var legendsectorAirline = {};
var legendsectorAlliance = {};

legendsectorAlliance['OneWorld'] = 90;
legendsectorAlliance['Star Alliance'] = 0;
legendsectorAlliance['SkyTeam'] = 1;
legendsectorAlliance['No Alliance'] = 18;
legendsectorAirline['British Airways'] = 78;
legendsectorAirline['Air Malta'] = 2;
legendsectorAirline['EasyJet'] = 2;
legendsectorAirline['Dan Air'] = 2;
legendsectorAirline['Ryanair'] = 2;
legendsectorAirline['Virgin Atlantic'] = 1;
legendsectorAirline['Finnair'] = 2;
legendsectorAirline['Aer Lingus'] = 2;
legendsectorAirline['Easyjet'] = 4;
legendsectorAirline['Norwegian Air International'] = 2;
legendsectorAirline['Qatar Airways'] = 6;
legendsectorAirline['Sri Lankan Airlines'] = 4;
legendsectorAirline['EasyJet'] = 2;
legendsectorAirline['OneWorld'] = 90;
legendsectorAirline['Star Alliance'] = 0;
legendsectorAirline['SkyTeam'] = 1;
legendsectorAirline['No Alliance'] = 18;


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

        var colors = Highcharts.getOptions().colors,


            categories = ['OneWorld','SkyTeam','No Alliance'],
            name = 'Carriers',
            data = [{
					y: 82.6,
					color: colors[0],
					drilldown: {
						name: 'OneWorld (90)',
						categories: ['British Airways','Finnair','Qatar Airways','Sri Lankan Airlines'],
						data: [71.6,1.8,5.5,3.7],
						color: colors[0]
					}
				} ,{
					y: 0.9,
					color: colors[2],
					drilldown: {
						name: 'SkyTeam (1)',
						categories: ['Others'],
						data: [0.9],
						color: colors[2]
					}
				} ,{
					y: 16.5,
					color: colors[3],
					drilldown: {
						name: 'No Alliance (18)',
						categories: ['Air Malta','EasyJet','Dan Air','Ryanair','Aer Lingus','Easyjet','Norwegian Air International','EasyJet'],
						data: [1.8,1.8,1.8,1.8,1.8,3.7,1.8,1.8],
						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_sector',
                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 +
                        	'%' + getCountsector(this.point.name) : null;
                    }
                }
            }]
        });
    });

});

function getCountsector(airline)
{
	if(legendsectorAirline[airline])
	{
		return " (" + parseInt(legendsectorAirline[airline]).toLocaleString() + ")";
	}
	else
	{
		return "";
	}
}