(function ($, w, undefined) {
    if (w.footable == undefined || w.footable == null)
        throw new Error('Please check and make sure footable.js is included in the page and is loaded prior to this script.');

    var defaults = {
        sort: true,
        sorters: {
            alpha: function (a, b) {
                if (a == b) return 0;
                if (a < b) return -1;
                return 1;
            },
            numeric: function (a, b) {
                return a - b;
            }
        },
        parsers: {
            numeric: function (cell) {
                var val = $(cell).data('value') || $(cell).text().replace(/[^0-9.-]/g, '');
                val = parseFloat(val);
                if (isNaN(val)) val = 0;
                return val;
            }
        },
        classes: {
            sort: {
                sortable: 'footable-sortable',
                sorted: 'footable-sorted',
                descending: 'footable-sorted-desc',
                indicator: 'footable-sort-indicator'
            }
        }
    };

    function Sortable() {
        var p = this;
        p.name = 'Footable Sortable';
        p.init = function (ft) {
            if (ft.options.sort == true) {
                $(ft.table).bind({
                    'footable_initialized': function (e) {
                        var cls = ft.options.classes.sort, column;

                        var $table = $(e.ft.table), $tbody = $table.find('> tbody'), $th;

                        $table.find('> thead > tr:last-child > th, > thead > tr:last-child > td').each(function (ec) {
                            $th = $(this), column = e.ft.columns[$th.index()];
                            if (column.sort.ignore != true) {
                                $th.addClass(cls.sortable);
                                $('<span />').addClass(cls.indicator).appendTo($th);
                            }
                        });

                        $table.find('> thead > tr:last-child > th.' + cls.sortable + ', > thead > tr:last-child > td.' + cls.sortable).click(function (ec) {
                            $th = $(this), column = e.ft.columns[$th.index()];
                            if (column.sort.ignore == true) return true;
                            ec.preventDefault();

                            $table.find('> thead > tr:last-child > th, > thead > tr:last-child > td').not($th).removeClass(cls.sorted + ' ' + cls.descending);

                            if ($th.hasClass(cls.sorted)) {
                                p.reverse(e.ft, $tbody);
                                $th.removeClass(cls.sorted).addClass(cls.descending);
                            } else if ($th.hasClass(cls.descending)) {
                                p.reverse(e.ft, $tbody);
                                $th.removeClass(cls.descending).addClass(cls.sorted);
                            } else {
                                p.sort(e.ft, $tbody, column);
                                $th.removeClass(cls.descending).addClass(cls.sorted);
                            }
                            e.ft.bindToggleSelectors();
                            e.ft.raise('footable_sorted', {column: column});
                            return false;
                        });

                        var didSomeSorting = false;
                        for (var c in e.ft.columns) {
                            column = e.ft.columns[c];
                            if (column.sort.initial) {
                                p.sort(e.ft, $tbody, column);
                                didSomeSorting = true;
                                $th = $table.find('> thead > tr:last-child > th:eq(' + c + '), > thead > tr:last-child > td:eq(' + c + ')');

                                if (column.sort.initial == 'descending') {
                                    p.reverse(e.ft, $tbody);
                                    $th.addClass(cls.descending);
                                } else {
                                    $th.addClass(cls.sorted);
                                }

                                break;
                            } else if (column.sort.ignore != true) {

                            }
                        }
                        if (didSomeSorting) {
                            e.ft.bindToggleSelectors();
                        }
                    },
                    'footable_column_data': function (e) {
                        var $th = $(e.column.th);
                        e.column.data.sort = e.column.data.sort || {};
                        e.column.data.sort.initial = $th.data('sort-initial') || false;
                        e.column.data.sort.ignore = $th.data('sort-ignore') || false;
                        e.column.data.sort.selector = $th.data('sort-selector') || null;

                        var match = $th.data('sort-match') || 0;
                        if (match >= e.column.data.matches.length) match = 0;
                        e.column.data.sort.match = e.column.data.matches[match];
                    }
                });
            }
        };

        p.rows = function (ft, tbody, column) {
            var rows = [];
            tbody.find('> tr').each(function () {
                var $row = $(this), $next = null;
                if ($row.hasClass('footable-row-detail')) return true;
                if ($row.next().hasClass('footable-row-detail')) {
                    $next = $row.next().get(0);
                }
                var row = {'row': $row, 'detail': $next};
                if (column != undefined) {
                    row.value = ft.parse(this.cells[column.sort.match], column);
                }
                rows.push(row);
                return true;
            }).detach();
            return rows;
        };

        p.sort = function (ft, tbody, column) {
            var rows = p.rows(ft, tbody, column);
            var sorter = ft.options.sorters[column.type] || ft.options.sorters.alpha;
            rows.sort(function (a, b) {
                return sorter(a.value, b.value);
            });
            for (var j = 0; j < rows.length; j++) {
                tbody.append(rows[j].row);
                if (rows[j].detail != null) {
                    tbody.append(rows[j].detail);
                }
            }
        };

        p.reverse = function (ft, tbody) {
            var rows = p.rows(ft, tbody);
            for (var i = rows.length - 1; i >= 0; i--) {
                tbody.append(rows[i].row);
                if (rows[i].detail != null) {
                    tbody.append(rows[i].detail);
                }
            }
        };
    }

    ;

    w.footable.plugins.register(new Sortable(), defaults);

})(jQuery, window);