jQuery(document).ready(function($){

    var body = $('body');
    var main = $('#main');
    var siteHeader = $('#site-header');
    var titleContainer = $('#title-container');
    var toggleNavigation = $('#toggle-navigation');
    var menuPrimaryContainer = $('#menu-primary-container');
    var menuPrimary = $('#menu-primary');
    var menuPrimaryItems = $('#menu-primary-items');
    var toggleDropdown = $('.toggle-dropdown');
    var toggleSidebar = $('#toggle-sidebar');
    var sidebarPrimary = $('#sidebar-primary');
    var sidebarPrimaryContent = $('#sidebar-primary-content');
    var sidebarWidgets = $('#sidebar-primary-widgets');
    var socialMediaIcons = siteHeader.find('.social-media-icons');
    var menuLink = $('.menu-item').children('a');

    // add fitvids to all vids in posts/pages
    $('.post').fitVids({
        customSelector: 'iframe[src*="dailymotion.com"], iframe[src*="slideshare.net"], iframe[src*="animoto.com"], iframe[src*="blip.tv"], iframe[src*="funnyordie.com"], iframe[src*="hulu.com"], iframe[src*="ted.com"], iframe[src*="wordpress.tv"]'
    });

    // Jetpack infinite scroll event that reloads posts.
    $( document.body ).on( 'post-load', function () {
        objectFitAdjustment();
    } );

    // centers 2nd tier menus with their parent menu items
    centerDropdownMenus();

    // put menu into new line if touching social icons
    socialIconAdjustment();

    // make links and inputs inaccessible to keyboards unless sidebar is open
    sidebarKeyboardNav();

    // fakes object-fit support
    objectFitAdjustment();

    $(window).on( 'resize', function(){
        centerDropdownMenus();
        socialIconAdjustment();
        sidebarHeightResize();
        objectFitAdjustment();
    });

    toggleNavigation.on('click', openPrimaryMenu);

    function openPrimaryMenu() {

        if( menuPrimaryContainer.hasClass('open') ) {
            menuPrimaryContainer.removeClass('open');
            $(this).removeClass('open');

            // change screen reader text
            $(this).children('span').text(ct_founder_objectL10n.openMenu);

            // change aria expanded
            $(this).attr('aria-expanded', 'false');

        } else {
            menuPrimaryContainer.addClass('open');
            $(this).addClass('open');

            // change screen reader text
            $(this).children('span').text(ct_founder_objectL10n.closeMenu);

            // change aria expanded
            $(this).attr('aria-expanded', 'true');
        }
    }

    // display the dropdown menus
    toggleDropdown.on('click', openDropdownMenu);

    function openDropdownMenu() {

        // get the buttons parent (li)
        var menuItem = $(this).parent();

        // if already opened
        if( menuItem.hasClass('open') ) {

            // remove open class
            menuItem.removeClass('open');

            // change screen reader text
            $(this).children('span').text(ct_founder_objectL10n.openMenu);

            // change aria text
            $(this).attr('aria-expanded', 'false');
        } else {

            // add class to open the menu
            menuItem.addClass('open');

            // change screen reader text
            $(this).children('span').text(ct_founder_objectL10n.closeMenu);

            // change aria text
            $(this).attr('aria-expanded', 'true');
        }
    }

    // display the sidebar
    toggleSidebar.on('click', openSidebar);

    function openSidebar() {

        if( sidebarPrimary.hasClass('open') ) {
            sidebarPrimary.removeClass('open');

            // if viewport is lower than top of sidebar, scroll up that distance
            var viewportTop = $(window).scrollTop();
            var sidebarTop = sidebarPrimary.offset().top;

            // if visitor has scrolled down so top of sidebar is out of view
            if( viewportTop > sidebarTop  ) {
                var distance = sidebarTop - 24;
                if( window.innerWidth > 899 ) {
                    $('html, body').animate({scrollTop: distance}, 200);
                } else {
                    $('html, body').scrollTop(distance);
                }

            }

            // change screen reader text
            $(this).children('span').text(ct_founder_objectL10n.openSidebar);

            // change aria expanded
            $(this).attr('aria-expanded', 'false');

            if( window.innerWidth > 899 ) {
                sidebarPrimaryContent.css('max-height', '' );
            }

            // remove access to links/inputs in sidebar
            sidebarKeyboardNav();

        } else {
            sidebarPrimary.addClass('open');
            
