', 'credit' );
      var creditText = document.createTextNode( 'Image: ' + galleryObj[i].credit );
      gallerycredit.appendChild( creditText );
    }

    var gallerycaption = document.createElement( 'p' );
    gallerycaption.setAttribute( 'class', 'cap cap' + i );
    var captionText = document.createTextNode( galleryObj[i].caption );
    gallerycaption.appendChild( captionText );
    if ( '' !== gallerycredit ) {
      gallerycaption.appendChild( gallerycredit );
    }

    swiperCaption.appendChild( gallerycaption );
    captionHeight[i] = gallerycaption.offsetHeight;
  }

  var index;

  if (elem == 'hash') {
    index = 0;
  } else {
    index = elem.getAttribute('data-index');
  }

  if ( isMobile() ) {
    captionHeight.sort(function(a,b){return b - a});
    swiperCaption.style.height = captionHeight[0] + 10 + 'px';
    swiperCaptionWrap.style.bottom = -(captionHeight[0]+32) + 'px';
  }

  createSwiperGallery(index)
}

function closeGallery (swiper) {
  addEventListenerList(document.querySelectorAll('.close-gallery'), 'click', function (ev) {
    var shareEmail;
    ev.preventDefault(ev);

    shareEmail = document.getElementById('sharing_email');
    if ( shareEmail ) {
      shareEmail.style.display = 'none';
    }

    removeClass(document.querySelector('html'), 'galleryOpen');

    removeClass(document.querySelector('.gallery-popup'), 'open');

    removeClass( document.querySelector('.gallery-image-load-cover'), 'loaded');

    var slides = document.querySelectorAll('.gallery-popup .swiper-wrapper .swiper-slide');
    var captions = document.querySelectorAll('.gallery-popup .swiper-caption-list .cap');

    for (var i = 0, len = slides.length; i < len; i++) {
      slides[i].parentNode.removeChild(slides[i]);
      captions[i].parentNode.removeChild(captions[i]);
    };

    swiper.destroy(true, true);
  });
}

function createSwiperGallery (elemIndex) {
  var imageCount = 0;
  var swiper = new Swiper('.gallery-popup .swiper-container', {
    initialSlide: elemIndex,
    slidesPerView: 'auto',
    centeredSlides: true,
    simulateTouch: false,

    preloadImages: true,
    updateOnImagesReady: true,

    nextButton: '.gallery-popup .swiper-button-next',
    prevButton: '.gallery-popup .swiper-button-prev',

    pagination: '.gallery-popup .swiper-pagination',
    paginationType: 'fraction',

    onInit: function (swiper) {
      removeClass(document.querySelector('.gallery-popup .cap'), 'show')
      addClass(document.querySelector('.gallery-popup .cap.cap'+elemIndex), 'show')
    },

    onSlideNextStart: function (swiper) {
      var activeIndex = swiper.activeIndex;
      removeClass(document.querySelector('.gallery-popup .cap.cap'+(swiper.slides.length-1)), 'show')
      removeClass(document.querySelector('.gallery-popup .cap.cap'+(activeIndex-1)), 'show')
      addClass(document.querySelector('.gallery-popup .cap.cap'+activeIndex), 'show')
    },

    onSlidePrevStart: function (swiper) {
      var activeIndex = swiper.activeIndex;
      removeClass(document.querySelector('.gallery-popup .cap.cap'+(swiper.slides.length-1)), 'show')
      removeClass(document.querySelector('.gallery-popup .cap.cap'+(activeIndex+1)), 'show')
      addClass(document.querySelector('.gallery-popup .cap.cap'+activeIndex), 'show')
    },

    onImagesReady: function (swiper) {
      swiper.update(true);
      swiper.slideTo(elemIndex, 1);
      addClass(document.querySelector('.gallery-image-load-cover'), 'loaded');
    }
  });

  closeGallery(swiper);
}

function toggleCaption () {
  addEventListenerList(document.querySelectorAll('.swiper-caption-toggle'), 'click', function (ev) {
    ev.preventDefault(ev);

    var swiperCaption = document.querySelector('.swiper-caption');

    if (hasClass(swiperCaption, 'open')) {
      removeClass(swiperCaption, 'open');
    } else {
      addClass(swiperCaption, 'open');
    }
  });
}

// TOGGLE SEARCH ON MOBILE
function toggleSearchMobile () {
  addEventListenerList(document.querySelectorAll('.toggle-mobile-search'), 'click', function (ev) {
    ev.preventDefault(ev);

    if (hasClass(document.querySelector('.sun-header--search'), 'open')) {
      closeSearchMobile();
    } else {
      if(hasClass(document.querySelector('.sun-newsuk'), 'open')) {
        closeNewsuk('open');
        setTimeout(openSearchMobile, 400);
      } else {
        openSearchMobile();
      }
    }
  });
}

function closeSearchMobile () {
  removeClass(document.querySelector('.toggle-mobile-search'), 'open');
  removeClass(document.querySelector('.sun-header--search'), 'open');
  removeClass(document.querySelector('.sun-header--nav'), 'open');
  removeClass(document.querySelector('.sub-nav__mobile-head'), 'moveDown');
  removeClass(document.querySelector('.sub-nav__container'), 'moveDown');
  removeClass(document.querySelector('.main-content-wrap'), 'open');
}

function openSearchMobile () {
  addClass(document.querySelector('.toggle-mobile-search'), 'open');
  addClass(document.querySelector('.sun-header--search'), 'open');
  addClass(document.querySelector('.sun-header--nav'), 'open');
  addClass(document.querySelector('.sub-nav__mobile-head'), 'moveDown');
  addClass(document.querySelector('.sub-nav__container'), 'moveDown');
  addClass(document.querySelector('.main-content-wrap'), 'open');
}

