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

legenddistanceAlliance['OneWorld'] = 41439;
legenddistanceAlliance['Star Alliance'] = 110887;
legenddistanceAlliance['SkyTeam'] = 30274;
legenddistanceAlliance['No Alliance'] = 84639;
legenddistanceAirline['Ryanair'] = 27233;
legenddistanceAirline['FlyBe'] = 4731;
legenddistanceAirline['Lufthansa'] = 46294;
legenddistanceAirline['Emirates'] = 14238;
legenddistanceAirline['Eurostar'] = 1224;
legenddistanceAirline['Air France'] = 11462;
legenddistanceAirline['Air China'] = 23253;
legenddistanceAirline['British Airways'] = 33621;
legenddistanceAirline['Vueling'] = 1185;
legenddistanceAirline['Wizz Air'] = 2258;
legenddistanceAirline['Asiana Airlines'] = 584;
legenddistanceAirline['Norwegian Air Shuttle'] = 873;
legenddistanceAirline['Hainan Airlines'] = 9162;
legenddistanceAirline['IcelandAir'] = 1177;
legenddistanceAirline['China Southern'] = 2472;
legenddistanceAirline['BMI British Midland'] = 2410;
legenddistanceAirline['EasyJet'] = 6093;
legenddistanceAirline['Austrian Airlines'] = 19168;
legenddistanceAirline['Swiss'] = 9330;
legenddistanceAirline['China Eastern'] = 15195;
legenddistanceAirline['Bmibaby'] = 2360;
legenddistanceAirline['Thai'] = 7498;
legenddistanceAirline['Xiamen Airlines'] = 1145;
legenddistanceAirline['Air Astana'] = 5261;
legenddistanceAirline['Belavia'] = 417;
legenddistanceAirline['Wizz Air UK'] = 1025;
legenddistanceAirline['SAS'] = 2350;
legenddistanceAirline['Qatar Airways'] = 7818;
legenddistanceAirline['Hong Kong Express'] = 1803;
legenddistanceAirline['Ryanair UK'] = 1280;
legenddistanceAirline['EasyJet'] = 3495;
legenddistanceAirline['Air Asia'] = 579;
legenddistanceAirline['Thai Air Asia'] = 245;
legenddistanceAirline['OneWorld'] = 41439;
legenddistanceAirline['Star Alliance'] = 110887;
legenddistanceAirline['SkyTeam'] = 30274;
legenddistanceAirline['No Alliance'] = 84639;


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

        var colors = Highcharts.getOptions().colors,


            categories = ['OneWorld','Star Alliance','SkyTeam','No Alliance'],
            name = 'Carriers',
            data = [{
					y: 15.5,
					color: colors[0],
					drilldown: {
						name: 'OneWorld (41439)',
						categories: ['British Airways','Qatar Airways'],
						data: [12.6,2.9],
						color: colors[0]
					}
				} ,{
					y: 41.5,
					color: colors[1],
					drilldown: {
						name: 'Star Alliance (110887)',
						categories: ['Lufthansa','Air China','Austrian Airlines','Swiss','Thai','Others'],
						data: [17.3,8.7,7.2,3.5,2.8,2],
						color: colors[1]
					}
				} ,{
					y: 11.3,
					color: colors[2],
					drilldown: {
						name: 'SkyTeam (30274)',
						categories: ['Air France','China Eastern','Others'],
						data: [4.3,5.7,1.3],
						color: colors[2]
					}
				} ,{
					y: 31.7,
					color: colors[3],
					drilldown: {
						name: 'No Alliance (84639)',
						categories: ['Ryanair','FlyBe','Emirates','Hainan Airlines','EasyJet','Air Astana','EasyJet','Others'],
						data: [10.2,1.8,5.3,3.4,2.3,2,1.3,5.4],
						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 "";
	}
}