(function ($) {
    var current_tab = null;
    function refresh(e) {
        $('#line-chart-here').empty();
        $('#line-chart-legend').empty();
        var r = new Raphael('line-chart-here'),
            width = $('#line-chart-here').width(),
            height = $('#line-chart-here').height();
        $.ajax({
            method:     'GET',
            url:        'ajax.php/report/overview/graph',
            data:       $(this).serialize(),
            dataType:   'json',
            success:    function(json) {
                var times = [],
                    smtimes = Array.prototype.concat.apply([], json.times),
                    plots = [],
                    max = 0;

                // Convert the timestamp to number of whole days after the
                // unix epoch.
                for (key in smtimes) {
                    smtimes[key] = Math.floor(smtimes[key] / 86400);
                }
                for (key in json.events) {
                    e = json.events[key];
                    if (json.plots[e] === undefined) continue;
                    $('<span>').append(e)
                        .attr({'class':'label','style':'margin-left:0.5em'})
                        .appendTo($('#line-chart-legend'));
                    $('<br>').appendTo('#line-chart-legend');
                    times.push(smtimes);
                    plots.push(json.plots[e]);
                    // Keep track of max value from any plot
                    max = Math.max(max, Math.max.apply(Math, json.plots[e]));
                }
                m = r.linechart(20, 0, width - 70, height,
                    times, plots, { 
                    gutter: 20,
                    width: 1.6,
                    nostroke: false, 
                    shade: false,
                    axis: "0 0 1 1",
                    axisxstep: 8,
                    axisystep: Math.min(12, max),
                    symbol: "circle",
                    smooth: false
                }).hoverColumn(function () {
                    this.tags = r.set();
                    var slots = [];

                    for (var i = 0, ii = this.y.length; i < ii; i++) {
                        if (this.values[i] === 0) continue;
                        if (this.symbols[i].node.style.display == "none") continue;
                        var angle = 160;
                        for (var j = 0, jj = slots.length; j < jj; j++) {
                            if (slots[j][0] == this.x
                                    && Math.abs(slots[j][1] - this.y[i]) < 20) {
                                angle = 20;
                                break;
                            }
                        }
                        slots.push([this.x, this.y[i]]);
                        this.tags.push(r.tag(this.x, this.y[i],
                            this.values[i], angle,
                            10).insertBefore(this).attr([
                                { fill: '#eee' },
                                { fill: this.symbols[i].attr('fill') }]));
                    }
                }, function () {
                    this.tags && this.tags.remove();
                });
                // Change axis labels from Unix epoch
                $('tspan', $('#line-chart-here')).each(function(e) {
                    var text = this.firstChild.textContent;
                    if (parseInt(text) > 10000)
                        this.firstChild.textContent =
                            $.datepicker.formatDate('mm-dd-yy',
                            new Date(parseInt(text) * 86400000));
                });
                $('span.label').each(function(i, e) {
                    e = $(e);
                    e.click(function() {
                        e.toggleClass('disabled');
                        if (e.hasClass('disabled')) {
                            m.symbols[i].hide();
                            m.lines[i].hide();
                        } else {
                            m.symbols[i].show();
                            m.lines[i].show();
                        }
                    });
                });
                // Dear aspiring API writers, please consider making [easy]
                // things simpler than this...
                $('span.label', '#line-chart-legend').css(
                    'background-color', function(i) {
                        return Raphael.color(m.symbols[i][0].attr('fill')).hex; 
                });
            }
        });
        if (this.start) build_table.apply(this);
        return false;
    }
    $(function() { $('tabular-navigation').tab(); });

    // Add tabs for the tabular display
    $(function() {
        $.ajax({
            url:        'ajax.php/report/overview/table/groups',
            dataType:   'json',
            success:    function(json) {
                var first=true;
                for (key in json) {
                    $('#tabular-navigation')
                        .append($('<li>').attr(first ? {'class':'active'} : {})
                        .append($('<a>')
                            .click(build_table)
                            .attr({'table-group':key,'href':'#'})
                            .append(json[key])));
                    first=false;
                }
                build_table.apply($('#tabular-navigation li:first-child a')[0])
            }
        });
    });

    var start, stop;
    function build_table() {
        if (this.tagName == 'A') {
            current_tab = $(this).tab('show');
        }
        else if (this.start) {
            start = this.start.value || 'last month';
            stop = this.period.value || 'now';
        }

        if (!current_tab)
            current_tab = $('#tabular-navigation li:first-child a');