// TOGGLES SECTION SUBNAV
function subnavToggle () {
  addEventListenerList(document.querySelectorAll('.sub-nav__mobile-head'), 'click', function () {
    if (hasClass(document.querySelectorAll('.sub-nav__container')[0], 'open')) {
      removeClass(document.querySelector('html'), 'newsuk-open');
      removeClass(this, 'open')
      removeClass(document.querySelectorAll('.sub-nav__container')[0], 'open')
    } else {
      addClass(document.querySelector('html'), 'newsuk-open');
      addClass(this, 'open')
      addClass(document.querySelectorAll('.sub-nav__container')[0], 'open')
    }
  });
}

function teaserShareCount () {

  var teasers = document.querySelectorAll('.teaser-item .article-data__share');

}

function scrollWindow () {
  window.oldScrollPos = 0;
  window.addEventListener('scroll', function(ev) {
    scrollMobileNav(ev)
    // topTeaserImage(ev)
  });
}

function scrollMobileNav (ev) {
  var nav = document.querySelector('.sun-header--nav');
  var scrollPos = window.pageYOffset | document.body.scrollTop;

  if (scrollPos > 200) {
    addClass(nav, 'fixed');
  } else {
    removeClass(nav, 'fixed');
    removeClass(nav, 'show');
  }

  if (scrollPos > 200 && window.oldScrollPos > scrollPos) {
    addClass(nav, 'show')
  } else {
    removeClass(nav, 'show')
  }

  window.oldScrollPos = scrollPos;
}

function swapActiveSubnav () {
  var subNavHeadText = document.querySelector('.sub-nav__mobile-head-text');
  var subNavItem = document.querySelector('.sub-nav__item.active');

  if (subNavHeadText) {
    subNavHeadText.textContent = subNavItem.querySelector('a').textContent;
    addClass(subNavHeadText, 'show');
  }

}

// Load Facebook SDK
(function(d, s, id) { var js, fjs = d.getElementsByTagName(s)[0]; if (d.getElementById(id)) return; js = d.createElement(s); js.id = id; js.src = "//connect.facebook.net/en_GB/sdk.js#xfbml=1&version=v2.8"; js.onload = function(){ var ev = d.createEvent('Event'); ev.initEvent('fbSDKLoaded', true, true); d.dispatchEvent(ev) }; fjs.parentNode.insertBefore(js, fjs); } (document, 'script', 'facebook-jssdk'));

// See `thesun_setup()` for image sizes
if ( isMobile() ) {

  var offset = 300;

  var thesun_imager_landscape = new Imager( document.querySelectorAll( '.delayed-image-load-mobile' ), {
    availableWidths: {
      300: '300x192'
    },
    lazyload: true,
    lazyloadOffset: offset
  } );

  var thesun_imager_hero = new Imager( document.querySelectorAll( '.delayed-image-load-mobile' ), {
    availableWidths: {
      300: '300x192'
    },
    lazyload: true,
    lazyloadOffset: offset
  } );

  var thesun_imager_portrait = new Imager( document.querySelectorAll( '.delayed-image-load-mobile' ), {
    onResize: false,
    availableWidths: {
      300: '300x192'
    },
    lazyload: true,
    lazyloadOffset: offset
  } );

} else {

  var offset = 500;

  var thesun_imager_landscape = new Imager( document.querySelectorAll( '.delayed-image-load-landscape' ), {
    availableWidths: {
      150: '150x100',
      300: '300x192',
      360: '620x413',
      620: '620x413'
    },
    lazyload: true,
    lazyloadOffset: offset
  } );

  var thesun_imager_hero = new Imager( document.querySelectorAll( '.delayed-image-load-hero' ), {
    availableWidths: {
      300: '300x192', // switches to landscape ratio at this small size
      360: '620x413',
      620: '620x295',
      940: '940x447'
    },
    lazyload: true,
    lazyloadOffset: offset
  } );

  var thesun_imager_portrait = new Imager( document.querySelectorAll( '.delayed-image-load-portrait' ), {
    onResize: true,
    availableWidths: {
      300: '300x450',
      360: '620x413',
      620: '620x413'
    },
    lazyload: true,
    lazyloadOffset: offset
  } );

}

/**
 * Function to split the lines into multiple elements.
 * Ellipsis can be applied to the HTML elements through CSS style but it will work with only single lines.
 * The code will split the contents into two line to make it compatible with CSS style Ellipsis.
 *
 * @param teaserLeadEl The HTML element.
 */
function splitLinesToMultipleElements(teaserLeadEl) {
  var elText        = teaserLeadEl.textContent,
    el            = teaserLeadEl.cloneNode(true),
    parentElement = teaserLeadEl.parentNode,
    wordArray     = elText.split(' '),
    firstText     = [];

  if (elText) {
    elText = elText.trim();
  }

  // Apply additional styles for manipulating.
  el.style.height     = teaserLeadEl.clientHeight / 2 + 'px';
  el.style.width      = teaserLeadEl.clientWidth + 'px';
  el.style.overflow   = 'hidden';
  el.style.visibility = 'hidden';
  el.style.position   = 'absolute';
  el.style.left       = '-9999px';
  el.textContent      = '';

  parentElement.appendChild(el);

  while (!(el.clientHeight < el.scrollHeight)) {
    if (wordArray.length <= 1) {
      break;
    } else {
      firstText.push(wordArray.shift());
      el.textContent = firstText.join(' ');
    }
  }

  if ( firstText.length ) {
    firstText.pop();
    firstText = firstText.join(' ');
    elText    = elText.replace(firstText, '');

    var firstChild = document.createElement('span');
    var lastChild  = document.createElement('span');

    firstChild.className     = 'teaser__lead_first_line';
    lastChild.className      = 'teaser__lead_last_line';
    firstChild.textContent   = firstText;
    lastChild.textContent    = elText;
    teaserLeadEl.textContent = '';

    teaserLeadEl.appendChild(firstChild);
    teaserLeadEl.appendChild(lastChild);
  }
  parentElement.removeChild(el);
}

