define(['require', 'browser', 'globalize', 'connectionManager', 'serverNotifications', 'loading', 'datetime', 'focusManager', 'userSettings', 'imageLoader', 'events', 'layoutManager', 'itemShortcuts', 'registrationServices', 'dom', 'clearButtonStyle', 'css!./guide.css', 'programStyles', 'material-icons', 'scrollStyles', 'emby-button', 'paper-icon-button-light', 'emby-tabs'], function (require, browser, globalize, connectionManager, serverNotifications, loading, datetime, focusManager, userSettings, imageLoader, events, layoutManager, itemShortcuts, registrationServices, dom) {
    'use strict';

    function showViewSettings(instance) {

        require(['guide-settings-dialog'], function (guideSettingsDialog) {
            guideSettingsDialog.show(instance.categoryOptions).then(function () {
                instance.refresh();
            });
        });
    }

    function Guide(options) {

        var self = this;
        var items = {};

        self.options = options;
        self.categoryOptions = { categories: [] };

        // 30 mins
        var cellCurationMinutes = 30;
        var cellDurationMs = cellCurationMinutes * 60 * 1000;
        var msPerDay = 86400000;
        var totalRendererdMs = msPerDay;

        var currentDate;
        var currentStartIndex = 0;
        var currentChannelLimit = 0;
        var autoRefreshInterval;

        self.refresh = function () {

            currentDate = null;
            reloadPage(options.element);
            restartAutoRefresh();
        };

        self.pause = function () {
            stopAutoRefresh();
        };

        self.resume = function (refreshData) {
            if (refreshData) {
                self.refresh();
            } else {
                restartAutoRefresh();
            }
        };

        self.destroy = function () {

            stopAutoRefresh();

            events.off(serverNotifications, 'TimerCreated', onTimerCreated);
            events.off(serverNotifications, 'SeriesTimerCreated', onSeriesTimerCreated);
            events.off(serverNotifications, 'TimerCancelled', onTimerCancelled);
            events.off(serverNotifications, 'SeriesTimerCancelled', onSeriesTimerCancelled);

            clearCurrentTimeUpdateInterval();
            setScrollEvents(options.element, false);
            itemShortcuts.off(options.element);
            items = {};
        };

        function restartAutoRefresh() {

            stopAutoRefresh();

            var intervalMs = 60000 * 15; // (minutes)

            autoRefreshInterval = setInterval(function () {
                self.refresh();
            }, intervalMs);
        }

        function stopAutoRefresh() {
            if (autoRefreshInterval) {
                clearInterval(autoRefreshInterval);
                autoRefreshInterval = null;
            }
        }

        function normalizeDateToTimeslot(date) {

            var minutesOffset = date.getMinutes() - cellCurationMinutes;

            if (minutesOffset >= 0) {

                date.setHours(date.getHours(), cellCurationMinutes, 0, 0);

            } else {

                date.setHours(date.getHours(), 0, 0, 0);
            }

            return date;
        }

        function showLoading() {
            loading.show();
        }

        function hideLoading() {
            loading.hide();
        }

        var currentTimeUpdateInterval;
        var currentTimeIndicatorBar;
        var currentTimeIndicatorArrow;
        function startCurrentTimeUpdateInterval() {
            clearCurrentTimeUpdateInterval();

            //currentTimeUpdateInterval = setInterval(updateCurrentTimeIndicator, 1000);
            currentTimeUpdateInterval = setInterval(updateCurrentTimeIndicator, 60000);
            updateCurrentTimeIndicator();
        }

        function clearCurrentTimeUpdateInterval() {
            var interval = currentTimeUpdateInterval;
            if (interval) {
                clearInterval(interval);
            }
            currentTimeUpdateInterval = null;
            currentTimeIndicatorBar = null;
            currentTimeIndicatorArrow = null;
        }

        function updateCurrentTimeIndicator() {

            if (!currentTimeIndicatorBar) {
                currentTimeIndicatorBar = options.element.querySelector('.currentTimeIndicatorBar');
            }
            if (!currentTimeIndicatorArrow) {
                currentTimeIndicatorArrow = options.element.querySelector('.currentTimeIndicatorArrowContainer');
            }

