//判断商品是否可以下单
export function isCanBuy(goods,isStock) {
    return goods.isGrounding && goods.isPauseSale == 0 && (isStock?goods.stockNumber > 0:true) ;
}


// 一个数组是否包含另外一个数组全部元素
function arrayContainsAll(arr1, arr2) {
  for (let i = 0; i < arr2.length; i++) {
    if (!arr1.includes(arr2[i])) {
      return false;
    }
  }
  return true;
}

//n项 n-1项组合，生成全部结果
function generateCombinations(arr, k) {
  let result = [];

  function helper(index, current) {
    if (current.length === k) {
      result.push(current.slice()); // 使用slice()来避免直接修改原始数组
    } else {
      for (let i = index; i < arr.length; i++) {
        current.push(arr[i]); // 将当前元素添加到组合中
        helper(i + 1, current); // 递归调用，索引增加以避免重复选择相同的元素
        current.pop(); // 回溯，移除当前元素以便尝试其他组合
      }
    }
  }

  helper(0, []); // 从索引0开始，初始空数组作为起点
  return result;
}

function returnReverseVal(val, isReturnString = true) {
  const isBol = typeof val === "boolean";
  const isString = typeof val === "string";
  let reverseNewval = "";
  if (isBol) {
    reverseNewval = !val;
  }
  if (isString) {
    reverseNewval = val === "true" ? "false" : "true";
  }
  return reverseNewval;
}

export default{
	isCanBuy,arrayContainsAll,generateCombinations,returnReverseVal
}