/**
 * Loops through all the teaser lead elements and apply the Ellipsis.
 */
function teaserLeadEllipsis() {
  var ua = navigator.userAgent.toLowerCase();
  var isSafari = (ua.indexOf('safari') !== -1 && ua.indexOf('chrome') === -1 );
  var teaserLeads = document.getElementsByClassName('teaser__lead');
  if (teaserLeads.length) {
    for (var i = 0; i < teaserLeads.length; i++) {
      if (isSafari) {
        addClass(teaserLeads[i], 'teaser__lead_line_clamp');
      } else {
        splitLinesToMultipleElements(teaserLeads[i]);
      }
    }
  }
}

/**
 * Iframe Resize function.
 * Listens to the child frame and auto resize.
 *
 * @param e
 */
function frameHeight ( e ) {
  var isMobile             = window.matchMedia( '(max-width: 530px)' ).matches;
  var height               = parseInt( e.height );
  var viewPortOffsetHeight = ( height * 70 ) / window.innerWidth;
  viewPortOffsetHeight     = Math.round( viewPortOffsetHeight ) + 20;
  if ( isMobile && window.innerWidth > 530 ){
    isMobile = false;
  }

  if ( !isMobile ){
    viewPortOffsetHeight = 5;
  }

  e.height = height + viewPortOffsetHeight;
}

/**
 * Sun Login link.
 * @returns {string}
 */
function thesun_login_link() {
  let domainPrefixName,
    domainName,
    envi,
    nonProd,
    enviPrefix,
    loginLink = ( thesun_main_settings.loginlink ) ? thesun_main_settings.loginlink : 'https://login.thesun.co.uk';

  if ( 'thesuncom' !== thesun_main_settings.stylesheet ) {
    return loginLink;
  }

  domainPrefixName = 'home';
  domainName       = 'thesun.co.uk';
  envi             = ( thesun_main_settings.envi ) ? thesun_main_settings.envi : '';

  if ( ! readCookie( 'acs_ngn' ) ) {
    domainPrefixName = 'login';
    domainName       = 'the-sun.com';
  }

  nonProd    = [ 'uat', 'staging' ];
  enviPrefix = '';
  if ( nonProd.indexOf( envi ) !== -1 ) {
    enviPrefix = envi + '-';
  }

  return 'https://' + domainPrefixName + '.' + enviPrefix + domainName;
}
;

// Function to get the browser width and return if it's
// mobile, tablet or desktop for analytics
//////////////////////////////////
function getBrowserWidth() {
  if ( isMobile() ) {
    return 'mobile';
  } else if ( isTablet() ) {
    return 'tablet';
  } else {
    return 'desktop';
  }
}

/**
 * Converts undefined values into a string for teamium.
 */
function isUndefined(str) {
  if (str == undefined || typeof str == undefined) str = '';
  if (typeof str == "string") {
    str = str.replace(/\'/g, '');
    str = str.replace(/\"/g, '');
    str = str.replace(/\#/g, '');
    str = str.replace('#8230;','...');
  }

  return str;
}

function isOoyala(e) {
  try {
    return e.className.indexOf('oo-player') >=0 || e.className.indexOf('ooyala-player') >= 0;
  } catch (e) {
    return undefined;
  }
}

/**
 * Overwrites obj1's values with obj2's and adds obj2's if non existent in obj1
 * @param obj1
 * @param obj2
 * @returns obj3 a new object based on obj1 and obj2
 * For joining two object arrays
 */
function mergeArray(obj1,obj2){
  var obj3 = {};
  for (var attrname in obj1) { obj3[attrname] = obj1[attrname]; }
  for (var attrname in obj2) { obj3[attrname] = obj2[attrname]; }
  return obj3;
}

/**
 * Send utag link data to tealium for tracking events
 * Get the array "data" which is the data specific to this event
 * and append it to the default data we pass to the utag object
 * @param data
 */
function gsaSendUtagData(data) {

  // set up array of default values
  /////////////////////////////////////
  var conData = {
    'page_site_name'            : isUndefined( utag_data.page_site_name ),
    'page_site_region'          : isUndefined( utag_data.page_site_region ),
    'page_name'                 : isUndefined( utag_data.page_name ),
    'page_section'              : isUndefined( utag_data.page_section ),
    'page_section_2'            : isUndefined( utag_data.page_section_2 ),
    'page_type'                 : isUndefined( utag_data.page_type ),
    'article_id'                : isUndefined( utag_data.article_id ),
    'article_id_type'           : isUndefined( utag_data.article_id_type ),
    'article_name'              : isUndefined( utag_data.article_name ),
    'article_name_latest'       : isUndefined( utag_data.article_name_latest ),
    'article_publish_timestamp' : isUndefined( utag_data.article_publish_timestamp ),
    'article_publish_latest'    : isUndefined( utag_data.article_publish_latest ),
    'article_author'            : isUndefined( utag_data.article_author ),
    'article_kicker_name'       : isUndefined( utag_data.article_kicker_name ),
    'article_tag_name'          : isUndefined( utag_data.article_tag_name ),
    'page_number'               : isUndefined( utag_data.page_number ),
    'template_name'             : isUndefined( utag_data.template_name ),
    'page_restrictions'         : isUndefined( utag_data.page_restrictions ),
    'page_tags'                 : isUndefined( utag_data.page_tags )
  };