            // change screen reader text
            $(this).children('span').text(ct_founder_objectL10n.closeSidebar);

            // change aria expanded
            $(this).attr('aria-expanded', 'true');

            if( window.innerWidth > 899 ) {
                sidebarPrimaryContent.css('max-height', sidebarWidgets.outerHeight() );
            }

            // provide access to links/inputs in sidebar
            sidebarKeyboardNav();
        }
    }

    // open search bar
    body.on('click', '#search-icon', openSearchBar);

    function openSearchBar(){

        // get the social icons
        var socialIcons = siteHeader.find('.social-media-icons');

        // toggle aria-pressed state
        // Ref: https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Roles/button_role#JavaScript_2
        var pressed = $(this).attr("aria-pressed") === true;
        $(this).attr("aria-pressed", !pressed);

        // if search bar already open
        if( $(this).hasClass('open') ) {

            // remove styling class
            $(this).removeClass('open');

            // remove styling class
            if( socialIcons.hasClass('fade') ) {
                socialIcons.removeClass('fade');
            }

            // make search input inaccessible to keyboards
            siteHeader.find('.search-field').attr('tabindex', -1);

            // handle mobile width search bar sizing
            if( window.innerWidth < 900 ) {
                siteHeader.find('.search-form').attr('style', '');
            }

        } else {

            // add styling class
            $(this).addClass('open');

            socialIcons.addClass('fade');

            // make search input keyboard accessible
            siteHeader.find('.search-field').attr('tabindex', 0);

            // handle mobile width search bar sizing
            if( window.innerWidth < 900 ) {

                // distance to other side (35px is width of icon space)
                var leftDistance = window.innerWidth * 0.83332 - 24;

                siteHeader.find('.search-form').css('left', -leftDistance + 'px')
            }
        }
    }

    // if screen is resized while sidebar is open, update max-height to keep widgets
    // from being cut-off. Only necessary b/c of animation (can't do max-height: none;)
    function sidebarHeightResize() {

        if( sidebarPrimary.hasClass('open') && window.innerWidth > 899 ) {
            sidebarPrimaryContent.css('max-height', sidebarWidgets.outerHeight() );
        } else {
            sidebarPrimaryContent.css('max-height', '');
        }
    }

    // centers 2nd tier menus with their parent menu items
    function centerDropdownMenus() {

        if( window.innerWidth > 899 ) {

            var parentMenuItemsTier2 = menuPrimaryItems.children('.menu-item-has-children');

            parentMenuItemsTier2.each(function(){
                var parentWidth = $(this).width();
                var childWidth = $(this).children('ul').outerWidth();
                if( childWidth > parentWidth ) {
                    var difference = childWidth - parentWidth;
                    difference = difference / 2;
                    if( body.hasClass('rtl') ) {
                        $(this).children('ul').css('right', -difference);
                    } else {
                        $(this).children('ul').css('left', -difference);
                    }
                }
            });

            var parentMenuItemsTier3 = menuPrimaryItems.find('ul ul');

            parentMenuItemsTier3.each(function(){
                var height = $(this).outerHeight();
                height = height / 2;
                var parentLink = $(this).parent().children('a');
                var parentLinkHeight = parentLink.height();
                parentLinkHeight = parentLinkHeight / 2;
                // added one px b/c always off by a bit
                $(this).css('top', -height + parentLinkHeight + 1);
            });
        } else {
            if( body.hasClass('rtl') ) {
                menuPrimaryItems.find('ul').css({
                    'right': '',
                    'top' : ''
                });
            } else {
                menuPrimaryItems.find('ul').css({
                    'left': '',
                    'top' : ''
                });
            }
        }
    }

    // if menu doesn't fit next to social icons, move to next line
    function socialIconAdjustment(){

        // if at non-mobile menu width and social icons exist
        if( window.innerWidth > 899 && socialMediaIcons.length > 0 ) {

            // get the width of all the header elements
            var space = siteHeader.width();
            var titleWidth = titleContainer.width() + parseInt(titleContainer.css('margin-right'));
            var menuWidth = menuPrimary.width();
            var iconsWidth = socialMediaIcons.width();

            // is there enough space? (24 extra space between menu and icons)
            if( space - titleWidth - menuWidth - iconsWidth - 24 < 0 ) {
                menuPrimaryContainer.css('display', 'block');
            } else {
                menuPrimaryContainer.css('display', 'inline-block');
            }
        } else {
            menuPrimaryContainer.css('display', '');
        }
    }

