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

legenddistanceAlliance['OneWorld'] = 331136;
legenddistanceAlliance['Star Alliance'] = 97103;
legenddistanceAlliance['SkyTeam'] = 46702;
legenddistanceAlliance['No Alliance'] = 102764;
legenddistanceAirline['Brussels Airlines'] = 61269;
legenddistanceAirline['Martinair'] = 9250;
legenddistanceAirline['Sabena'] = 57122;
legenddistanceAirline['American Airlines'] = 53425;
legenddistanceAirline['Delta'] = 34434;
legenddistanceAirline['British Airways'] = 228267;
legenddistanceAirline['US Airways'] = 7765;
legenddistanceAirline['BMI British Midland'] = 1010;
legenddistanceAirline['Aer Lingus'] = 4462;
legenddistanceAirline['Hawaiian Airlines'] = 526;
legenddistanceAirline['Singapore Airlines'] = 8124;
legenddistanceAirline['Cathay Pacific'] = 13577;
legenddistanceAirline['Lufthansa'] = 13858;
legenddistanceAirline['Iberia'] = 4824;
legenddistanceAirline['VLM'] = 392;
legenddistanceAirline['Qantas'] = 23278;
legenddistanceAirline['TWA'] = 7533;
legenddistanceAirline['China Eastern'] = 579;
legenddistanceAirline['Hainan Airlines'] = 579;
legenddistanceAirline['Unknown'] = 94;
legenddistanceAirline['Eurostar'] = 2486;
legenddistanceAirline['Eos Airlines'] = 6936;
legenddistanceAirline['Alitalia'] = 243;
legenddistanceAirline['Openskies'] = 7280;
legenddistanceAirline['Thalys High Speed Rail'] = 760;
legenddistanceAirline['Austrian Airlines'] = 576;
legenddistanceAirline['Swiss'] = 10524;
legenddistanceAirline['Air Malta'] = 2302;
legenddistanceAirline['Royal Air Maroc'] = 2712;
legenddistanceAirline['United Airlines'] = 1742;
legenddistanceAirline['China Airlines'] = 11446;
legenddistanceAirline['EasyJet'] = 330;
legenddistanceAirline['OneWorld'] = 331136;
legenddistanceAirline['Star Alliance'] = 97103;
legenddistanceAirline['SkyTeam'] = 46702;
legenddistanceAirline['No Alliance'] = 102764;


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

        var colors = Highcharts.getOptions().colors,


            categories = ['OneWorld','Star Alliance','SkyTeam','No Alliance'],
            name = 'Carriers',
            data = [{
					y: 57.3,
					color: colors[0],
					drilldown: {
						name: 'OneWorld (331136)',
						categories: ['American Airlines','British Airways','US Airways','Cathay Pacific','Qantas','Others'],
						data: [9.2,39.5,1.3,2.4,4,0.8],
						color: colors[0]
					}
				} ,{
					y: 16.8,
					color: colors[1],
					drilldown: {
						name: 'Star Alliance (97103)',
						categories: ['Brussels Airlines','Singapore Airlines','Lufthansa','Swiss','Others'],
						data: [10.6,1.4,2.4,1.8,0.6],
						color: colors[1]
					}
				} ,{
					y: 8.1,
					color: colors[2],
					drilldown: {
						name: 'SkyTeam (46702)',
						categories: ['Delta','China Airlines','Others'],
						data: [6,2,0.1],
						color: colors[2]
					}
				} ,{
					y: 17.8,
					color: colors[3],
					drilldown: {
						name: 'No Alliance (102764)',
						categories: ['Martinair','Sabena','TWA','Eos Airlines','Openskies','Others'],
						data: [1.6,9.9,1.3,1.2,1.3,2.6],
						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 "";
	}
}