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

legenddistanceAlliance['OneWorld'] = 59522;
legenddistanceAlliance['Star Alliance'] = 191145;
legenddistanceAlliance['SkyTeam'] = 0;
legenddistanceAlliance['No Alliance'] = 6962;
legenddistanceAirline['Swiss'] = 24497;
legenddistanceAirline['Nationwide Airlines'] = 788;
legenddistanceAirline['Lufthansa'] = 82646;
legenddistanceAirline['Singapore Airlines'] = 54809;
legenddistanceAirline['United Airlines'] = 12293;
legenddistanceAirline['Mexicana'] = 1818;
legenddistanceAirline['South African Airways'] = 9194;
legenddistanceAirline['Austrian Airlines'] = 1082;
legenddistanceAirline['British Airways'] = 30193;
legenddistanceAirline['Emirates'] = 6174;
legenddistanceAirline['Cathay Pacific'] = 14825;
legenddistanceAirline['Thai'] = 6394;
legenddistanceAirline['BMI British Midland'] = 230;
legenddistanceAirline['US Airways'] = 2600;
legenddistanceAirline['American Airlines'] = 10086;
legenddistanceAirline['OneWorld'] = 59522;
legenddistanceAirline['Star Alliance'] = 191145;
legenddistanceAirline['SkyTeam'] = 0;
legenddistanceAirline['No Alliance'] = 6962;


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

        var colors = Highcharts.getOptions().colors,


            categories = ['OneWorld','Star Alliance','No Alliance'],
            name = 'Carriers',
            data = [{
					y: 23.1,
					color: colors[0],
					drilldown: {
						name: 'OneWorld (59522)',
						categories: ['British Airways','Cathay Pacific','US Airways','American Airlines','Others'],
						data: [11.7,5.8,1,3.9,0.7],
						color: colors[0]
					}
				} ,{
					y: 74.2,
					color: colors[1],
					drilldown: {
						name: 'Star Alliance (191145)',
						categories: ['Swiss','Lufthansa','Singapore Airlines','United Airlines','South African Airways','Thai','Others'],
						data: [9.5,32.1,21.3,4.8,3.6,2.5,0.5],
						color: colors[1]
					}
				} ,{
					y: 2.7,
					color: colors[3],
					drilldown: {
						name: 'No Alliance (6962)',
						categories: ['Emirates','Others'],
						data: [2.4,0.3],
						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 "";
	}
}