/// <summary>
/// 移除好友
/// </summary>
/// <param name="userIdentifier">用户标识</param>
/// <param name="friend">好友缓存项</param>
public void RemoveFriend(UserIdentifier userIdentifier, FriendCacheItem friend)
{
var user = GetCacheItemOrNull(userIdentifier);
if (user == null)
{
return;
}
lock (_syncObj)
{
if (user.Friends.ContainsFriend(friend))
{
user.Friends.Remove(friend);
}
}
}
/// <summary>
/// 更新好友
/// </summary>
/// <param name="userIdentifier">用户标识</param>
/// <param name="friend">好友缓存项</param>
public void UpdateFriend(UserIdentifier userIdentifier, FriendCacheItem friend)
{
var user = GetCacheItemOrNull(userIdentifier);
if (user == null)
{
return;
}
lock (_syncObj)
{
var existingFriendIndex = user.Friends.FindIndex(
f => f.FriendUserId == friend.FriendUserId &&
f.FriendTenantId == friend.FriendTenantId
);
if (existingFriendIndex >= 0)
{
user.Friends[existingFriendIndex] = friend;
}
}
}
/// <summary>
/// 是否包含好友
/// </summary>
/// <param name="items">好友缓存项列表</param>
/// <param name="item">好友缓存项</param>
/// <returns></returns>
public static bool ContainsFriend(this List <FriendCacheItem> items, FriendCacheItem item)
{
return(items.Any(f => f.FriendTenantId == item.FriendTenantId && f.FriendUserId == item.FriendUserId));
}