  // merge the two arrays
  var finalData = mergeArray(data,conData);

  utag.link(finalData); // send data to tealium

}

/***************************
 START VIDEO STATS TRACKING
 NEW DATA
 ***************************/

//
// function to convert video duration time from the default (seconds).
// It serves two functions.
//
// duration :: the duration in seconds.
// outputTime :: true/false.
// if true :: output the value as HH:MM:SS
// if false :: output the value as a percentage of the total time
// in to hours, minutes and seconds
// for tracking. The desired result is: HH:MM:SS
function getVideoDuration(time, outputTime, totalDuration) {
  if (outputTime == true) {
    var hrs = ~~(time / 3600);
    var mins = ~~((time % 3600) / 60);
    var secs = Math.round(time % 60);

    hrs += "";
    mins += "";
    secs += "";

    if (hrs.length == 1) hrs = "0" + hrs;
    if (mins.length == 1) mins = "0" + mins;
    if (secs.length == 1) secs = "0" + secs;

    return hrs + ":" + mins + ":" + secs;
  } else {
    var percentageTime = time / totalDuration * 100;
    percentageTime = Math.round(percentageTime);

    // no reutn pre specified range based on exact percentage:
    if (percentageTime <= 25) return "0-25";
    else if (percentageTime <= 50) return "26-50"
    else if (percentageTime <= 75) return "51-75"
    else return "76-100"
  }
}

// set milestone markers to false so they can later be set true
// to stop them fireing more than once
var milestoneSet = [];
function gsa_reset_milestone_flags() {
  milestoneSet["25"] = false;
  milestoneSet["50"] = false;
  milestoneSet["75"] = false;
}

// START:
// VIDEO STATS

// START:
// VIDEO PLAY AND CHANGE STATE

gsa_reset_milestone_flags(); // set the flags to false until we call on them

var gsa_start_play = false;

/**
 * Bind events for videos in the page.
 *
 * @param videoElementId Video element id in the DOM.
 * @param videoId Video id in the backlot.
 */
function bindVideoEvents(videoElementId, videoId) {
  // firstly get all the videos that have loaded on the page
  var videoObject = document.getElementById(videoElementId);
  if (gsaVideos = videoObject.querySelectorAll(".video")) {
    for (i=0; i < gsaVideos.length;i++ ) {
      // get the video's data to pass to utag
      var mediaTitle, mediaCategory, mediaPubTime;
      var mediaID = videoId; // get the video's content ID

      // now get the videos details which is in a class with attribute of the same data-content-id as above
      if (gsaVideoDetails = document.getElementById('sun-video-details-' + videoId)) {
        if (gsaVideoDetails.getAttribute("data-content-id") == mediaID) { // ignore if the content is different - for multiple players on one page
          mediaTitle = gsaVideoDetails.getAttribute("data-content-title") + ": " + gsaVideoDetails.getAttribute("data-content-details");
          mediaCategory = gsaVideoDetails.getAttribute("data-video-section");
          mediaPubTime = gsaVideoDetails.getAttribute("data-video-published");
        }
      }

      gsaVideos[i].addEventListener('loadedmetadata', function() { // if playing for the first time
        gsa_start_play = true;

        var utagArray = {
          'event_media_action':'media play',
          'media_player':'ooyala',
          'media_id':isUndefined(mediaID),
          'media_name':isUndefined(mediaTitle),
          'media_category':isUndefined(mediaCategory),
          'media_publish_timestamp':isUndefined(mediaPubTime),
          'media_type':'video',
          'media_duration':getVideoDuration(this.duration, true),
          'media_segment':getVideoDuration(this.currentTime, false, this.duration),
          'media_offset':getVideoDuration(this.currentTime, true),
        };
        gsaSendUtagData(utagArray); // send data to tealium

      });

      // if press play
      gsaVideos[i].onplay = function() {
        // make sure milestone flags are reset
        gsa_reset_milestone_flags();

        if (gsa_start_play == true || this.readyState == 4) { // if users pauses then plays again
          var utagArray = {
            'event_media_action':'media play',
            'media_player':'ooyala',
            'media_id':isUndefined(mediaID),
            'media_name':isUndefined(mediaTitle),
            'media_category':isUndefined(mediaCategory),
            'media_publish_timestamp':isUndefined(mediaPubTime),
            'media_type':'video',
            'media_duration':getVideoDuration(this.duration, true),
            'media_segment':getVideoDuration(this.currentTime, false, this.duration),
            'media_offset':getVideoDuration(this.currentTime, true),
          };
          gsaSendUtagData(utagArray); // send data to tealium
        }
      };

      // if 100% complete
      gsaVideos[i].onended = function() {
        // reset milestones for next video
        gsa_reset_milestone_flags();

        var utagArray = {
          'event_media_action':'media complete',
          'media_player':'ooyala',
          'media_id':isUndefined(mediaID),
          'media_name':isUndefined(mediaTitle),
          'media_category':isUndefined(mediaCategory),
          'media_publish_timestamp':isUndefined(mediaPubTime),
          'media_type':'video',
          'media_duration':getVideoDuration(this.duration, true),
          'media_milestone':"100",
          'media_segment':"76-100",
          'media_offset':getVideoDuration(this.duration, true),
        };
        gsaSendUtagData(utagArray); // send data to tealium

      };

      // log if 25%, 50% and 75% complete
      gsaVideos[i].ontimeupdate = function() {
        // check time as a percentage
        var percentageTime = this.currentTime / this.duration * 100;
        percentageTime = Math.round(percentageTime);

        var milestone, segment;

        if (percentageTime == 25) {
          milestone = "25";
          segment = "0-25";
        } else if (percentageTime == 50) {
          milestone = "50";
          segment = "26-50";
        } else if (percentageTime == 75) {
          milestone = "75";
          segment = "51-75";
        }

        if (milestone && milestoneSet[milestone] == false) {
          milestoneSet[milestone] = true; // make sure we only fire this once per milestone
          setTimeout( gsa_reset_milestone_flags() , 1000); // reset all the milestone flags after 1 second.


