(function ($, window, document) {

    var currentItem;

    function updateTabs(page, item) {

        var query = MetadataEditor.getEditQueryString(item);

        $('#btnEditMetadata', page).attr('href', 'edititemmetadata.html?' + query);
        $('#btnEditImages', page).attr('href', 'edititemimages.html?' + query);
    }

    function showLocalSubtitles(page, index) {

        Dashboard.showLoadingMsg();

        var popup = $('.popupSubtitleViewer', page).popup('open');
        $('.subtitleContent', page).html('');

        var url = 'Videos/' + currentItem.Id + '/Subtitles/' + index;

        $.get(ApiClient.getUrl(url)).done(function (result) {

            $('.subtitleContent', page).html(result);

            Dashboard.hideLoadingMsg();

            popup.popup('reposition', {});
        });
    }

    function showRemoteSubtitles(page, id) {

        Dashboard.showLoadingMsg();

        var popup = $('.popupSubtitleViewer', page).popup('open');
        $('.subtitleContent', page).html('\nLoading...\n\n\n');

        var url = 'Providers/Subtitles/Subtitles/' + id;

        $.get(ApiClient.getUrl(url)).done(function (result) {

            $('.subtitleContent', page).html(result);

            Dashboard.hideLoadingMsg();

            popup.popup('reposition', {});
        });
    }

    function downloadRemoteSubtitles(page, id) {

        var url = 'Items/' + currentItem.Id + '/RemoteSearch/Subtitles/' + id;

        $.ajax({

            type: "POST",
            url: ApiClient.getUrl(url)

        }).done(function () {

            Dashboard.alert('The download has been queued.');
        });
    }

    function deleteLocalSubtitle(page, index) {

        var msg = "Are you sure you wish to delete this subtitle file?";

        Dashboard.confirm(msg, "Confirm Deletion", function (result) {

            if (result) {

                Dashboard.showLoadingMsg();

                var url = 'Videos/' + currentItem.Id + '/Subtitles/' + index;

                $.ajax({

                    type: "DELETE",
                    url: ApiClient.getUrl(url)

                }).done(function () {

                    reload(page);
                });

            }
        });
    }

    function fillSubtitleList(page, item) {

        var html = '<ul data-role="listview" data-split-icon="delete"><li data-role="list-divider">Current Subtitles</li>';

        var streams = item.MediaStreams || [];

        html += streams.filter(function (s) {

            return s.Type == 'Subtitle';

        }).map(function (s) {

            var itemHtml = '<li><a class="btnViewSubtitles" href="#" data-index="' + s.Index + '">';

            itemHtml += '<p>' + (s.Language || 'Unknown language') + '</p>';

            if (s.IsDefault || s.IsForced) {

                var atts = [];

                if (s.IsDefault) {

                    atts.push('Default');
                }
                if (s.IsForced) {

                    atts.push('Forced');
                }

                itemHtml += '<p>' + atts.join(', ') + '</p>';
            }

            if (s.Path) {
                itemHtml += '<p>' + (s.Path) + '</p>';
            }

            itemHtml += '</a>';

            if (s.Path) {
                itemHtml += '<a href="#" data-icon="delete" class="btnDelete" data-index="' + s.Index + '">Delete</a>';
            } else {
                itemHtml += '<a href="#" data-icon="delete" style="display:none;" class="btnDelete" data-index="' + s.Index + '">Delete</a>';
            }

            itemHtml += '</li>';

            return itemHtml;
            
        }).join('');

        html += '</ul>';

        var elem = $('.subtitleList', page).html(html).trigger('create');

        $('.btnViewSubtitles', elem).on('click', function () {

            var index = this.getAttribute('data-index');

            showLocalSubtitles(page, index);

        });

        $('.btnDelete', elem).on('click', function () {

            var index = this.getAttribute('data-index');

            deleteLocalSubtitle(page, index);

        });
    }

    function fillLanguages(page, languages) {

        $('#selectLanguage', page).html(languages.map(function (l) {

            return '<option value="' + l.ThreeLetterISOLanguageName + '">' + l.DisplayName + '</option>';

        })).selectmenu('refresh');