            var dateDifference = new Date().getTime() - currentDate.getTime();
            var pct = dateDifference > 0 ? (dateDifference / totalRendererdMs) : 0;
            pct = Math.min(pct, 1);

            if (pct <= 0 || pct >= 1) {
                currentTimeIndicatorBar.classList.add('hide');
                currentTimeIndicatorArrow.classList.add('hide');
            } else {
                currentTimeIndicatorBar.classList.remove('hide');
                currentTimeIndicatorArrow.classList.remove('hide');

                //pct *= 100;
                //pct = 100 - pct;
                //currentTimeIndicatorElement.style.width = (pct * 100) + '%';
                currentTimeIndicatorBar.style.transform = 'scaleX(' + pct + ')';
                currentTimeIndicatorArrow.style.transform = 'translateX(' + (pct * 100) + '%)';
            }
        }

        function getChannelLimit(context) {

            return registrationServices.validateFeature('livetv').then(function () {

                var limit = browser.slow ? 100 : 500;

                context.querySelector('.guideRequiresUnlock').classList.add('hide');

                return limit;

            }, function () {

                var limit = 5;

                context.querySelector('.guideRequiresUnlock').classList.remove('hide');
                context.querySelector('.unlockText').innerHTML = globalize.translate('sharedcomponents#LiveTvGuideRequiresUnlock', limit);

                return limit;
            });
        }

        function reloadGuide(context, newStartDate, focusProgramOnRender) {

            var apiClient = connectionManager.currentApiClient();

            var channelQuery = {

                StartIndex: 0,
                EnableFavoriteSorting: userSettings.get('livetv-favoritechannelsattop') !== 'false'
            };

            channelQuery.UserId = apiClient.getCurrentUserId();

            getChannelLimit(context).then(function (channelLimit) {

                currentChannelLimit = channelLimit;

                showLoading();

                channelQuery.StartIndex = currentStartIndex;
                channelQuery.Limit = channelLimit;
                channelQuery.AddCurrentProgram = false;
                channelQuery.EnableUserData = false;
                channelQuery.EnableImageTypes = "Primary";

                var categories = self.categoryOptions.categories || [];
                var displayMovieContent = !categories.length || categories.indexOf('movies') !== -1;
                var displaySportsContent = !categories.length || categories.indexOf('sports') !== -1;
                var displayNewsContent = !categories.length || categories.indexOf('news') !== -1;
                var displayKidsContent = !categories.length || categories.indexOf('kids') !== -1;
                var displaySeriesContent = !categories.length || categories.indexOf('series') !== -1;

                if (displayMovieContent && displaySportsContent && displayNewsContent && displayKidsContent) {
                    channelQuery.IsMovie = null;
                    channelQuery.IsSports = null;
                    channelQuery.IsKids = null;
                    channelQuery.IsNews = null;
                    channelQuery.IsSeries = null;
                } else {
                    if (displayNewsContent) {
                        channelQuery.IsNews = true;
                    }
                    if (displaySportsContent) {
                        channelQuery.IsSports = true;
                    }
                    if (displayKidsContent) {
                        channelQuery.IsKids = true;
                    }
                    if (displayMovieContent) {
                        channelQuery.IsMovie = true;
                    }
                    if (displaySeriesContent) {
                        channelQuery.IsSeries = true;
                    }
                }

                if (userSettings.get('livetv-channelorder') === 'DatePlayed') {
                    channelQuery.SortBy = "DatePlayed";
                    channelQuery.SortOrder = "Descending";
                } else {
                    channelQuery.SortBy = null;
                    channelQuery.SortOrder = null;
                }

                var date = newStartDate;
                // Add one second to avoid getting programs that are just ending
                date = new Date(date.getTime() + 1000);

