(function ($) {
    // default settings
    var defaultSettings = {
        // DESKTOP MODE SETTINGS
        logo_align: 'left',         // align the logo left or right. options (left) or (right)
        links_align: 'left',        // align the links left or right. options (left) or (right)
        socialBar_align: 'left',    // align the socialBar left or right. options (left) or (right)
        searchBar_align: 'right',   // align the search bar left or right. options (left) or (right)
        trigger: 'hover',           // show drop down using click or hover. options (hover) or (click)
        effect: 'fade',             // drop down effects. options (fade), (scale), (expand-top), (expand-bottom), (expand-left), (expand-right)
        effect_speed: 400,          // drop down show speed in milliseconds
        sibling: true,              // hide the others showing drop downs if this option true. this option works on if the trigger option is "click". options (true) or (false)
        outside_click_close: true,  // hide the showing drop downs when user click outside the menu. this option works if the trigger option is "click". options (true) or (false)
        top_fixed: false,           // fixed the menu top of the screen. options (true) or (false)
        sticky_header: false,       // menu fixed on top when scroll down down. options (true) or (false)
        sticky_header_height: 200,  // sticky header height top of the screen. activate sticky header when meet the height. option change the height in px value.
        menu_position: 'horizontal',    // change the menu position. options (horizontal), (vertical-left) or (vertical-right)
        full_width: true,           // make menu full width. options (true) or (false)
        // MOBILE MODE SETTINGS
        mobile_settings: {
            collapse: false,    // collapse the menu on click. options (true) or (false)
            sibling: true,      // hide the others showing drop downs when click on current drop down. options (true) or (false)
            scrollBar: true,    // enable the scroll bar. options (true) or (false)
            scrollBar_height: 400,  // scroll bar height in px value. this option works if the scrollBar option true.
            top_fixed: false,       // fixed menu top of the screen. options (true) or (false)
            sticky_header: false,   // menu fixed on top when scroll down down. options (true) or (false)
            sticky_header_height: 200   // sticky header height top of the screen. activate sticky header when meet the height. option change the height in px value.
        }
    };
    // extend function
    $.fn.megaMenu = function (settings) {
        settings = $.extend({}, defaultSettings, settings || {});
        return this.each(function () {

            // variables
            var $this = $(this),
                $ul = 'ul',
                $li = 'li',
                $a = 'a',
                menu_logo = $this.find('.menu-logo'),
                menu_logo_li = menu_logo.children($li),
                menu_links = $this.find('.menu-links'),
                menu_links_li = menu_links.children($li),
                menu_socialBar = $this.find('.menu-social-bar'),
                menu_searchBar = $this.find('.menu-search-bar'),
                mobile_trigger_button = '.menu-mobile-collapse-trigger',
                mobile_dropDown_trigger = '.mobileTriggerButton',
                desktop_dropDown_trigger = '.desktopTriggerButton',
                activeClass = 'active',
                activeTrigger = 'activeTrigger',
                activeTriggerMobile = 'activeTriggerMobile',
                dropDown = '.drop-down-multilevel, .drop-down, .drop-down-tab-bar',
                desktopTopFixed = 'desktopTopFixed',
                mobileTopFixed = 'mobileTopFixed',
                fullWidth = 'menuFullWidth',
                Canvas;

            // Main Object
            Canvas = {
                // menu full width function
                menu_full_width: function () {
                    // check if the full_width options true
                    if (settings.full_width === true) {
                        // add class menu full width
                        $this.addClass(fullWidth);
                    }
                },
                // logo align function
                logo_Align: function () {
                    // check is the logo align right
                    if (settings.logo_align === 'right') {
                        // add class menu align right
                        menu_logo.addClass('menu-logo-align-right');
                    }
                },
                // menu links align right
                links_Align: function () {
                    // check if the links align right
                    if (settings.links_align === 'right') {
                        // add class menu menu links align
                        menu_links.addClass('menu-links-align-right');
                    }
                },
                // menu social bar align right
                social_bar_Align: function () {
                    // check if the social bar align right
                    if (settings.socialBar_align === 'right') {
                        // add class menu social bar align
                        menu_socialBar.addClass('menu-social-bar-right');
                    }
                },
                // menu search bar align right
                search_bar_Align: function () {
                    // check if the search bar align right
                    if (settings.searchBar_align === 'left') {
                        // add class menu search bar align
                        menu_searchBar.addClass('menu-search-bar-left');
                    }
                },
                // mobile collapse trigger button
                collapse_trigger_button: function () {
                    // check if the collapse true
                    if (settings.mobile_settings.collapse === true) {
                        // append the mobile collapse trigger button
                        menu_logo_li.append('<div class="menu-mobile-collapse-trigger">' +
                            '<span></span>' +
                            '</div>');
                        // hide the menu links, menu social bar
                        var drop_down = menu_links.add(menu_socialBar);
                        drop_down.hide(0);
                        // apply css
                        menu_searchBar.addClass(activeClass);
                        // add the click trigger
                        $this.find(mobile_trigger_button).on('click', function () {
                            // check if the menu links and menu social bar hide
                            if (drop_down.is(':hidden')) {
                                // show the drop down
                                $(this).addClass(activeClass);
                                drop_down.show(0);
                            } else {
                                // hide the drop down
                                $(this).removeClass(activeClass);
                                drop_down.hide(0);
                            }
                            return false;
                        });
                    }
                },
                // switch effects
                switch_effects: function () {
                    switch (settings.effect) {
                        case 'fade':
                            $this.find(dropDown).addClass('effect-fade');