        var group = current_tab.attr('table-group');
        var pagesize = 25;
        getConfig().then(function(c) { if (c.page_size) pagesize = c.page_size; });
        $.ajax({
            method:     'GET',
            dataType:   'json',
            url:        'ajax.php/report/overview/table',
            data:       {group: group, start: start, period: stop},
            success:    function(json) {
                var q = $('<table>').attr({'class':'table table-condensed table-striped'}),
                    h = $('<tr>').appendTo($('<thead>').appendTo(q)),
                    max = [];
                for (var c in json.columns) {
                    h.append($('<th>').append(json.columns[c]));
                    max.push(0);
                }
                for (y in json.data) {
                    row = json.data[y];
                    for (x in row) {
                        max[x] = Math.max(max[x], parseFloat(row[x]||0));
                    }
                }
                for (var i in json.data) {
                    if (i % pagesize === 0)
                        b = $('<tbody>').attr({'page':i/pagesize+1}).addClass('hidden').appendTo(q);
                    row = json.data[i];
                    tr = $('<tr>').appendTo(b);
                    for (var j in row) {
                        if (j == 0) 
                            tr.append($('<th>').append(row[j]));
                        else {
                            val = parseFloat(row[j])||0;
                            color = 'black';
                            size = 0;
                            if (val && max[j] && json.data.length > 1) {
                                scale = val / max[j];
                                color = Raphael.hsb(
                                    Math.min((1 - scale) * .4, 1),
                                    .75, .75);
                                size = 16 * scale;
                            }
                            tr.append($('<td>')
                                .append($('<div>').append(
                                    $('<div>').css(val ? {
                                        'background-color': color,
                                        'width': size,
                                        'height': size,
                                        'top': 9 - (size / 2),
                                        'right': 10 - (size / 2)
                                    } : {})
                                    .append("&nbsp;")))
                                .append(row[j]));
                        }
                    }
                }
                if (json.data.length == 0) {
                    $('<tbody>').attr('page','1').append($('<tr>').append(
                        $('<td>').attr('colspan','8').append(
                            'No data for this timeframe found'))).appendTo(q);
                }
                $('tbody[page=1]', q).removeClass('hidden');
                $('#table-here').empty().append(q);

                // ----------------------> Pagination <---------------------
                function goabs(e) {
                    $('tbody', q).addClass('hidden');
                    if (e.target) {
                        page = e.target.text;
                        $('tbody[page='+page+']', q).removeClass('hidden');
                    } else {
                        e.removeClass('hidden');
                        page = e.attr('page')
                    }
                    return enable_next_prev(page);
                }
                function goprev() {
                    current = $('tbody:not(.hidden)', q).attr('page');
                    page = Math.max(1, parseInt(current) - 1);
                    return goabs($('tbody[page='+page+']', q));
                }
                function gonext() {
                    current = $('tbody:not(.hidden)', q).attr('page');
                    page = Math.min(Math.floor(json.data.length / pagesize) + 1,
                        parseInt(current) + 1);
                    return goabs($('tbody[page='+page+']', q));
                }
                function enable_next_prev(page) {
                    $('#table-here div.pagination li[page]').removeClass('active');
                    $('#table-here div.pagination li[page='+page+']').addClass('active');

                    if (page == 1)  $('#report-page-prev').addClass('disabled');
                    else            $('#report-page-prev').removeClass('disabled');

                    if (page == Math.floor(json.data.length / pagesize) + 1)
                                    $('#report-page-next').addClass('disabled');
                    else            $('#report-page-next').removeClass('disabled');
                    return false;
                }

                var p = $('<ul>')
                    .appendTo($('<div>').attr({'class':'pagination'})
                    .appendTo($('#table-here')));
                $('<a>').click(goprev).attr({'href':'#'})
                    .append('&laquo;').appendTo($('<li>').attr({'id':'report-page-prev'})
                    .appendTo(p));
                $('tbody', q).each(function() {
                    page = $(this).attr('page');
                    $('<a>').click(goabs).attr({'href':'#'}).append(page)
                        .appendTo($('<li>').attr({'page':page})
                        .appendTo(p));
                });
                $('<a>').click(gonext).attr({'href':'#'})
                    .append('&raquo;').appendTo($('<li>').attr({'id':'report-page-next'})
                    .appendTo(p));

                // ------------------------> Export <-----------------------
                $('<a>').attr({'href':'ajax.php/report/overview/table/export?group='
                        +group+'&start='+start+'&stop='+stop}).append('Export')
                    .addClass('no-pjax')
                    .appendTo($('<li>')
                    .appendTo(p));

                goprev();
            }
        });
        return false;
    }

    $(function() {
        var form = $('#timeframe-form');
        form.submit(refresh);
        //Trigger submit now...init.
        form.submit();
    });
})(window.jQuery);