        Dashboard.getCurrentUser().done(function (user) {

            var lang = user.Configuration.SubtitleLanguagePreference;

            if (lang) {
                $('#selectLanguage', page).val(lang).selectmenu('refresh');
            }
        });
    }

    function renderSearchResults(page, results) {

        var lastProvider = '';
        var html = '';

        if (!results.length) {

            $('.noSearchResults', page).show();
            $('.subtitleResults', page).html('');
            Dashboard.hideLoadingMsg();
            return;
        }

        $('.noSearchResults', page).hide();

        html += '<ul data-role="listview">';

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

            var result = results[i];

            var provider = result.ProviderName;

            if (provider != lastProvider) {
                html += '<li data-role="list-divider">' + provider + '<span class="ui-li-count ui-body-inherit">Rating / Downloads</span></li>';
                lastProvider = provider;
            }

            html += '<li><a class="btnViewSubtitle" href="#" data-subid="' + result.Id + '">';

            html += '<h3 style="font-size:14px;">' + (result.Name) + '</h3>';
            html += '<p>' + (result.Format) + '</p>';

            if (result.Comment) {
                html += '<p>' + (result.Comment) + '</p>';
            }

            html += '<div class="ui-li-count">' + (result.CommunityRating || 0) + ' / ' + (result.DownloadCount || 0) + '</div>';

            html += '</a>';

            html += '<a href="#" class="btnDownload" data-icon="plus" data-subid="' + result.Id + '">Download</a>';

            html += '</li>';
        }

        html += '</ul>';
        var elem = $('.subtitleResults', page).html(html).trigger('create');

        $('.btnViewSubtitle', elem).on('click', function () {

            var id = this.getAttribute('data-subid');
            showRemoteSubtitles(page, id);
        });

        $('.btnDownload', elem).on('click', function () {

            var id = this.getAttribute('data-subid');
            downloadRemoteSubtitles(page, id);
        });

        Dashboard.hideLoadingMsg();
    }

    function searchForSubtitles(page, language) {

        Dashboard.showLoadingMsg();

        var url = ApiClient.getUrl('Items/' + currentItem.Id + '/RemoteSearch/Subtitles/' + language);

        $.getJSON(url).done(function (results) {

            renderSearchResults(page, results);
        });
    }

    function reload(page) {

        $('.noSearchResults', page).hide();

        MetadataEditor.getItemPromise().done(function (item) {

            currentItem = item;

            LibraryBrowser.renderName(item, $('.itemName', page), true);

            updateTabs(page, item);

            fillSubtitleList(page, item);

            Dashboard.hideLoadingMsg();
        });
    }

    function onWebSocketMessageReceived(e, data) {

        var msg = data;

        if (msg.MessageType === "LibraryChanged") {

            if (msg.Data.ItemsUpdated.indexOf(currentItem.Id) != -1) {
                
                console.log('Item updated - reloading subtitles');
                reload($.mobile.activePage);
            }
        }
    }

    $(document).on('pageinit', "#editItemSubtitlesPage", function () {

        var page = this;

        $('.libraryTree', page).on('itemclicked', function (event, data) {

            if (data.itemType == "livetvservice") {
                return;
            }

            if (data.id != currentItem.Id) {

                MetadataEditor.currentItemId = data.id;
                MetadataEditor.currentItemName = data.itemName;
                MetadataEditor.currentItemType = data.itemType;
                //Dashboard.navigate('edititemmetadata.html?id=' + data.id);

                //$.mobile.urlHistory.ignoreNextHashChange = true;
                window.location.hash = 'editItemSubtitlesPage?id=' + data.id;

                reload(page);
            }
        });

    }).on('pagebeforeshow', "#editItemSubtitlesPage", function () {

        var page = this;

        $('.subtitleResults', page).empty();

        Dashboard.showLoadingMsg();

        reload(page);

        ApiClient.getCultures().done(function (languages) {

            fillLanguages(page, languages);
        });

        $(ApiClient).on("websocketmessage", onWebSocketMessageReceived);

    }).on('pagehide', "#editItemSubtitlesPage", function () {

        var page = this;

        currentItem = null;

        $(ApiClient).off("websocketmessage", onWebSocketMessageReceived);
    });

    window.EditItemSubtitlesPage = {

        onSearchSubmit: function () {

            var form = this;

            var lang = $('#selectLanguage', form).val();

            searchForSubtitles($(form).parents('.page'), lang);

            return false;
        }
    };

})(jQuery, window, document);