public MattermostMessage CloneMessage(MattermostMessage inMsg)
{
var outMsg = new MattermostMessage
{
Text = "",
Channel = inMsg.Channel,
Username = inMsg.Username,
IconUrl = inMsg.IconUrl
};
return(outMsg);
}
/// <summary>
/// Post Message to Mattermost server. Messages will be automatically split if total text length > 4000
/// </summary>
/// <param name="api"></param>
/// <param name="inMessage">The messsage you wish to send</param>
/// <returns></returns>
public async Task PostAsync(IApi api, MattermostMessage inMessage)
{
try
{
var outMessages = new List <MattermostMessage>();
var msgCount = 0;
var lines = new string[] { };
if (inMessage.Text != null)
{
lines = inMessage.Text.Split(new[] { "\r\n", "\r", "\n" }, StringSplitOptions.None);
}
//start with one cloned inMessage in the list
outMessages.Add(CloneMessage(inMessage));
//add text from original. If we go over 3800, we'll split it to a new inMessage.
foreach (var line in lines)
{
if (line.Length + outMessages[msgCount].Text.Length > 3800)
{
msgCount += 1;
outMessages.Add(CloneMessage(inMessage));
}
outMessages[msgCount].Text += $"{line}\r\n";
}
//Length of text on the last (or first if only one) inMessage.
var lenMessageText = outMessages[msgCount].Text.Length;
//does our original have attachments?
if (inMessage.Attachments?.Any() ?? false)
{
outMessages[msgCount].Attachments = new List <MattermostAttachment>();
//loop through them in a similar fashion to the inMessage text above.
foreach (var att in inMessage.Attachments)
{
//add this attachment to the outgoing message
outMessages[msgCount].Attachments.Add(CloneAttachment(att));
//get a count of attachments on this message, and subtract one so we know the index of the current new attachment
var attIndex = outMessages[msgCount].Attachments.Count - 1;
//Get the text lines
if (!String.IsNullOrEmpty(att.Text))
{
lines = att.Text.Split(new[] { "\r\n", "\r", "\n" }, StringSplitOptions.None);
}
foreach (var line in lines)
{
//Get the total length of all attachments on the current outgoing message
var lenAllAttsText = outMessages[msgCount].Attachments.Sum(a => a.Text.Length);
if (lenMessageText + lenAllAttsText + line.Length > 3800)
{
msgCount += 1;
attIndex = 0;
outMessages.Add(CloneMessage(inMessage));
outMessages[msgCount].Attachments = new List <MattermostAttachment> {
CloneAttachment(att)
};
}
outMessages[msgCount].Attachments[attIndex].Text += $"{line}\r\n";
}
}
}
if (outMessages.Count > 1)
{
var num = 1;
foreach (var msg in outMessages)
{
msg.Text = $"`({num}/{msgCount + 1}): ` " + msg.Text;
num++;
}
}
foreach (var msg in outMessages)
{
var request = new Request(_webhookUrl.ToString(), "", HttpMethod.Post);
request.AddJsonBody(msg);
request.AddHeader("Host", _webhookUrl.Host);
await api.Request(request);
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
throw;
}
}
