import { asc, quantile } from '../../util/number.mjs';
import { isFunction, isString } from '../../../../../../zrender@6.0.0/node_modules/zrender/lib/core/util.mjs';

/**
 * See:
 *  <https://en.wikipedia.org/wiki/Box_plot#cite_note-frigge_hoaglin_iglewicz-2>
 *  <http://stat.ethz.ch/R-manual/R-devel/library/grDevices/html/boxplot.stats.html>
 *
 * Helper method for preparing data.
 *
 * @param rawData like
 *        [
 *            [12,232,443], (raw data set for the first box)
 *            [3843,5545,1232], (raw data set for the second box)
 *            ...
 *        ]
 * @param opt.boundIQR=1.5 Data less than min bound is outlier.
 *      default 1.5, means Q1 - 1.5 * (Q3 - Q1).
 *      If 'none'/0 passed, min bound will not be used.
 */
function prepareBoxplotData(rawData, opt) {
  opt = opt || {};
  var boxData = [];
  var outliers = [];
  var boundIQR = opt.boundIQR;
  var useExtreme = boundIQR === 'none' || boundIQR === 0;
  for (var i = 0; i < rawData.length; i++) {
    var ascList = asc(rawData[i].slice());
    var Q1 = quantile(ascList, 0.25);
    var Q2 = quantile(ascList, 0.5);
    var Q3 = quantile(ascList, 0.75);
    var min = ascList[0];
    var max = ascList[ascList.length - 1];
    var bound = (boundIQR == null ? 1.5 : boundIQR) * (Q3 - Q1);
    var low = useExtreme ? min : Math.max(min, Q1 - bound);
    var high = useExtreme ? max : Math.min(max, Q3 + bound);
    var itemNameFormatter = opt.itemNameFormatter;
    var itemName = isFunction(itemNameFormatter) ? itemNameFormatter({
      value: i
    }) : isString(itemNameFormatter) ? itemNameFormatter.replace('{value}', i + '') : i + '';
    boxData.push([itemName, low, Q1, Q2, Q3, high]);
    for (var j = 0; j < ascList.length; j++) {
      var dataItem = ascList[j];
      if (dataItem < low || dataItem > high) {
        var outlier = [itemName, dataItem];
        outliers.push(outlier);
      }
    }
  }
  return {
    boxData: boxData,
    outliers: outliers
  };
}

export { prepareBoxplotData as default };