          var utagArray = {
            'event_media_action':'media milestone',
            'media_player':'ooyala',
            'media_id':isUndefined(mediaID),
            'media_name':isUndefined(mediaTitle),
            'media_category':isUndefined(mediaCategory),
            'media_publish_timestamp':isUndefined(mediaPubTime),
            'media_type':'video',
            'media_duration':getVideoDuration(this.duration, true),
            'media_milestone':milestone,
            'media_segment':segment,
            'media_offset':getVideoDuration(this.currentTime, true),
          };
          gsaSendUtagData(utagArray); // send data to tealium
        }

      };

    }
  }

  // END:
  // VIDEO PLAY AND CHANGE STATE

}

document.addEventListener('DOMContentLoaded', function () {

  // START:
  // LOGO CLICK
  document.getElementById("logo").onclick = function () {

    var utagArray = {
      'event_navigation_action': 'navigation',
      'event_navigation_name': 'the sun logo',
      'event_navigation_browsing_method':'click'
    };
    gsaSendUtagData(utagArray); // send data to tealium

  };
  // END:
  // LOGO CLICK

  // START:
  // CHANGE EDITION SELECTION
  if (gsaEdition = document.querySelectorAll(".edition a")) {
    for(i = 0; i < gsaEdition.length; i++) {
      gsaEdition[i].addEventListener('click', function(){

        var gsaEditionName = this.innerHTML.trim();

        var utagArray = {
          'event_navigation_action':'navigation',
          'event_navigation_name':'sun edition:selection',
          'event_navigation_browsing_method':'click',
          'article_parent_name':'sun edition:' + gsaEditionName,
        };
        gsaSendUtagData(utagArray); // send data to tealium

      }, false);
    }
  }

  // END:
  // CHANGE EDITION SELECTION


  // START:
  // CLICK SEARCH BOX
  if (gsaSearch = document.querySelector(".search-bar a")) {

    gsaSearch.addEventListener('click', function(){

      var utagArray = {
        'event_engagement_action':'engagement',
        'event_engagement_name':'site search:expose',
        'event_engagement_browsing_method':'click',
      };
      gsaSendUtagData(utagArray); // send data to tealium

    }, false);

  }
  // END:
  // CLICK SEARCH BOX


  // START:
  // CLICK SEARCH BUTTON
  if (gsaSearch = document.querySelector(".search-bar")) {
    gsaSearch = gsaSearch.getElementsByTagName("input");
    for(i = 0; i < gsaSearch.length; i++) {
      if (gsaSearch[i].type == "submit") {

        gsaSearch[i].addEventListener('click', function(){

          // get the input value
          var gsaSearchValue = document.querySelector(".search-bar input").value;

          var utagArray = {
            'event_navigation_action':'navigation',
            'event_navigation_name':'site search:confirm',
            'event_navigation_browsing_method':'click',
            'internal_search_term':gsaSearchValue,
            'internal_search_type':'site search:free text'
          };
          gsaSendUtagData(utagArray); // send data to tealium

        }, false);
      }
    }
  }
  // END:
  // CLICK SEARCH BUTTON


  // START:
  // CLICK ON NAVIGATION WITHIN THE MAIN MENU
  if (gsaTopNav = document.querySelectorAll("#sun-menu li a")) {
    for (j = 0;j < gsaTopNav.length; j++) {
      gsaTopNav[j].addEventListener('click', function(){

        var utagArray = {
          'event_navigation_action':'navigation',
          'event_navigation_name':'section:selection',
          'event_navigation_browsing_method':'click',
          'article_parent_name':'section:'+this.textContent.trim()
        };
        gsaSendUtagData(utagArray); // send data to tealium

      }, false);

    }
  }
  // END:
  // CLICK ON NAVIGATION WITHIN  THE MAIN MENU


  // START:
  // CLICK ON SUB NAVIGATION
  if ( gsaSubNav = document.querySelectorAll(".sub-nav__list a") ) {
    for (i = 0;i < gsaSubNav.length; i++) {
      gsaSubNav[i].addEventListener('click', function(){

        var utagArray = {
          'event_navigation_action':'navigation',
          'event_navigation_name':'subsection:selection',
          'event_navigation_browsing_method':'click',
          'article_parent_name':'subsection:' + isUndefined(utag_data.page_section) + ':'+this.textContent.trim()
        };
        gsaSendUtagData(utagArray); // send data to tealium

      }, false);

    }

  }
  // END:
  // CLICK ON SUB NAVIGATION


  // START:
  // CLICK ON A TAG FROM A TOPIC PAGE
  if ( gsaTagName = document.querySelectorAll(".tags--topic a") ) {
    for (i = 0;i < gsaTagName.length; i++) {
      gsaTagName[i].addEventListener('click', function(){

        var utagArray = {
          'event_navigation_action':'navigation',
          'event_navigation_name':'tag:selection',
          'event_navigation_browsing_method':'click',
          'article_parent_name':'tag:' + this.textContent.trim()
        };
        gsaSendUtagData(utagArray); // send data to tealium

      }, false);
    }
  }
  // END:
  // CLICK ON A TAG FROM A TOPIC PAGE


  // START:
  // CLICK ON A TAG FROM AN ARTICLE PAGE
  if ( gsaTagName = document.querySelectorAll(".tags--article a") ) {
    for (i = 0;i < gsaTagName.length; i++) {
      gsaTagName[i].addEventListener('click', function(){

        var utagArray = {
          'event_navigation_action':'navigation',
          'event_navigation_name':'topic:selection',
          'event_navigation_browsing_method':'click',
          'article_parent_name':'topic:' + this.textContent.trim()
        };
        gsaSendUtagData(utagArray); // send data to tealium

