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

legenddistanceAlliance['OneWorld'] = 495840;
legenddistanceAlliance['Star Alliance'] = 24277;
legenddistanceAlliance['SkyTeam'] = 4076;
legenddistanceAlliance['No Alliance'] = 132226;
legenddistanceAirline['British Airways'] = 306890;
legenddistanceAirline['Iberia'] = 113878;
legenddistanceAirline['EasyJet'] = 61361;
legenddistanceAirline['Clickair'] = 1351;
legenddistanceAirline['SAS'] = 1128;
legenddistanceAirline['BMI British Midland'] = 4578;
legenddistanceAirline['Binter Canarias'] = 816;
legenddistanceAirline['Air Europa'] = 2192;
legenddistanceAirline['EasyJet'] = 2540;
legenddistanceAirline['Ryanair'] = 28051;
legenddistanceAirline['BWIA West Indies'] = 486;
legenddistanceAirline['American Airlines'] = 27300;
legenddistanceAirline['Avianca'] = 2166;
legenddistanceAirline['Spanair'] = 3018;
legenddistanceAirline['Cathay Pacific'] = 26322;
legenddistanceAirline['Spirit Airlines'] = 707;
legenddistanceAirline['LATAM Chile'] = 10734;
legenddistanceAirline['Dutch Antilles Express'] = 732;
legenddistanceAirline['LIAT'] = 562;
legenddistanceAirline['Spicejet'] = 263;
legenddistanceAirline['Air India'] = 263;
legenddistanceAirline['Sri Lankan Airlines'] = 2432;
legenddistanceAirline['Thomson Airways'] = 10894;
legenddistanceAirline['Vueling'] = 1042;
legenddistanceAirline['United Airlines'] = 3126;
legenddistanceAirline['Easyjet'] = 20537;
legenddistanceAirline['Air Asia'] = 731;
legenddistanceAirline['Malaysia Airlines'] = 5464;
legenddistanceAirline['Turkish Airlines'] = 3358;
legenddistanceAirline['Alaska Airlines'] = 127;
legenddistanceAirline['Norwegian Air Shuttle'] = 1106;
legenddistanceAirline['Air Berlin'] = 2693;
legenddistanceAirline['JetBlue'] = 413;
legenddistanceAirline['Zoom'] = 317;
legenddistanceAirline['Swiss'] = 3776;
legenddistanceAirline['Hahn Air'] = 317;
legenddistanceAirline['Singapore Airlines'] = 2864;
legenddistanceAirline['Vietnam Airlines'] = 1666;
legenddistanceAirline['AeroMexico'] = 218;
legenddistanceAirline['OneWorld'] = 495840;
legenddistanceAirline['Star Alliance'] = 24277;
legenddistanceAirline['SkyTeam'] = 4076;
legenddistanceAirline['No Alliance'] = 132226;


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

        var colors = Highcharts.getOptions().colors,


            categories = ['OneWorld','Star Alliance','SkyTeam','No Alliance'],
            name = 'Carriers',
            data = [{
					y: 75.5,
					color: colors[0],
					drilldown: {
						name: 'OneWorld (495840)',
						categories: ['British Airways','Iberia','American Airlines','Cathay Pacific','LATAM Chile','Others'],
						data: [46.8,17.3,4.2,4,1.6,1.6],
						color: colors[0]
					}
				} ,{
					y: 3.7,
					color: colors[1],
					drilldown: {
						name: 'Star Alliance (24277)',
						categories: ['Others'],
						data: [3.7],
						color: colors[1]
					}
				} ,{
					y: 0.6,
					color: colors[2],
					drilldown: {
						name: 'SkyTeam (4076)',
						categories: ['Others'],
						data: [0.6],
						color: colors[2]
					}
				} ,{
					y: 20.1,
					color: colors[3],
					drilldown: {
						name: 'No Alliance (132226)',
						categories: ['EasyJet','Ryanair','Thomson Airways','Easyjet','Others'],
						data: [9.3,4.3,1.7,3.1,1.7],
						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 "";
	}
}