"use strict";
$(document).ready(function () {

    if ($("body").attr("class").match(/\bcontext-course_(.[0-9]*)/)) {

        //insert course ID into variable
        var courseID = $("body").attr("class").match(/\bcontext-course_(.[0-9]*)/)[1];

        $.getJSON("/api/v1/courses/" + courseID, "include[]=term", function (data) {

            $("#breadcrumbs").html(data.name);
            $('#section-tabs-header-subtitle.ellipsis').html(data.term.name + '<br>' + data.course_code);

        }); //end get jSON

    } //end check if it is a course
}); //end on document ready
window.addEventListener('load', function () {
    function getUrlVars(url) {
        var vars = {};
        var parts = url.replace(/[?&]+([^=&]+)=([^&]*)/gi, function (m, key, value) {
            vars[key] = value;
        });
        return vars;
    }

    if ((/^\/courses\/\d+(\/pages\/.*)?$/.test(window.location.pathname) || /^\/courses\/\d+(\/wiki)?$/.test(window.location.pathname)) && typeof ENV.WIKI_PAGE !== 'undefined') {
        var isoDate = function isoDate(ds) {
            var d = ds.toISOString().split(/\D/);
            return new Date(d[0], --d[1], d[2]);
        },
        deltaDate = function deltaDate(input, days, months, years) {
            return new Date(
                input.getFullYear() + years,
                input.getMonth() + months,
                Math.min(
                    input.getDate() + days,
                    new Date(input.getFullYear() + years, input.getMonth() + months + 1, 0).getDate()));
        },
        dateDiff = function dateDiff(a, b) {
            return Math.round((isoDate(b) - isoDate(a)) / 8.64e7);
        },
        roundDays = function roundDays(adate) {
            var showstartday = adate.toString().split(/\s/),
            startday = (showstartday[0]),
            revert = 0;
            if (startday == "Tue")
                revert = -1;
            if (startday == "Wed")
                revert = -2;
            if (startday == "Thu")
                revert = -3;
            if (startday == "Fri")
                revert = -4;
            if (startday == "Sat")
                revert = -5;

            return (deltaDate(adate, revert, 0, 0));
        },

        setWeek = function setWeek(dst, ds, de, dcalstart) {
            var realstart,
            tstart = new Date(dst),
            tcalstart = new Date(dcalstart),
            cstart = new Date(ds),
            end = new Date(de),
            today = new Date(),
            day = today.toString().split(/\s/),
            showtoday = "".concat(day[0], ", ").concat(day[1], " ").concat(day[2], ", ").concat(day[3]);
            console.log('Term Start: (' + dst + ') ' + tstart);
            console.log('Course Start: (' + ds + ') ' + cstart);
            console.log('Term Calendar Start: (' + dcalstart + ') ' + tcalstart);
            console.log('Course End: (' + de + ') ' + end);
            realstart = tstart;
            if (ds != null)
                realstart = cstart;
            if (ds == null && dst == null)
                realstart = tcalstart;
            console.log('Calculate Week From: ' + realstart);
            var startmon = roundDays(realstart),
            temptoday = deltaDate(today, 0, 0, 0),
            wk = Math.floor(dateDiff(startmon, temptoday) / 7 + 1),
            term = de != null ? Math.floor(dateDiff(startmon, end) / 7) : 14;
			var semester = 'fall';
			if (realstart.getMonth() < 7) semester = 'spring';
			var week;
			if (semester == 'spring') {
				week =  wk >= 8 ? wk - 1 : wk;
			} else {
				week =  wk >= 14 ? wk - 1 : wk;
			}
            term = realstart.getMonth() < 7 && wk >= 13 ? term - 1 : term;
            var sb = realstart.getMonth() < 7 && wk == 8 ? 1 : 0,
            links = document.querySelectorAll('.course-week-links'),
            cwc = document.getElementById('course-week-count'),
            st = document.getElementById('showtoday'),
            toExtract = window.location.href,
            course,
            toplink,
            weeklink,
            php = 'lecture',
            pageweek = 1,
            weekday = 0,
            navlink = document.getElementById('nav'),
            args = '&test';
			console.log('wk:'+wk);
			console.log('term:'+term);
			console.log('week:'+week);
			console.log('sb:'+sb);
            if (term >= 14)
                term = 14;
            if (term >= 8 && term <= 12)
                term = 10;
            if (term <= 7)
                term = 5;
            course = toExtract.match('courses/(.*)')[1];
            if (toExtract.includes('pages'))
                course = toExtract.match('courses/(.*)\/pages')[1];
            if (toExtract.includes('/wiki'))
                course = toExtract.match('courses/(.*)\/wiki')[1];
            if (toExtract.includes('week'))
                pageweek = parseInt(toExtract.match('week-(.*)')[1], 10);
            if (toExtract.includes('weekend') || toExtract.includes('looking')) {
                php = 'suggested';
                weekday = 6;
            }
            if (toExtract.includes('objectives'))
                php = 'objectives';
            if (toExtract.includes('suggested'))
                php = 'suggested';
            if (toExtract.includes('monday')) {
                php = 'suggested';
                weekday = 1;
            }
            if (toExtract.includes('tuesday')) {
                php = 'suggested';
                weekday = 2;
            }
            if (toExtract.includes('wednesday')) {
                php = 'suggested';
                weekday = 3;
            }
            if (toExtract.includes('thursday')) {
                php = 'suggested';
                weekday = 4;
            }
            if (toExtract.includes('friday')) {
                php = 'suggested';
                weekday = 5;
            }
            var regexr = new RegExp('lessons-week-' + pageweek + '-');
            var regexr2 = new RegExp('readings-week-' + pageweek + '-');
            if (toExtract.includes('lessons') && !regexr.test(toExtract))
                php = 'lessons';
            if (toExtract.includes('readings') && !regexr2.test(toExtract))
                php = 'lessons';
            if (toExtract.includes('assignments') || toExtract.includes('activities'))
                php = 'assignments';
            if (navlink !== null) {
                navlink.src = 'https://etop.landmark.edu/timeline/' + php + '.php?week=' + pageweek + '&course=' + course + '&day=' + weekday + '&term=' + term;
                navlink.title = 'Navigation';
                navlink.removeAttribute("sandbox");
            }
            if (cwc !== null)
                cwc.textContent = 'Week ' + week;
            if (sb == 1) {
                cwc.textContent = 'Spring Break';
            }
            if (cwc !== null && (week > 15 || week < 1))
                cwc.textContent = "a week outside of this course's calendar";