                // Subtract to avoid getting programs that are starting when the grid ends
                var nextDay = new Date(date.getTime() + msPerDay - 2000);

                console.log(nextDay);
                apiClient.getLiveTvChannels(channelQuery).then(function (channelsResult) {

                    var btnPreviousPage = context.querySelector('.btnPreviousPage');
                    var btnNextPage = context.querySelector('.btnNextPage');

                    if (channelsResult.TotalRecordCount > channelLimit) {

                        context.querySelector('.guideOptions').classList.remove('hide');

                        btnPreviousPage.classList.remove('hide');
                        btnNextPage.classList.remove('hide');

                        if (channelQuery.StartIndex) {
                            context.querySelector('.btnPreviousPage').disabled = false;
                        } else {
                            context.querySelector('.btnPreviousPage').disabled = true;
                        }

                        if ((channelQuery.StartIndex + channelLimit) < channelsResult.TotalRecordCount) {
                            btnNextPage.disabled = false;
                        } else {
                            btnNextPage.disabled = true;
                        }

                    } else {
                        context.querySelector('.guideOptions').classList.add('hide');
                    }

                    apiClient.getLiveTvPrograms({
                        UserId: apiClient.getCurrentUserId(),
                        MaxStartDate: nextDay.toISOString(),
                        MinEndDate: date.toISOString(),
                        channelIds: channelsResult.Items.map(function (c) {
                            return c.Id;
                        }).join(','),
                        ImageTypeLimit: 1,
                        EnableImages: false,
                        //EnableImageTypes: layoutManager.tv ? "Primary,Backdrop" : "Primary",
                        SortBy: "StartDate",
                        EnableTotalRecordCount: false,
                        EnableUserData: false

                    }).then(function (programsResult) {

                        renderGuide(context, date, channelsResult.Items, programsResult.Items, apiClient, focusProgramOnRender);

                        hideLoading();

                    });
                });
            });
        }

        function getDisplayTime(date) {

            if ((typeof date).toString().toLowerCase() === 'string') {
                try {

                    date = datetime.parseISO8601Date(date, { toLocal: true });

                } catch (err) {
                    return date;
                }
            }

            return datetime.getDisplayTime(date).toLowerCase();
        }

        function getTimeslotHeadersHtml(startDate, endDateTime) {

            var html = '';

            // clone
            startDate = new Date(startDate.getTime());

            html += '<div class="timeslotHeadersInner">';

            while (startDate.getTime() < endDateTime) {

                html += '<div class="timeslotHeader">';

                html += getDisplayTime(startDate);
                html += '</div>';

                // Add 30 mins
                startDate.setTime(startDate.getTime() + cellDurationMs);
            }

            html += '<div class="currentTimeIndicatorBar hide">';
            html += '</div>';
            html += '<div class="currentTimeIndicatorArrowContainer hide">';
            html += '<i class="currentTimeIndicatorArrow md-icon">arrow_drop_down</i>';
            html += '</div>';

            return html;
        }

        function parseDates(program) {

            if (!program.StartDateLocal) {
                try {

                    program.StartDateLocal = datetime.parseISO8601Date(program.StartDate, { toLocal: true });

                } catch (err) {

                }

            }

            if (!program.EndDateLocal) {
                try {

                    program.EndDateLocal = datetime.parseISO8601Date(program.EndDate, { toLocal: true });

                } catch (err) {

                }

            }

            return null;
        }

        function getTimerIndicator(item) {

            var status;

            if (item.Type === 'SeriesTimer') {
                return '<i class="md-icon programIcon seriesTimerIcon">&#xE062;</i>';
            }
            else if (item.TimerId || item.SeriesTimerId) {

                status = item.Status || 'Cancelled';
            }
            else if (item.Type === 'Timer') {

                status = item.Status;
            }
            else {
                return '';
            }

            if (item.SeriesTimerId) {

                if (status !== 'Cancelled') {
                    return '<i class="md-icon programIcon seriesTimerIcon">&#xE062;</i>';
                }

                return '<i class="md-icon programIcon seriesTimerIcon seriesTimerIcon-inactive">&#xE062;</i>';
            }

