/* This file is included both in funsite and edx-platorm/lms */
function checkCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for (var i=0;i < ca.length;i++) {
        var c = ca[i];
        while (c.charAt(0)==' ') {
            c = c.substring(1,c.length);
        }
        if (c.indexOf(nameEQ) === 0) {
            return c.substring(nameEQ.length,c.length);
        }
    }
    return null;
}

$(document).ready(function() {
    /* select current page menu item */
    var page = window.location.pathname.split('/')[1];

    $('#sandwich-overlay [data-location="'+ page +'"]').addClass('selected');

    /* Handle FUN overlays closing by clicking X */
    $('.close-overlay').on('click', function(event) {
        $('div.sequence-nav').css('z-index', 'auto');
        $(this).closest('.overlay').slideUp();
    });

    /* Handle FUN overlays closing by hiting escape */
    $(document).keydown(function(event) {
        if (event.keyCode == 27) { // ESC key
            if ($('#sandwich-overlay').is(':visible')) {
                toggleSandwichMenu();
            } else {
                $('.hide-on-escape-key:visible').hide();
            }
        }
    });

    /* Sandwich menu*/
    $('#sandwich-menu-icon').on('click', function(event) {
        toggleSandwichMenu();
    });

    function toggleSandwichMenu() {
        $('#sandwich-menu-icon').toggleClass('open');
        $('#sandwich-overlay').slideToggle(250);
    }

    /* Dropdown menu */
    $('#top-menu .toggle-dropdown-menu').on('click', toggleDropdown);
    $('body').click(function(e) {
        if ($('#top-menu .fun-dropdown-menu').is(":visible")) {
            $('#top-menu .fun-dropdown-menu').slideUp();
            toggleAccessiblePopUpAria(false);
        }

        // Hide elements on click outside of element
        $('.hide-on-body-click:visible').hide();
    });

    function toggleDropdown(event) {
        if ($('#top-menu .fun-dropdown-menu').is(":hidden")) {
            $('#top-menu .fun-dropdown-menu').slideDown(100);
            $('#top-menu .fun-dropdown-menu').show();
            toggleAccessiblePopUpAria(true);
        } else {
            $('#top-menu .fun-dropdown-menu').hide();
            toggleAccessiblePopUpAria(false);
        }
        event.preventDefault();
        event.stopPropagation();
    }

    function toggleAccessiblePopUpAria(display) {
        // aria-haspopup is used to improve accessibility.
        $('#top-menu .right-nav .toggle-dropdown-menu').attr('aria-haspopup', display);
    }

    /* Fill csrf token in forms that require it. For forms included in pages
     * cached in anonymous mode, the csrf_token variable is not usable. */
    var csrfToken = checkCookie('csrftoken');
    var forms = $("form.missing-csrf");
    if (forms.length > 0) {
        if (csrfToken) {
            forms.append("<input type='hidden' name='csrfmiddlewaretoken' style='display: none;' value='" + csrfToken + "'/>");
        } else {
            console.error("Missing CSRF token. Forms will not be submitted properly.");
        }
    }

    /* Handle search course global widget */
    $('#search-site').keyup(function(event) {
        var pattern = $(this).val();
        if ((window.location.pathname === '/cours/') || (pattern !== '') && (event.keyCode === 13)) {
            if (pattern) {
                window.location.href = '/cours/#search?' + $.param([
                    {name: 'query', value: pattern},
                ]);
            } else {
                window.location.href = '/cours/#';
            }
        }
    });
 });