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

legenddistanceAlliance['OneWorld'] = 76200;
legenddistanceAlliance['Star Alliance'] = 85362;
legenddistanceAlliance['SkyTeam'] = 18157;
legenddistanceAlliance['No Alliance'] = 39544;
legenddistanceAirline['Singapore Airlines'] = 23832;
legenddistanceAirline['Delta'] = 6664;
legenddistanceAirline['Swiss'] = 21993;
legenddistanceAirline['Lufthansa'] = 21324;
legenddistanceAirline['Turkish Airlines'] = 3314;
legenddistanceAirline['American Airlines'] = 8498;
legenddistanceAirline['BMI British Midland'] = 2047;
legenddistanceAirline['US Airways'] = 5873;
legenddistanceAirline['Virgin America'] = 674;
legenddistanceAirline['United Airlines'] = 674;
legenddistanceAirline['Etihad'] = 7058;
legenddistanceAirline['FlyBe'] = 3816;
legenddistanceAirline['British Airways'] = 3598;
legenddistanceAirline['EasyJet'] = 4099;
legenddistanceAirline['TAP Portugal'] = 2222;
legenddistanceAirline['Air France'] = 1026;
legenddistanceAirline['KLM Royal Dutch Airlines'] = 10467;
legenddistanceAirline['Thomson Airways'] = 17836;
legenddistanceAirline['Brussels Airlines'] = 1761;
legenddistanceAirline['Austrian Airlines'] = 220;
legenddistanceAirline['Iberia'] = 30607;
legenddistanceAirline['SAS'] = 7553;
legenddistanceAirline['Ryanair'] = 992;
legenddistanceAirline['Air Baltic'] = 1225;
legenddistanceAirline['Estonian Air'] = 243;
legenddistanceAirline['Cimber Air'] = 422;
legenddistanceAirline['Air Malta'] = 2910;
legenddistanceAirline['Qatar Airways'] = 23944;
legenddistanceAirline['Cathay Pacific'] = 1840;
legenddistanceAirline['Japan Airlines'] = 1840;
legenddistanceAirline['Norwegian Air Shuttle'] = 691;
legenddistanceAirline['OneWorld'] = 76200;
legenddistanceAirline['Star Alliance'] = 85362;
legenddistanceAirline['SkyTeam'] = 18157;
legenddistanceAirline['No Alliance'] = 39544;


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

        var colors = Highcharts.getOptions().colors,


            categories = ['OneWorld','Star Alliance','SkyTeam','No Alliance'],
            name = 'Carriers',
            data = [{
					y: 34.8,
					color: colors[0],
					drilldown: {
						name: 'OneWorld (76200)',
						categories: ['American Airlines','US Airways','British Airways','Iberia','Qatar Airways','Others'],
						data: [3.9,2.7,1.6,14,10.9,1.6],
						color: colors[0]
					}
				} ,{
					y: 38.9,
					color: colors[1],
					drilldown: {
						name: 'Star Alliance (85362)',
						categories: ['Singapore Airlines','Swiss','Lufthansa','Turkish Airlines','TAP Portugal','SAS','Others'],
						data: [10.9,10,9.7,1.5,1,3.4,2.3],
						color: colors[1]
					}
				} ,{
					y: 8.3,
					color: colors[2],
					drilldown: {
						name: 'SkyTeam (18157)',
						categories: ['Delta','KLM Royal Dutch Airlines','Others'],
						data: [3,4.8,0.5],
						color: colors[2]
					}
				} ,{
					y: 18,
					color: colors[3],
					drilldown: {
						name: 'No Alliance (39544)',
						categories: ['Etihad','FlyBe','EasyJet','Thomson Airways','Air Malta','Others'],
						data: [3.2,1.7,1.9,8.1,1.3,1.8],
						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 "";
	}
}