private async Task DeleteMessages(string channelId, List <Message> messageHistories)
{
if (messageHistories == null)
{
return;
}
int deleteInterval = 300;
foreach (Message item in messageHistories)
{
if (string.IsNullOrEmpty(item.user) || item.user.Equals(UserIdOfToken))
{
DeletedResponse response;
do
{
try
{
response = await SlackClient.DeleteMessageAsync(channelId, item.ts);
}
catch (NullReferenceException)
{
response = new DeletedResponse()
{
ok = true
};
}
Thread.Sleep(deleteInterval);
} while ((response != null && !response.ok) && response.error.Equals(Config.SlackRateLimitError));
MessageDeleted?.Invoke();
}
}
}