/// <summary>
/// 获取用户在线状态
/// </summary>
/// <param name="userId"></param>
/// <returns></returns>
public UserPresenceStatus GetPresenceStatus(string userId)
{
var key = $"{PresenceStatusKey}{userId}";
if (!RedisHelper.Database.KeyExists(key))
{
return(new UserPresenceStatus());
}
var value = RedisHelper.Get <string>(key);
var presenceObject = new UserPresenceObject();
try
{
presenceObject = string.IsNullOrWhiteSpace(value) ? new UserPresenceObject() : JsonConvert.DeserializeObject <UserPresenceObject>(value);
}
catch (Exception)
{
var theBool = bool.TryParse(value, out bool resultBool);
var theInt = int.TryParse(value, out int resultInt);
if (theBool || theInt)
{
presenceObject = new UserPresenceObject();
}
}
return(new UserPresenceStatus
{
IsOnline = presenceObject.OnlineTimes > 0,
LatestOnlineTime = presenceObject.LatestOnlineTime
});
}
/// <summary>
/// 设置用户在线状态
/// </summary>
/// <param name="userId"></param>
/// <param name="isOnline"></param>
public void SetPresenceStatus(string userId, bool isOnline)
{
var key = $"{PresenceStatusKey}{userId}";
var value = RedisHelper.Get <string>($"{PresenceStatusKey}{userId}");
var redisPresenceObject = new UserPresenceObject();
try
{
redisPresenceObject = string.IsNullOrWhiteSpace(value) ? new UserPresenceObject() : JsonConvert.DeserializeObject <UserPresenceObject>(value);
}
catch (Exception)
{
var theBool = bool.TryParse(value, out bool resultBool);
var theInt = int.TryParse(value, out int resultInt);
if (theBool || theInt)
{
redisPresenceObject = new UserPresenceObject();
}
}
var onlineNum = redisPresenceObject.OnlineTimes;
if (isOnline)
{
onlineNum++;
}
else
{
onlineNum--;
}
onlineNum = onlineNum < 0 ? 0 : onlineNum;
if (redisPresenceObject.OnlineTimes == 0 && onlineNum > 0)
{
redisPresenceObject.LatestOnlineTime = DateTime.Now;
}
redisPresenceObject.OnlineTimes = onlineNum;
RedisHelper.Set($"{PresenceStatusKey}{userId}", JsonConvert.SerializeObject(redisPresenceObject));
}