define([
'./abstract',
'jquery',
'underscore'
], function (Abstract, $, _) {
return Abstract.extend({

getChartConfig: function () {
return {
type: 'doughnut',
options: {
title: {
display: false
},
legend: {
display: false
},
responsive: true,
maintainAspectRatio: false
}
};
},

updateData: function () {
if (!this.chart) {
return;
}

var data = {
labels: this.getLabels(),
datasets: this.getDataSets()
};

if (this.chart.data !== data) {
this.chart.data = data;
this.chart.update(0, true);
}
},


getDataSets: function () {
var sets = [];

_.each(this.columns, function (column) {
if (column.isInternal) {
return;
}

var set = {
label: column.label,
stack: column.index,
backgroundColor: [],
borderColor: [],
borderWidth: 1,
data: [],
hidden: !column.isVisible
};

_.each(this.rows, function (row, i) {
var value = this.getCellValue(column, row);
set.data.push(value);
set.backgroundColor.push(this.getColor(i));
}, this);

sets.push(set);
}, this);

return sets;
},

getColor: function (idx) {
var colors = [
'#97CC64',
'#FF5A3E',
'#77B6E7',
'#FFD963',
'#A9B9B8',
'#DC9D6B',
'#8549ba',
'#00a950',
'#166a8f',
'#acc236',
'#537bc4',
'#f53794',
'#f67019',
'#4dc9f6'
];

while (idx >= colors.length && colors.length > 0) {
idx = idx - colors.length;
}

return colors[idx];
}
});
});