private async Task <(long UserMessageCount, long AllMessageCount, List <Message> messages)> GetMessages(string channelId, Models.ChannelType channelType, DateTime messagesOlderThan)
{
long allMessageCount = 0;
long userMessageCount = 0;
bool isMoreMessages = true;
List <Message> messages = new List <Message>();
while (isMoreMessages)
{
MessageHistory slackMessages = null;
switch (channelType)
{
case Models.ChannelType.Public:
slackMessages = await SlackClient.GetConversationsHistoryAsync(new Channel()
{
id = channelId
}, messagesOlderThan, new DateTime(2000, 01, 01), 1000);
break;
case Models.ChannelType.Private:
slackMessages = await SlackClient.GetConversationsHistoryAsync(new Channel()
{
id = channelId
}, messagesOlderThan, new DateTime(2000, 01, 01), 1000);
break;
case Models.ChannelType.DirectMessage:
slackMessages = await SlackClient.GetConversationsHistoryAsync(new Channel()
{
id = channelId
}, messagesOlderThan, new DateTime(2000, 01, 01), 1000);
break;
}
if (slackMessages?.messages != null)
{
allMessageCount += slackMessages.messages.Count(x => string.IsNullOrEmpty(x.subtype) || !x.subtype.Equals(Config.SlackGroupJoinMessageType));
userMessageCount += slackMessages.messages
.Count(x =>
(string.IsNullOrEmpty(UserIdOfToken) || string.IsNullOrEmpty(x.user) || x.user.Equals(UserIdOfToken)) &&
(string.IsNullOrEmpty(x.subtype) || !x.subtype.Equals(Config.SlackGroupJoinMessageType))
);
messages.AddRange(slackMessages.messages);
}
if (slackMessages?.messages?.Count() >= 1000)
{
messagesOlderThan = slackMessages.messages.Min(x => x.ts);
}
else
{
isMoreMessages = false;
}
}
return(userMessageCount, allMessageCount, messages);
}