/* View: Stats */

var products = null;
var products_realtime_chart = null;
var products_url = '/api/products/';
var products_stat_url = '/api/products/group_by_user';

var order_base_url = '/stats/orders/{group}/';
var products_realtime_url = '/stats/orders/products_realtime';

function productFormatter() {
    return '<b>'+ this.point.name +'</b>: '+ Highcharts.numberFormat(this.percentage, 1) +' %';
}
function parse_products_realtime_data(data, chart) {
    for (var product in data.products) {
        if (chart.get(product) === null) {
            chart.addSeries({
                data: [],
                id: product,
                name: product
            });
        }

        var series = chart.get(product);
        _.each(data.products[product], function(point) {
            if (chart.get(point[0]) === null) {
                series.addPoint({
                    id: point[0],
                    x: point[0],
                    y: point[1]
                });
            }
        });
    }
}

function get_products_realtime_data() {
    var that = this;
    $.ajax( {
        url: products_realtime_url,
        dataType: "json",
        success: function (data) {
            parse_products_realtime_data(data, products_realtime_chart);

            setTimeout(function () {
                get_products_realtime_data();
            }, 15000);
        },
        cache: false
    });
}

function renderProductCharts(products) {
    for(var i in products) {
        var render_to = 'product_chart' + products[i].id;
        var series_data = products[i].counts;
        series_data = _.map(series_data, function (el) { return [el.full_name, el.amount_total]; });

        new Highcharts.Chart({
            chart: {
                renderTo: render_to,
                plotBackgroundColor: null,
                plotBorderWidth: null,
                plotShadow: false
            },
            title: {
                text: products[i].name
            },
            tooltip: {
                formatter: productFormatter
            },
            plotOptions: {
                pie: {
                    allowPointSelect: true,
                    cursor: 'pointer',
                    dataLabels: {
                        enabled: true,
                        color: '#000000',
                        connectorColor: '#000000',
                        formatter: function() {
                            return '<b>'+ this.point.name +'</b>: ' + this.y;
                        }
                    }
                }
            },
            series: [{
                type: 'pie',
                name: 'Orders',
                data: series_data
            }]
        });
    }
}

var orderFormatters = {
    hourly: function() {
        return this.value + ":00";
    },
    daily: function() {
        var days = {0: 'Mandag', 1: 'Tirsdag', 2: 'Onsdag', 3: 'Torsdag', 4: 'Fredag', 5: 'Lørdag', 6: 'Søndag'};
        return days[this.value];
    },
    monthly: function() {
        var months = {
            1: 'Januar', 2: 'Februar', 3: 'Mars', 4: 'April', 5: 'Mai', 6: 'Juni', 7: 'Juli',
            8: 'August', 9: 'September', 10: 'Oktober', 11: 'November', 12: 'Desember'};
        return months[this.value];
    },
    yearly: function() {
        return this.value;
    }
};

function renderOrdersGroupedChart(data) {
    var grouping = data.grouping;
    var render_to = 'order_chart_' + grouping;

    new Highcharts.Chart({
        chart: {
            renderTo: render_to,
            type: 'column'
        },
        title: {
            text: 'Ordre - ' + grouping
        },
        tooltip: {
            formatter: function() {
                return this.y + " stk";
            }
        },
        yAxis: {
            title: {
                text: 'Ordre'
            }
        },
        xAxis: {
            title: {
                text: 'Tid'
            },
            labels: {
                formatter: orderFormatters[grouping]
            }
        },
        plotOptions: {
            column: {
                minPointLength: 3,
                colorByPoint: true
            },
            series: {
                groupPadding: 0,
                pointPadding: 0.05
            }
        },
        series: [{
            name: 'Ordre',
            data: data.orders
        }]
    });
}

$(document).ready(function() {
    if( $("#stats").length > 0) {
        /* TODO select data element with index 0 of each pie-chart */

        /* Products */
        $.getJSON(products_stat_url, function(data) {
            products = data;
            renderProductCharts(data);
        });

        /* Orders, grouped */
        $('[data-group]').each(function () {
            var url = order_base_url.replace('{group}', $(this).data('group'));
            $.getJSON(url, renderOrdersGroupedChart);
        });

        /* Realtime purchases */
        products_realtime_chart = new Highcharts.Chart({
            chart: {
                renderTo: 'products_realtime_chart'
            },
            title: {
                text: "Produkter solgt over tid"
            },
            xAxis: {
                type: "datetime"
            },
            yAxis: {
                title: {
                    text: "Antall solgt"
                }
            },
            plotOptions: {
                series: {
                    marker: {
                        radius: 3
                    }
                }
            },
            series: {}
        });

        get_products_realtime_data();
    }
 });