            return '<i class="md-icon programIcon timerIcon">&#xE061;</i>';
        }

        function getChannelProgramsHtml(context, date, channel, programs, options, index) {

            var html = '';

            var startMs = date.getTime();
            var endMs = startMs + msPerDay - 1;

            programs = programs.filter(function (curr) {
                return curr.ChannelId === channel.Id;
            });

            var outerCssClass = layoutManager.tv ? 'channelPrograms channelPrograms-tv' : 'channelPrograms';

            html += '<div class="' + outerCssClass + '" data-channelid="' + channel.Id + '">';

            var clickAction = layoutManager.tv ? 'link' : 'programdialog';

            var categories = self.categoryOptions.categories || [];
            var displayMovieContent = !categories.length || categories.indexOf('movies') !== -1;
            var displaySportsContent = !categories.length || categories.indexOf('sports') !== -1;
            var displayNewsContent = !categories.length || categories.indexOf('news') !== -1;
            var displayKidsContent = !categories.length || categories.indexOf('kids') !== -1;
            var displaySeriesContent = !categories.length || categories.indexOf('series') !== -1;
            var enableColorCodedBackgrounds = userSettings.get('guide-colorcodedbackgrounds') === 'true';

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

                var program = programs[i];

                if (program.ChannelId !== channel.Id) {
                    continue;
                }

                parseDates(program);

                if (program.EndDateLocal.getTime() < startMs) {
                    continue;
                }

                if (program.StartDateLocal.getTime() > endMs) {
                    break;
                }

                items[program.Id] = program;

                var renderStartMs = Math.max(program.StartDateLocal.getTime(), startMs);
                var startPercent = (program.StartDateLocal.getTime() - startMs) / msPerDay;
                startPercent *= 100;
                startPercent = Math.max(startPercent, 0);

                var renderEndMs = Math.min(program.EndDateLocal.getTime(), endMs);
                var endPercent = (renderEndMs - renderStartMs) / msPerDay;
                endPercent *= 100;

                var cssClass = "programCell clearButton itemAction";
                var accentCssClass = null;
                var displayInnerContent = true;

                if (program.IsKids) {
                    cssClass += " childProgramInfo";
                    displayInnerContent = displayKidsContent;
                    accentCssClass = 'childAccent';
                } else if (program.IsSports) {
                    cssClass += " sportsProgramInfo";
                    displayInnerContent = displaySportsContent;
                    accentCssClass = 'sportsAccent';
                } else if (program.IsNews) {
                    cssClass += " newsProgramInfo";
                    displayInnerContent = displayNewsContent;
                    accentCssClass = 'newsAccent';
                } else if (program.IsMovie) {
                    cssClass += " movieProgramInfo";
                    displayInnerContent = displayMovieContent;
                    accentCssClass = 'movieAccent';
                }
                else if (program.IsSeries) {
                    cssClass += " plainProgramInfo";
                    displayInnerContent = displaySeriesContent;
                }
                else {
                    cssClass += " plainProgramInfo";
                    displayInnerContent = displayMovieContent && displayNewsContent && displaySportsContent && displayKidsContent && displaySeriesContent;
                }

                if (!displayInnerContent) {
                    accentCssClass = null;
                }

                if (enableColorCodedBackgrounds && accentCssClass) {
                    cssClass += ' ' + accentCssClass;

                    accentCssClass = null;
                } else {
                    accentCssClass = null;
                }

                var timerAttributes = '';
                if (program.TimerId) {
                    timerAttributes += ' data-timerid="' + program.TimerId + '"';
                }
                if (program.SeriesTimerId) {
                    timerAttributes += ' data-seriestimerid="' + program.SeriesTimerId + '"';
                }

                html += '<button data-action="' + clickAction + '"' + timerAttributes + ' data-channelid="' + program.ChannelId + '" data-id="' + program.Id + '" data-serverid="' + program.ServerId + '" data-type="' + program.Type + '" class="' + cssClass + '" style="left:' + startPercent + '%;width:' + endPercent + '%;">';

                if (displayInnerContent) {
                    var guideProgramNameClass = "guideProgramName";

