var legenddistanceAirline = {};
var legenddistanceAlliance = {};

legenddistanceAlliance['OneWorld'] = 62835;
legenddistanceAlliance['Star Alliance'] = 76483;
legenddistanceAlliance['SkyTeam'] = 24789;
legenddistanceAlliance['No Alliance'] = 23215;
legenddistanceAirline['Korean Air'] = 4542;
legenddistanceAirline['Singapore Airlines'] = 19973;
legenddistanceAirline['American Airlines'] = 50822;
legenddistanceAirline['United Airlines'] = 38421;
legenddistanceAirline['Unknown'] = 2471;
legenddistanceAirline['Etihad'] = 8497;
legenddistanceAirline['Air India'] = 143;
legenddistanceAirline['Jet Airways'] = 566;
legenddistanceAirline['Virgin America'] = 1928;
legenddistanceAirline['Delta'] = 2552;
legenddistanceAirline['Alaska Airlines'] = 4765;
legenddistanceAirline['Air Canada'] = 4942;
legenddistanceAirline['JetBlue'] = 2469;
legenddistanceAirline['Air France'] = 17695;
legenddistanceAirline['Lufthansa'] = 13004;
legenddistanceAirline['Garuda Indonesia'] = 7284;
legenddistanceAirline['Cathay Pacific'] = 7248;
legenddistanceAirline['OneWorld'] = 62835;
legenddistanceAirline['Star Alliance'] = 76483;
legenddistanceAirline['SkyTeam'] = 24789;
legenddistanceAirline['No Alliance'] = 23215;


$(function () {
    var chart;
    $(document).ready(function() {

        var colors = Highcharts.getOptions().colors,


            categories = ['OneWorld','Star Alliance','SkyTeam','No Alliance'],
            name = 'Carriers',
            data = [{
					y: 33.5,
					color: colors[0],
					drilldown: {
						name: 'OneWorld (62835)',
						categories: ['American Airlines','Alaska Airlines','Cathay Pacific'],
						data: [27.1,2.5,3.9],
						color: colors[0]
					}
				} ,{
					y: 40.8,
					color: colors[1],
					drilldown: {
						name: 'Star Alliance (76483)',
						categories: ['Singapore Airlines','United Airlines','Air Canada','Lufthansa','Others'],
						data: [10.7,20.5,2.6,6.9,0.1],
						color: colors[1]
					}
				} ,{
					y: 13.2,
					color: colors[2],
					drilldown: {
						name: 'SkyTeam (24789)',
						categories: ['Korean Air','Delta','Air France'],
						data: [2.4,1.4,9.4],
						color: colors[2]
					}
				} ,{
					y: 12.4,
					color: colors[3],
					drilldown: {
						name: 'No Alliance (23215)',
						categories: ['Unknown','Etihad','Virgin America','JetBlue','Garuda Indonesia','Others'],
						data: [1.3,4.5,1,1.3,3.9,0.3],
						color: colors[3]
					}
				} 

		];


        // Build the data arrays
        var allianceData = [];
        var carrierData = [];
        for (var i = 0; i < data.length; i++) {

            // add browser data
            allianceData.push({
                name: categories[i],
                y: data[i].y,
                color: data[i].color
            });

            // add version data
            for (var j = 0; j < data[i].drilldown.data.length; j++) {
                var brightness = 0.2 - (j / data[i].drilldown.data.length) / 5 ;
                carrierData.push({
                    name: data[i].drilldown.categories[j],
                    y: data[i].drilldown.data[j],
                    color: Highcharts.Color(data[i].color).brighten(brightness).get()
                });
            }
        }

        // Create the chart
        chart = new Highcharts.Chart({
            chart: {
                renderTo: 'airline_distance',
                type: 'pie'
            },
            title: {
                text: ''
            },
            yAxis: {
                title: {
                    text: ''
                }
            },
            plotOptions: {
                pie: {
                    allowPointSelect: true,
                    cursor: 'pointer',
                    dataLabels: {
                        enabled: true
                    },
                    showInLegend: false
                }
            },
            tooltip: {
        	    valueSuffix: '%'
            },
            series: [{
                name: 'proportion',
                data: allianceData,
                size: '80%',
                dataLabels: {
                    formatter: function() {
                        return this.y > 5 ? this.point.name : null;
                    },
                    color: 'white',
                    distance: -75
                }
            }, {
                name: 'proportion',
                data: carrierData,
                innerSize: '80%',
                dataLabels: {
                    formatter: function() {
                        // display only if larger than 1
                        return this.y > 1 ? '<b>'+ this.point.name +':</b> '+ this.y +
                        	'%' + getCountdistance(this.point.name) : null;
                    }
                }
            }]
        });
    });

});

function getCountdistance(airline)
{
	if(legenddistanceAirline[airline])
	{
		return " (" + parseInt(legenddistanceAirline[airline]).toLocaleString() + ")";
	}
	else
	{
		return "";
	}
}