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

legenddistanceAlliance['OneWorld'] = 13960;
legenddistanceAlliance['Star Alliance'] = 26237;
legenddistanceAlliance['SkyTeam'] = 25218;
legenddistanceAlliance['No Alliance'] = 22468;
legenddistanceAirline['Thai Air Asia'] = 1242;
legenddistanceAirline['Tiger Airways'] = 2658;
legenddistanceAirline['Air France'] = 12520;
legenddistanceAirline['Lufthansa'] = 5806;
legenddistanceAirline['SAS'] = 2062;
legenddistanceAirline['Delta'] = 12026;
legenddistanceAirline['KLM Royal Dutch Airlines'] = 672;
legenddistanceAirline['Tuifly'] = 4082;
legenddistanceAirline['Emirates'] = 12116;
legenddistanceAirline['Thai'] = 5595;
legenddistanceAirline['Air Asia'] = 1516;
legenddistanceAirline['Thai Lion Air'] = 854;
legenddistanceAirline['Singapore Airlines'] = 12774;
legenddistanceAirline['Cathay Pacific'] = 6743;
legenddistanceAirline['Iberia'] = 1368;
legenddistanceAirline['American Airlines'] = 5443;
legenddistanceAirline['British Airways'] = 406;
legenddistanceAirline['OneWorld'] = 13960;
legenddistanceAirline['Star Alliance'] = 26237;
legenddistanceAirline['SkyTeam'] = 25218;
legenddistanceAirline['No Alliance'] = 22468;


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

        var colors = Highcharts.getOptions().colors,


            categories = ['OneWorld','Star Alliance','SkyTeam','No Alliance'],
            name = 'Carriers',
            data = [{
					y: 15.9,
					color: colors[0],
					drilldown: {
						name: 'OneWorld (13960)',
						categories: ['Cathay Pacific','Iberia','American Airlines','Others'],
						data: [7.7,1.6,6.2,0.5],
						color: colors[0]
					}
				} ,{
					y: 29.9,
					color: colors[1],
					drilldown: {
						name: 'Star Alliance (26237)',
						categories: ['Lufthansa','SAS','Thai','Singapore Airlines'],
						data: [6.6,2.3,6.4,14.5],
						color: colors[1]
					}
				} ,{
					y: 28.7,
					color: colors[2],
					drilldown: {
						name: 'SkyTeam (25218)',
						categories: ['Air France','Delta','Others'],
						data: [14.2,13.7,0.8],
						color: colors[2]
					}
				} ,{
					y: 25.6,
					color: colors[3],
					drilldown: {
						name: 'No Alliance (22468)',
						categories: ['Thai Air Asia','Tiger Airways','Tuifly','Emirates','Air Asia','Thai Lion Air'],
						data: [1.4,3,4.6,13.8,1.7,1],
						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 "";
	}
}