                    html += '<div class="' + guideProgramNameClass + '">';

                    html += '<div class="guideProgramNameText">' + program.Name + '</div>';

                    var indicatorHtml = null;
                    if (program.IsLive && options.showLiveIndicator) {
                        indicatorHtml = '<span class="liveTvProgram guideProgramIndicator">' + globalize.translate('sharedcomponents#Live') + '</span>';
                    }
                    else if (program.IsPremiere && options.showPremiereIndicator) {
                        indicatorHtml = '<span class="premiereTvProgram guideProgramIndicator">' + globalize.translate('sharedcomponents#Premiere') + '</span>';
                    }
                    else if (program.IsSeries && !program.IsRepeat && options.showNewIndicator) {
                        indicatorHtml = '<span class="newTvProgram guideProgramIndicator">' + globalize.translate('sharedcomponents#AttributeNew') + '</span>';
                    }
                    else if (program.IsSeries && program.IsRepeat && options.showRepeatIndicator) {
                        indicatorHtml = '<span class="repeatTvProgram guideProgramIndicator">' + globalize.translate('sharedcomponents#Repeat') + '</span>';
                    }
                    if (indicatorHtml || (program.EpisodeTitle && options.showEpisodeTitle)) {
                        html += '<div class="guideProgramSecondaryInfo">';

                        html += indicatorHtml || '';

                        if (program.EpisodeTitle && options.showEpisodeTitle) {
                            html += '<span class="programSecondaryTitle">' + program.EpisodeTitle + '</span>';
                        }
                        html += '</div>';
                    }

                    html += '</div>';

                    if (program.IsHD && options.showHdIcon) {
                        //html += '<i class="guideHdIcon md-icon programIcon">hd</i>';
                        if (layoutManager.tv) {
                            html += '<div class="programIcon programTextIcon programTextIcon-tv">HD</div>';
                        } else {
                            html += '<div class="programIcon programTextIcon">HD</div>';
                        }
                    }

                    html += getTimerIndicator(program);

                    if (accentCssClass) {
                        html += '<div class="programAccent ' + accentCssClass + '"></div>';
                    }
                }

                html += '</button>';
            }

            html += '</div>';

            return html;
        }

        function renderPrograms(context, date, channels, programs) {

            var html = [];

            // Normally we'd want to just let responsive css handle this,
            // but since mobile browsers are often underpowered, 
            // it can help performance to get them out of the markup
            var allowIndicators = dom.getWindowSize().innerWidth >= 600;

            var options = {
                showHdIcon: allowIndicators && userSettings.get('guide-indicator-hd') === 'true',
                showLiveIndicator: allowIndicators && userSettings.get('guide-indicator-live') !== 'false',
                showPremiereIndicator: allowIndicators && userSettings.get('guide-indicator-premiere') !== 'false',
                showNewIndicator: allowIndicators && userSettings.get('guide-indicator-new') === 'true',
                showRepeatIndicator: allowIndicators && userSettings.get('guide-indicator-repeat') === 'true',
                showEpisodeTitle: layoutManager.tv ? false : true
            };

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

                html.push(getChannelProgramsHtml(context, date, channels[i], programs, options, i));
            }

            var programGrid = context.querySelector('.programGrid');
            programGrid.innerHTML = html.join('');

            programGrid.scrollTop = 0;
            programGrid.scrollLeft = 0;
        }

        function renderChannelHeaders(context, channels, apiClient) {

            var html = '';

