//根据店铺信息返回是否是后付款
export function $trturnPayAfter(shop) {
	//before 先付  after 后付
	const payAfter = shop.registerType == "before" ? false : true;
	return payAfter
}
//根据店铺信息返回就餐类型
export function $returnUseType(shop, useType) {
	//是否是后付款
	const payAfter = $trturnPayAfter(shop)
	let result = "takeout";
	if (useType == "takeout") {
		result = 'takeout'
	} else {
		//堂食
		result = `dine-in-${payAfter ? "after" : "before"}`;
	}
	return result
}
//判断商品是否可以下单
export function isCanBuy(skuGoods,goods) {
    if(goods.type!='sku'){
        //单规格
        return goods.isSale&&goods.isSoldStock==0&&(goods.isStock?goods.stockNumber>0:true);
    }else{
        //多规格
        return  goods.isSale&&goods.isSoldStock==0&&skuGoods.isGrounding&&skuGoods.isPauseSale==0&&(goods.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 = [];
		console.log("current.length === k",arr)
	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
			}
			console.log(current)
		}
	}

	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,$returnUseType
}