            if (document.getElementById('top') !== null) {
                toplink = document.getElementById('top').src;
                if (toplink.includes('glossary'))
                    args = args + '&glossary';
                if (toplink.includes('wiki'))
                    args = args + '&wiki';
                if (toplink.includes('master'))
                    args = args + '&master';
                if (toplink.includes('syl='))
                    args = args + '&syl=' + getUrlVars(toplink)["syl"];
                if (toplink.includes('calendar'))
                    args = args + '&calendar=' + getUrlVars(toplink)["calendar"];
                if (toplink !== null)
                    document.getElementById('top').src = 'https://etop.landmark.edu/syllabi/syllabus.php?week=' + week + '&course=' + course + args;
            }
            if (document.getElementById('weeklink') !== null) {
                weeklink = document.getElementById('weeklink');
                weeklink.href = 'https://landmark.instructure.com/courses/' + course + '/pages/objectives-week-' + week;
                weeklink.dataset.apiEndpoint = 'https://landmark.instructure.com/courses/' + course + '/pages/objectives-week-' + week;
                cwc.href = weeklink.href;
                cwc.dataset.apiEndpoint = weeklink.dataset.apiEndpoint;
            }
            if (st !== null)
                st.textContent = showtoday;
            var regex = new RegExp('Week\\s+' + week + '\\b');
            Object.keys(links).forEach(function (i) {
                if (regex.test(links[i].textContent.replace(/\D+$/g, "")) && sb !== 1) {
                    cwc.style.background = null;
                    links[i].style.background = null;
                    cwc.href = links[i].href;
                    if (cwc.nodeName != "SPAN")
                        cwc.className += " highlight";
                    return links[i].className += " highlight";
                    //return links[i].classList.add('active-week');
                }
            });
        };

        fetch("/api/v1/courses/".concat(ENV.COURSE_ID, "?include%5B%5D=term"), {
            'headers': {
                'accept': 'application/json',
            }
        }).then(function (response) {
            return response.text();
        }).then(function (r) {
            var url = "/api/v1/accounts/1/terms/" + JSON.parse(r).term.id;
            fetch(url, {
                'headers': {
                    'accept': 'application/json',
                }
            }).then(function (response) {
                return response.text();
            }).then(function (r2) {
                return setWeek(JSON.parse(r).term.start_at, JSON.parse(r).start_at, JSON.parse(r).end_at, JSON.parse(r2).start_at);
            });

        });

    }
}, false);

var atomicSearchWidgetScript = document.createElement("script");
atomicSearchWidgetScript.src = "https://js.atomicsearchwidget.com/atomic_search_widget.js";
document.getElementsByTagName("head")[0].appendChild(atomicSearchWidgetScript);
// GOOGLE TAG MANAGER CODE
(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
})(window,document,'script','dataLayer','GTM-583WVLQ');
var googleTagManager = '<!-- Google Tag Manager (noscript) -->' +
    '<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-583WVLQ" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>' +
    '<!-- End Google Tag Manager (noscript) -->';
$('body').prepend(googleTagManager);