public async Task <ChatLog> GetChatLogAsync(AuthToken token, Guild guild, Channel channel,
DateTimeOffset?after = null, DateTimeOffset?before = null, IProgress <double> progress = null)
{
// Get messages
IReadOnlyList <Message> messages = await GetChannelMessagesAsync(token, channel.Id, after, before, progress);
// Get mentionables
Mentionables mentionables = await GetMentionablesAsync(token, guild.Id, messages);
return(new ChatLog(guild, channel, after, before, messages, mentionables));
}
public async Task GetAndExportChannelMessagesAsync(AuthToken token, Guild guild, Channel channel,
CsvChatLogRenderer renderer, DateTimeOffset?after = null, DateTimeOffset?before = null,
IProgress <double> progress = null)
{
Message firstMsg = null, currentLastMsg = null;
Mentionables mentionables = null;
// Get the last message
JToken response = await GetApiResponseAsync(token, "channels", $"{channel.Id}/messages",
"limit=1", $"before={before?.ToSnowflake()}");
Message lastMessage = response.Select(ParseMessage).FirstOrDefault();
// If the last message doesn't exist or it's outside of range - return
if (lastMessage == null || lastMessage.Timestamp < after)
{
progress?.Report(1);
return;
}
// Get other messages
string offsetId = after?.ToSnowflake() ?? "0";
while (true)
{
// Get message batch
response = await GetApiResponseAsync(token, "channels", $"{channel.Id}/messages",
"limit=1000", $"after={offsetId}");
// Parse
Message[] messages = response
.Select(ParseMessage)
.Reverse() // reverse because messages appear newest first
.ToArray();
// Break if there are no messages (can happen if messages are deleted during execution)
if (!messages.Any())
{
break;
}
// Trim messages to range (until last message)
Message[] messagesInRange = messages
.TakeWhile(m => m.Id != lastMessage.Id && m.Timestamp < lastMessage.Timestamp)
.ToArray();
mentionables = await GetMentionablesAsync(token, guild.Id, messagesInRange);
await renderer.RenderAsync(new ChatLog(guild, channel, after, before, messagesInRange, mentionables));
// Break if messages were trimmed (which means the last message was encountered)
if (messagesInRange.Length != messages.Length)
{
break;
}
if (firstMsg == null)
{
firstMsg = messagesInRange.First();
}
currentLastMsg = messagesInRange.Last();
// Report progress (based on the time range of parsed messages compared to total)
progress?.Report((currentLastMsg.Timestamp - firstMsg.Timestamp).TotalSeconds /
(lastMessage.Timestamp - firstMsg.Timestamp).TotalSeconds);
// Move offset
offsetId = currentLastMsg.Id;
}
var lastMessageList = new Message[] { lastMessage };
mentionables = await GetMentionablesAsync(token, guild.Id, lastMessageList);
await renderer.RenderAsync(new ChatLog(guild, channel, after, before, lastMessageList, mentionables));
// Report progress
progress?.Report(1);
}
