import { each, isArray, isString } from '@antv/util';

const regexTags = /[MLHVQTCSAZ]([^MLHVQTCSAZ]*)/gi;
const regexDot = /[^\s,]+/gi;

export function parseRadius(radius) {
  let r1 = 0;
  let r2 = 0;
  let r3 = 0;
  let r4 = 0;
  if (isArray(radius)) {
    if (radius.length === 1) {
      r1 = r2 = r3 = r4 = radius[0];
    } else if (radius.length === 2) {
      r1 = r3 = radius[0];
      r2 = r4 = radius[1];
    } else if (radius.length === 3) {
      r1 = radius[0];
      r2 = r4 = radius[1];
      r3 = radius[2];
    } else {
      r1 = radius[0];
      r2 = radius[1];
      r3 = radius[2];
      r4 = radius[3];
    }
  } else {
    r1 = r2 = r3 = r4 = radius;
  }
  return {
    r1,
    r2,
    r3,
    r4,
  };
}

export function parsePath(path) {
  path = path || [];
  if (isArray(path)) {
    return path;
  }

  if (isString(path)) {
    path = path.match(regexTags);
    each(path, (item, index) => {
      item = item.match(regexDot);
      if (item[0].length > 1) {
        const tag = item[0].charAt(0);
        item.splice(1, 0, item[0].substr(1));
        item[0] = tag;
      }
      each(item, (sub, i) => {
        if (!isNaN(sub)) {
          item[i] = +sub;
        }
      });
      path[index] = item;
    });
    return path;
  }
}