                            break;
                        case 'scale':
                            $this.find(dropDown).addClass('effect-scale');
                            break;
                        case 'expand-top':
                            $this.find(dropDown).addClass('effect-expand-top');
                            break;
                        case 'expand-bottom':
                            $this.find(dropDown).addClass('effect-expand-bottom');
                            break;
                        case 'expand-left':
                            $this.find(dropDown).addClass('effect-expand-left');
                            break;
                        case 'expand-right':
                            $this.find(dropDown).addClass('effect-expand-right');
                            break;
                    }
                },
                // transition delay
                transition_delay: function () {
                    // add the effects class on drop down
                    $this.find(dropDown).css({
                        'webkitTransition': 'all ' + settings.effect_speed + 'ms ease ',
                        'transition': 'all ' + settings.effect_speed + 'ms ease '
                    });
                },
                // hover trigger for desktop mode
                hover_trigger: function () {
                    // check if the trigger hover
                    if (settings.trigger === 'hover') {
                        // add the effects class on drop down
                        Canvas.transition_delay();
                        // add hover trigger
                        $this.find(dropDown).parents($li).addClass('hoverTrigger');
                        // switch effects
                        Canvas.switch_effects();
                    }
                },
                // click trigger for mobile mode
                mobile_trigger: function () {
                    // append the mobile trigger div
                    $this.find(dropDown).prev($a).append('<div class="mobileTriggerButton"></div>');
                    // add the click trigger on mobile trigger div
                    $this.find(mobile_dropDown_trigger).on('click', function () {
                        // variables
                        var elem = $(this),
                            parents = elem.parents($a),
                            drop_down = parents.next(dropDown);
                        // check if the drop down is hidden
                        if (drop_down.is(':hidden')) {
                            // check if the sibling true
                            if (settings.mobile_settings.sibling === true) {
                                // hide the others opens drop downs
                                elem.parents($this).siblings($ul + ',' + $li).find(dropDown).hide(0);
                                // remove active class
                                elem.parents($this).siblings($li).removeClass(activeTriggerMobile);
                                elem.parents($this).siblings($ul).find($li).removeClass(activeTriggerMobile);
                            }
                            // add active class
                            parents.parent($li).addClass(activeTriggerMobile);
                            // show drop down
                            drop_down.show(0);
                        } else {
                            // <--- removed to fix bug where links with subpages are not accessibles in mobile view
                            // remove active class
                            // parents.parent($li).removeClass(activeTriggerMobile);
                            // hide drop down
                            // drop_down.hide(0);
                            // ---->
                            window.location.href = $(this).parent('a').attr('href');
                        }
                        // stop a tag going to anywhere
                        return false;
                    });
                    // stop icons click behaviour
                    $this.find('i.fa.fa-indicator').on('click', function () {
                        return false;
                    });
                },
                // click trigger for desktop mode
                click_trigger: function () {
                    // check if the trigger click
                    if (settings.trigger === 'click') {
                        // append the desktop trigger div
                        $this.find(dropDown).prev($a).append('<div class="desktopTriggerButton"></div>');
                        // add click trigger div
                        $this.find(dropDown).parents($li).addClass('ClickTrigger');
                        // add the transition on drop down
                        Canvas.switch_effects();
                        Canvas.transition_delay();
                        // add the click trigger on desktop trigger div
                        $this.find(desktop_dropDown_trigger).on('click', function (event) {
                            event.stopPropagation();
                            event.stopImmediatePropagation();
                            // variables
                            var elem = $(this),
                                parents = elem.parents($a),
                                drop_down = parents.next(dropDown);
                            // check if the drop down is hidden
                            if (!(drop_down.hasClass(activeClass))) {
                                // check if the sibling true
                                if (settings.sibling === true) {
                                    // hide the others opens drop downs
                                    elem.parents($this).siblings($ul + ',' + $li).find(dropDown).removeClass(activeClass);
                                    // remove active class
                                    elem.parents($this).siblings($li).removeClass(activeTrigger);
                                    elem.parents($this).siblings($ul).find($li).removeClass(activeTrigger);
                                }
                                // add active class
                                parents.parent($li).addClass(activeTrigger);
                                // show drop down
                                drop_down.addClass(activeClass);
                            } else {
                                // remove active class
                                parents.parent($li).removeClass(activeTrigger);
                                // hide drop down
                                drop_down.removeClass(activeClass);
                            }
                            // stop a tag going to anywhere
                            //return false;
                        });
                    }
                },
                // outside click to close drop downs
                /*outside_close: function () {
                    // check if the outside close setting true for desktop
                    if (settings.outside_click_close === true
                        && settings.trigger === 'click'
                        && $this.find(dropDown).is(':visible')) {
                        // add the click trigger on document
                        $(document).off('click').on('click', function (event) {
                            if (!$this.is(event.target) && $this.has(event.target).length === 0) {
                                $this.find(dropDown).removeClass(activeClass);
