视频直播优惠卷

// 发放优惠券
function distributeCoupon(userId, couponCode, discountAmount) {
    // 将优惠券信息存储到数据库
    const coupon = {
        userId: userId,
        couponCode: couponCode,
        discountAmount: discountAmount,
        expiryDate: new Date(new Date().getTime() + 7 * 24 * 60 * 60 * 1000) // 有效期7天
    };
    saveCouponToDatabase(coupon);
}

// 使用优惠券
function useCoupon(userId, couponCode, orderAmount) {
    const coupon = getCouponFromDatabase(userId, couponCode);
    if (coupon && new Date() < new Date(coupon.expiryDate)) {
        if (orderAmount >= coupon.discountAmount) {
            const finalAmount = orderAmount - coupon.discountAmount;
            applyDiscountToOrder(userId, finalAmount);
            markCouponAsUsed(couponCode);
            return true;
        }
    }
    return false;
}

// 示例调用
distributeCoupon('user123', 'SAVE10', 10);
useCoupon('user123', 'SAVE10', 50);