      }, false);
    }
  }
  // END:
  // CLICK ON A TAG FROM AN ARTICLE PAGE

  // START:
  // CLICK ON ANY TEASER
  // THIS HAS BEEN MODIFIED FROM THE OLD CODE
  // Adding a condition to check that it is not a single-post page,
  //   as we are having a separate tracking implementation for single-post page.
  if ( null === document.querySelector( '.single.single-post' ) ) {
    if ( gsaTeasers = document.querySelectorAll(".teaser-item a") ) {
      for (i=0; i < gsaTeasers.length; i++) {
        gsaTeasers[i].addEventListener('click', function(){

          var wName = "article"; // normal teaser
          if (this.parentNode.parentNode.className.indexOf("teaser__extra-large") > 0) {
            // hero teaser
            wName = "hero";
          }

          var teaserKicker = "";
          if (this.parentNode.parentNode.querySelector(".teaser__headline")) {
            teaserKicker = this.parentNode.parentNode.querySelector(".teaser__headline").textContent.trim();
          }

          var teaserTag = "";
          if (this.parentNode.parentNode.querySelector(".teaser-slug__copy")) {
            teaserTag = this.parentNode.parentNode.querySelector(".teaser-slug__copy").textContent.trim();
          }

          var teaserHeadline = this.parentNode.parentNode.querySelector(".teaser__subdeck").textContent.trim();

          var teaserSection = this.parentNode.parentNode.querySelector(".article-data__tag a").textContent.trim();


          var utagArray = {
            'event_navigation_action':'navigation',
            'event_navigation_name':'widget:'+wName,
            'event_navigation_browsing_method':'click',
            'widget_kicker':teaserKicker,
            'widget_tag':teaserTag,
            'widget_headline':teaserHeadline,
            'widget_section':teaserSection,
            'widget_type':'widget:'+wName
          };
          gsaSendUtagData(utagArray); // send data to tealium


        }, false);
      }
    }
  }
  // END:
  // CLICK ON ANY TEASER


  // START:
  // Click on Rail interaction
  // Adding a condition to check that it is not a single-post page,
  //   as we are having a separate tracking implementation for single-post page.
  if ( null === document.querySelector( '.single.single-post' ) ) {
    if ( gsaRail = document.querySelectorAll(".rail") ) {
      for (i=0; i < gsaRail.length; i++ ) {
        var gsaRailContainer = gsaRail[i].querySelector('.swiper-container');
        var gsaRailSwiper = gsaRailContainer.swiper;

        // Add Swiper js callback Event for Navigation event. On bullet button click and nav next-previous button click event.
        gsaRailSwiper.on('onSlideChangeEnd', function ( gsaRailSwiper ) {
          var currentPage, totalPage, gsaRailSwiperContainer, utagArray,
            gsaRailTitle = '';
          gsaRailSwiperContainer = gsaRailSwiper.container[0];
          if ( gsaRailSwiperContainer.querySelector( '.rail__title' ) ) {
            gsaRailTitle = gsaRailSwiperContainer.querySelector( '.rail__title' ).textContent.trim();
          }
          currentPage = gsaRailSwiper.snapIndex + 1; // Index start from 0.
          totalPage = gsaRailSwiper.snapGrid.length;

          utagArray = {
            'event_engagement_action':'engagement',
            'event_engagement_name':'rail:show segment',
            'event_engagement_browsing_method':'click',
            'article_parent_name':'rail:' + gsaRailTitle,
            'widget_segment':'segment:' + currentPage + ' of ' + totalPage,
          };
          gsaSendUtagData( utagArray ); // Send data to tealium.
        });

        // START:
        // Click a teaser within a rail
        // Adding a condition to check that it is not a single-post page,
        //   as we are having a separate tracking implementation for single-post page.
        var gsaTeasers = gsaRailContainer.querySelectorAll( '.rail__item' );

        for ( var j = 0; j < gsaTeasers.length; j++ ) {

          // get rail items's kicker text and headline text
          if ( gsaTeasers[j].parentNode.parentNode.querySelector(".rail__title") ) {
            gsaTeasers[j].gsaParentTitle = gsaTeasers[j].parentNode.parentNode.querySelector(".rail__title").textContent.trim();
          }
          if ( gsaTeasers[j].querySelector(".rail__item-headline") ) {
            gsaTeasers[j].gsaTeaserKickerText = gsaTeasers[j].querySelector(".rail__item-headline").textContent.trim();
          }
          if ( gsaTeasers[j].querySelector(".rail__item-sub") ) {
            gsaTeasers[j].gsaTeaserTitleText = gsaTeasers[j].querySelector(".rail__item-sub").textContent.trim();
          }

          gsaTeasers[j].addEventListener( 'click', function(){

            var utagArray = {
              'event_navigation_action':'navigation',
              'event_navigation_name':'rail:selection:article',
              'event_navigation_browsing_method':'click',
              'article_parent_name':'rail:' + this.gsaParentTitle,
              'widget_kicker':this.gsaTeaserKickerText,
              'widget_tag':'', // This isn't coming through yet so can't be passed.
              'widget_headline':this.gsaTeaserTitleText,
              'widget_section':this.gsaParentTitle,
              'widget_segment':'', // segment:x of t
              'widget_type':'rail:' + this.gsaParentTitle
            };
            gsaSendUtagData(utagArray); // send data to tealium

          }, false );
        }
        // END:
        // Click a teaser within a rail
      }
    }
  }
  // END:
  // Click on Rail interaction

  // START:
  // Jetpack sharing button click
  if ( gsaSharing = document.querySelectorAll(".sd-button") ) {
    for (var i=0; i < gsaSharing.length; i++ ) {

      gsaSharing[i].addEventListener('click', function(e){
        // detect if we are on a video page or not
        var gsaPageType;
        var isVideoPage = document.getElementsByClassName('social--video');
        if (isVideoPage.length > 0) {
          gsaPageType = "video";
        } else {
          gsaPageType = "article";
        }