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

                var channel = channels[i];
                var hasChannelImage = channel.ImageTags.Primary;
                var dataSrc = '';
                if (hasChannelImage) {

                    var url = apiClient.getScaledImageUrl(channel.Id, {
                        maxHeight: 200,
                        tag: channel.ImageTags.Primary,
                        type: "Primary"
                    });

                    dataSrc = ' data-src="' + url + '"';
                }

                var cssClass = 'channelHeaderCell clearButton itemAction lazy';

                if (layoutManager.tv) {
                    cssClass += ' channelHeaderCell-tv';
                }

                html += '<button type="button" class="' + cssClass + '"' + dataSrc + ' data-action="link" data-isfolder="' + channel.IsFolder + '" data-id="' + channel.Id + '" data-serverid="' + channel.ServerId + '" data-type="' + channel.Type + '">';

                cssClass = 'guideChannelNumber';

                html += '<h3 class="' + cssClass + '">' + channel.Number + '</h3>';

                if (!hasChannelImage && channel.Name) {
                    html += '<div class="guideChannelName">' + channel.Name + '</div>';
                }

                html += '</button>';
            }

            var channelList = context.querySelector('.channelsContainer');
            channelList.innerHTML = html;
            imageLoader.lazyChildren(channelList);
        }

        function renderGuide(context, date, channels, programs, apiClient, focusProgramOnRender) {

            //var list = [];
            //channels.forEach(function(i) {
            //    list.push(i);
            //});
            //channels.forEach(function (i) {
            //    list.push(i);
            //});
            //channels.forEach(function (i) {
            //    list.push(i);
            //});
            //channels.forEach(function (i) {
            //    list.push(i);
            //});
            //channels.forEach(function (i) {
            //    list.push(i);
            //});
            //channels.forEach(function (i) {
            //    list.push(i);
            //});
            //channels.forEach(function (i) {
            //    list.push(i);
            //});
            //channels.forEach(function (i) {
            //    list.push(i);
            //});
            //channels.forEach(function (i) {
            //    list.push(i);
            //});
            //channels.forEach(function (i) {
            //    list.push(i);
            //});
            //channels.forEach(function (i) {
            //    list.push(i);
            //});
            //channels.forEach(function (i) {
            //    list.push(i);
            //});
            //channels = list;
            var activeElement = document.activeElement;
            var itemId = activeElement && activeElement.getAttribute ? activeElement.getAttribute('data-id') : null;
            var channelRowId = null;

            if (activeElement) {
                channelRowId = dom.parentWithClass(activeElement, 'channelPrograms');
                channelRowId = channelRowId && channelRowId.getAttribute ? channelRowId.getAttribute('data-channelid') : null;
            }

            renderChannelHeaders(context, channels, apiClient);

            var startDate = date;
            var endDate = new Date(startDate.getTime() + msPerDay);
            context.querySelector('.timeslotHeaders').innerHTML = getTimeslotHeadersHtml(startDate, endDate);
            startCurrentTimeUpdateInterval();
            items = {};
            renderPrograms(context, date, channels, programs);

            if (focusProgramOnRender) {

                var focusElem;
                if (itemId) {
                    focusElem = context.querySelector('[data-id="' + itemId + '"]');
                }

                if (focusElem) {
                    focusManager.focus(focusElem);
                } else {

                    var autoFocusParent;

                    if (channelRowId) {
                        autoFocusParent = context.querySelector('[data-channelid="' + channelRowId + '"]');
                    }

                    if (!autoFocusParent) {
                        autoFocusParent = context.querySelector('.programGrid');
                    }
                    focusManager.autoFocus(autoFocusParent, true);
                }
            }
        }

        function nativeScrollTo(container, pos, horizontal) {

            if (container.scrollTo) {
                if (horizontal) {
                    container.scrollTo(pos, 0);
                } else {
                    container.scrollTo(0, pos);
                }
            } else {
                if (horizontal) {
                    container.scrollLeft = Math.round(pos);
                } else {
                    container.scrollTop = Math.round(pos);
                }
            }
        }

        var lastGridScroll = 0;
        var lastHeaderScroll = 0;
        function onProgramGridScroll(context, elem, timeslotHeaders) {

            if ((new Date().getTime() - lastHeaderScroll) >= 1000) {
                lastGridScroll = new Date().getTime();
                nativeScrollTo(timeslotHeaders, elem.scrollLeft, true);
            }
        }

        function onTimeslotHeadersScroll(context, elem, programGrid) {

            if ((new Date().getTime() - lastGridScroll) >= 1000) {
                lastHeaderScroll = new Date().getTime();
                nativeScrollTo(programGrid, elem.scrollLeft, true);
            }
        }

