var _config = require("../../config");

var __DEV__ = _config.__DEV__;

var SeriesModel = require("../../model/Series");

var List = require("../../data/List");

var zrUtil = require("zrender/lib/core/util");

var _format = require("../../util/format");

var encodeHTML = _format.encodeHTML;

var CoordinateSystem = require("../../CoordinateSystem");

// Convert [ [{coord: []}, {coord: []}] ]
// to [ { coords: [[]] } ]
function preprocessOption(seriesOpt) {
  var data = seriesOpt.data;

  if (data && data[0] && data[0][0] && data[0][0].coord) {
    seriesOpt.data = zrUtil.map(data, function (itemOpt) {
      var coords = [itemOpt[0].coord, itemOpt[1].coord];
      var target = {
        coords: coords
      };

      if (itemOpt[0].name) {
        target.fromName = itemOpt[0].name;
      }

      if (itemOpt[1].name) {
        target.toName = itemOpt[1].name;
      }

      return zrUtil.mergeAll([target, itemOpt[0], itemOpt[1]]);
    });
  }
}

var LinesSeries = SeriesModel.extend({
  type: 'series.lines',
  dependencies: ['grid', 'polar'],
  visualColorAccessPath: 'lineStyle.normal.color',
  init: function (option) {
    // Not using preprocessor because mergeOption may not have series.type
    preprocessOption(option);
    LinesSeries.superApply(this, 'init', arguments);
  },
  mergeOption: function (option) {
    preprocessOption(option);
    LinesSeries.superApply(this, 'mergeOption', arguments);
  },
  getInitialData: function (option, ecModel) {
    var lineData = new List(['value'], this);
    lineData.hasItemOption = false;
    lineData.initData(option.data, [], function (dataItem, dimName, dataIndex, dimIndex) {
      // dataItem is simply coords
      if (dataItem instanceof Array) {
        return NaN;
      } else {
        lineData.hasItemOption = true;
        var value = dataItem.value;

        if (value != null) {
          return value instanceof Array ? value[dimIndex] : value;
        }
      }
    });
    return lineData;
  },
  formatTooltip: function (dataIndex) {
    var data = this.getData();
    var itemModel = data.getItemModel(dataIndex);
    var name = itemModel.get('name');

    if (name) {
      return name;
    }

    var fromName = itemModel.get('fromName');
    var toName = itemModel.get('toName');
    var html = [];
    fromName != null && html.push(fromName);
    toName != null && html.push(toName);
    return encodeHTML(html.join(' > '));
  },
  defaultOption: {
    coordinateSystem: 'geo',
    zlevel: 0,
    z: 2,
    legendHoverLink: true,
    hoverAnimation: true,
    // Cartesian coordinate system
    xAxisIndex: 0,
    yAxisIndex: 0,
    symbol: ['none', 'none'],
    symbolSize: [10, 10],
    // Geo coordinate system
    geoIndex: 0,
    effect: {
      show: false,
      period: 4,
      // Animation delay. support callback
      // delay: 0,
      // If move with constant speed px/sec
      // period will be ignored if this property is > 0,
      constantSpeed: 0,
      symbol: 'circle',
      symbolSize: 3,
      loop: true,
      // Length of trail, 0 - 1
      trailLength: 0.2 // Same with lineStyle.normal.color
      // color

    },
    large: false,
    // Available when large is true
    largeThreshold: 2000,
    // If lines are polyline
    // polyline not support curveness, label, animation
    polyline: false,
    label: {
      normal: {
        show: false,
        position: 'end' // distance: 5,
        // formatter: 标签文本格式器，同Tooltip.formatter，不支持异步回调

      }
    },
    lineStyle: {
      normal: {
        opacity: 0.5
      }
    }
  }
});
var _default = LinesSeries;
module.exports = _default;