        // sharing buttons have the first class as 'share-[network]'.
        var network = e.target.classList.item(0).substr(6,e.target.classList.item(0).length);
        if ( 'share-jetpack-whatsapp' === e.target.classList.item(0)) {
          // whatsapp has inconsistent naming convention.
          network = e.target.classList.item(0).substr(14,e.target.classList.item(0).length);
        }
        var utagArray = {
          'event_navigation_action':'navigation',
          'event_navigation_name':gsaPageType + ':social share:' + network,
          'event_navigation_browsing_method':'click',
          'event_social_action':'share start',
          'social_platform': network,
        };
        gsaSendUtagData(utagArray);
      }, false);
    }
  }
  // END:
  // Jetpack sharing button click

  // START:
  // Click footer sharing buttons
  if ( gsaSharingFooter = document.querySelectorAll("footer .follow-sun a") ) {
    for (i=0; i < gsaSharingFooter.length; i++ ) {

      gsaSharingFooter[i].addEventListener('click', function(){

        var gsaSharingName = this.getAttribute("class").replace('follow-','');

        var utagArray = {
          'event_navigation_action': 'navigation',
          'event_navigation_name':"footer:social share:" + gsaSharingName,
          'event_navigation_browsing_method':'click',
          'event_social_action':'share start',
          'social_platform':gsaSharingName
        };
        gsaSendUtagData(utagArray);
      }, false);
    }
  }
  // END:
  // Click footer sharing buttons

  // START:
  // VIDEO FULL SCREEN CHANGE
  function fullscreenHandler (e) {
    var state = document.fullScreen || document.mozFullScreen || document.webkitIsFullScreen;
    var event = state ? 'fullscreen' : 'fullscreen closed';

    var targetElement = e.target;
    if ( !isOoyala(targetElement) ) {
      return;
    }

    var parentElement = e.target.parentNode;
    var mediaID = parentElement.getAttribute("data-content-id");
    var videoID = parentElement.querySelector("video");

    // If no video is found (e.g. coming from an AD in an iFrame), then we don't want to interfere.
    if (!videoID)
      return;

    // LOOP THROUGH ALL sun-video-details CLASS'S AND GET THE ONE THAT MATCHES THIS CURRENT data-content-id with mediaID
    var mediaTitle, mediaCategory, mediaPubTime;

    // now get the videos details which is in a class with attribute of the same data-content-id as above
    if (gsaVideoDetails = document.getElementById('sun-video-details-' + mediaID)) {
      if (gsaVideoDetails.getAttribute("data-content-id") == mediaID) { // ignore if the content is different - for multiple players on one page
        mediaTitle = gsaVideoDetails.getAttribute("data-content-title") + ": " + gsaVideoDetails.getAttribute("data-content-details");
        mediaCategory = gsaVideoDetails.getAttribute("data-video-section");
        mediaPubTime = gsaVideoDetails.getAttribute("data-video-published");
      }
    }

    var utagArray = {
      'event_media_action':'media ' + event,
      'media_player':'ooyala',
      'media_id':isUndefined(mediaID),
      'media_name':isUndefined(mediaTitle),
      'media_category':isUndefined(mediaCategory),
      'media_publish_timestamp':isUndefined(mediaPubTime),
      'media_type':'video',
      'media_duration':getVideoDuration(videoID.duration, true),
      'media_segment':getVideoDuration(videoID.currentTime, false, videoID.duration),
      'media_offset':getVideoDuration(videoID.currentTime, true)
    };
    gsaSendUtagData(utagArray); // send data to tealium


  }

  document.addEventListener('fullscreenchange',       fullscreenHandler, false);
  document.addEventListener("webkitfullscreenchange", fullscreenHandler, false);
  document.addEventListener("mozfullscreenchange",    fullscreenHandler, false);

  // END:
  // VIDEO FULL SCREEN CHANGE

  // END:
  // VIDEO STATS

  // START:
  // CLICKING ON ARTICLE FROM SIDE RAIL
  var gsaSideRail = document.querySelectorAll( '.sidebar__section .teaser-item' );
  if ( gsaSideRail.length > 0 ) {
    for ( var i = 0; i < gsaSideRail.length; i++ ) {
      gsaSideRail[i].addEventListener( 'click', gsa_side_rail );
    }
  }

  // Implementing the GSA analytics for Side Rail.
  function gsa_side_rail() {
    var kicker       = '',
      slug         = '',
      headline     = '',
      section      = '',
      gsaRailTitle = 'no title',
      utagArray,
      position,
      gsaSideRail;
    if ( this.parentNode.querySelector( '.sidebar__title' ) ) {
      gsaRailTitle = this.parentNode.querySelector( '.sidebar__title' ).textContent.trim();
    }

    if ( this.querySelector( '.teaser__headline' ) ) {
      kicker = this.querySelector( '.teaser__headline' ).textContent.trim();
    }

    if ( this.querySelector( '.teaser-slug__copy' ) ) {
      slug = this.querySelector( '.teaser-slug__copy' ).textContent.trim();
    }

    if ( this.querySelector( '.teaser__subdeck' ) ) {
      headline = this.querySelector( '.teaser__subdeck' ).textContent.trim();
    }

    if ( this.querySelector( '.article-data__tag a' ) ) {
      section = this.querySelector( '.article-data__tag a' ).textContent.trim();
    }

    gsaSideRail = document.querySelectorAll( '.sidebar__section .teaser-item' );
    for ( var i = 0; i < gsaSideRail.length; i++ ) {
      if ( this == gsaSideRail[ i ] ) {
        position = i + 1;
        break;
      }
    }
    utagArray = {
      'event_navigation_action': 'navigation',
      'event_navigation_name': 'side rail:selection:article',
      'event_navigation_browsing_method': 'click',
      'article_parent_name': 'side rail:' + gsaRailTitle,
      'widget_kicker': kicker,
      'widget_tag': slug,
      'widget_headline': headline,
      'widget_section': section,
      'widget_type': 'side rail:' + gsaRailTitle,
      'widget_segment': 'position:' + position
    };
    gsaSendUtagData( utagArray ); // Send data to tealium.
  }
  // END:
  // CLICKING ON ARTICLE FROM SIDE RAIL