        function changeDate(page, date, focusProgramOnRender) {

            clearCurrentTimeUpdateInterval();

            var newStartDate = normalizeDateToTimeslot(date);
            currentDate = newStartDate;

            reloadGuide(page, newStartDate, focusProgramOnRender);
        }

        function getDateTabText(date, isActive, tabIndex) {

            var cssClass = isActive ? 'emby-tab-button guide-date-tab-button emby-tab-button-active' : 'emby-tab-button guide-date-tab-button';

            var html = '<button is="emby-button" class="' + cssClass + '" data-index="' + tabIndex + '" data-date="' + date.getTime() + '">';
            var tabText = datetime.toLocaleDateString(date, { weekday: 'short' });

            tabText += '<br/>';
            tabText += date.getDate();
            html += '<div class="emby-button-foreground">' + tabText + '</div>';
            html += '</button>';

            return html;
        }

        function setDateRange(page, guideInfo) {

            var today = new Date();
            today.setHours(today.getHours(), 0, 0, 0);

            var start = datetime.parseISO8601Date(guideInfo.StartDate, { toLocal: true });
            var end = datetime.parseISO8601Date(guideInfo.EndDate, { toLocal: true });

            start.setHours(0, 0, 0, 0);
            end.setHours(0, 0, 0, 0);

            if (start.getTime() >= end.getTime()) {
                end.setDate(start.getDate() + 1);
            }

            start = new Date(Math.max(today, start));

            var dateTabsHtml = '';
            var tabIndex = 0;

            var date = new Date();

            if (currentDate) {
                date.setTime(currentDate.getTime());
            }

            while (start <= end) {

                var isActive = date.getDate() === start.getDate() && date.getMonth() === start.getMonth() && date.getFullYear() === start.getFullYear();

                dateTabsHtml += getDateTabText(start, isActive, tabIndex);

                start.setDate(start.getDate() + 1);
                start.setHours(0, 0, 0, 0);
                tabIndex++;
            }

            page.querySelector('.emby-tabs-slider').innerHTML = dateTabsHtml;
            page.querySelector('.guideDateTabs').refresh();

            changeDate(page, date, layoutManager.tv);
        }

        function reloadPage(page) {

            showLoading();

            var apiClient = connectionManager.currentApiClient();

            apiClient.getLiveTvGuideInfo().then(function (guideInfo) {

                setDateRange(page, guideInfo);
            });
        }

        function setScrollEvents(view, enabled) {

            if (layoutManager.tv) {
                require(['scrollHelper'], function (scrollHelper) {

                    var fn = enabled ? 'on' : 'off';
                    scrollHelper.centerFocus[fn](view.querySelector('.guideVerticalScroller'), false);
                    scrollHelper.centerFocus[fn](view.querySelector('.programGrid'), true);
                });
            }
        }

        function onProgramGridFocus(e) {

            var programCell = dom.parentWithClass(e.target, 'programCell');

            if (!programCell) {
                return;
            }

            var focused = e.target;
            var id = focused.getAttribute('data-id');
            var item = items[id];

            if (item) {
                events.trigger(self, 'focus', [
                {
                    item: item
                }]);
            }
        }

        function onTimerCreated(e, apiClient, data) {

            var programId = data.ProgramId;
            // This could be null, not supported by all tv providers
            var newTimerId = data.Id;

            // find guide cells by program id, ensure timer icon
            var cells = options.element.querySelectorAll('.programCell[data-id="' + programId + '"]');
            for (var i = 0, length = cells.length; i < length; i++) {
                var cell = cells[i];

                var icon = cell.querySelector('.timerIcon');
                if (!icon) {
                    cell.insertAdjacentHTML('beforeend', '<i class="timerIcon md-icon programIcon">&#xE061;</i>');
                }

                if (newTimerId) {
                    cell.setAttribute('data-timerid', newTimerId);
                }
            }
        }

