/// <summary>
/// 检查用户在登陆表中的情况，返回bool和返回信息。
/// </summary>
/// <param name="user"></param>
/// <param name="message"></param>
/// <returns></returns>
public static bool CheckStatus(UserInfo user, out string message)
{
//用户不存在
if (user == null)
{
message = Conf.MessageInfo.USER_NOT_EXIST;
return(false);
}
IEnumerable <UserPersistence> set = list.Where(i => i.Uid == user.ID);
//未登陆
if (set == null || !set.Any())
{
message = Conf.MessageInfo.USER_NOT_LOGEDIN;
return(false);
}
UserPersistence u = set.First();
//登陆超时
//if (u.LoginTime.AddMinutes(Conf.Config.LOGIN_EFFECTIVE_MINUTE) < DateTime.Now)
//{
// message = Conf.MessageInfo.LOGIN_TIMEOUT;
// return false;
//}
//已登陆，更新登陆状态。
UserPersistence newStatus = new UserPersistence
{
Uid = u.Uid,
LoginTime = DateTime.Now
};
list.Remove(u);
list.Add(newStatus);
message = Conf.MessageInfo.LOGIN_OK;
return(true);
}
public static bool remove(int uid)
{
try
{
UserPersistence current = list.Find(u => u.Uid == uid);
if (current != null)
{
list.Remove(current);
}
return(true);
}
catch (Exception e)
{
return(false);
}
}
public static bool Add(UserInfo user)
{
IEnumerable <UserPersistence> set = from up in list where up.Uid == user.ID select up;
//登陆状态不存在(直接添加状态)
if (!set.Any())
{
UserPersistence newUser = new UserPersistence
{
Uid = user.ID,
LoginTime = DateTime.Now
};
list.Add(newUser);
return(true);
}
//登陆状态存在(Update一下登陆时间)
else
{
UserPersistence current = list.Find(u => u.Uid == user.ID);
current.LoginTime = DateTime.Now;
return(true);
}
}