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

legenddistanceAlliance['OneWorld'] = 402752;
legenddistanceAlliance['Star Alliance'] = 26652;
legenddistanceAlliance['SkyTeam'] = 91097;
legenddistanceAlliance['No Alliance'] = 54896;
legenddistanceAirline['Iberia'] = 3096;
legenddistanceAirline['American Airlines'] = 45615;
legenddistanceAirline['EasyJet'] = 4214;
legenddistanceAirline['KLM Royal Dutch Airlines'] = 416;
legenddistanceAirline['British Airways'] = 341256;
legenddistanceAirline['Euromanx'] = 792;
legenddistanceAirline['Eos Airlines'] = 13872;
legenddistanceAirline['Lufthansa'] = 12451;
legenddistanceAirline['Air Tahiti Nui'] = 8184;
legenddistanceAirline['Air Tahiti'] = 322;
legenddistanceAirline['TWA'] = 11930;
legenddistanceAirline['Swiss'] = 2832;
legenddistanceAirline['Virgin America'] = 413;
legenddistanceAirline['Ryanair'] = 3486;
legenddistanceAirline['Alaska Airlines'] = 865;
legenddistanceAirline['Delta'] = 5385;
legenddistanceAirline['Virgin Atlantic'] = 85296;
legenddistanceAirline['United Airlines'] = 11369;
legenddistanceAirline['Norwegian Air International'] = 6471;
legenddistanceAirline['Easyjet'] = 2808;
legenddistanceAirline['IcelandAir'] = 2404;
legenddistanceAirline['Japan Airlines'] = 11920;
legenddistanceAirline['OneWorld'] = 402752;
legenddistanceAirline['Star Alliance'] = 26652;
legenddistanceAirline['SkyTeam'] = 91097;
legenddistanceAirline['No Alliance'] = 54896;


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

        var colors = Highcharts.getOptions().colors,


            categories = ['OneWorld','Star Alliance','SkyTeam','No Alliance'],
            name = 'Carriers',
            data = [{
					y: 70,
					color: colors[0],
					drilldown: {
						name: 'OneWorld (402752)',
						categories: ['American Airlines','British Airways','Japan Airlines','Others'],
						data: [7.9,59.3,2.1,0.7],
						color: colors[0]
					}
				} ,{
					y: 4.6,
					color: colors[1],
					drilldown: {
						name: 'Star Alliance (26652)',
						categories: ['Lufthansa','United Airlines','Others'],
						data: [2.2,2,0.5],
						color: colors[1]
					}
				} ,{
					y: 15.8,
					color: colors[2],
					drilldown: {
						name: 'SkyTeam (91097)',
						categories: ['Virgin Atlantic','Others'],
						data: [14.8,1],
						color: colors[2]
					}
				} ,{
					y: 9.5,
					color: colors[3],
					drilldown: {
						name: 'No Alliance (54896)',
						categories: ['Eos Airlines','Air Tahiti Nui','TWA','Norwegian Air International','Others'],
						data: [2.4,1.4,2.1,1.1,2.5],
						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 "";
	}
}