    /* allow keyboard access/visibility for dropdown menu items */
    menuLink.on( 'focus', function(){
        $(this).parents('ul').addClass('focused');
    });
    menuLink.on( 'focusout', function(){
        $(this).parents('ul').removeClass('focused');
    });

    // make links and inputs inaccessible to keyboards unless sidebar is open
    function sidebarKeyboardNav() {

        if( sidebarPrimary.hasClass('open') ) {
            sidebarPrimaryContent.find('a, input').each(function(){
                $(this).attr('tabindex', '0');
            });
        } else {
            sidebarPrimaryContent.find('a, input').each(function(){
                $(this).attr('tabindex', '-1');
            });
        }
    }

    // mimic cover positioning without using cover
    function objectFitAdjustment() {

        // if the object-fit property is not supported
        if( !('object-fit' in document.body.style) ) {

            $('.featured-image').each(function () {

                if ( !$(this).parent().parent('.entry').hasClass('ratio-natural') ) {

                    if ( body.hasClass('title-overlay-post') && $('.entry').hasClass('ratio-natural') ) return;

                    var image = $(this).children('img').add($(this).children('a').children('img'));

                    // don't process images twice (relevant when using infinite scroll)
                    if (image.hasClass('no-object-fit')) return;

                    image.addClass('no-object-fit');

                    // if the image is not wide enough to fill the space
                    if (image.outerWidth() < $(this).outerWidth()) {

                        image.css({
                            'width': '100%',
                            'min-width': '100%',
                            'max-width': '100%',
                            'height': 'auto',
                            'min-height': '100%',
                            'max-height': 'none'
                        });
                    }
                    // if the image is not tall enough to fill the space
                    if (image.outerHeight() < $(this).outerHeight()) {

                        image.css({
                            'height': '100%',
                            'min-height': '100%',
                            'max-height': '100%',
                            'width': 'auto',
                            'min-width': '100%',
                            'max-width': 'none'
                        });
                    }
                }
            });
        }
    }

    // ===== Scroll to Top ==== //

    if ( $('#scroll-to-top').length !== 0 ) {
        $(window).on( 'scroll', function() {
            if ($(this).scrollTop() >= 200) {        // If page is scrolled more than 50px
                $('#scroll-to-top').addClass('visible');    // Fade in the arrow
            } else {
                $('#scroll-to-top').removeClass('visible');   // Else fade out the arrow
            }
        });
        $('#scroll-to-top').click(function(e) {      // When arrow is clicked
            $('body,html').animate({
                scrollTop : 0                       // Scroll to top of body
            }, 600);
            $(this).blur();
        });
    }
});

/* fix for skip-to-content link bug in Chrome & IE9 */
window.addEventListener("hashchange", function(event) {

    var element = document.getElementById(location.hash.substring(1));

    if (element) {

        if (!/^(?:a|select|input|button|textarea)$/i.test(element.tagName)) {
            element.tabIndex = -1;
        }

        element.focus();
    }

}, false);

// wait to see if a touch event is fired
var hasTouch;
window.addEventListener('touchstart', setHasTouch, false );

// require a double-click on parent dropdown items
function setHasTouch() {

    hasTouch = true;

    // Remove event listener once fired
    window.removeEventListener('touchstart', setHasTouch);

    // get the width of the window
    var w = window,
        d = document,
        e = d.documentElement,
        g = d.getElementsByTagName('body')[0],
        x = w.innerWidth || e.clientWidth || g.clientWidth;


    // don't require double clicks for the toggle menu
    if (x > 899) {
        enableTouchDropdown();
    }
}

// require a second click to visit parent navigation items
function enableTouchDropdown(){

    // get all the parent menu items
    var menuParents = document.getElementsByClassName('menu-item-has-children');

    // add a 'closed' class to each and add an event listener to them
    for (i = 0; i < menuParents.length; i++) {
        menuParents[i].className = menuParents[i].className + " closed";
        menuParents[i].addEventListener('click', openDropdown);
    }
}

// check if an element has a class
function hasClass(element, cls) {
    return (' ' + element.className + ' ').indexOf(' ' + cls + ' ') > -1;
}

// open the dropdown without visiting parent link
function openDropdown(e){

    // if has 'closed' class...
    if(hasClass(this, 'closed')){
        // prevent link from being visited
        e.preventDefault();
        // remove 'closed' class to enable link
        this.className = this.className.replace('closed', '');
    }
}