        function onSeriesTimerCreated(e, apiClient, data) {
        }

        function onTimerCancelled(e, apiClient, data) {
            var id = data.Id;
            // find guide cells by timer id, remove timer icon
            var cells = options.element.querySelectorAll('.programCell[data-timerid="' + id + '"]');
            for (var i = 0, length = cells.length; i < length; i++) {
                var cell = cells[i];
                var icon = cell.querySelector('.timerIcon');
                if (icon) {
                    icon.parentNode.removeChild(icon);
                }
                cell.removeAttribute('data-timerid');
            }
        }

        function onSeriesTimerCancelled(e, apiClient, data) {
            var id = data.Id;
            // find guide cells by timer id, remove timer icon
            var cells = options.element.querySelectorAll('.programCell[data-seriestimerid="' + id + '"]');
            for (var i = 0, length = cells.length; i < length; i++) {
                var cell = cells[i];
                var icon = cell.querySelector('.seriesTimerIcon');
                if (icon) {
                    icon.parentNode.removeChild(icon);
                }
                cell.removeAttribute('data-seriestimerid');
            }
        }

        require(['text!./tvguide.template.html'], function (template) {
            var context = options.element;
            context.innerHTML = globalize.translateDocument(template, 'sharedcomponents');

            if (layoutManager.desktop) {
                var guideScrollers = context.querySelectorAll('.guideScroller');
                for (var i = 0, length = guideScrollers.length; i < length; i++) {
                    guideScrollers[i].classList.add('darkScroller');
                }
            }

            var programGrid = context.querySelector('.programGrid');
            var timeslotHeaders = context.querySelector('.timeslotHeaders');

            programGrid.addEventListener('focus', onProgramGridFocus, true);

            if (browser.iOS || browser.osx) {
                context.querySelector('.channelsContainer').classList.add('noRubberBanding');

                var programGridContainer = context.querySelector('.programGridContainer');

                programGridContainer.classList.add('noRubberBanding');
                programGridContainer.classList.remove('smoothScrollX');
                programGridContainer.classList.add('hiddenScrollX');
            }

            dom.addEventListener(programGrid, 'scroll', function (e) {
                onProgramGridScroll(context, this, timeslotHeaders);
            }, {
                passive: true
            });

            dom.addEventListener(timeslotHeaders, 'scroll', function () {
                onTimeslotHeadersScroll(context, this, programGrid);
            }, {
                passive: true
            });

            context.querySelector('.btnUnlockGuide').addEventListener('click', function () {
                currentStartIndex = 0;
                reloadPage(context);
                restartAutoRefresh();
            });

            context.querySelector('.btnNextPage').addEventListener('click', function () {
                currentStartIndex += currentChannelLimit;
                reloadPage(context);
                restartAutoRefresh();
            });

            context.querySelector('.btnPreviousPage').addEventListener('click', function () {
                currentStartIndex = Math.max(currentStartIndex - currentChannelLimit, 0);
                reloadPage(context);
                restartAutoRefresh();
            });

            context.querySelector('.btnGuideViewSettings').addEventListener('click', function () {
                showViewSettings(self);
                restartAutoRefresh();
            });

            context.querySelector('.guideDateTabs').addEventListener('tabchange', function (e) {

                var tabButton = e.target.querySelectorAll('.guide-date-tab-button')[parseInt(e.detail.selectedTabIndex)];
                if (tabButton) {
                    var date = new Date();
                    date.setTime(parseInt(tabButton.getAttribute('data-date')));
                    changeDate(context, date, false);
                }
            });

            context.classList.add('tvguide');

            setScrollEvents(context, true);
            itemShortcuts.on(context);

            events.trigger(self, 'load');

            events.on(serverNotifications, 'TimerCreated', onTimerCreated);
            events.on(serverNotifications, 'SeriesTimerCreated', onSeriesTimerCreated);
            events.on(serverNotifications, 'TimerCancelled', onTimerCancelled);
            events.on(serverNotifications, 'SeriesTimerCancelled', onSeriesTimerCancelled);

            self.refresh();
        });
    }

    return Guide;
});