function _createSuper(Derived) { return function () { var Super = _getPrototypeOf(Derived), result; if (_isNativeReflectConstruct()) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }

function _possibleConstructorReturn(self, call) { if (call && (typeof call === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; subClass.__proto__ = superClass; }

var Util = require('../util');

var Guide = require('./base');

var vec2 = Util.MatrixUtil.vec2;

var _require = require('../const'),
    FONT_FAMILY = _require.FONT_FAMILY;

var Line = /*#__PURE__*/function (_Guide) {
  _inheritsLoose(Line, _Guide);

  var _super = _createSuper(Line);

  function Line() {
    return _Guide.apply(this, arguments) || this;
  }

  var _proto = Line.prototype;

  _proto.getDefaultCfg = function getDefaultCfg() {
    var cfg = _Guide.prototype.getDefaultCfg.call(this);

    return Util.mix({}, cfg, {
      /**
       * 辅助元素类型
       * @type {String}
       */
      name: 'line',

      /**
       * 辅助线的起点位置
       * @type {Object | Function | Array}
       */
      start: null,

      /**
       * 辅助线的终点位置
       * @type {Object | Function | Array}
       */
      end: null,

      /**
       * 辅助线的图形样式
       * @type {Object}
       */
      lineStyle: {
        stroke: '#000',
        lineWidth: 1
      },

      /**
       * 辅助文本配置
       * @type {Object}
       */
      text: {
        position: 'end',
        // 文本的显示位置： start / center / end / 百分比
        autoRotate: true,
        // 文本是否沿着辅助线的方向自动旋转
        style: {
          fill: '#999',
          fontSize: 12,
          fontWeight: 500,
          fontFamily: FONT_FAMILY
        },
        // 辅助文本的样式
        content: null // 辅助文本的文字

      }
    });
  };

  _proto.render = function render(coord, group) {
    var self = this;
    var start = self.parsePoint(coord, self.get('start'));
    var end = self.parsePoint(coord, self.get('end'));

    if (!start || !end) {
      return;
    }

    var guideLineGroup = group.addGroup({
      viewId: group.get('viewId')
    });

    self._drawLines(start, end, guideLineGroup);

    var text = self.get('text');

    if (text && text.content) {
      self._drawText(start, end, guideLineGroup);
    }

    self.set('el', guideLineGroup);
  };

  _proto._drawLines = function _drawLines(start, end, group) {
    var path = [['M', start.x, start.y], ['L', end.x, end.y]];
    var guideLine = group.addShape('Path', {
      attrs: Util.mix({
        path: path
      }, this.get('lineStyle'))
    });
    guideLine.name = 'guide-line';
    this.get('appendInfo') && guideLine.setSilent('appendInfo', this.get('appendInfo'));
  };

  _proto._drawText = function _drawText(start, end, group) {
    var textCfg = this.get('text');
    var position = textCfg.position;
    var textStyle = textCfg.style || {};
    var percent;

    if (position === 'start') {
      percent = 0;
    } else if (position === 'center') {
      percent = 0.5;
    } else if (Util.isString(position) && position.indexOf('%') !== -1) {
      percent = parseInt(position, 10) / 100;
    } else if (Util.isNumber(position)) {
      percent = position;
    } else {
      percent = 1;
    }

    if (percent > 1 || percent < 0) {
      percent = 1;
    }

    var cfg = {
      x: start.x + (end.x - start.x) * percent,
      y: start.y + (end.y - start.y) * percent
    };

    if (textCfg.offsetX) {
      // 设置了偏移量
      cfg.x += textCfg.offsetX;
    }

    if (textCfg.offsetY) {
      // 设置了偏移量
      cfg.y += textCfg.offsetY;
    }

    cfg.text = textCfg.content;
    cfg = Util.mix({}, cfg, textStyle);

    if (textCfg.autoRotate && Util.isNil(textStyle.rotate)) {
      // 自动旋转且用户没有设置旋转角度
      var angle = vec2.angleTo([end.x - start.x, end.y - start.y], [1, 0], 1);
      cfg.rotate = angle;
    } else if (!Util.isNil(textStyle.rotate)) {
      // 用户设置了旋转角度
      cfg.rotate = textStyle.rotate * Math.PI / 180;
    }

    var shape = group.addShape('Text', {
      attrs: cfg
    });
    shape.name = 'guide-line-text';
    this.get('appendInfo') && shape.setSilent('appendInfo', this.get('appendInfo'));
  };

  return Line;
}(Guide);

module.exports = Line;