                                menu_links_li.removeClass('activeTrigger');
                            }
                        });
                    } else {
                        // on mobile mode off the click trigger
                        $(document).off('click');
                    }
                },*/
                // scroll bar for mobile mode
                scroll_bar: function () {
                    // check if the scroll bar true
                    if (settings.mobile_settings.scrollBar === true) {
                        // add the css on menu links
                        menu_links.css({
                            'maxHeight': settings.mobile_settings.scrollBar_height + 'px',
                            'overflow': 'auto'
                        });
                    }
                },
                // menu fixed on top
                top_Fixed: function () {
                    // check if the top fixed true for desktop mode
                    if (settings.top_fixed === true) {
                        $this.addClass(desktopTopFixed);
                    }
                    // mobile mode top fixed
                    if (settings.mobile_settings.top_fixed) {
                        $this.addClass(mobileTopFixed);
                    }
                },
                // sticky header
                sticky_Header: function () {
                    // variable
                    var $window = $(window),
                        scrollFlag = true,
                        scrollFlagMobile = true,
                        logoHeight = $('.menu-logo').outerHeight();
                        if(!$('#header').hasClass('logo-center')){  
                            $('.mega-menu .menu-list-items').height(logoHeight);
                        }
                    // media query
                    //if (!($this.find(dropDown).is(':hidden'))) {
                        // off the scroll
                       // $window.off('scroll');
                        // check if the sticky header true
                        if (settings.sticky_header === true
                            && settings.menu_position === 'horizontal'
                            && settings.top_fixed === false) {
                            // scroll function
                            $window.on('scroll', function () {
                                if ($window.scrollTop() > settings.sticky_header_height) {

                                    // check if flag true
                                    if (scrollFlag === true) {
                                         if(!$('#header').hasClass('logo-center')){
                                          $('.mega-menu .menu-list-items').height('auto');
                                         }
                                        // fade out
                                        $this.fadeOut(200, function () {
                                            // add class and fade in                                          
                                            $(this).addClass(desktopTopFixed);
                                            if(!$('#header').hasClass('logo-center')){
                                                 var logoHeight2 = $('.menu-logo img').outerHeight(true);
                                                 $('.mega-menu .menu-list-items').height(logoHeight2);
                                             }
                                            $(this).fadeIn(200);
                                        });
                                        // scroll flag false
                                        scrollFlag = false;
                                    }
                                } else {
                                    // check if flag false
                                    if (scrollFlag === false) {
                                        // fade out
                                        $this.fadeOut(200, function () {
                                           if(!$('#header').hasClass('logo-center')){  
                                                $('.mega-menu .menu-list-items').height(logoHeight);
                                            }
                                            // add class and fade in
                                            $(this).removeClass(desktopTopFixed).fadeIn(200);
                                        });
                                        // scroll flag true
                                        scrollFlag = true;
                                    }
                                }
                            });
                        }
                   // } else {
                        // off the scroll
                       // $window.off('scroll');
                        // check if the mobile sticky true
                        if (settings.mobile_settings.sticky_header === true
                            && settings.top_fixed === false) {
                            // on the scroll
                            $window.on('scroll', function () {
                                if ($window.scrollTop() > settings.mobile_settings.sticky_header_height) {
                                    // check if flag true
                                    if (scrollFlagMobile === true) {
                                        // add class
                                        $this.addClass(mobileTopFixed);
                                        // flag false
                                        scrollFlagMobile = false;
                                    }
                                } else {
                                    // check if flag false
                                    if (scrollFlagMobile === false) {
                                        // remove class
                                        $this.removeClass(mobileTopFixed);
                                        // scroll flag true
                                        scrollFlagMobile = true;
                                    }
                                }
                            });
                        }
                   // }
                },
                // position change
                position: function () {
                    // check if the position left
                    if (settings.menu_position === 'vertical-left') {
                        $this.addClass('vertical-left');
                    } else if (settings.menu_position === 'vertical-right') {
                        $this.addClass('vertical-right');
                    }
                }
            };

            // call functions
            Canvas.menu_full_width();
            Canvas.logo_Align();
            Canvas.links_Align();
            Canvas.social_bar_Align();
            Canvas.search_bar_Align();
            Canvas.collapse_trigger_button();
            Canvas.hover_trigger();
            Canvas.mobile_trigger();
            Canvas.click_trigger();
            // Canvas.outside_close();
            Canvas.scroll_bar();
            Canvas.top_Fixed();
            Canvas.sticky_Header();
            Canvas.position();
            // window resize function used for update the function on windows resize
            $(window).resize(function () {
                // Canvas.outside_close();
              //  Canvas.sticky_Header();
            });
        });
    };
    /*global $, jQuery, document*/
}(jQuery));
