function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : String(i); }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
import Decimal from 'decimal.js';
export function distributeDiscountOrIncrease(products,
// 商品列表
totalAdjustment,
// 总折扣或加价金额，可能为负数（折扣）或正数（加价）
totalPrice) {
  // 总折扣
  var totalAdjustmentDecimal = new Decimal(totalAdjustment);
  var totalAdjustmentApplied = new Decimal(0);

  // 存储调整后的商品
  var adjustedProducts = [];

  // 按比例分摊折扣/加价金额
  products.forEach(function (product) {
    // 原始价格
    var productPrice = new Decimal(product._extend.origin_total);
    // 按比例计算调整金额
    var adjustmentAmount = productPrice.div(totalPrice).times(totalAdjustmentDecimal).toFixed(2, Decimal.ROUND_HALF_UP);

    // 防止价格变负，调整均摊金额
    var newPrice = productPrice.plus(adjustmentAmount).toFixed(2, Decimal.ROUND_HALF_UP);
    var adjustedPrice = new Decimal(newPrice).lessThan(0) ? '0.00' : newPrice;
    adjustedProducts.push(_objectSpread(_objectSpread({}, product), {}, {
      _extend: _objectSpread(_objectSpread({}, product._extend), {}, {
        total: parseFloat(adjustedPrice)
      })
    }));
    totalAdjustmentApplied = totalAdjustmentApplied.plus(new Decimal(adjustmentAmount));
  });
  // 计算调整后的总金额
  var finalTotalPrice = adjustedProducts.reduce(function (sum, product) {
    return sum.plus(new Decimal(product._extend.total));
  }, new Decimal(0));

  // 如果总价与目标差异不为零，则调整最后一个商品价格  150 - (-10 + 140 ) = 0
  var adjustmentDifference = new Decimal(totalPrice).minus(finalTotalPrice).plus(new Decimal(totalAdjustment));
  if (!adjustmentDifference.isZero()) {
    var lastProduct = adjustedProducts[adjustedProducts.length - 1];
    var lastPrice = new Decimal(lastProduct._extend.total).plus(adjustmentDifference).toFixed(2, Decimal.ROUND_HALF_UP);

    // 确保最后调整后的价格不为负数
    lastPrice = new Decimal(lastPrice).lessThan(0) ? '0.00' : lastPrice;
    lastProduct._extend.total = parseFloat(lastPrice);
  }

  // 将结果格式化为以 _id 为键的对象
  return adjustedProducts;
}