import echarts from '../../echarts';
import List from '../../data/List';
import {util as zrUtil} from 'zrender';
import modelUtil from '../../util/model';
import numberUtil from '../../util/number';
import completeDimensions from '../../data/helper/completeDimensions';
import dataSelectableMixin from '../../component/helper/selectableMixin';

var PieSeries = echarts.extendSeriesModel({

    type: 'series.pie',

    // Overwrite
    init: function (option) {
        PieSeries.superApply(this, 'init', arguments);

        // Enable legend selection for each data item
        // Use a function instead of direct access because data reference may changed
        this.legendDataProvider = function () {
            return this.getRawData();
        };

        this.updateSelectedMap(option.data);

        this._defaultLabelLine(option);
    },

    // Overwrite
    mergeOption: function (newOption) {
        PieSeries.superCall(this, 'mergeOption', newOption);
        this.updateSelectedMap(this.option.data);
    },

    getInitialData: function (option, ecModel) {
        var dimensions = completeDimensions(['value'], option.data);
        var list = new List(dimensions, this);
        list.initData(option.data);
        return list;
    },

    // Overwrite
    getDataParams: function (dataIndex) {
        var data = this.getData();
        var params = PieSeries.superCall(this, 'getDataParams', dataIndex);
        // FIXME toFixed?

        var valueList = [];
        data.each('value', function (value) {
            valueList.push(value);
        });

        params.percent = numberUtil.getPercentWithPrecision(
            valueList,
            dataIndex,
            data.hostModel.get('percentPrecision')
        );

        params.$vars.push('percent');
        return params;
    },

    _defaultLabelLine: function (option) {
        // Extend labelLine emphasis
        modelUtil.defaultEmphasis(option.labelLine, ['show']);

        var labelLineNormalOpt = option.labelLine.normal;
        var labelLineEmphasisOpt = option.labelLine.emphasis;
        // Not show label line if `label.normal.show = false`
        labelLineNormalOpt.show = labelLineNormalOpt.show
            && option.label.normal.show;
        labelLineEmphasisOpt.show = labelLineEmphasisOpt.show
            && option.label.emphasis.show;
    },

    defaultOption: {
        zlevel: 0,
        z: 2,
        legendHoverLink: true,

        hoverAnimation: true,
        // 默认全局居中
        center: ['50%', '50%'],
        radius: [0, '75%'],
        // 默认顺时针
        clockwise: true,
        startAngle: 90,
        // 最小角度改为0
        minAngle: 0,
        // 选中时扇区偏移量
        selectedOffset: 10,
        // 高亮扇区偏移量
        hoverOffset: 10,

        // If use strategy to avoid label overlapping
        avoidLabelOverlap: true,
        // 选择模式，默认关闭，可选single，multiple
        // selectedMode: false,
        // 南丁格尔玫瑰图模式，'radius'（半径） | 'area'（面积）
        // roseType: null,

        percentPrecision: 2,

        // If still show when all data zero.
        stillShowZeroSum: true,

        // cursor: null,

        label: {
            normal: {
                // If rotate around circle
                rotate: false,
                show: true,
                // 'outer', 'inside', 'center'
                position: 'outer'
                // formatter: 标签文本格式器，同Tooltip.formatter，不支持异步回调
                // 默认使用全局文本样式，详见TEXTSTYLE
                // distance: 当position为inner时有效，为label位置到圆心的距离与圆半径(环状图为内外半径和)的比例系数
            },
            emphasis: {}
        },
        // Enabled when label.normal.position is 'outer'
        labelLine: {
            normal: {
                show: true,
                // 引导线两段中的第一段长度
                length: 15,
                // 引导线两段中的第二段长度
                length2: 15,
                smooth: false,
                lineStyle: {
                    // color: 各异,
                    width: 1,
                    type: 'solid'
                }
            }
        },
        itemStyle: {
            normal: {
                borderWidth: 1
            },
            emphasis: {}
        },

        // Animation type canbe expansion, scale
        animationType: 'expansion',

        animationEasing: 'cubicOut',

        data: []
    }
});

zrUtil.mixin(PieSeries, dataSelectableMixin);

export default PieSeries;