  // START:
  // CLICKING ON IN-BODY RAIL
  var gsaInBodyRail = document.querySelectorAll( '.article__content .rail' );
  if ( gsaInBodyRail.length > 0 ) {
    for ( i = 0; i < gsaInBodyRail.length; i++ ) {
      var swiperContainer = gsaInBodyRail[i].querySelector('.swiper-container');
      var swiper = swiperContainer.swiper;
      // Add Swiper js callback Event for Navigation event. On bullet button click and nav next-previous button click event.
      swiper.on('onSlideChangeEnd', function (swiper) {
        var currentPage, totalPage, swiperContainer, utagArray,
          gsaRailTitle = '';
        swiperContainer = swiper.container[0];
        if ( swiperContainer.querySelector( '.rail__title' ) ) {
          gsaRailTitle = swiperContainer.querySelector( '.rail__title' ).textContent.trim();
        }
        currentPage = swiper.snapIndex + 1; // Index start from 0.
        totalPage = swiper.snapGrid.length;

        utagArray = {
          'event_engagement_action': 'engagement',
          'event_engagement_name': 'in body-rail:show segment',
          'event_engagement_browsing_method': 'click',
          'article_parent_name': 'in-body rail:' + gsaRailTitle,
          'widget_segment': 'segment:' + currentPage + ' of ' + totalPage,
          'widget_type': 'in-body rail:' + gsaRailTitle
        };
        gsaSendUtagData( utagArray ); // Send data to tealium.
      });
      // Implementing analytics for rail item click.
      var gsaInBodyRailItem = swiperContainer.querySelectorAll( '.rail__item' );

      for ( var j = 0; j < gsaInBodyRailItem.length; j++ ) {
        gsaInBodyRailItem[ j ].addEventListener( 'click', gsa_rail_item );
      }
    }
  }

  // Implementing the GSA analytics for In-Body rail item click.
  function gsa_rail_item() {
    var kicker       = '',
      headline     = '',
      gsaRailTitle = '',
      utagArray,
      position,
      gsaRailItem;
    if ( this.parentNode.parentNode.querySelector( '.rail__title' ) ) {
      gsaRailTitle = this.parentNode.parentNode.querySelector( '.rail__title' ).textContent.trim();
    }
    if ( this.querySelector( '.rail__item-headline' ) ) {
      kicker = this.querySelector( '.rail__item-headline' ).textContent.trim();
    }
    if ( this.querySelector( '.rail__item-sub' ) ) {
      headline = this.querySelector( '.rail__item-sub' ).textContent.trim();
    }

    gsaRailItem = this.parentNode.querySelectorAll( '.rail__item' );
    for ( var i = 0; i < gsaRailItem.length; i++ ) {
      if ( this == gsaRailItem[ i ] ) {
        position = i + 1;
        break;
      }
    }

    utagArray = {
      'event_navigation_action': 'navigation',
      'event_navigation_name': 'in-body rail:selection:article',
      'event_navigation_browsing_method': 'click',
      'article_parent_name': 'in-body rail:' + gsaRailTitle,
      'widget_kicker': kicker,
      'widget_tag': "",
      'widget_headline': headline,
      'widget_section': "",
      'widget_type': 'in-body rail:' + gsaRailTitle,
      'widget_segment': 'position:' + position
    };
    gsaSendUtagData( utagArray ); // Send data to tealium.
  }

  // Implementing the GSA analytics for In-Body rail view change.
  function gsa_rail_navigation() {
    var x, y, parent, utagArray,
      gsaRailTitle = '';
    parent = this.parentNode;
    if ( this.parentNode.parentNode.querySelector( '.rail__title' ) ) {
      gsaRailTitle = this.parentNode.parentNode.querySelector( '.rail__title' ).textContent.trim();
    }
    if ( parent.getElementsByClassName( 'swiper-pagination-current' ).length ) {
      x = parent.getElementsByClassName( 'swiper-pagination-current' )[0].textContent.trim();
      y = parent.getElementsByClassName( 'swiper-pagination-total' )[0].textContent.trim();
    } else if ( x = parent.getElementsByClassName( 'swiper-pagination-bullet' ) ) {
      y = x.length;
      for ( var z = 0; z < x.length; z++ ) {
        if ( x[ z ].className.split(' ').indexOf( 'swiper-pagination-bullet-active' ) > -1 ) {
          x = z + 1;
          break;
        }
      }
    }
    utagArray = {
      'event_engagement_action': 'engagement',
      'event_engagement_name': 'in body-rail:show segment',
      'event_engagement_browsing_method': 'click',
      'article_parent_name': 'in-body rail:' + gsaRailTitle,
      'widget_segment': 'segment:' + x + ' of ' + y,
      'widget_type': 'in-body rail:' + gsaRailTitle
    };
    gsaSendUtagData( utagArray ); // Send data to tealium.
  }
  // END:
  // CLICKING ON IN-BODY RAIL

  // START:
  // CLICKING ON RAIL TITLE
  var gsaRailWidgetTitle = document.getElementsByClassName( 'rail__header--anchor' );
  if ( gsaRailWidgetTitle.length ) {
    for ( i = 0; i < gsaRailWidgetTitle.length; i++ ) {
      gsaRailWidgetTitle[ i ].addEventListener( 'click', function() {
        var title = this.parentNode.getElementsByClassName('rail__title')[0].textContent.trim();
        var utagArray = {
          'event_navigation_action': 'navigation',
          'event_navigation_name': 'rail:selection:title',
          'event_navigation_browsing_method': 'click',
          'article_parent_name': 'rail:' + title,
          'widget_type': 'rail:' + title
        };
        gsaSendUtagData( utagArray ); // Send data to tealium.
      });
    }
  }
  // END:
  // CLICKING ON RAIL TITLE
});
;