/// <summary>
/// 添加购物车商品到当前会话
/// 如果商品已在购物车则增加里面的数量
/// </summary>
/// <param name="productId">商品Id</param>
/// <param name="type">购物车商品类型</param>
/// <param name="parameters">匹配参数</param>
public virtual void AddCartProduct(
Guid productId, CartProductType type, ProductMatchParameters parameters)
{
// 检查是否允许非会员下单
var configManager = Application.Ioc.Resolve <GenericConfigManager>();
var settings = configManager.GetData <OrderSettings>();
var sessionManager = Application.Ioc.Resolve <SessionManager>();
var session = sessionManager.GetSession();
var user = session.GetUser();
if (user == null && !settings.AllowAnonymousVisitorCreateOrder)
{
throw new ForbiddenException(new T("Create order require user logged in"));
}
// 调用仓储添加购物车商品
using (UnitOfWork.Scope()) {
var repository = Application.Ioc.Resolve <CartProductRepository>();
repository.AddOrIncrease(session, productId, type, parameters);
}
// 非会员登录时，在购物车商品添加成功后需要延长会话时间
if (user == null)
{
session.SetExpiresAtLeast(SessionExpireDaysForNonUserPurcharse);
sessionManager.SaveSession();
}
// 删除相关的缓存
CartProductTotalCountCache.Remove(type);
}
/// <summary>
/// 获取购物车商品的总数量(商品 * 订购数量)
/// 结果会按当前用户Id和购物车商品类型缓存一定时间
/// </summary>
/// <param name="type">购物车商品类型</param>
/// <returns></returns>
public virtual long GetCartProductTotalCount(CartProductType type)
{
return(CartProductTotalCountCache.GetOrCreate(type, () => {
var sessionManager = Application.Ioc.Resolve <SessionManager>();
var session = sessionManager.GetSession();
var repository = Application.Ioc.Resolve <CartProductRepository>();
using (UnitOfWork.Scope()) {
return repository
.GetManyBySession(sessionManager.GetSession(), type)
.Sum(p => (long?)p.Count);
}
}, CartProductTotalCountCacheTime) ?? 0);
}
/// <summary>
/// 获取购物车商品的总数量(商品 * 订购数量)
/// 结果会按当前用户Id和购物车商品类型缓存一定时间
/// </summary>
/// <param name="type">购物车商品类型</param>
/// <returns></returns>
public virtual long GetCartProductTotalCount(CartProductType type)
{
// 从缓存获取
var count = CartProductTotalCountCache.GetOrDefault(type);
if (count != null)
{
return(count.Value);
}
// 从数据库获取
var sessionManager = Application.Ioc.Resolve <SessionManager>();
count = UnitOfWork.ReadRepository <CartProductRepository, long>(r =>
r.GetManyBySession(sessionManager.GetSession(), type).Sum(p => (long?)p.Count) ?? 0);
// 保存到缓存并返回
CartProductTotalCountCache.Put(type, count, CartProductTotalCountCacheTime);
return(count.Value);
}
/// <summary>
/// 删除当前会话下的购物车商品
/// </summary>
/// <param name="cartProductId">购物车商品Id</param>
/// <returns></returns>
public virtual bool DeleteCartProduct(long cartProductId)
{
// 从数据库删除，只删除当前会话下的购物车商品
var sessionManager = Application.Ioc.Resolve <SessionManager>();
bool result = UnitOfWork.WriteRepository <CartProductRepository, bool>(r => {
var cartProduct = r.GetManyBySession(sessionManager.GetSession(), null)
.FirstOrDefault(c => c.Id == cartProductId);
if (cartProduct != null)
{
r.Delete(cartProduct);
return(true);
}
return(false);
});
// 删除相关的缓存
CartProductTotalCountCache.Clear();
return(result);
}
/// <summary>
/// 删除当前会话下的购物车商品
/// </summary>
/// <param name="cartProductId">购物车商品Id</param>
/// <returns></returns>
public virtual bool DeleteCartProduct(Guid cartProductId)
{
// 从数据库删除，只删除当前会话下的购物车商品
var sessionManager = Application.Ioc.Resolve <SessionManager>();
var repository = Application.Ioc.Resolve <CartProductRepository>();
bool result;
using (UnitOfWork.Scope()) {
var cartProduct = repository.GetManyBySession(sessionManager.GetSession(), null)
.FirstOrDefault(c => c.Id == cartProductId);
if (cartProduct != null)
{
repository.Delete(cartProduct);
result = true;
}
result = false;
}
// 删除相关的缓存
CartProductTotalCountCache.Remove(CartProductType.Default);
CartProductTotalCountCache.Remove(CartProductType.Buynow);
return(result);
}
/// <summary>
/// 清理缓存
/// </summary>
public void ClearCache()
{
CartProductTotalCountCache.Clear();
}
